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128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/* VMS crt0 returning Unix style condition codes.
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Copyright (C) 2001, 2009, 2010 Free Software Foundation, Inc.
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Contributed by Douglas B. Rupp (rupp@gnat.com).
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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/* Lots of cheat to handle 32bits/64bits pointer conversions.
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We use 'long long' for 64 bits pointers and 'int' for 32 bits pointers. */
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extern void decc$main (void *arg1, void *arg2, void *arg3,
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void *image_file_desc, void *arg5, void *arg6,
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int *, int *, int *);
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extern int main (int, char **, char **);
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extern int _malloc32 (int);
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#ifdef __ia64__
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#define MAIN_ASM_NAME asm ("ELF$TFRADR")
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#else
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#define MAIN_ASM_NAME
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#endif
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int __main (void *arg1, void *arg2, void *arg3,
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void *image_file_desc, void *arg5, void *arg6) MAIN_ASM_NAME;
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/* From errnodef.h, but we need to emulate the globalval. */
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extern int C$_EXIT1;
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/* From stsdef.h */
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#define STS$V_MSG_NO 0x03
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#define STS$M_INHIB_MSG 0x10000000
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/* From ssdef.h */
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#define SS$_NORMAL 1
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int
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__main (void *arg1, void *arg2, void *arg3,
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void *image_file_desc, void *arg5, void *arg6)
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{
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int argc;
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int argv;
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int envp;
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int status;
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int i;
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long long *long_argv;
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long long *long_envp;
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/* The argv and envp arrays are 32 bits pointers to 32 bits pointers. */
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decc$main (arg1, arg2, arg3, image_file_desc,
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arg5, arg6, &argc, &argv, &envp);
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if (sizeof (void *) == 8)
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{
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/* Reallocate argv and envp with 64 bit pointers. */
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long_argv = (long long *)
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(long long) _malloc32 (sizeof (long long) * (argc + 1));
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for (i = 0; i < argc; i++)
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long_argv[i] = ((int *) (long long) argv)[i];
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long_argv[argc] = 0;
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for (i = 0; ((int *) (long long) envp)[i]; i++)
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;
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long_envp = (long long *)
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(long long) _malloc32 (sizeof (long long) * (i + 1));
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for (i = 0; ((int *) (long long) envp)[i]; i++)
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long_envp[i] = ((int *) (long long) envp)[i];
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long_envp[i] = 0;
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}
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else
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{
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long_argv = (long long *) argv;
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long_envp = (long long *) envp;
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}
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status = main (argc, (char **)long_argv, (char **)long_envp);
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#ifdef CRT0_POSIX_EXIT
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/* Map into a range of 0 - 255. */
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status = status & 255;
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if (status > 0)
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{
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int save_status = status;
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status = (long) &C$_EXIT1 + ((status - 1) << STS$V_MSG_NO);
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/* An exit failure status requires a "severe" error. All status values
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are defined in errno with a successful (1) severity but can be
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changed to an error (2) severity by adding 1. In addition for
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compatibility with UNIX exit() routines we inhibit a run-time error
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message from being generated on exit(1). */
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if (save_status == 1)
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{
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status++;
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status |= STS$M_INHIB_MSG;
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}
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}
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else
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status = SS$_NORMAL;
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#endif /* CRT0_POSIX_EXIT */
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return status;
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}
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