[444] | 1 | #include <_ansi.h> |
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| 2 | #include <sys/types.h> |
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| 3 | #include <sys/stat.h> |
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| 4 | #include <sys/time.h> |
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| 5 | #include "sys/syscall.h" |
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| 6 | int errno; |
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| 7 | |
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| 8 | /* This is used by _sbrk. */ |
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| 9 | register char *stack_ptr asm ("r15"); |
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| 10 | |
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| 11 | int |
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| 12 | _read (int file, |
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| 13 | char *ptr, |
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| 14 | int len) |
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| 15 | { |
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| 16 | return __trap34 (SYS_read, file, ptr, len); |
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| 17 | } |
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| 18 | |
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| 19 | int |
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| 20 | _lseek (int file, |
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| 21 | int ptr, |
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| 22 | int dir) |
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| 23 | { |
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| 24 | return __trap34 (SYS_lseek, file, ptr, dir); |
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| 25 | } |
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| 26 | |
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| 27 | int |
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| 28 | _write ( int file, |
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| 29 | char *ptr, |
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| 30 | int len) |
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| 31 | { |
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| 32 | return __trap34 (SYS_write, file, ptr, len); |
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| 33 | } |
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| 34 | |
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| 35 | int |
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| 36 | _close (int file) |
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| 37 | { |
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| 38 | return __trap34 (SYS_close, file, 0, 0); |
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| 39 | } |
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| 40 | |
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| 41 | int |
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| 42 | _link (char *old, char *new) |
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| 43 | { |
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| 44 | return -1; |
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| 45 | } |
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| 46 | |
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| 47 | caddr_t |
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| 48 | _sbrk (int incr) |
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| 49 | { |
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| 50 | extern char end; /* Defined by the linker */ |
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| 51 | static char *heap_end; |
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| 52 | char *prev_heap_end; |
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| 53 | |
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| 54 | if (heap_end == 0) |
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| 55 | { |
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| 56 | heap_end = &end; |
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| 57 | } |
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| 58 | prev_heap_end = heap_end; |
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| 59 | if (heap_end + incr > stack_ptr) |
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| 60 | { |
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| 61 | _write (1, "Heap and stack collision\n", 25); |
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| 62 | abort (); |
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| 63 | } |
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| 64 | heap_end += incr; |
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| 65 | return (caddr_t) prev_heap_end; |
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| 66 | } |
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| 67 | |
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| 68 | int |
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| 69 | _fstat (int file, |
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| 70 | struct stat *st) |
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| 71 | { |
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| 72 | st->st_mode = S_IFCHR; |
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| 73 | return 0; |
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| 74 | } |
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| 75 | |
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| 76 | int |
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| 77 | _open (const char *path, |
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| 78 | int flags) |
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| 79 | { |
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| 80 | return __trap34 (SYS_open, path, flags, 0); |
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| 81 | } |
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| 82 | |
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| 83 | int |
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| 84 | _creat (const char *path, |
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| 85 | int mode) |
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| 86 | { |
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| 87 | return __trap34 (SYS_creat, path, mode, 0); |
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| 88 | } |
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| 89 | |
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| 90 | int |
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| 91 | _unlink () |
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| 92 | { |
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| 93 | return -1; |
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| 94 | } |
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| 95 | |
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| 96 | isatty (fd) |
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| 97 | int fd; |
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| 98 | { |
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| 99 | return 1; |
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| 100 | } |
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| 101 | |
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| 102 | _isatty (fd) |
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| 103 | int fd; |
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| 104 | { |
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| 105 | return 1; |
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| 106 | } |
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| 107 | |
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| 108 | |
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| 109 | _exit (n) |
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| 110 | { |
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| 111 | return __trap34 (SYS_exit, n, 0, 0); |
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| 112 | } |
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| 113 | |
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| 114 | _kill (n, m) |
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| 115 | { |
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| 116 | return __trap34 (SYS_exit, 0xdead, 0, 0); |
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| 117 | } |
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| 118 | |
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| 119 | _getpid (n) |
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| 120 | { |
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| 121 | return 1; |
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| 122 | } |
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| 123 | |
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| 124 | _raise () |
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| 125 | { |
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| 126 | } |
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| 127 | |
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| 128 | int |
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| 129 | _stat (const char *path, struct stat *st) |
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| 130 | |
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| 131 | { |
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| 132 | return __trap34 (SYS_stat, path, st, 0); |
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| 133 | } |
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| 134 | |
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| 135 | int |
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| 136 | _chmod (const char *path, short mode) |
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| 137 | { |
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| 138 | return __trap34 (SYS_chmod, path, mode); |
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| 139 | } |
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| 140 | |
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| 141 | int |
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| 142 | _chown (const char *path, short owner, short group) |
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| 143 | { |
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| 144 | return __trap34 (SYS_chown, path, owner, group); |
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| 145 | } |
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| 146 | |
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| 147 | int |
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| 148 | _utime (path, times) |
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| 149 | const char *path; |
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| 150 | char *times; |
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| 151 | { |
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| 152 | return __trap34 (SYS_utime, path, times); |
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| 153 | } |
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| 154 | |
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| 155 | int |
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| 156 | _fork () |
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| 157 | { |
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| 158 | return __trap34 (SYS_fork); |
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| 159 | } |
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| 160 | |
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| 161 | int |
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| 162 | _wait (statusp) |
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| 163 | int *statusp; |
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| 164 | { |
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| 165 | return __trap34 (SYS_wait); |
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| 166 | } |
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| 167 | |
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| 168 | int |
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| 169 | _execve (const char *path, char *const argv[], char *const envp[]) |
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| 170 | { |
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| 171 | return __trap34 (SYS_execve, path, argv, envp); |
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| 172 | } |
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| 173 | |
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| 174 | int |
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| 175 | _execv (const char *path, char *const argv[]) |
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| 176 | { |
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| 177 | return __trap34 (SYS_execv, path, argv); |
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| 178 | } |
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| 179 | |
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| 180 | int |
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| 181 | _pipe (int *fd) |
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| 182 | { |
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| 183 | return __trap34 (SYS_pipe, fd); |
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| 184 | } |
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| 185 | |
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| 186 | /* This is only provided because _gettimeofday_r and _times_r are |
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| 187 | defined in the same module, so we avoid a link error. */ |
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| 188 | clock_t |
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| 189 | _times (struct tms *tp) |
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| 190 | { |
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| 191 | return -1; |
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| 192 | } |
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| 193 | |
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| 194 | int |
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| 195 | _gettimeofday (struct timeval *tv, void *tz) |
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| 196 | { |
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| 197 | tv->tv_usec = 0; |
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| 198 | tv->tv_sec = __trap34 (SYS_time); |
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| 199 | return 0; |
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| 200 | } |
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| 201 | |
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| 202 | static inline int |
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| 203 | __setup_argv_for_main (int argc) |
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| 204 | { |
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| 205 | char **argv; |
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| 206 | int i = argc; |
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| 207 | |
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| 208 | argv = __builtin_alloca ((1 + argc) * sizeof (*argv)); |
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| 209 | |
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| 210 | argv[i] = NULL; |
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| 211 | while (i--) { |
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| 212 | argv[i] = __builtin_alloca (1 + __trap34 (SYS_argnlen, i)); |
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| 213 | __trap34 (SYS_argn, i, argv[i]); |
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| 214 | } |
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| 215 | |
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| 216 | return main (argc, argv); |
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| 217 | } |
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| 218 | |
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| 219 | int |
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| 220 | __setup_argv_and_call_main () |
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| 221 | { |
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| 222 | int argc = __trap34 (SYS_argc); |
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| 223 | |
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| 224 | if (argc <= 0) |
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| 225 | return main (argc, NULL); |
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| 226 | else |
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| 227 | return __setup_argv_for_main (argc); |
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| 228 | } |
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