blob: 4f2fef7190b4f039c863df4b68745d98fcce177d [file] [log] [blame]
/* VMS crt0 returning Unix style condition codes.
Copyright (C) 2001-2022 Free Software Foundation, Inc.
Contributed by Douglas B. Rupp (
This file is part of GCC.
GCC 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.
GCC 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<>. */
#include <stdlib.h>
/* Sanity check. */
#error "vms-ucrt0.c must be compiled with -mpointer-size=64"
/* Lots of cheat to handle 32bits/64bits pointer conversions.
We use 'long long' for 64 bits pointers and 'int' for 32 bits pointers. */
extern void decc$main (void *, void *, void *, void *, unsigned int,
unsigned int, int *, int *, int *);
extern int main (int, char **, char **);
extern int _malloc32 (int);
#ifdef __ia64__
#define MAIN_ASM_NAME asm ("ELF$TFRADR")
int __main (void *, void *, void *, void *,
unsigned int, unsigned int) MAIN_ASM_NAME;
/* From errnodef.h, but we need to emulate the globalval. */
extern int C$_EXIT1;
/* From stsdef.h */
#define STS$V_MSG_NO 0x03
#define STS$M_INHIB_MSG 0x10000000
/* Symbol defined while main() is compiled to record the flags used.
(Note that the symbol defines the value, ie extract the bits from the
bit 0 set for 64 bit pointers
bit 1 set for posix return value. */
extern char __gcc_main_flags;
/* From ssdef.h */
#define SS$_NORMAL 1
#define MAIN_FLAG_64BIT (1 << 0)
#define MAIN_FLAG_POSIX (1 << 1)
__main (void *progxfer, void *cli_util, void *imghdr, void *image_file_desc,
unsigned int linkflag, unsigned int cliflag)
int argc;
int argv;
int envp;
int status;
char **argv64;
char **envp64;
unsigned int flags = (unsigned __int64)&__gcc_main_flags;
/* The argv and envp arrays are 32 bits pointers to 32 bits pointers. */
decc$main (progxfer, cli_util, imghdr, image_file_desc,
linkflag, cliflag, &argc, &argv, &envp);
if (flags & MAIN_FLAG_64BIT)
int i;
/* Reallocate argv and envp with 64 bit pointers. */
argv64 = (char **) _malloc32 (sizeof (char *) * (argc + 1));
for (i = 0; i < argc; i++)
argv64[i] = (char *) (__int64)(((int *) (__int64) argv)[i]);
argv64[argc] = NULL;
for (i = 0; ((int *) (__int64) envp)[i]; i++)
envp64 = (char **) _malloc32 (sizeof (char *) * (i + 1));
for (i = 0; ((int *) (__int64) envp)[i]; i++)
envp64[i] = (char *)(__int64)(((int *) (__int64) envp)[i]);
envp64[i] = NULL;
argv64 = (char **)(__int64)argv;
envp64 = (char **)(__int64)envp;
status = main (argc, argv64, envp64);
if (flags & MAIN_FLAG_POSIX)
/* Map into a range of 0 - 255. */
status &= 255;
if (status != 0)
int save_status = status;
status = (__int64) &C$_EXIT1 + ((status - 1) << STS$V_MSG_NO);
/* An exit failure status requires a "severe" error. All
status values are defined in errno with a successful (1)
severity but can be changed to an error (2) severity by
adding 1. In addition for compatibility with UNIX exit()
routines we inhibit a run-time error message from being
generated on exit(1). */
if (save_status == 1)
status |= STS$M_INHIB_MSG;
status = SS$_NORMAL;
return status;