2 Copyright (C) 1995-1998,2000,2002,2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #include <bits/setjmp.h>
24 #include <asm-syntax.h>
28 #define PARMS LINKAGE /* no space for saved regs */
30 #define VAL JBUF+PTR_SIZE
32 ENTRY (BP_SYM (__longjmp))
36 movl JBUF(%esp), %eax /* User's jmp_buf in %eax. */
37 CHECK_BOUNDS_BOTH_WIDE (%eax, JBUF(%esp), $JB_SIZE)
39 /* Save the return address now. */
40 movl (JB_PC*4)(%eax), %edx
41 /* Get the stack pointer. */
42 movl (JB_SP*4)(%eax), %ecx
46 cfi_register(%eip, %edx)
47 cfi_register(%esp, %ecx)
48 cfi_offset(%ebx, JB_BX*4)
49 cfi_offset(%esi, JB_SI*4)
50 cfi_offset(%edi, JB_DI*4)
51 cfi_offset(%ebp, JB_BP*4)
52 /* Restore registers. */
53 movl (JB_BX*4)(%eax), %ebx
54 movl (JB_SI*4)(%eax), %esi
55 movl (JB_DI*4)(%eax), %edi
56 movl (JB_BP*4)(%eax), %ebp
62 movl VAL(%esp), %eax /* Second argument is return value. */
65 movl JBUF(%esp), %ecx /* User's jmp_buf in %ecx. */
66 CHECK_BOUNDS_BOTH_WIDE (%ecx, JBUF(%esp), $JB_SIZE)
68 movl VAL(%esp), %eax /* Second argument is return value. */
69 /* Save the return address now. */
70 movl (JB_PC*4)(%ecx), %edx
71 /* Restore registers. */
72 movl (JB_BX*4)(%ecx), %ebx
73 movl (JB_SI*4)(%ecx), %esi
74 movl (JB_DI*4)(%ecx), %edi
75 movl (JB_BP*4)(%ecx), %ebp
76 movl (JB_SP*4)(%ecx), %esp
78 /* Jump to saved PC. */
80 END (BP_SYM (__longjmp))