mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/* Copyright (C) 1991, 92, 93, 94, 95, 97 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <setjmp.h>
|
|
#include <stdlib.h>
|
|
|
|
/* Jump to the position specified by ENV, causing the
|
|
setjmp call there to return VAL, or 1 if VAL is 0. */
|
|
void
|
|
__longjmp (__jmp_buf env, int val)
|
|
{
|
|
/* This restores the FP and SP that setjmp's caller had,
|
|
and puts the return address into A0 and VAL into D0. */
|
|
|
|
#if defined(__HAVE_68881__) || defined(__HAVE_FPU__)
|
|
/* Restore the floating-point registers. */
|
|
asm volatile("fmovem%.x %0, %/fp0-%/fp7" :
|
|
/* No outputs. */ : "g" (env[0].__fpregs[0]));
|
|
#endif
|
|
|
|
/* Put VAL in D0. */
|
|
asm volatile("move%.l %0, %/d0" : /* No outputs. */ :
|
|
"g" (val == 0 ? 1 : val) : "d0");
|
|
|
|
asm volatile(/* Restore the data and address registers. */
|
|
"movem%.l %0, %/d1-%/d7/%/a0-%/a7\n"
|
|
/* Return to setjmp's caller. */
|
|
#ifdef __motorola__
|
|
"jmp (%/a0)"
|
|
#else
|
|
"jmp %/a0@"
|
|
#endif
|
|
: /* No outputs. */ : "g" (env[0].__dregs[0])
|
|
/* We don't bother with the clobbers,
|
|
because this code always jumps out anyway. */
|
|
);
|
|
|
|
/* Avoid `volatile function does return' warnings. */
|
|
for (;;);
|
|
}
|