projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 | 1 | /* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. i386 version. |
| 0ecb606c | 2 | Copyright (C) 1994-1997,2000-2002,2005, 2006 Free Software Foundation, Inc. |
| c57abfa7 | 3 | This file is part of the GNU C Library. |
| 28f540f4 | 4 | |
| c57abfa7 | 5 | The GNU C Library is free software; you can redistribute it and/or |
| 41bdb6e2 AJ |
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. | |
| 28f540f4 | 9 | |
| c57abfa7 UD |
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 | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 28f540f4 | 14 | |
| 41bdb6e2 AJ |
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 | |
| 18 | 02111-1307 USA. */ | |
| 28f540f4 RM |
19 | |
| 20 | /* This just does a tail-call to `__sigsetjmp (ARG, 0)'. | |
| 21 | We cannot do it in C because it must be a tail-call, so frame-unwinding | |
| 22 | in setjmp doesn't clobber the state restored by longjmp. */ | |
| 23 | ||
| 24 | #include <sysdep.h> | |
| 0ecb606c | 25 | #include <jmpbuf-offsets.h> |
| e5f88e0c GM |
26 | #include "bp-sym.h" |
| 27 | #include "bp-asm.h" | |
| 28f540f4 | 28 | |
| 376c348c UD |
29 | #define PARMS LINKAGE /* no space for saved regs */ |
| 30 | #define JMPBUF PARMS | |
| 31 | #define SIGMSK JMPBUF+PTR_SIZE | |
| 32 | ||
| e5f88e0c | 33 | ENTRY (BP_SYM (_setjmp)) |
| 376c348c UD |
34 | ENTER |
| 35 | ||
| eca90c85 UD |
36 | xorl %eax, %eax |
| 37 | movl JMPBUF(%esp), %edx | |
| 38 | CHECK_BOUNDS_BOTH_WIDE (%edx, JMPBUF(%esp), $(JB_SIZE+4)) | |
| 376c348c UD |
39 | |
| 40 | /* Save registers. */ | |
| eca90c85 UD |
41 | movl %ebx, (JB_BX*4)(%edx) |
| 42 | movl %esi, (JB_SI*4)(%edx) | |
| 43 | movl %edi, (JB_DI*4)(%edx) | |
| 376c348c | 44 | leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */ |
| 0ecb606c JJ |
45 | #ifdef PTR_MANGLE |
| 46 | PTR_MANGLE (%ecx) | |
| 47 | #endif | |
| eca90c85 | 48 | movl %ecx, (JB_SP*4)(%edx) |
| 376c348c | 49 | movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */ |
| 0ecb606c JJ |
50 | #ifdef PTR_MANGLE |
| 51 | PTR_MANGLE (%ecx) | |
| 52 | #endif | |
| eca90c85 | 53 | movl %ecx, (JB_PC*4)(%edx) |
| 376c348c | 54 | LEAVE |
| eca90c85 UD |
55 | movl %ebp, (JB_BP*4)(%edx) /* Save caller's frame pointer. */ |
| 56 | ||
| 57 | movl %eax, JB_SIZE(%edx) /* No signal mask set. */ | |
| 376c348c | 58 | ret |
| e5f88e0c | 59 | END (BP_SYM (_setjmp)) |
| a4baf360 | 60 | libc_hidden_def (_setjmp) |