| 1 | /* C code startup routine. |
| 2 | Copyright (C) 1985, 1986, 1992, 2002, 2003, 2004, |
| 3 | 2005, 2006 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | |
| 23 | /* The standard Vax 4.2 Unix crt0.c cannot be used for Emacs |
| 24 | because it makes `environ' an initialized variable. |
| 25 | It is easiest to have a special crt0.c on all machines |
| 26 | though I don't know whether other machines actually need it. */ |
| 27 | |
| 28 | /* On the vax and 68000, in BSD4.2 and USG5.2, |
| 29 | this is the data format on startup: |
| 30 | (vax) ap and fp are unpredictable as far as I know; don't use them. |
| 31 | sp -> word containing argc |
| 32 | word pointing to first arg string |
| 33 | [word pointing to next arg string]... 0 or more times |
| 34 | 0 |
| 35 | Optionally: |
| 36 | [word pointing to environment variable]... 1 or more times |
| 37 | ... |
| 38 | 0 |
| 39 | And always: |
| 40 | first arg string |
| 41 | [next arg string]... 0 or more times |
| 42 | */ |
| 43 | |
| 44 | /* On the 16000, at least in the one 4.2 system I know about, |
| 45 | the initial data format is |
| 46 | sp -> word containing argc |
| 47 | word containing argp |
| 48 | word pointing to first arg string, and so on as above |
| 49 | */ |
| 50 | |
| 51 | #ifdef emacs |
| 52 | #include <config.h> |
| 53 | #endif |
| 54 | |
| 55 | /* ******** WARNING ******** |
| 56 | Do not insert any data definitions before data_start! |
| 57 | Since this is the first file linked, the address of the following |
| 58 | variable should correspond to the start of initialized data space. |
| 59 | On some systems this is a constant that is independent of the text |
| 60 | size for shared executables. On others, it is a function of the |
| 61 | text size. In short, this seems to be the most portable way to |
| 62 | discover the start of initialized data space dynamically at runtime, |
| 63 | for either shared or unshared executables, on either swapping or |
| 64 | virtual systems. It only requires that the linker allocate objects |
| 65 | in the order encountered, a reasonable model for most Unix systems. |
| 66 | Similarly, note that the address of _start() should be the start |
| 67 | of text space. Fred Fish, UniSoft Systems Inc. */ |
| 68 | |
| 69 | int data_start = 0; |
| 70 | |
| 71 | #ifdef NEED_ERRNO |
| 72 | int errno; |
| 73 | #endif |
| 74 | |
| 75 | #ifndef DONT_NEED_ENVIRON |
| 76 | char **environ; |
| 77 | #endif |
| 78 | |
| 79 | #ifndef static |
| 80 | /* On systems where the static storage class is usable, this function |
| 81 | should be declared as static. Otherwise, the static keyword has |
| 82 | been defined to be something else, and code for those systems must |
| 83 | take care of this declaration appropriately. */ |
| 84 | static start1 (); |
| 85 | #endif |
| 86 | |
| 87 | #ifdef APOLLO |
| 88 | extern char *malloc(), *realloc(), *(*_libc_malloc) (), *(*_libc_realloc)(); |
| 89 | extern void free(), (*_libc_free) (); extern int main(); |
| 90 | std_$call void unix_$main(); |
| 91 | |
| 92 | _start() |
| 93 | { |
| 94 | _libc_malloc = malloc; |
| 95 | _libc_realloc = realloc; |
| 96 | _libc_free = free; |
| 97 | unix_$main(main); /* no return */ |
| 98 | } |
| 99 | #endif /* APOLLO */ |
| 100 | |
| 101 | #if defined(orion) || defined(pyramid) || defined(celerity) || defined(ALLIANT) || defined(clipper) || defined(sps7) |
| 102 | |
| 103 | #if defined(sps7) && defined(V3x) |
| 104 | asm(" section 10"); |
| 105 | asm(" ds.b 0xb0"); |
| 106 | #endif |
| 107 | |
| 108 | #ifdef ALLIANT |
| 109 | /* _start must initialize _curbrk and _minbrk on the first startup; |
| 110 | when starting up after dumping, it must initialize them to what they were |
| 111 | before the dumping, since they are in the shared library and |
| 112 | are not dumped. See ADJUST_EXEC_HEADER in m-alliant.h. */ |
| 113 | extern unsigned char *_curbrk, *_minbrk; |
| 114 | extern unsigned char end; |
| 115 | unsigned char *_setbrk = &end; |
| 116 | #ifdef ALLIANT_2800 |
| 117 | unsigned char *_end = &end; |
| 118 | #endif |
| 119 | #endif |
| 120 | |
| 121 | #ifndef DUMMIES |
| 122 | #define DUMMIES |
| 123 | #endif |
| 124 | |
| 125 | _start (DUMMIES argc, argv, envp) |
| 126 | int argc; |
| 127 | char **argv, **envp; |
| 128 | { |
| 129 | #ifdef ALLIANT |
| 130 | #ifdef ALLIANT_2800 |
| 131 | _curbrk = _end; |
| 132 | _minbrk = _end; |
| 133 | #else |
| 134 | _curbrk = _setbrk; |
| 135 | _minbrk = _setbrk; |
| 136 | #endif |
| 137 | #endif |
| 138 | |
| 139 | environ = envp; |
| 140 | |
| 141 | exit (main (argc, argv, envp)); |
| 142 | } |
| 143 | |
| 144 | #endif /* orion or pyramid or celerity or alliant or clipper */ |
| 145 | |
| 146 | #if defined (ns16000) && !defined (sequent) && !defined (UMAX) && !defined (CRT0_DUMMIES) |
| 147 | |
| 148 | _start () |
| 149 | { |
| 150 | /* On 16000, _start pushes fp onto stack */ |
| 151 | start1 (); |
| 152 | } |
| 153 | |
| 154 | /* ignore takes care of skipping the fp value pushed in start. */ |
| 155 | static |
| 156 | start1 (ignore, argc, argv) |
| 157 | int ignore; |
| 158 | int argc; |
| 159 | register char **argv; |
| 160 | { |
| 161 | environ = argv + argc + 1; |
| 162 | |
| 163 | if (environ == *argv) |
| 164 | environ--; |
| 165 | exit (main (argc, argv, environ)); |
| 166 | } |
| 167 | #endif /* ns16000, not sequent and not UMAX, and not the CRT0_DUMMIES method */ |
| 168 | |
| 169 | #ifdef UMAX |
| 170 | _start() |
| 171 | { |
| 172 | asm(" exit [] # undo enter"); |
| 173 | asm(" .set exitsc,1"); |
| 174 | asm(" .set sigcatchall,0x400"); |
| 175 | |
| 176 | asm(" .globl _exit"); |
| 177 | asm(" .globl start"); |
| 178 | asm(" .globl __start"); |
| 179 | asm(" .globl _main"); |
| 180 | asm(" .globl _environ"); |
| 181 | asm(" .globl _sigvec"); |
| 182 | asm(" .globl sigentry"); |
| 183 | |
| 184 | asm("start:"); |
| 185 | asm(" br .xstart"); |
| 186 | asm(" .org 0x20"); |
| 187 | asm(" .double p_glbl,0,0xf00000,0"); |
| 188 | asm(" .org 0x30"); |
| 189 | asm(".xstart:"); |
| 190 | asm(" adjspb $8"); |
| 191 | asm(" movd 8(sp),0(sp) # argc"); |
| 192 | asm(" addr 12(sp),r0"); |
| 193 | asm(" movd r0,4(sp) # argv"); |
| 194 | asm("L1:"); |
| 195 | asm(" movd r0,r1"); |
| 196 | asm(" addqd $4,r0"); |
| 197 | asm(" cmpqd $0,0(r1) # null args term ?"); |
| 198 | asm(" bne L1"); |
| 199 | asm(" cmpd r0,0(4(sp)) # end of 'env' or 'argv' ?"); |
| 200 | asm(" blt L2"); |
| 201 | asm(" addqd $-4,r0 # envp's are in list"); |
| 202 | asm("L2:"); |
| 203 | asm(" movd r0,8(sp) # env"); |
| 204 | asm(" movd r0,@_environ # indir is 0 if no env ; not 0 if env"); |
| 205 | asm(" movqd $0,tos # setup intermediate signal handler"); |
| 206 | asm(" addr @sv,tos"); |
| 207 | asm(" movzwd $sigcatchall,tos"); |
| 208 | asm(" jsr @_sigvec"); |
| 209 | asm(" adjspb $-12"); |
| 210 | asm(" jsr @_main"); |
| 211 | asm(" adjspb $-12"); |
| 212 | asm(" movd r0,tos"); |
| 213 | asm(" jsr @_exit"); |
| 214 | asm(" adjspb $-4"); |
| 215 | asm(" addr @exitsc,r0"); |
| 216 | asm(" svc"); |
| 217 | asm(" .align 4 # sigvec arg"); |
| 218 | asm("sv:"); |
| 219 | asm(" .double sigentry"); |
| 220 | asm(" .double 0"); |
| 221 | asm(" .double 0"); |
| 222 | |
| 223 | asm(" .comm p_glbl,1"); |
| 224 | } |
| 225 | #endif /* UMAX */ |
| 226 | |
| 227 | #ifdef CRT0_DUMMIES |
| 228 | |
| 229 | /* Define symbol "start": here; some systems want that symbol. */ |
| 230 | #ifdef DOT_GLOBAL_START |
| 231 | asm(" .text "); |
| 232 | asm(" .globl start "); |
| 233 | asm(" start: "); |
| 234 | #endif /* DOT_GLOBAL_START */ |
| 235 | |
| 236 | #ifdef NODOT_GLOBAL_START |
| 237 | asm(" text "); |
| 238 | asm(" global start "); |
| 239 | asm(" start: "); |
| 240 | #endif /* NODOT_GLOBAL_START */ |
| 241 | |
| 242 | #ifdef m68000 |
| 243 | |
| 244 | /* GCC 2.1, when optimization is turned off, seems to want to push a |
| 245 | word of garbage on the stack, which screws up the CRT0_DUMMIES |
| 246 | hack. So we hand-code _start in assembly language. */ |
| 247 | asm(".text "); |
| 248 | asm(" .even "); |
| 249 | asm(".globl __start "); |
| 250 | asm("__start: "); |
| 251 | asm(" link a6,#0 "); |
| 252 | asm(" jbsr _start1 "); |
| 253 | asm(" unlk a6 "); |
| 254 | asm(" rts "); |
| 255 | |
| 256 | #else /* not m68000 */ |
| 257 | |
| 258 | _start () |
| 259 | { |
| 260 | /* On vax, nothing is pushed here */ |
| 261 | /* On sequent, bogus fp is pushed here */ |
| 262 | start1 (); |
| 263 | } |
| 264 | |
| 265 | #endif /* possibly m68000 */ |
| 266 | |
| 267 | static |
| 268 | start1 (CRT0_DUMMIES argc, xargv) |
| 269 | int argc; |
| 270 | char *xargv; |
| 271 | { |
| 272 | register char **argv = &xargv; |
| 273 | environ = argv + argc + 1; |
| 274 | |
| 275 | if ((char *)environ == xargv) |
| 276 | environ--; |
| 277 | exit (main (argc, argv, environ)); |
| 278 | |
| 279 | /* Refer to `start1' so GCC will not think it is never called |
| 280 | and optimize it out. */ |
| 281 | (void) &start1; |
| 282 | } |
| 283 | #else /* not CRT0_DUMMIES */ |
| 284 | |
| 285 | /* "m68k" and "m68000" both stand for m68000 processors, |
| 286 | but with different program-entry conventions. |
| 287 | This is a kludge. Now that the CRT0_DUMMIES mechanism above exists, |
| 288 | most of these machines could use the vax code above |
| 289 | with some suitable definition of CRT0_DUMMIES. |
| 290 | Then the symbol m68k could be flushed. |
| 291 | But I don't want to risk breaking these machines |
| 292 | in a version 17 patch release, so that change is being put off. */ |
| 293 | |
| 294 | #ifdef m68k /* Can't do it all from C */ |
| 295 | asm (" global _start"); |
| 296 | asm (" text"); |
| 297 | asm ("_start:"); |
| 298 | #ifndef NU |
| 299 | #ifdef STRIDE |
| 300 | asm (" comm havefpu%,2"); |
| 301 | #else /* m68k, not STRIDE */ |
| 302 | asm (" comm splimit%,4"); |
| 303 | #endif /* STRIDE */ |
| 304 | asm (" global exit"); |
| 305 | asm (" text"); |
| 306 | #ifdef STRIDE |
| 307 | asm (" trap &3"); |
| 308 | asm (" mov.w %d0,havefpu%"); |
| 309 | #else /* m68k, not STRIDE */ |
| 310 | asm (" mov.l %d0,splimit%"); |
| 311 | #endif /* STRIDE */ |
| 312 | #endif /* not NU */ |
| 313 | asm (" jsr start1"); |
| 314 | asm (" mov.l %d0,(%sp)"); |
| 315 | asm (" jsr exit"); |
| 316 | asm (" mov.l &1,%d0"); /* d0 = 1 => exit */ |
| 317 | asm (" trap &0"); |
| 318 | #else /* m68000, not m68k */ |
| 319 | |
| 320 | #ifdef m68000 |
| 321 | |
| 322 | #ifdef ISI68K |
| 323 | /* Added by ESM Sun May 24 12:44:02 1987 to get new ISI library to work */ |
| 324 | /* Edited by Ray Mon May 15 15:59:56 EST 1989 so we can compile with gcc */ |
| 325 | #if defined(BSD4_3) && !defined(__GNUC__) |
| 326 | static foo () { |
| 327 | #endif |
| 328 | asm (" .globl is68020"); |
| 329 | asm ("is68020:"); |
| 330 | #ifndef BSD4_3 |
| 331 | asm (" .long 0x00000000"); |
| 332 | asm (" .long 0xffffffff"); |
| 333 | /* End of stuff added by ESM */ |
| 334 | #endif |
| 335 | asm (" .text"); |
| 336 | asm (" .globl __start"); |
| 337 | asm ("__start:"); |
| 338 | asm (" .word 0"); |
| 339 | asm (" link a6,#0"); |
| 340 | asm (" jbsr _start1"); |
| 341 | asm (" unlk a6"); |
| 342 | asm (" rts"); |
| 343 | #if defined(BSD4_3) && !defined(__GNUC__) |
| 344 | } |
| 345 | #endif |
| 346 | #else /* not ISI68K */ |
| 347 | |
| 348 | _start () |
| 349 | { |
| 350 | #ifdef sun |
| 351 | finitfp_(); |
| 352 | #endif |
| 353 | /* On 68000, _start pushes a6 onto stack */ |
| 354 | start1 (); |
| 355 | } |
| 356 | #endif /* not ISI68k */ |
| 357 | #endif /* m68000 */ |
| 358 | #endif /* m68k */ |
| 359 | |
| 360 | #if defined(m68k) || defined(m68000) |
| 361 | /* ignore takes care of skipping the a6 value pushed in start. */ |
| 362 | static |
| 363 | #if defined(m68k) |
| 364 | start1 (argc, xargv) |
| 365 | #else |
| 366 | start1 (ignore, argc, xargv) |
| 367 | #endif |
| 368 | int argc; |
| 369 | char *xargv; |
| 370 | { |
| 371 | register char **argv = &xargv; |
| 372 | environ = argv + argc + 1; |
| 373 | |
| 374 | if ((char *)environ == xargv) |
| 375 | environ--; |
| 376 | #ifdef sun_68881 |
| 377 | asm(" jsr f68881_used"); |
| 378 | #endif |
| 379 | #ifdef sun_fpa |
| 380 | asm(" jsr ffpa_used"); |
| 381 | #endif |
| 382 | #ifdef sun_soft |
| 383 | asm(" jsr start_float"); |
| 384 | #endif |
| 385 | exit (main (argc, argv, environ)); |
| 386 | } |
| 387 | |
| 388 | #endif /* m68k or m68000 */ |
| 389 | |
| 390 | #endif /* not CRT0_DUMMIES */ |
| 391 | |
| 392 | #ifdef hp9000s300 |
| 393 | int argc_value; |
| 394 | char **argv_value; |
| 395 | #ifdef OLD_HP_ASSEMBLER |
| 396 | asm(" text"); |
| 397 | asm(" globl __start"); |
| 398 | asm(" globl _exit"); |
| 399 | asm(" globl _main"); |
| 400 | asm("__start"); |
| 401 | asm(" dc.l 0"); |
| 402 | asm(" subq.w #0x1,d0"); |
| 403 | asm(" move.w d0,float_soft"); |
| 404 | asm(" move.l 0x4(a7),d0"); |
| 405 | asm(" beq.s skip_1"); |
| 406 | asm(" move.l d0,a0"); |
| 407 | asm(" clr.l -0x4(a0)"); |
| 408 | asm("skip_1"); |
| 409 | asm(" move.l a7,a0"); |
| 410 | asm(" subq.l #0x8,a7"); |
| 411 | asm(" move.l (a0),(a7)"); |
| 412 | asm(" move.l (a0),_argc_value"); |
| 413 | asm(" addq.l #0x4,a0"); |
| 414 | asm(" move.l a0,0x4(a7)"); |
| 415 | asm(" move.l a0,_argv_value"); |
| 416 | asm("incr_loop"); |
| 417 | asm(" tst.l (a0)+"); |
| 418 | asm(" bne.s incr_loop"); |
| 419 | asm(" move.l 0x4(a7),a1"); |
| 420 | asm(" cmp.l (a1),a0"); |
| 421 | asm(" blt.s skip_2"); |
| 422 | asm(" subq.l #0x4,a0"); |
| 423 | asm("skip_2"); |
| 424 | asm(" move.l a0,0x8(a7)"); |
| 425 | asm(" move.l a0,_environ"); |
| 426 | asm(" jsr _main"); |
| 427 | asm(" addq.l #0x8,a7"); |
| 428 | asm(" move.l d0,-(a7)"); |
| 429 | asm(" jsr _exit"); |
| 430 | asm(" move.w #0x1,d0"); |
| 431 | asm(" trap #0x0"); |
| 432 | asm(" comm float_soft,4"); |
| 433 | /* float_soft is allocated in this way because C would |
| 434 | put an underscore character in its name otherwise. */ |
| 435 | |
| 436 | #else /* new hp assembler */ |
| 437 | |
| 438 | asm(" text"); |
| 439 | asm(" global float_loc"); |
| 440 | asm(" set float_loc,0xFFFFB000"); |
| 441 | asm(" global fpa_loc"); |
| 442 | asm(" set fpa_loc,0xfff08000"); |
| 443 | asm(" global __start"); |
| 444 | asm(" global _exit"); |
| 445 | asm(" global _main"); |
| 446 | asm("__start:"); |
| 447 | asm(" byte 0,0,0,0"); |
| 448 | asm(" subq.w &1,%d0"); |
| 449 | asm(" mov.w %d0,float_soft"); |
| 450 | asm(" mov.w %d1,flag_68881"); |
| 451 | #ifndef HPUX_68010 |
| 452 | asm(" beq.b skip_float"); |
| 453 | asm(" fmov.l &0x7400,%fpcr"); |
| 454 | /* asm(" fmov.l &0x7480,%fpcr"); */ |
| 455 | #endif /* HPUX_68010 */ |
| 456 | asm("skip_float:"); |
| 457 | asm(" mov.l %a0,%d0"); |
| 458 | asm(" add.l %d0,%d0"); |
| 459 | asm(" subx.w %d1,%d1"); |
| 460 | asm(" mov.w %d1,flag_68010"); |
| 461 | asm(" add.l %d0,%d0"); |
| 462 | asm(" subx.w %d1,%d1"); |
| 463 | asm(" mov.w %d1,flag_fpa"); |
| 464 | asm(" tst.l %d2"); |
| 465 | asm(" ble.b skip_3"); |
| 466 | asm(" lsl flag_68881"); |
| 467 | asm(" lsl flag_fpa"); |
| 468 | asm("skip_3:"); |
| 469 | asm(" mov.l 4(%a7),%d0"); |
| 470 | asm(" beq.b skip_1"); |
| 471 | asm(" mov.l %d0,%a0"); |
| 472 | asm(" clr.l -4(%a0)"); |
| 473 | asm("skip_1:"); |
| 474 | asm(" mov.l %a7,%a0"); |
| 475 | asm(" subq.l &8,%a7"); |
| 476 | asm(" mov.l (%a0),(%a7)"); |
| 477 | asm(" mov.l (%a0),_argc_value"); |
| 478 | asm(" addq.l &4,%a0"); |
| 479 | asm(" mov.l %a0,4(%a7)"); |
| 480 | asm(" mov.l %a0,_argv_value"); |
| 481 | asm("incr_loop:"); |
| 482 | asm(" tst.l (%a0)+"); |
| 483 | asm(" bne.b incr_loop"); |
| 484 | asm(" mov.l 4(%a7),%a1"); |
| 485 | asm(" cmp.l %a0,(%a1)"); |
| 486 | asm(" blt.b skip_2"); |
| 487 | asm(" subq.l &4,%a0"); |
| 488 | asm("skip_2:"); |
| 489 | asm(" mov.l %a0,8(%a7)"); |
| 490 | asm(" mov.l %a0,_environ"); |
| 491 | asm(" jsr _main"); |
| 492 | asm(" addq.l &8,%a7"); |
| 493 | asm(" mov.l %d0,-(%a7)"); |
| 494 | asm(" jsr _exit"); |
| 495 | asm(" mov.w &1,%d0"); |
| 496 | asm(" trap &0"); |
| 497 | asm(" comm float_soft, 4"); |
| 498 | asm(" comm flag_68881, 4"); |
| 499 | asm(" comm flag_68010, 4"); |
| 500 | asm(" comm flag_68040, 4"); |
| 501 | asm(" comm flag_fpa, 4"); |
| 502 | |
| 503 | #endif /* new hp assembler */ |
| 504 | #endif /* hp9000s300 */ |
| 505 | |
| 506 | #ifdef GOULD |
| 507 | |
| 508 | /* startup code has to be in near text rather |
| 509 | than fartext as allocated by the C compiler. */ |
| 510 | asm(" .text"); |
| 511 | asm(" .align 2"); |
| 512 | asm(" .globl __start"); |
| 513 | asm(" .text"); |
| 514 | asm("__start:"); |
| 515 | /* setup base register b1 (function base). */ |
| 516 | asm(" .using b1,."); |
| 517 | asm(" tpcbr b1"); |
| 518 | /* setup base registers b3 through b7 (data references). */ |
| 519 | asm(" file basevals,b3"); |
| 520 | /* setup base register b2 (stack pointer); it should be |
| 521 | aligned on a 8-word boundary; but because it is pointing |
| 522 | to argc, its value should be remembered (in r5). */ |
| 523 | asm(" movw b2,r4"); |
| 524 | asm(" movw b2,r5"); |
| 525 | asm(" andw #~0x1f,r4"); |
| 526 | asm(" movw r4,b2"); |
| 527 | /* allocate stack frame to do some work. */ |
| 528 | asm(" subea 16w,b2"); |
| 529 | /* initialize signal catching for UTX/32 1.2; this is |
| 530 | necessary to make restart from saved image work. */ |
| 531 | asm(" movea sigcatch,r1"); |
| 532 | asm(" movw r1,8w[b2]"); |
| 533 | asm(" svc #1,#150"); |
| 534 | /* setup address of argc for start1. */ |
| 535 | asm(" movw r5,8w[b2]"); |
| 536 | asm(" func #1,_start1"); |
| 537 | asm(" halt"); |
| 538 | /* space for ld to store base register initial values. */ |
| 539 | asm(" .align 5"); |
| 540 | asm("basevals:"); |
| 541 | asm(" .word __base3,__base4,__base5,__base6,__base7"); |
| 542 | |
| 543 | static |
| 544 | start1 (xargc) |
| 545 | int *xargc; |
| 546 | { |
| 547 | register int argc; |
| 548 | register char **argv; |
| 549 | |
| 550 | argc = *xargc; |
| 551 | argv = (char **)(xargc) + 1; |
| 552 | environ = argv + argc + 1; |
| 553 | |
| 554 | if (environ == argv) |
| 555 | environ--; |
| 556 | exit (main (argc, argv, environ)); |
| 557 | |
| 558 | } |
| 559 | |
| 560 | #endif /* GOULD */ |
| 561 | |
| 562 | #ifdef elxsi |
| 563 | #include <elxsi/argvcache.h> |
| 564 | |
| 565 | extern char **environ; |
| 566 | extern int errno; |
| 567 | extern void _init_doscan(), _init_iob(); |
| 568 | extern char end[]; |
| 569 | char *_init_brk = end; |
| 570 | |
| 571 | _start() |
| 572 | { |
| 573 | environ = exec_cache.ac_envp; |
| 574 | brk (_init_brk); |
| 575 | errno = 0; |
| 576 | _init_doscan (); |
| 577 | _init_iob (); |
| 578 | _exit (exit (main (exec_cache.ac_argc, |
| 579 | exec_cache.ac_argv, |
| 580 | exec_cache.ac_envp))); |
| 581 | } |
| 582 | #endif /* elxsi */ |
| 583 | |
| 584 | |
| 585 | #ifdef sparc |
| 586 | asm (".global __start"); |
| 587 | asm (".text"); |
| 588 | asm ("__start:"); |
| 589 | asm (" mov 0, %fp"); |
| 590 | asm (" ld [%sp + 64], %o0"); |
| 591 | asm (" add %sp, 68, %o1"); |
| 592 | asm (" sll %o0, 2, %o2"); |
| 593 | asm (" add %o2, 4, %o2"); |
| 594 | asm (" add %o1, %o2, %o2"); |
| 595 | asm (" sethi %hi(_environ), %o3"); |
| 596 | asm (" st %o2, [%o3+%lo(_environ)]"); |
| 597 | asm (" andn %sp, 7, %sp"); |
| 598 | asm (" call _main"); |
| 599 | asm (" sub %sp, 24, %sp"); |
| 600 | asm (" call __exit"); |
| 601 | asm (" nop"); |
| 602 | |
| 603 | #endif /* sparc */ |
| 604 | |
| 605 | #if __FreeBSD__ == 2 |
| 606 | char *__progname; |
| 607 | #endif |
| 608 | #ifdef __bsdi__ |
| 609 | #include <sys/param.h> /* for version number */ |
| 610 | #if defined(_BSDI_VERSION) && (_BSDI_VERSION >= 199501) |
| 611 | char *__progname; |
| 612 | #endif |
| 613 | #endif /* __bsdi__ */ |
| 614 | |
| 615 | /* arch-tag: 4025c2fb-d6b1-4d29-b1b6-8100b6bd1e74 |
| 616 | (do not change this comment) */ |