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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