FreeCalypso > hg > freecalypso-sw

annotate gsm-fw/gpf/osl/os_sem_ir.c @ 1019:69d6da9ee188

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doc/FC-on-Compal: update for voice calls working with the FR codec
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sat, 23 Apr 2016 05:03:38 +0000
parents d2b93cfe8e4c
children
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1 /*
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2 * This C module is a reconstruction based on the disassembly of
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3 * os_sem.obj in frame_na7_db_ir.lib from the Leonardo package.
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4 */
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5
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6 /* set of included headers from COFF symtab: */
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include "gpfconf.h" /* FreeCalypso addition */
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10 #include "../../nucleus/nucleus.h"
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11 #include "typedefs.h"
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12 #include "os.h"
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13 #include "gdi.h"
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14 #include "os_types.h"
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15 #include "os_glob.h"
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16
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17 extern T_OS_SEM_TABLE_ENTRY SemTable[];
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18 extern unsigned os_time_to_tick_multiplier;
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19
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20 int
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21 ReleaseSemaphoreCB(NU_SEMAPHORE *SemCB)
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22 {
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23 if (NU_Release_Semaphore(SemCB) == NU_SUCCESS)
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24 return(OS_OK);
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25 else
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26 return(OS_ERROR);
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27 }
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28
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29 GLOBAL LONG
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30 os_ReleaseSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle)
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31 {
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32 if (NU_Release_Semaphore(&SemTable[SemHandle].SemCB) == NU_SUCCESS)
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33 return(OS_OK);
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34 else
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35 return(OS_ERROR);
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36 }
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37
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38 int
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39 ObtainSemaphoreCB(NU_SEMAPHORE *SemCB, ULONG Timeout, USHORT wait_check)
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40 {
452
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41 UNSIGNED nu_timeout;
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42 STATUS sts;
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43 int ret;
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44
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45 ret = OS_OK;
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46 if (Timeout != OS_SUSPEND)
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47 nu_timeout = TIME_TO_SYSTEM_TICKS(Timeout);
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48 else if (wait_check == 1)
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49 nu_timeout = 1;
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50 else
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51 nu_timeout = NU_SUSPEND;
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52 for (;;) {
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53 sts = NU_Obtain_Semaphore(SemCB, nu_timeout);
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54 switch (sts) {
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55 case NU_SUCCESS:
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56 return(ret);
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57 case NU_INVALID_SEMAPHORE:
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58 return(OS_ERROR);
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59 case NU_INVALID_SUSPEND:
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60 nu_timeout = 0;
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61 continue;
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62 case NU_TIMEOUT:
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63 case NU_UNAVAILABLE:
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64 if (nu_timeout == 1 && wait_check == 1) {
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65 nu_timeout = NU_SUSPEND;
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66 ret = OS_WAITED;
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67 continue;
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68 }
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69 return(OS_TIMEOUT);
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70 default:
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71 /*
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72 * Disassembly reveals that the original code
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73 * has an endless loop here, the equivalent
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74 * of continue. My guess is that they simply
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75 * forgot the default case, and so control
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76 * falls onto the closing brace of the switch
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77 * and then onto the closing brace of the for
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78 * loop. But I prefer better error handling,
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79 * hence the present addition. - Space Falcon
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80 */
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81 return(OS_ERROR);
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82 }
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83 }
450
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84 }
453
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85
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86 GLOBAL LONG
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87 os_ObtainSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle, ULONG Timeout)
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88 {
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89 if (SemHandle > MaxSemaphores)
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90 return(OS_ERROR);
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91 return ObtainSemaphoreCB(&SemTable[SemHandle].SemCB, Timeout, 0);
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92 }