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Diffstat (limited to 'libc/sysdeps/linux/x86_64/setjmp.S')
-rw-r--r--libc/sysdeps/linux/x86_64/setjmp.S46
1 files changed, 46 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/x86_64/setjmp.S b/libc/sysdeps/linux/x86_64/setjmp.S
new file mode 100644
index 000000000..cb560248b
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/setjmp.S
@@ -0,0 +1,46 @@
+/* setjmp for x86-64.
+ Copyright (C) 2001, 2003 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
+#include <bits/setjmp.h>
+
+.globl __sigsetjmp;
+.type __sigsetjmp,@function
+.align 4;
+__sigsetjmp:
+ /* Save registers. */
+ movq %rbx, (JB_RBX*8)(%rdi)
+ movq %rbp, (JB_RBP*8)(%rdi)
+ movq %r12, (JB_R12*8)(%rdi)
+ movq %r13, (JB_R13*8)(%rdi)
+ movq %r14, (JB_R14*8)(%rdi)
+ movq %r15, (JB_R15*8)(%rdi)
+ leaq 8(%rsp), %rdx /* Save SP as it will be after we return. */
+ movq %rdx, (JB_RSP*8)(%rdi)
+ movq (%rsp), %rax /* Save PC we are returning to now. */
+ movq %rax, (JB_PC*8)(%rdi)
+
+ /* Make a tail call to __sigjmp_save; it takes the same args. */
+#ifdef __PIC__
+ jmp __sigjmp_save@PLT
+#else
+ jmp __sigjmp_save
+#endif
+.size __sigsetjmp,.-__sigsetjmp;