fc-selenite: src/nucleus/tcs.c annotate

annotate src/nucleus/tcs.c @ 158:8fe0cde2fd79

doc/Compiling: update for SE J100 target and fc-host-tools-r10

author	Mychaela Falconia <falcon@freecalypso.org>
date	Sun, 17 Mar 2019 07:20:28 +0000
parents	0f80e1e4dce4
children

rev	line source
7 0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	2 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	3 /* Copyright Mentor Graphics Corporation 2002 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	4 /* All Rights Reserved. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	5 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	8 /* SUBJECT TO LICENSE TERMS. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	9 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	10 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	11
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	12 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	13 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	14 /* FILE NAME VERSION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	15 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	16 /* tcs.c Nucleus PLUS 1.14 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	17 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	18 /* COMPONENT */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	19 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	20 /* TC - Thread Control */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	21 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	22 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	23 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	24 /* This file contains supplemental routines for the Thread Control */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	25 /* component. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	26 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	27 /* DATA STRUCTURES */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	28 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	29 /* None */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	30 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	31 /* FUNCTIONS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	32 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	33 /* TCS_Change_Priority Change task's priority */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	34 /* TCS_Change_Preemption Change task's preemption */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	35 /* TCS_Change_Time_Slice Change task's time-slice */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	36 /* TCS_Control_Signals Control signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	37 /* TCS_Receive_Signals Receive signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	38 /* TCS_Register_Signal_Handler Register signal handler */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	39 /* TCS_Send_Signals Send signals to a task */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	40 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	41 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	42 /* DEPENDENCIES */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	43 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	44 /* cs_extr.h Common Service functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	45 /* tc_extr.h Thread Control functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	46 /* in_extr.h Initialization/Interrupt */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	47 /* functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	48 /* tm_extr.h Timer Control function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	49 /* er_extr.h Error handling function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	50 /* hi_extr.h History functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	51 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	52 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	53 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	54 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	55 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	56 /* 03-01-1994 Created initial version 1.1 from */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	57 /* previous version of TCC.C */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	58 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	59 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	60 /* 04-04-1996 Modified TCS_Send_Signals, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	61 /* resulting in version 1.1+ */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	62 /* (spr 107) */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	63 /* 04-17-1996 updated to version 1.2 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	64 /* 03-24-1998 Released version 1.3. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	65 /* 03-26-1999 Released 1.11m (new release */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	66 /* numbering scheme) */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	67 /* 04-17-2002 Released version 1.13m */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	68 /* 11-07-2002 Released version 1.14 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	69 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	70 #define NU_SOURCE_FILE
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	71
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	72
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	73 #include "cs_extr.h" /* Common service functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	74 #include "tc_extr.h" /* Thread control functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	75 #include "in_extr.h" /* Initialization/Interrupt */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	76 /* functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	77 #include "tm_extr.h" /* Timer control functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	78 #include "er_extr.h" /* Error handling function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	79 #include "hi_extr.h" /* History functions */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	80 #include "profiler.h" /* ProView interface */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	81
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	82
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	83 /* Define external inner-component global data references. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	84
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	85 extern CS_NODE *TCD_Created_Tasks_List;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	86 extern TC_TCB *TCD_Priority_List[TC_PRIORITIES];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	87 extern UNSIGNED TCD_Priority_Groups;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	88 extern DATA_ELEMENT TCD_Sub_Priority_Groups[TC_MAX_GROUPS];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	89 extern UNSIGNED_CHAR TCD_Lowest_Set_Bit[];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	90 extern INT TCD_Highest_Priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	91 extern TC_TCB *TCD_Execute_Task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	92 extern VOID *TCD_Current_Thread;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	93 extern TC_PROTECT TCD_System_Protect;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	94 extern INT TMD_Time_Slice_State;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	95
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	96
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	97
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	98 /* Define external inner-component function calls that are not available to
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	99 other components. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	100
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	101 VOID TCT_Build_Signal_Frame(TC_TCB *task_ptr);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	102 VOID TCT_Protect_Switch(TC_TCB *task);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	103 VOID TCT_Signal_Exit(VOID);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	104
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	105
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	106 /* Define internal function calls. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	107
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	108 VOID TCC_Signal_Shell(VOID);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	109
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	110
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	111 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	112 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	113 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	114 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	115 /* TCS_Change_Priority */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	116 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	117 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	118 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	119 /* This function changes the priority of the specified task. The */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	120 /* priority of a suspended or a ready task can be changed. If the */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	121 /* new priority necessitates a context switch, control is */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	122 /* transferred back to the system. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	123 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	124 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	125 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	126 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	127 /* TCSE_Change_Priority Error checking shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	128 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	129 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	130 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	131 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	132 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	133 /* TCT_Control_To_System Transfer control to system */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	134 /* TCT_Protect Protect scheduling data */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	135 /* TCT_Set_Execute_Task Set TCD_Execute_Task pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	136 /* TCT_Unprotect Release protection of data */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	137 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	138 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	139 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	140 /* task_ptr Task control block pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	141 /* new_priority New priority for task */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	142 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	143 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	144 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	145 /* old_priority Original task priority */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	146 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	147 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	148 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	149 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	150 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	151 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	152 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	153 /* 03-01-1994 Modified function interface, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	154 /* added register optimizations, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	155 /* modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	156 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	157 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	158 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	159 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	160 /* 10-4-1999 Bug fixes - return if new */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	161 /* priority equals old priority */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	162 /* and don't move the head pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	163 /* unless the head node is changing */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	164 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	165 OPTION TCS_Change_Priority(NU_TASK *task_ptr, OPTION new_priority)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	166 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	167
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	168 R1 TC_TCB task; / Task control block ptr */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	169 R2 TC_TCB head; / Head list pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	170 R3 INT index; /* Working index variable */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	171 OPTION old_priority; /* Previous priority of task */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	172 DATA_ELEMENT temp; /* Temporary variable */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	173 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	174
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	175 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	176 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	177
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	178 /* Move task control block pointer into internal pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	179 task = (TC_TCB *) task_ptr;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	180
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	181
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	182 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	183
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	184 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	185 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	186
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	187 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	188
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	189 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	190
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	191 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	192 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	193 HIC_Make_History_Entry(NU_CHANGE_PRIORITY_ID, (UNSIGNED) task,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	194 (UNSIGNED) new_priority, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	195
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	196 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	197
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	198 /* Protect against multiple access to the scheduling list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	199 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	200
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	201 /* Save the old priority of the task. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	202 old_priority = task -> tc_priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	203
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	204
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	205 /* BUG FIX this should probably go into an error checking routine instead of here */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	206 if (!(task -> tc_priority == new_priority))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	207 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	208
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	209
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	210 /* Check to see if the task is currently ready. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	211 if (task -> tc_status == NU_READY)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	212 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	213
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	214 /* Remove the task from the ready list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	215
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	216 /* Determine if the task is the only one on the list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	217 if (task -> tc_ready_next == task)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	218 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	219
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	220 /* Only task on the list. Clear the task's pointers and
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	221 clear the entry in the priority table. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	222 task -> tc_ready_next = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	223 task -> tc_ready_previous = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	224 *(task -> tc_priority_head) = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	225
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	226 /* Clear the sub-priority group. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	227 *(task -> tc_sub_priority_ptr) =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	228 *(task -> tc_sub_priority_ptr) & ~(task -> tc_sub_priority);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	229
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	230 /* Determine if the main priority group needs to be cleared.
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	231 This is only true if there are no other bits set in this
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	232 sub-priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	233 if (*(task -> tc_sub_priority_ptr) == 0)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	234
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	235 /* Clear the main priority group bit. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	236 TCD_Priority_Groups =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	237 TCD_Priority_Groups & ~(task -> tc_priority_group);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	238 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	239 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	240 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	241
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	242 /* Not the only task ready at the same priority level. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	243
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	244 /* Remove from the linked-list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	245 (task -> tc_ready_previous) -> tc_ready_next =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	246 task -> tc_ready_next;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	247 (task -> tc_ready_next) -> tc_ready_previous =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	248 task -> tc_ready_previous;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	249
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	250
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	251
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	252 /* Update the head pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	253 /* BUG FIX - update head if head is changing priority - leave
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	254 it alone otherwise! */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	255 if(*(task -> tc_priority_head) == task )
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	256 *(task -> tc_priority_head) = task -> tc_ready_next;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	257
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	258 /* Clear the next and previous pointers. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	259 task -> tc_ready_next = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	260 task -> tc_ready_previous = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	261 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	262
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	263 /* Now add in the task at the new priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	264 task -> tc_priority = new_priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	265
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	266 /* Build the other priority information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	267 task -> tc_priority = new_priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	268 task -> tc_priority_head = &(TCD_Priority_List[new_priority]);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	269 task -> tc_sub_priority = (DATA_ELEMENT) (1 << (new_priority & 7));
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	270 task -> tc_priority_group = ((UNSIGNED) 1) << (new_priority >> 3);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	271 task -> tc_sub_priority_ptr =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	272 &(TCD_Sub_Priority_Groups[(new_priority >> 3)]);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	273
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	274 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	275 _RTProf_DumpTask(task,RT_PROF_CHANGE_PRIORITY);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	276 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	277 /* Link the task into the new priority list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	278 head = *(task -> tc_priority_head);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	279
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	280 /* Determine if the list is non-empty. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	281 if (head)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	282 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	283
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	284 /* Add the TCB to the end of the ready list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	285 task -> tc_ready_previous = head -> tc_ready_previous;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	286 (task -> tc_ready_previous) -> tc_ready_next = task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	287 task -> tc_ready_next = head;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	288 (task -> tc_ready_next) -> tc_ready_previous = task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	289
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	290 /* Note that the priority bit map does not need to be
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	291 modified since there are other active tasks at the
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	292 same priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	293 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	294 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	295 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	296
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	297 /* Add the TCB to an empty list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	298 task -> tc_ready_previous = task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	299 task -> tc_ready_next = task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	300 *(task -> tc_priority_head)= task;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	301
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	302 /* Update the priority group bit map to indicate that this
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	303 priority now has a task ready. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	304 TCD_Priority_Groups =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	305 TCD_Priority_Groups \| (task -> tc_priority_group);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	306
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	307 /* Update the sub-priority bit map to show that this priority
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	308 is ready. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	309 *(task -> tc_sub_priority_ptr) =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	310 (*(task -> tc_sub_priority_ptr)) \| task -> tc_sub_priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	311 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	312
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	313 /* Determine the highest priority task in the system. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	314 if (TCD_Priority_Groups & TC_HIGHEST_MASK)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	315
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	316 /* Base of sub-group is 0. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	317 index = 0;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	318
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	319 else if (TCD_Priority_Groups & TC_NEXT_HIGHEST_MASK)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	320
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	321 /* Base of sub-group is 8. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	322 index = 8;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	323
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	324 else if (TCD_Priority_Groups & TC_NEXT_LOWEST_MASK)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	325
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	326 /* Base of sub-group is 16. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	327 index = 16;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	328 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	329
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	330 /* Base of sub-group is 24. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	331 index = 24;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	332
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	333 /* Calculate the highest available priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	334 index = index + TCD_Lowest_Set_Bit[(INT)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	335 ((TCD_Priority_Groups >> index) & TC_HIGHEST_MASK)];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	336
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	337 /* Get the mask of the priority within the group of 8 priorities. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	338 temp = TCD_Sub_Priority_Groups[index];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	339
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	340 /* Calculate the actual priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	341 TCD_Highest_Priority = (index << 3) + TCD_Lowest_Set_Bit[temp];
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	342
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	343 /* Check for preemption. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	344 if ((TCD_Highest_Priority <= ((INT) TCD_Execute_Task -> tc_priority))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	345 && (TCD_Execute_Task -> tc_preemption))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	346 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	347
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	348 /* Update the current task pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	349 TCT_Set_Execute_Task(TCD_Priority_List[TCD_Highest_Priority]);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	350
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	351 /* Now, check and see if the current thread is a task.
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	352 If so, return a status that indicates a context
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	353 switch is needed. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	354 if ((TCD_Current_Thread) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	355 (((TC_TCB *) TCD_Current_Thread) -> tc_id == TC_TASK_ID))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	356
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	357 /* Transfer control to the system. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	358 TCT_Control_To_System();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	359 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	360 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	361 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	362 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	363
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	364 /* Just modify the priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	365 task -> tc_priority = new_priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	366
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	367 /* Build the other priority information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	368 task -> tc_priority = new_priority;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	369 task -> tc_priority_head = &(TCD_Priority_List[new_priority]);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	370 task -> tc_sub_priority = (DATA_ELEMENT) (1 << (new_priority & 7));
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	371 task -> tc_priority_group = ((UNSIGNED) 1) << (new_priority >> 3);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	372 task -> tc_sub_priority_ptr =
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	373 &(TCD_Sub_Priority_Groups[(new_priority >> 3)]);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	374 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	375 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	376 _RTProf_DumpTask(task,RT_PROF_CHANGE_PRIORITY);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	377 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	378 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	379
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	380 /* Release the protection of the scheduling list. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	381 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	382
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	383 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	384 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	385
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	386 /* Return the old priority. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	387 return(old_priority);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	388 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	389
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	390
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	391 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	392 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	393 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	394 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	395 /* TCS_Change_Preemption */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	396 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	397 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	398 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	399 /* This function changes the preemption posture of the calling */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	400 /* task. Preemption for a task may be enabled or disabled. If */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	401 /* it is disabled, the task runs until it suspends or relinquishes. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	402 /* If a preemption is pending, a call to this function to enable */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	403 /* preemption causes a context switch. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	404 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	405 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	406 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	407 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	408 /* TCSE_Change_Preemption Error checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	409 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	410 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	411 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	412 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	413 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	414 /* TCT_Control_To_System Transfer control to system */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	415 /* TCT_Protect Protect scheduling info */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	416 /* TCT_Set_Execute_Task Set TCD_Execute_Task pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	417 /* TCT_Unprotect Release protection of info */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	418 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	419 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	420 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	421 /* preempt Preempt selection parameter */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	422 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	423 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	424 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	425 /* old_preempt Original preempt value */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	426 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	427 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	428 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	429 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	430 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	431 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	432 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	433 /* 03-01-1994 Modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	434 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	435 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	436 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	437 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	438 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	439 OPTION TCS_Change_Preemption(OPTION preempt)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	440 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	441
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	442 TC_TCB task; / Pointer to task */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	443 OPTION old_preempt;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	444 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	445
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	446 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	447 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	448
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	449 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	450
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	451 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	452 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	453
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	454 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	455
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	456 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	457
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	458 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	459 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	460 HIC_Make_History_Entry(NU_CHANGE_PREEMPTION_ID, (UNSIGNED) preempt,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	461 (UNSIGNED) 0, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	462
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	463 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	464
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	465 /* Protect the scheduling information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	466 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	467
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	468 /* Pickup the current thread and place it in the task pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	469 task = (TC_TCB *) TCD_Current_Thread;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	470
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	471 /* Save the old preempt value. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	472 if (task -> tc_preemption)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	473
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	474 /* Previously enabled. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	475 old_preempt = NU_PREEMPT;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	476 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	477
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	478 /* Previously disabled. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	479 old_preempt = NU_NO_PREEMPT;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	480
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	481 /* Process the new value. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	482 if (preempt == NU_NO_PREEMPT)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	483
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	484 /* Disable preemption. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	485 TCD_Execute_Task -> tc_preemption = NU_FALSE;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	486 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	487 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	488
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	489 /* Enable preemption. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	490 task -> tc_preemption = NU_TRUE;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	491
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	492 /* Check for a preemption condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	493 if ((task == TCD_Execute_Task) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	494 (TCD_Highest_Priority < ((INT) TCD_Execute_Task -> tc_priority)))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	495 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	496
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	497 /* Preempt the current task. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	498 TCT_Set_Execute_Task(TCD_Priority_List[TCD_Highest_Priority]);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	499
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	500 /* Transfer control to the system. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	501 TCT_Control_To_System();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	502 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	503 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	504
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	505 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	506 _RTProf_DumpTask(task,RT_PROF_CHANGE_PREEMPTION);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	507 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	508
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	509 /* Release protection of information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	510 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	511
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	512 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	513 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	514
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	515 /* Return the previous preemption posture. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	516 return(old_preempt);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	517 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	518
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	519
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	520 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	521 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	522 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	523 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	524 /* TCS_Change_Time_Slice */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	525 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	526 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	527 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	528 /* This function changes the time slice of the specified task. A */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	529 /* time slice value of 0 disables time slicing. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	530 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	531 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	532 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	533 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	534 /* TCES_Change_Preemption Error checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	535 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	536 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	537 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	538 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	539 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	540 /* TCT_Protect Protect scheduling info */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	541 /* TCT_Unprotect Release protection of info */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	542 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	543 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	544 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	545 /* task_ptr Task control block pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	546 /* time_slice New time slice value */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	547 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	548 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	549 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	550 /* old_time_slice Original time slice value */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	551 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	552 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	553 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	554 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	555 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	556 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	557 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	558 /* 03-01-1994 Modified function interface, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	559 /* added register optimizations, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	560 /* modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	561 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	562 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	563 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	564 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	565 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	566 UNSIGNED TCS_Change_Time_Slice(NU_TASK *task_ptr, UNSIGNED time_slice)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	567 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	568
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	569 TC_TCB task; / Task control block ptr */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	570 UNSIGNED old_time_slice; /* Old time slice value */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	571 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	572
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	573 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	574 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	575
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	576 /* Move input task control block pointer into internal pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	577 task = (TC_TCB *) task_ptr;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	578
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	579
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	580 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	581
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	582 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	583 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	584
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	585 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	586
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	587 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	588
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	589 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	590 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	591 HIC_Make_History_Entry(NU_CHANGE_TIME_SLICE_ID, (UNSIGNED) task,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	592 (UNSIGNED) time_slice, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	593
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	594 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	595
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	596 /* Protect the scheduling information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	597 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	598
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	599 /* Save the old time slice value. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	600 old_time_slice = task -> tc_time_slice;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	601
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	602 /* Store the new time slice value. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	603 task -> tc_time_slice = time_slice;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	604 task -> tc_cur_time_slice = time_slice;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	605
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	606 /* Bug fix. Let the system know we have started a new time slice */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	607 TMD_Time_Slice_State = TM_ACTIVE;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	608
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	609 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	610 _RTProf_DumpTask(task,RT_PROF_CHANGE_TIME_SLICE);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	611 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	612 /* Release protection of information. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	613 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	614
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	615 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	616 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	617
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	618 /* Return the previous time slice value. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	619 return(old_time_slice);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	620 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	621
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	622
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	623 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	624 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	625 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	626 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	627 /* TCS_Control_Signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	628 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	629 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	630 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	631 /* This function enables the specified signals and returns the */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	632 /* previous enable signal value back to the caller. If a newly */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	633 /* enabled signal is present and a signal handler is registered, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	634 /* signal handling is started. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	635 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	636 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	637 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	638 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	639 /* TCSE_Control_Signals Error checking shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	640 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	641 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	642 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	643 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	644 /* TCC_Signal_Shell Task signal execution */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	645 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	646 /* TCT_Protect Protect against other access */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	647 /* TCT_Unprotect Release protection */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	648 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	649 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	650 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	651 /* enable_signal_mask Enable signal mask */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	652 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	653 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	654 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	655 /* Previous signal enable mask */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	656 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	657 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	658 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	659 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	660 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	661 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	662 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	663 /* 05-15-1993 Corrected problem with a comment */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	664 /* 05-15-1993 Verified comment repair */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	665 /* 03-01-1994 Added register optimizations, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	666 /* modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	667 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	668 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	669 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	670 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	671 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	672 UNSIGNED TCS_Control_Signals(UNSIGNED enable_signal_mask)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	673 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	674
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	675 R1 TC_TCB task; / Task pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	676 UNSIGNED old_enable_mask; /* Old enable signal mask */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	677 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	678
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	679 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	680 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	681
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	682 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	683
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	684 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	685 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	686
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	687 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	688
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	689 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	690
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	691 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	692 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	693 HIC_Make_History_Entry(NU_CONTROL_SIGNALS_ID,(UNSIGNED) enable_signal_mask,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	694 (UNSIGNED) 0, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	695
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	696 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	697
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	698 /* Pickup the task pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	699 task = (TC_TCB *) TCD_Current_Thread;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	700
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	701 /* Protect against simultaneous access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	702 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	703
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	704 /* Pickup the old signal mask. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	705 old_enable_mask = task -> tc_enabled_signals;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	706
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	707 /* Put the new mask in. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	708 task -> tc_enabled_signals = enable_signal_mask;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	709
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	710 /* Now, determine if the signal handler needs to be invoked. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	711 if ((enable_signal_mask & task -> tc_signals) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	712 (!task -> tc_signal_active) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	713 (task -> tc_signal_handler))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	714 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	715
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	716 /* Signal processing is required. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	717
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	718 /* Indicate that signal processing is in progress. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	719 task -> tc_signal_active = NU_TRUE;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	720
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	721 /* Clear the saved stack pointer to indicate that this is an
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	722 in line signal handler call. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	723 task -> tc_saved_stack_ptr = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	724
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	725 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	726 _RTProf_DumpTask(task,RT_PROF_CONTROL_SIGNALS);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	727 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	728
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	729 /* Release protection from multiple access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	730 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	731
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	732 /* Call the signal handling shell. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	733 TCC_Signal_Shell();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	734 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	735 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	736 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	737
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	738 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	739 _RTProf_DumpTask(task,RT_PROF_CONTROL_SIGNALS);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	740 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	741
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	742 /* Release protection. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	743 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	744 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	745
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	746 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	747 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	748
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	749 /* Return the old enable mask. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	750 return(old_enable_mask);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	751 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	752
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	753
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	754 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	755 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	756 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	757 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	758 /* TCS_Receive_Signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	759 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	760 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	761 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	762 /* This function returns the current signals back to the caller. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	763 /* Note that the signals are cleared automatically. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	764 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	765 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	766 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	767 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	768 /* TCSE_Receive_Signals Error checking shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	769 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	770 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	771 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	772 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	773 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	774 /* TCT_Protect Protect against other access */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	775 /* TCT_Unprotect Release protection */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	776 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	777 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	778 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	779 /* None */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	780 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	781 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	782 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	783 /* Current signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	784 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	785 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	786 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	787 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	788 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	789 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	790 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	791 /* 03-01-1994 Modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	792 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	793 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	794 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	795 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	796 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	797 UNSIGNED TCS_Receive_Signals(VOID)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	798 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	799
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	800 TC_TCB task; / Task pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	801 UNSIGNED signals; /* Current signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	802 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	803
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	804 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	805 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	806
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	807 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	808
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	809 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	810 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	811
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	812 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	813
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	814 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	815
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	816 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	817 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	818 HIC_Make_History_Entry(NU_RECEIVE_SIGNALS_ID, (UNSIGNED) 0,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	819 (UNSIGNED) 0, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	820
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	821 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	822
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	823 /* Pickup the task pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	824 task = (TC_TCB *) TCD_Current_Thread;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	825
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	826 /* Protect against simultaneous access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	827 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	828
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	829 /* Pickup the current events. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	830 signals = task -> tc_signals;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	831
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	832 /* Clear the current signals. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	833 task -> tc_signals = 0;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	834
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	835 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	836 _RTProf_DumpTask(task,RT_PROF_RECEIVE_SIGNALS);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	837 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	838
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	839 /* Release protection. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	840 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	841
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	842 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	843 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	844
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	845 /* Return the signals to the caller. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	846 return(signals);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	847 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	848
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	849
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	850 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	851 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	852 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	853 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	854 /* TCS_Register_Signal_Handler */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	855 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	856 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	857 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	858 /* This function registers a signal handler for the calling task. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	859 /* Note that if an enabled signal is present and this is the first */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	860 /* registered signal handler call, the signal is processed */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	861 /* immediately. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	862 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	863 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	864 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	865 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	866 /* TCSE_Register_Signal_Handler Error checking shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	867 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	868 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	869 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	870 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	871 /* TCC_Signal_Shell Signal execution shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	872 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	873 /* TCT_Protect Protect against other access */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	874 /* TCT_Unprotect Release protection */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	875 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	876 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	877 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	878 /* signal_handler Signal execution shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	879 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	880 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	881 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	882 /* NU_SUCCESS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	883 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	884 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	885 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	886 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	887 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	888 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	889 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	890 /* 05-15-1993 Corrected problem with a comment */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	891 /* 05-15-1993 Verified comment repair */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	892 /* 03-01-1994 Added register optimizations, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	893 /* modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	894 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	895 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	896 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	897 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	898 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	899 STATUS TCS_Register_Signal_Handler(VOID (*signal_handler)(UNSIGNED))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	900 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	901
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	902 R1 TC_TCB task; / Task pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	903 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	904
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	905 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	906 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	907
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	908 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	909
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	910 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	911 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	912
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	913 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	914
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	915 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	916
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	917 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	918 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	919 HIC_Make_History_Entry(NU_REGISTER_SIGNAL_HANDLER_ID,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	920 (UNSIGNED) signal_handler, (UNSIGNED) 0, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	921
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	922 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	923
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	924 /* Pickup the task pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	925 task = (TC_TCB *) TCD_Current_Thread;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	926
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	927 /* Protect against simultaneous access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	928 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	929
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	930 /* Put the new signal handler in. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	931 task -> tc_signal_handler = signal_handler;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	932
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	933 /* Now, determine if the signal handler needs to be invoked. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	934 if ((task -> tc_enabled_signals & task -> tc_signals) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	935 (!task -> tc_signal_active) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	936 (task -> tc_signal_handler))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	937 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	938
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	939 /* Signal processing is required. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	940
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	941 /* Indicate that signal processing is in progress. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	942 task -> tc_signal_active = NU_TRUE;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	943
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	944 /* Clear the saved stack pointer to indicate that this is an
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	945 in line signal handler call. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	946 task -> tc_saved_stack_ptr = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	947
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	948 /* Release protection from multiple access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	949 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	950
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	951 /* Call the signal handling shell. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	952 TCC_Signal_Shell();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	953 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	954 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	955
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	956 /* Release protection. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	957 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	958
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	959 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	960 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	961
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	962 /* Return success. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	963 return(NU_SUCCESS);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	964 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	965
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	966
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	967 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	968 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	969 /* FUNCTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	970 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	971 /* TCS_Send_Signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	972 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	973 /* DESCRIPTION */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	974 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	975 /* This function sends the specified task the specified signals. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	976 /* If enabled, the specified task is setup in order to process the */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	977 /* signals. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	978 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	979 /* CALLED BY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	980 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	981 /* Application */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	982 /* TCSE_Send_Signals Error checking shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	983 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	984 /* CALLS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	985 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	986 /* [HIC_Make_History_Entry] Make entry in history log */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	987 /* TCC_Resume_Task Resume task that is suspended*/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	988 /* TCC_Signal_Shell Signal execution shell */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	989 /* TCT_Build_Signal_Frame Build a signal frame */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	990 /* [TCT_Check_Stack] Stack checking function */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	991 /* TCT_Control_To_System Control to system */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	992 /* TCT_Protect Protect against other access */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	993 /* TCT_Unprotect Release protection */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	994 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	995 /* INPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	996 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	997 /* task_ptr Task pointer */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	998 /* signals Signals to send to the task */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	999 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1000 /* OUTPUTS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1001 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1002 /* NU_SUCCESS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1003 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1004 /* HISTORY */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1005 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1006 /* DATE REMARKS */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1007 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1008 /* 03-01-1993 Created initial version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1009 /* 04-19-1993 Verified version 1.0 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1010 /* 03-01-1994 Modified function interface, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1011 /* added register optimizations, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1012 /* modified protection logic, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1013 /* resulting in version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1014 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1015 /* 03-18-1994 Verified version 1.1 */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1016 /* 04-04-1996 On line 995, changed tc_signals */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1017 /* to tc_enabled_signals, */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1018 /* resulting in version 1.1+ */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1019 /* (spr 107) */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1020 /* */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1021 /*************************************************************************/
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1022 STATUS TCS_Send_Signals(NU_TASK *task_ptr, UNSIGNED signals)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1023 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1024
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1025 R1 TC_TCB task; / Task control block ptr */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1026 NU_SUPERV_USER_VARIABLES
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1027
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1028 /* Switch to supervisor mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1029 NU_SUPERVISOR_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1030
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1031 /* Move input task control block pointer into internal pointer. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1032 task = (TC_TCB *) task_ptr;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1033
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1034
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1035 #ifdef NU_ENABLE_STACK_CHECK
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1036
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1037 /* Call stack checking function to check for an overflow condition. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1038 TCT_Check_Stack();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1039
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1040 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1041
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1042 #ifdef NU_ENABLE_HISTORY
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1043
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1044 /* Make an entry that corresponds to this function in the system history
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1045 log. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1046 HIC_Make_History_Entry(NU_SEND_SIGNALS_ID, (UNSIGNED) signals,
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1047 (UNSIGNED) 0, (UNSIGNED) 0);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1048
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1049 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1050
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1051 /* Protect against simultaneous access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1052 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1053
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1054 /* Or the new signals into the current signals. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1055 task -> tc_signals = task -> tc_signals \| signals;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1056
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1057 #ifdef INCLUDE_PROVIEW
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1058 _RTProf_DumpTask(task,RT_PROF_SEND_SIGNALS);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1059 #endif
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1060 /* Now, determine if the signal handler needs to be invoked. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1061 if ((task -> tc_signals & task -> tc_enabled_signals) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1062 (!task -> tc_signal_active) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1063 (task -> tc_status != NU_TERMINATED) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1064 (task -> tc_status != NU_FINISHED) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1065 (task -> tc_signal_handler))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1066 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1067
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1068 /* Indicate that signal processing is in progress. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1069 task -> tc_signal_active = NU_TRUE;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1070
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1071 /* Signal processing is required. Determine if the task is sending
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1072 signals to itself or if the calling thread is not the current
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1073 task. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1074 if (task == (TC_TCB *) TCD_Current_Thread)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1075 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1076
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1077 /* Task sending signals to itself. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1078
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1079 /* Clear the saved stack pointer to indicate that this is an
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1080 in line signal handler call. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1081 task -> tc_saved_stack_ptr = NU_NULL;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1082
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1083 /* Release protection from multiple access. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1084 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1085
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1086 /* Call the signal handling shell. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1087 TCC_Signal_Shell();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1088 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1089 else
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1090 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1091
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1092 /* Target task must be prepared to receive the signals. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1093
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1094 /* First, insure that the target task is not in a protected
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1095 area. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1096 do
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1097 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1098
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1099 /* Check for protection. Remember that protection is still
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1100 in effect. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1101 if (task -> tc_current_protect)
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1102 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1103
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1104 /* Yes, target task is in a protected mode. Release
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1105 the protection on the scheduling list and transfer
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1106 control briefly to the target task. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1107 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1108
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1109 /* Switch to the protected task and wait until the
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1110 task is not protected. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1111 TCT_Protect_Switch(task);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1112
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1113 /* Restore protection on the scheduling structures. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1114 TCT_Protect(&TCD_System_Protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1115 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1116 } while (task -> tc_current_protect);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1117
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1118 /* Copy the current status and stack pointer to the signal save
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1119 areas. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1120 task -> tc_saved_status = task -> tc_status;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1121 task -> tc_saved_stack_ptr = task -> tc_stack_pointer;
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1122
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1123 /* Build a stack frame for the signal handling shell function. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1124 TCT_Build_Signal_Frame(task);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1125
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1126 /* Determine if the target task is currently suspended. If it is
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1127 suspended for any other reason than a pure suspend, resume
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1128 it. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1129 if ((task -> tc_status != NU_READY) &&
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1130 (task -> tc_status != NU_PURE_SUSPEND))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1131 {
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1132
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1133 /* Resume the target task and check for preemption. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1134 if (TCC_Resume_Task(task_ptr, task -> tc_status))
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1135
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1136 /* Preemption needs to take place. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1137 TCT_Control_To_System();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1138 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1139 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1140 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1141
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1142 /* Release protection, no signals are currently enabled. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1143 TCT_Unprotect();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1144
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1145 /* Return to user mode */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1146 NU_USER_MODE();
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1147
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1148 /* Return a successful status. */
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1149 return(NU_SUCCESS);
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1150 }
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1151
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1152
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1153
0f80e1e4dce4 src/nucleus: library C code import from FreeNucleus package Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1154

FreeCalypso > hg > fc-selenite

annotate src/nucleus/tcs.c @ 158:8fe0cde2fd79