2 Copyright (C) 1995-1998,2000,2002,2005,2006,2009
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include <jmpbuf-offsets.h>
23 #include <asm-syntax.h>
27 #define PARMS LINKAGE /* no space for saved regs */
29 #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
49 cfi_register(%eip, %edx)
50 cfi_register(%esp, %ecx)
51 cfi_offset(%ebx, JB_BX*4)
52 cfi_offset(%esi, JB_SI*4)
53 cfi_offset(%edi, JB_DI*4)
54 cfi_offset(%ebp, JB_BP*4)
55 /* Restore registers. */
56 movl (JB_BX*4)(%eax), %ebx
57 movl (JB_SI*4)(%eax), %esi
58 movl (JB_DI*4)(%eax), %edi
59 movl (JB_BP*4)(%eax), %ebp
65 movl VAL(%esp), %eax /* Second argument is return value. */
68 movl JBUF(%esp), %ecx /* User's jmp_buf in %ecx. */
69 CHECK_BOUNDS_BOTH_WIDE (%ecx, JBUF(%esp), $JB_SIZE)
72 movl (JB_SP*4)(%ecx), %eax
76 movl VAL(%esp), %eax /* Second argument is return value. */
77 /* Save the return address now. */
78 movl (JB_PC*4)(%ecx), %edx
79 /* Restore registers. */
80 movl (JB_BX*4)(%ecx), %ebx
81 movl (JB_SI*4)(%ecx), %esi
82 movl (JB_DI*4)(%ecx), %edi
83 movl (JB_BP*4)(%ecx), %ebp
84 movl (JB_SP*4)(%ecx), %esp
86 /* Jump to saved PC. */
88 END (BP_SYM (__longjmp))