/* C code startup routine.
Copyright (C) 1985, 1986, 1992, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* The standard Vax 4.2 Unix crt0.c cannot be used for Emacs
[next arg string]... 0 or more times
*/
-/* On the 16000, at least in the one 4.2 system I know about,
- the initial data format is
- sp -> word containing argc
- word containing argp
- word pointing to first arg string, and so on as above
-*/
-
#ifdef emacs
#include <config.h>
#endif
int errno;
#endif
-#ifndef DONT_NEED_ENVIRON
+#ifndef MSDOS
char **environ;
#endif
static start1 ();
#endif
-#ifdef APOLLO
-extern char *malloc(), *realloc(), *(*_libc_malloc) (), *(*_libc_realloc)();
-extern void free(), (*_libc_free) (); extern int main();
-std_$call void unix_$main();
-
-_start()
-{
- _libc_malloc = malloc;
- _libc_realloc = realloc;
- _libc_free = free;
- unix_$main(main); /* no return */
-}
-#endif /* APOLLO */
-
-#if defined(orion) || defined(pyramid) || defined(celerity) || defined(ALLIANT) || defined(clipper) || defined(sps7)
-
-#if defined(sps7) && defined(V3x)
- asm(" section 10");
- asm(" ds.b 0xb0");
-#endif
-
-#ifdef ALLIANT
-/* _start must initialize _curbrk and _minbrk on the first startup;
- when starting up after dumping, it must initialize them to what they were
- before the dumping, since they are in the shared library and
- are not dumped. See ADJUST_EXEC_HEADER in m-alliant.h. */
-extern unsigned char *_curbrk, *_minbrk;
-extern unsigned char end;
-unsigned char *_setbrk = &end;
-#ifdef ALLIANT_2800
-unsigned char *_end = &end;
-#endif
-#endif
-
-#ifndef DUMMIES
-#define DUMMIES
-#endif
-
-_start (DUMMIES argc, argv, envp)
- int argc;
- char **argv, **envp;
-{
-#ifdef ALLIANT
-#ifdef ALLIANT_2800
- _curbrk = _end;
- _minbrk = _end;
-#else
- _curbrk = _setbrk;
- _minbrk = _setbrk;
-#endif
-#endif
-
- environ = envp;
-
- exit (main (argc, argv, envp));
-}
-
-#endif /* orion or pyramid or celerity or alliant or clipper */
-
-#if defined (ns16000) && !defined (sequent) && !defined (UMAX) && !defined (CRT0_DUMMIES)
-
-_start ()
-{
-/* On 16000, _start pushes fp onto stack */
- start1 ();
-}
-
-/* ignore takes care of skipping the fp value pushed in start. */
-static
-start1 (ignore, argc, argv)
- int ignore;
- int argc;
- register char **argv;
-{
- environ = argv + argc + 1;
-
- if (environ == *argv)
- environ--;
- exit (main (argc, argv, environ));
-}
-#endif /* ns16000, not sequent and not UMAX, and not the CRT0_DUMMIES method */
-
-#ifdef UMAX
-_start()
-{
- asm(" exit [] # undo enter");
- asm(" .set exitsc,1");
- asm(" .set sigcatchall,0x400");
-
- asm(" .globl _exit");
- asm(" .globl start");
- asm(" .globl __start");
- asm(" .globl _main");
- asm(" .globl _environ");
- asm(" .globl _sigvec");
- asm(" .globl sigentry");
-
- asm("start:");
- asm(" br .xstart");
- asm(" .org 0x20");
- asm(" .double p_glbl,0,0xf00000,0");
- asm(" .org 0x30");
- asm(".xstart:");
- asm(" adjspb $8");
- asm(" movd 8(sp),0(sp) # argc");
- asm(" addr 12(sp),r0");
- asm(" movd r0,4(sp) # argv");
- asm("L1:");
- asm(" movd r0,r1");
- asm(" addqd $4,r0");
- asm(" cmpqd $0,0(r1) # null args term ?");
- asm(" bne L1");
- asm(" cmpd r0,0(4(sp)) # end of 'env' or 'argv' ?");
- asm(" blt L2");
- asm(" addqd $-4,r0 # envp's are in list");
- asm("L2:");
- asm(" movd r0,8(sp) # env");
- asm(" movd r0,@_environ # indir is 0 if no env ; not 0 if env");
- asm(" movqd $0,tos # setup intermediate signal handler");
- asm(" addr @sv,tos");
- asm(" movzwd $sigcatchall,tos");
- asm(" jsr @_sigvec");
- asm(" adjspb $-12");
- asm(" jsr @_main");
- asm(" adjspb $-12");
- asm(" movd r0,tos");
- asm(" jsr @_exit");
- asm(" adjspb $-4");
- asm(" addr @exitsc,r0");
- asm(" svc");
- asm(" .align 4 # sigvec arg");
- asm("sv:");
- asm(" .double sigentry");
- asm(" .double 0");
- asm(" .double 0");
-
- asm(" .comm p_glbl,1");
-}
-#endif /* UMAX */
-
#ifdef CRT0_DUMMIES
/* Define symbol "start": here; some systems want that symbol. */
-#ifdef DOT_GLOBAL_START
asm(" .text ");
asm(" .globl start ");
asm(" start: ");
-#endif /* DOT_GLOBAL_START */
-
-#ifdef NODOT_GLOBAL_START
-asm(" text ");
-asm(" global start ");
-asm(" start: ");
-#endif /* NODOT_GLOBAL_START */
-
-#ifdef m68000
-
-/* GCC 2.1, when optimization is turned off, seems to want to push a
- word of garbage on the stack, which screws up the CRT0_DUMMIES
- hack. So we hand-code _start in assembly language. */
-asm(".text ");
-asm(" .even ");
-asm(".globl __start ");
-asm("__start: ");
-asm(" link a6,#0 ");
-asm(" jbsr _start1 ");
-asm(" unlk a6 ");
-asm(" rts ");
-
-#else /* not m68000 */
_start ()
{
/* On vax, nothing is pushed here */
-/* On sequent, bogus fp is pushed here */
start1 ();
}
-#endif /* possibly m68000 */
-
static
start1 (CRT0_DUMMIES argc, xargv)
int argc;
}
#else /* not CRT0_DUMMIES */
-/* "m68k" and "m68000" both stand for m68000 processors,
- but with different program-entry conventions.
- This is a kludge. Now that the CRT0_DUMMIES mechanism above exists,
+/* This is a kludge. Now that the CRT0_DUMMIES mechanism above exists,
most of these machines could use the vax code above
with some suitable definition of CRT0_DUMMIES.
Then the symbol m68k could be flushed.
asm (" global _start");
asm (" text");
asm ("_start:");
-#ifndef NU
-#ifdef STRIDE
- asm (" comm havefpu%,2");
-#else /* m68k, not STRIDE */
asm (" comm splimit%,4");
-#endif /* STRIDE */
asm (" global exit");
asm (" text");
-#ifdef STRIDE
- asm (" trap &3");
- asm (" mov.w %d0,havefpu%");
-#else /* m68k, not STRIDE */
asm (" mov.l %d0,splimit%");
-#endif /* STRIDE */
-#endif /* not NU */
asm (" jsr start1");
asm (" mov.l %d0,(%sp)");
asm (" jsr exit");
asm (" mov.l &1,%d0"); /* d0 = 1 => exit */
asm (" trap &0");
-#else /* m68000, not m68k */
-
-#ifdef m68000
-
-#ifdef ISI68K
-/* Added by ESM Sun May 24 12:44:02 1987 to get new ISI library to work */
-/* Edited by Ray Mon May 15 15:59:56 EST 1989 so we can compile with gcc */
-#if defined(BSD4_3) && !defined(__GNUC__)
-static foo () {
-#endif
- asm (" .globl is68020");
- asm ("is68020:");
-#ifndef BSD4_3
- asm (" .long 0x00000000");
- asm (" .long 0xffffffff");
-/* End of stuff added by ESM */
-#endif
- asm (" .text");
- asm (" .globl __start");
- asm ("__start:");
- asm (" .word 0");
- asm (" link a6,#0");
- asm (" jbsr _start1");
- asm (" unlk a6");
- asm (" rts");
-#if defined(BSD4_3) && !defined(__GNUC__)
- }
-#endif
-#else /* not ISI68K */
-_start ()
-{
-#ifdef sun
- finitfp_();
-#endif
-/* On 68000, _start pushes a6 onto stack */
- start1 ();
-}
-#endif /* not ISI68k */
-#endif /* m68000 */
-#endif /* m68k */
-
-#if defined(m68k) || defined(m68000)
/* ignore takes care of skipping the a6 value pushed in start. */
static
-#if defined(m68k)
start1 (argc, xargv)
-#else
-start1 (ignore, argc, xargv)
-#endif
int argc;
char *xargv;
{
if ((char *)environ == xargv)
environ--;
-#ifdef sun_68881
- asm(" jsr f68881_used");
-#endif
-#ifdef sun_fpa
- asm(" jsr ffpa_used");
-#endif
-#ifdef sun_soft
- asm(" jsr start_float");
-#endif
exit (main (argc, argv, environ));
}
-#endif /* m68k or m68000 */
+#endif /* m68k */
#endif /* not CRT0_DUMMIES */
-#ifdef hp9000s300
-int argc_value;
-char **argv_value;
-#ifdef OLD_HP_ASSEMBLER
- asm(" text");
- asm(" globl __start");
- asm(" globl _exit");
- asm(" globl _main");
- asm("__start");
- asm(" dc.l 0");
- asm(" subq.w #0x1,d0");
- asm(" move.w d0,float_soft");
- asm(" move.l 0x4(a7),d0");
- asm(" beq.s skip_1");
- asm(" move.l d0,a0");
- asm(" clr.l -0x4(a0)");
- asm("skip_1");
- asm(" move.l a7,a0");
- asm(" subq.l #0x8,a7");
- asm(" move.l (a0),(a7)");
- asm(" move.l (a0),_argc_value");
- asm(" addq.l #0x4,a0");
- asm(" move.l a0,0x4(a7)");
- asm(" move.l a0,_argv_value");
- asm("incr_loop");
- asm(" tst.l (a0)+");
- asm(" bne.s incr_loop");
- asm(" move.l 0x4(a7),a1");
- asm(" cmp.l (a1),a0");
- asm(" blt.s skip_2");
- asm(" subq.l #0x4,a0");
- asm("skip_2");
- asm(" move.l a0,0x8(a7)");
- asm(" move.l a0,_environ");
- asm(" jsr _main");
- asm(" addq.l #0x8,a7");
- asm(" move.l d0,-(a7)");
- asm(" jsr _exit");
- asm(" move.w #0x1,d0");
- asm(" trap #0x0");
- asm(" comm float_soft,4");
-/* float_soft is allocated in this way because C would
- put an underscore character in its name otherwise. */
-
-#else /* new hp assembler */
-
- asm(" text");
- asm(" global float_loc");
- asm(" set float_loc,0xFFFFB000");
- asm(" global fpa_loc");
- asm(" set fpa_loc,0xfff08000");
- asm(" global __start");
- asm(" global _exit");
- asm(" global _main");
- asm("__start:");
- asm(" byte 0,0,0,0");
- asm(" subq.w &1,%d0");
- asm(" mov.w %d0,float_soft");
- asm(" mov.w %d1,flag_68881");
-#ifndef HPUX_68010
- asm(" beq.b skip_float");
- asm(" fmov.l &0x7400,%fpcr");
-/* asm(" fmov.l &0x7480,%fpcr"); */
-#endif /* HPUX_68010 */
- asm("skip_float:");
- asm(" mov.l %a0,%d0");
- asm(" add.l %d0,%d0");
- asm(" subx.w %d1,%d1");
- asm(" mov.w %d1,flag_68010");
- asm(" add.l %d0,%d0");
- asm(" subx.w %d1,%d1");
- asm(" mov.w %d1,flag_fpa");
- asm(" tst.l %d2");
- asm(" ble.b skip_3");
- asm(" lsl flag_68881");
- asm(" lsl flag_fpa");
- asm("skip_3:");
- asm(" mov.l 4(%a7),%d0");
- asm(" beq.b skip_1");
- asm(" mov.l %d0,%a0");
- asm(" clr.l -4(%a0)");
- asm("skip_1:");
- asm(" mov.l %a7,%a0");
- asm(" subq.l &8,%a7");
- asm(" mov.l (%a0),(%a7)");
- asm(" mov.l (%a0),_argc_value");
- asm(" addq.l &4,%a0");
- asm(" mov.l %a0,4(%a7)");
- asm(" mov.l %a0,_argv_value");
- asm("incr_loop:");
- asm(" tst.l (%a0)+");
- asm(" bne.b incr_loop");
- asm(" mov.l 4(%a7),%a1");
- asm(" cmp.l %a0,(%a1)");
- asm(" blt.b skip_2");
- asm(" subq.l &4,%a0");
- asm("skip_2:");
- asm(" mov.l %a0,8(%a7)");
- asm(" mov.l %a0,_environ");
- asm(" jsr _main");
- asm(" addq.l &8,%a7");
- asm(" mov.l %d0,-(%a7)");
- asm(" jsr _exit");
- asm(" mov.w &1,%d0");
- asm(" trap &0");
- asm(" comm float_soft, 4");
- asm(" comm flag_68881, 4");
- asm(" comm flag_68010, 4");
- asm(" comm flag_68040, 4");
- asm(" comm flag_fpa, 4");
-
-#endif /* new hp assembler */
-#endif /* hp9000s300 */
-
-#ifdef GOULD
-
-/* startup code has to be in near text rather
- than fartext as allocated by the C compiler. */
- asm(" .text");
- asm(" .align 2");
- asm(" .globl __start");
- asm(" .text");
- asm("__start:");
-/* setup base register b1 (function base). */
- asm(" .using b1,.");
- asm(" tpcbr b1");
-/* setup base registers b3 through b7 (data references). */
- asm(" file basevals,b3");
-/* setup base register b2 (stack pointer); it should be
- aligned on a 8-word boundary; but because it is pointing
- to argc, its value should be remembered (in r5). */
- asm(" movw b2,r4");
- asm(" movw b2,r5");
- asm(" andw #~0x1f,r4");
- asm(" movw r4,b2");
-/* allocate stack frame to do some work. */
- asm(" subea 16w,b2");
-/* initialize signal catching for UTX/32 1.2; this is
- necessary to make restart from saved image work. */
- asm(" movea sigcatch,r1");
- asm(" movw r1,8w[b2]");
- asm(" svc #1,#150");
-/* setup address of argc for start1. */
- asm(" movw r5,8w[b2]");
- asm(" func #1,_start1");
- asm(" halt");
-/* space for ld to store base register initial values. */
- asm(" .align 5");
- asm("basevals:");
- asm(" .word __base3,__base4,__base5,__base6,__base7");
-
-static
-start1 (xargc)
- int *xargc;
-{
- register int argc;
- register char **argv;
-
- argc = *xargc;
- argv = (char **)(xargc) + 1;
- environ = argv + argc + 1;
-
- if (environ == argv)
- environ--;
- exit (main (argc, argv, environ));
-
-}
-
-#endif /* GOULD */
-
-#ifdef elxsi
-#include <elxsi/argvcache.h>
-
-extern char **environ;
-extern int errno;
-extern void _init_doscan(), _init_iob();
-extern char end[];
-char *_init_brk = end;
-
-_start()
-{
- environ = exec_cache.ac_envp;
- brk (_init_brk);
- errno = 0;
- _init_doscan ();
- _init_iob ();
- _exit (exit (main (exec_cache.ac_argc,
- exec_cache.ac_argv,
- exec_cache.ac_envp)));
-}
-#endif /* elxsi */
-
-
-#ifdef sparc
+#ifdef __sparc__
asm (".global __start");
asm (".text");
asm ("__start:");
asm (" call __exit");
asm (" nop");
-#endif /* sparc */
+#endif /* __sparc__ */
#if __FreeBSD__ == 2
char *__progname;
#endif
-#ifdef __bsdi__
-#include <sys/param.h> /* for version number */
-#if defined(_BSDI_VERSION) && (_BSDI_VERSION >= 199501)
-char *__progname;
-#endif
-#endif /* __bsdi__ */
/* arch-tag: 4025c2fb-d6b1-4d29-b1b6-8100b6bd1e74
(do not change this comment) */