FreeCalypso > hg > fc-tourmaline
view src/nucleus/pise.c @ 268:f2e52cab0a73
abb_inth.c: check all interrupt causes, not just one
The original code used if - else if - else if etc constructs, thus
the first detected interrupt was the only one handled. However,
Iota ITSTATREG is a clear-on-read register, thus if we only handle
the first detected interrupt and skip checking the others, then the
other interrupts will be lost, if more than one interrupt happened
to occur in one ABB interrupt handling cycle - a form of rare race
condition. Change the code to check all interrupts that were read
in this cycle.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 13 Jun 2021 18:17:53 +0000 |
| parents | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* pise.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* PI - Pipe Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains error checking routines for supplemental */ /* functions of the Pipe component. This permits easy removal of */ /* error checking logic when it is not needed. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* PISE_Reset_Pipe Reset a pipe */ /* PISE_Send_To_Front_Of_Pipe Send message to pipe's front */ /* PISE_Broadcast_To_Pipe Broadcast message to pipe */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* pi_extr.h Pipe functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Created initial version 1.1 from */ /* routines originally in core */ /* error checking file */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3. */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "cs_extr.h" /* Common service functions */ #include "tc_extr.h" /* Thread control functions */ #include "pi_extr.h" /* Pipe functions */ /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PISE_Reset_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameter supplied */ /* to the pipe reset function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIS_Reset_Pipe Actual reset pipe function */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PISE_Reset_Pipe(NU_PIPE *pipe_ptr) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else /* All the parameters are okay, call the actual function to reset a pipe. */ status = PIS_Reset_Pipe(pipe_ptr); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PISE_Send_To_Front_Of_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the send message to front of pipe function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIS_Send_To_Front_Of_Pipe Actual send to front of pipe */ /* function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* message Pointer to message to send */ /* size Size of message to send */ /* suspend Suspension option if full */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_POINTER Invalid message pointer */ /* NU_INVALID_SIZE Invalid message size */ /* NU_INVALID_SUSPEND Invalid suspend request */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PISE_Send_To_Front_Of_Pipe(NU_PIPE *pipe_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (message == NU_NULL) /* Indicate that the pointer to the message is invalid. */ status = NU_INVALID_POINTER; else if (size == 0) /* Indicate that the message size is invalid */ status = NU_INVALID_SIZE; else if ((pipe -> pi_fixed_size) && (size != pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((!pipe -> pi_fixed_size) && (size > pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a non-task thread. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to send a message to a pipe. */ status = PIS_Send_To_Front_Of_Pipe(pipe_ptr, message, size, suspend); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PISE_Broadcast_To_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the broadcast message to pipe function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIS_Broadcast_To_Pipe Actual broadcast message to */ /* pipe function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* message Pointer to message to send */ /* size Size of message to send */ /* suspend Suspension option if full */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_POINTER Invalid message pointer */ /* NU_INVALID_SIZE Invalid message size */ /* NU_INVALID_SUSPEND Invalid suspend request */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PISE_Broadcast_To_Pipe(NU_PIPE *pipe_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (message == NU_NULL) /* Indicate that the pointer to the message is invalid. */ status = NU_INVALID_POINTER; else if (size == 0) /* Indicate that the message size is invalid */ status = NU_INVALID_SIZE; else if ((pipe -> pi_fixed_size) && (size != pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((!pipe -> pi_fixed_size) && (size > pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a non-task thread. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to broadcast a message to a pipe. */ status = PIS_Broadcast_To_Pipe(pipe_ptr, message, size, suspend); /* Return completion status. */ return(status); }