FreeCalypso > hg > fc-magnetite

annotate src/gpf2/osl/os_sem_ir.c @ 683:81394dcdf4d3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
uartfax.c: OM-style wakeup interrupt implemented for Tango
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Jun 2020 03:06:16 +0000
parents 094ecae40880
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
487
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This C module is a reconstruction based on the disassembly of
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * os_sem.obj in frame_na7_db_ir.lib from the Leonardo package.
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 /* set of included headers from COFF symtab: */
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <stdio.h>
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <string.h>
500
094ecae40880 OSL: os_sem_ir.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 487
diff changeset
9 #include "nucleus.h"
487
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include "typedefs.h"
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include "os.h"
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include "gdi.h"
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include "os_types.h"
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include "os_glob.h"
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 extern T_OS_SEM_TABLE_ENTRY SemTable[];
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 extern unsigned os_time_to_tick_multiplier;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 int
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 ReleaseSemaphoreCB(NU_SEMAPHORE *SemCB)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 if (NU_Release_Semaphore(SemCB) == NU_SUCCESS)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 else
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 GLOBAL LONG
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 os_ReleaseSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 if (NU_Release_Semaphore(&SemTable[SemHandle].SemCB) == NU_SUCCESS)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 else
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 int
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 ObtainSemaphoreCB(NU_SEMAPHORE *SemCB, ULONG Timeout, USHORT wait_check)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 UNSIGNED nu_timeout;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 STATUS sts;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 int ret;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 ret = OS_OK;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 if (Timeout != OS_SUSPEND)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 nu_timeout = TIME_TO_SYSTEM_TICKS(Timeout);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 else if (wait_check == 1)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 nu_timeout = 1;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 else
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 nu_timeout = NU_SUSPEND;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 for (;;) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 sts = NU_Obtain_Semaphore(SemCB, nu_timeout);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 switch (sts) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 case NU_SUCCESS:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 return(ret);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 case NU_INVALID_SEMAPHORE:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 case NU_INVALID_SUSPEND:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 nu_timeout = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 continue;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 case NU_TIMEOUT:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 case NU_UNAVAILABLE:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 if (nu_timeout == 1 && wait_check == 1) {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 nu_timeout = NU_SUSPEND;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 ret = OS_WAITED;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 continue;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 return(OS_TIMEOUT);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 default:
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 /*
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 * Disassembly reveals that the original code
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 * has an endless loop here, the equivalent
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 * of continue. My guess is that they simply
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 * forgot the default case, and so control
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 * falls onto the closing brace of the switch
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 * and then onto the closing brace of the for
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 * loop. But I prefer better error handling,
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 * hence the present addition. - Space Falcon
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 */
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 GLOBAL LONG
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 os_ObtainSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle, ULONG Timeout)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 {
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 if (SemHandle > MaxSemaphores)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 return(OS_ERROR);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 return ObtainSemaphoreCB(&SemTable[SemHandle].SemCB, Timeout, 0);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 }