initial import

1 files changed, 55 insertions, 0 deletions

diff --git a/sysdeps/i386/setjmp.c b/sysdeps/i386/setjmp.c
new file mode 100644
index 0000000000..fb8fc98659
--- /dev/null
+++ b/sysdeps/i386/setjmp.c
@@ -0,0 +1,55 @@
+/* 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);
+}