diff options
Diffstat (limited to 'sysdeps/x86_64/__longjmp.S')
| -rw-r--r-- | sysdeps/x86_64/__longjmp.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/x86_64/__longjmp.S b/sysdeps/x86_64/__longjmp.S new file mode 100644 index 0000000000..1962b7f1aa --- /dev/null +++ b/sysdeps/x86_64/__longjmp.S @@ -0,0 +1,44 @@ +/* Copyright (C) 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. */ + +#include <sysdep.h> +#define _ASM +#define _SETJMP_H +#include <bits/setjmp.h> +#include <asm-syntax.h> + +/* Jump to the position specified by ENV, causing the + setjmp call there to return VAL, or 1 if VAL is 0. + void __longjmp (__jmp_buf env, int val). */ +ENTRY(__longjmp) + /* Restore registers. */ + movq (JB_RBX*8)(%rdi),%rbx + movq (JB_RBP*8)(%rdi),%rbp + movq (JB_R12*8)(%rdi),%r12 + movq (JB_R13*8)(%rdi),%r13 + movq (JB_R14*8)(%rdi),%r14 + movq (JB_R15*8)(%rdi),%r15 + /* Set return value for setjmp. */ + test %esi,%esi + mov $01,%eax + cmove %eax,%esi + mov %esi, %eax + movq (JB_PC*8)(%rdi),%rdx + movq (JB_RSP*8)(%rdi),%rsp + jmpq *%rdx +END (BP_SYM (__longjmp)) |