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| Rev | Author | Line No. | Line |
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| 1906 | serge | 1 | /* Reentrant version of gettimeofday system call |
| 2 | This implementation just calls the times/gettimeofday system calls. |
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| 3 | Gettimeofday may not be available on all targets. It's presence |
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| 4 | here is dubious. Consider it for internal use only. */ |
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| 5 | |||
| 6 | #include |
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| 7 | #include |
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| 8 | #include |
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| 9 | #include |
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| 10 | #include <_syslist.h> |
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| 11 | #include |
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| 12 | |||
| 13 | /* Some targets provides their own versions of these functions. Those |
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| 14 | targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */ |
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| 15 | |||
| 16 | #ifdef _REENT_ONLY |
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| 17 | #ifndef REENTRANT_SYSCALLS_PROVIDED |
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| 18 | #define REENTRANT_SYSCALLS_PROVIDED |
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| 19 | #endif |
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| 20 | #endif |
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| 21 | |||
| 22 | #ifdef REENTRANT_SYSCALLS_PROVIDED |
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| 23 | |||
| 24 | int _dummy_gettimeofday_syscalls = 1; |
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| 25 | |||
| 26 | #else |
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| 27 | |||
| 28 | /* We use the errno variable used by the system dependent layer. */ |
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| 29 | #undef errno |
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| 30 | static int errno; |
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| 31 | |||
| 32 | /* |
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| 33 | FUNCTION |
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| 34 | <<_gettimeofday_r>>---Reentrant version of gettimeofday |
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| 35 | |||
| 36 | INDEX |
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| 37 | _gettimeofday_r |
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| 38 | |||
| 39 | ANSI_SYNOPSIS |
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| 40 | #include |
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| 41 | #include |
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| 42 | int _gettimeofday_r(struct _reent *<[ptr]>, |
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| 43 | struct timeval *<[ptimeval]>, |
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| 44 | void *<[ptimezone]>); |
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| 45 | |||
| 46 | TRAD_SYNOPSIS |
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| 47 | #include |
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| 48 | #include |
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| 49 | int _gettimeofday_r(<[ptr]>, <[ptimeval]>, <[ptimezone]>) |
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| 50 | struct _reent *<[ptr]>; |
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| 51 | struct timeval *<[ptimeval]>; |
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| 52 | void *<[ptimezone]>; |
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| 53 | |||
| 54 | DESCRIPTION |
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| 55 | This is a reentrant version of < |
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| 56 | takes a pointer to the global data block, which holds |
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| 57 | < |
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| 58 | |||
| 59 | This function is only available for a few targets. |
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| 60 | Check libc.a to see if its available on yours. |
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| 61 | */ |
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| 62 | |||
| 63 | int |
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| 64 | _DEFUN (_gettimeofday_r, (ptr, ptimeval, ptimezone), |
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| 65 | struct _reent *ptr _AND |
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| 66 | struct timeval *ptimeval _AND |
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| 67 | void *ptimezone) |
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| 68 | { |
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| 69 | int ret; |
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| 70 | |||
| 71 | errno = 0; |
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| 72 | if ((ret = _gettimeofday (ptimeval, ptimezone)) == -1 && errno != 0) |
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| 73 | ptr->_errno = errno; |
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| 74 | return ret; |
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| 75 | } |
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| 76 | |||
| 77 | #define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10) |
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| 78 | |||
| 79 | int |
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| 80 | _gettimeofday (struct timeval *tv, void *tz) |
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| 81 | { |
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| 82 | unsigned int xtmp; |
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| 83 | struct tm tmblk; |
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| 84 | |||
| 85 | if( tv ) |
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| 86 | { |
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| 87 | tv->tv_usec = 0; |
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| 88 | |||
| 89 | __asm__ __volatile__("int $0x40":"=a"(xtmp):"0"(3)); |
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| 90 | tmblk.tm_sec = (xtmp>>16)&0xff; |
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| 91 | tmblk.tm_min = (xtmp>>8)&0xff; |
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| 92 | tmblk.tm_hour = xtmp&0xff; |
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| 93 | BCD_TO_BIN(tmblk.tm_sec); |
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| 94 | BCD_TO_BIN(tmblk.tm_min); |
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| 95 | BCD_TO_BIN(tmblk.tm_hour); |
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| 96 | __asm__ __volatile__("int $0x40":"=a"(xtmp):"0"(29)); |
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| 97 | tmblk.tm_mday = (xtmp>>16)&0xff; |
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| 98 | tmblk.tm_mon = ((xtmp>>8)&0xff)-1; |
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| 99 | tmblk.tm_year = ((xtmp&0xff)+2000)-1900; |
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| 100 | tmblk.tm_wday = tmblk.tm_yday = 0; |
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| 101 | tmblk.tm_isdst = -1; |
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| 102 | tv->tv_sec = mktime(&tmblk); |
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| 103 | return 0; |
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| 104 | } |
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| 105 | else |
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| 106 | { |
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| 107 | errno = EINVAL; |
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| 108 | return -1; |
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| 109 | }; |
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| 110 | } |
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| 111 | |||
| 112 | |||
| 113 | #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */ |