diff options
Diffstat (limited to 'libc/sysdeps/linux/x86_64/setjmp.S')
| -rw-r--r-- | libc/sysdeps/linux/x86_64/setjmp.S | 46 |
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; |