Retro68/gcc/libgcc/config/nvptx/crt0.c
2017-10-07 02:16:47 +02:00

50 lines
1.8 KiB
C

/* Copyright (C) 2014-2017 Free Software Foundation, Inc.
This file 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.
This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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
<http://www.gnu.org/licenses/>. */
int *__exitval_ptr;
extern void __attribute__((noreturn)) exit (int status);
extern int main (int, void **);
/* Always setup soft stacks to allow testing with -msoft-stack but without
-mgomp. 32 is the maximum number of warps in a CTA: the definition here
must match the external declaration emitted by the compiler. */
void *__nvptx_stacks[32] __attribute__((shared,nocommon));
/* Likewise for -muniform-simt. */
unsigned __nvptx_uni[32] __attribute__((shared,nocommon));
void __attribute__((kernel))
__main (int *rval_ptr, int argc, void **argv)
{
__exitval_ptr = rval_ptr;
/* Store something non-zero, so the host knows something went wrong,
if we fail to reach exit properly. */
if (rval_ptr)
*rval_ptr = 255;
static char stack[131072] __attribute__((aligned(8)));
__nvptx_stacks[0] = stack + sizeof stack;
__nvptx_uni[0] = 0;
exit (main (argc, argv));
}