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annotate src/gpf2/osl/os_sem_ir.c @ 624:012028896cfb

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FFS dev.c, Leonardo target: Fujitsu MB84VF5F5F4J2 #if 0'ed out The FFS code we got from TI/Openmoko had a stanza for "Fujitsu MB84VF5F5F4J2 stacked device", using a fake device ID code that would need to be patched manually into cfgffs.c (suppressing and overriding autodetection) and using an FFS base address in the nCS2 bank, indicating that this FFS config was probably meant for the MCP version of Leonardo which allows for 16 MiB flash with a second bank on nCS2. We previously had this FFS config stanza conditionalized under CONFIG_TARGET_LEONARDO because the base address contained therein is invalid for other targets, but now that we actually have a Leonardo build target in FC Magnetite, I realize that the better approach is to #if 0 out this stanza altogether: it is already non-functional because it uses a fake device ID code, thus it is does not add support for more Leonardo board variants, instead it is just noise.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Dec 2019 21:24:29 +0000
parents 094ecae40880
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 "nucleus.h"
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10 #include "typedefs.h"
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11 #include "os.h"
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12 #include "gdi.h"
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13 #include "os_types.h"
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14 #include "os_glob.h"
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15
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16 extern T_OS_SEM_TABLE_ENTRY SemTable[];
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17 extern unsigned os_time_to_tick_multiplier;
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18
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19 int
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20 ReleaseSemaphoreCB(NU_SEMAPHORE *SemCB)
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21 {
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22 if (NU_Release_Semaphore(SemCB) == NU_SUCCESS)
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23 return(OS_OK);
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24 else
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25 return(OS_ERROR);
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26 }
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27
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28 GLOBAL LONG
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29 os_ReleaseSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle)
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30 {
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31 if (NU_Release_Semaphore(&SemTable[SemHandle].SemCB) == NU_SUCCESS)
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32 return(OS_OK);
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33 else
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34 return(OS_ERROR);
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35 }
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36
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37 int
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38 ObtainSemaphoreCB(NU_SEMAPHORE *SemCB, ULONG Timeout, USHORT wait_check)
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39 {
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40 UNSIGNED nu_timeout;
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41 STATUS sts;
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42 int ret;
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43
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44 ret = OS_OK;
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45 if (Timeout != OS_SUSPEND)
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46 nu_timeout = TIME_TO_SYSTEM_TICKS(Timeout);
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47 else if (wait_check == 1)
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48 nu_timeout = 1;
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49 else
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50 nu_timeout = NU_SUSPEND;
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51 for (;;) {
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52 sts = NU_Obtain_Semaphore(SemCB, nu_timeout);
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53 switch (sts) {
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54 case NU_SUCCESS:
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55 return(ret);
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56 case NU_INVALID_SEMAPHORE:
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57 return(OS_ERROR);
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58 case NU_INVALID_SUSPEND:
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59 nu_timeout = 0;
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60 continue;
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61 case NU_TIMEOUT:
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62 case NU_UNAVAILABLE:
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63 if (nu_timeout == 1 && wait_check == 1) {
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64 nu_timeout = NU_SUSPEND;
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65 ret = OS_WAITED;
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66 continue;
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67 }
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68 return(OS_TIMEOUT);
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69 default:
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70 /*
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71 * Disassembly reveals that the original code
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72 * has an endless loop here, the equivalent
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73 * of continue. My guess is that they simply
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74 * forgot the default case, and so control
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75 * falls onto the closing brace of the switch
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76 * and then onto the closing brace of the for
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77 * loop. But I prefer better error handling,
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78 * hence the present addition. - Space Falcon
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79 */
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80 return(OS_ERROR);
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81 }
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82 }
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83 }
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84
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85 GLOBAL LONG
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86 os_ObtainSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle, ULONG Timeout)
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87 {
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88 if (SemHandle > MaxSemaphores)
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89 return(OS_ERROR);
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90 return ObtainSemaphoreCB(&SemTable[SemHandle].SemCB, Timeout, 0);
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91 }