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Diffstat (limited to 'pjlib/src/pj/compat/setjmp_i386.S')
-rw-r--r--pjlib/src/pj/compat/setjmp_i386.S61
1 files changed, 61 insertions, 0 deletions
diff --git a/pjlib/src/pj/compat/setjmp_i386.S b/pjlib/src/pj/compat/setjmp_i386.S
new file mode 100644
index 0000000..9cdaaff
--- /dev/null
+++ b/pjlib/src/pj/compat/setjmp_i386.S
@@ -0,0 +1,61 @@
+/* setjmp for i386, ELF version.
+ Copyright (C) 1995, 1996, 1997, 2000, 2001 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define _ASM
+#define _SETJMP_H
+#define PJ_LINUX_KERNEL 1
+#include <pj/compat/setjmp.h>
+
+
+.global __sigsetjmp
+.type __sigsetjmp,%function
+.align 4
+
+__sigsetjmp:
+ movl 4 (%esp), %eax
+ /* Save registers. */
+ movl %ebx, (0 *4)(%eax)
+ movl %esi, (1 *4)(%eax)
+ movl %edi, (2 *4)(%eax)
+ /* Save SP as it will be after we return. */
+ leal 4(%esp), %ecx
+ movl %ecx, (4 *4)(%eax)
+ /* Save PC we are returning to now. */
+ movl 0(%esp), %ecx
+ movl %ecx, (5 *4)(%eax)
+ /* Save caller's frame pointer. */
+ movl %ebp, (3 *4)(%eax)
+
+ /* Make a tail call to __sigjmp_save; it takes the same args. */
+#ifdef __PIC__
+ /* We cannot use the PLT, because it requires that %ebx be set, but
+ we can't save and restore our caller's value. Instead, we do an
+ indirect jump through the GOT, using for the temporary register
+ %ecx, which is call-clobbered. */
+ call .Lhere
+.Lhere:
+ popl %ecx
+ addl $_GLOBAL_OFFSET_TABLE_+[.- .Lhere ], %ecx
+ movl __sigjmp_save @GOT (%ecx), %ecx
+ jmp *%ecx
+#else
+ jmp __sigjmp_save
+#endif
+.size __sigsetjmp,.-__sigsetjmp
+