Rewrote i386 setjmp in assembly.

Thu Aug 31 13:23:35 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>

	* sysdeps/unix/i386/brk.S [PIC]: Set __curbrk through the GOT.

	Rewrote i386 setjmp code in assembly, so as to avoid fighting
	with the compiler for the register values.
	* sysdeps/i386/setjmp.S, sysdeps/i386/__longjmp.S: New files.
	* sysdeps/i386/setjmp.c, sysdeps/i386/__longjmp.c: Files removed.
	* sysdeps/i386/jmp_buf.h [! _ASM] (__jmp_buf): Define as array of ints.
	[__USE_MISC || _ASM] (JB_*): New macros, for indices therein.
	(_JMPBUF_UNWINDS): Use JB_SP.

1 files changed, 0 insertions, 55 deletions

diff --git a/sysdeps/i386/setjmp.c b/sysdeps/i386/setjmp.c
deleted file mode 100644
index fb8fc98..0000000
--- a/sysdeps/i386/setjmp.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Copyright (C) 1991, 1992, 1994 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., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
-
-/* Put these global register declarations first, because we get an error if
-   they come after any function definition, including inlines which might
-   be in some header.  */
-
-#define REGS \
-  REG (bx);\
-  REG (si);\
-  REG (di)
-
-#define REG(xx) register long int xx asm (#xx)
-REGS;
-#undef	REG
-
-#include <errno.h>
-#include <setjmp.h>
-
-/* Save the current program position in ENV and return 0.  */
-int
-__sigsetjmp (jmp_buf env, int savemask)
-{
-  /* Save the general registers.  */
-#define	REG(xx)	env[0].__jmpbuf[0].__##xx = xx
-  REGS;
-#undef REG
-
-  /* Save the return PC.  */
-  env[0].__jmpbuf[0].__pc = ((void **) &env)[-1];
-
-  /* Save caller's FP, not our own.  */
-  env[0].__jmpbuf[0].__bp = ((void **) &env)[-2];
-
-  /* Save caller's SP, not our own.  */
-  env[0].__jmpbuf[0].__sp = (void *) &env;
-
-  /* Save the signal mask if requested.  */
-  return __sigjmp_save (env, savemask);
-}