diff options
Diffstat (limited to 'sysdeps/i386/setjmp.S')
| -rw-r--r-- | sysdeps/i386/setjmp.S | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/sysdeps/i386/setjmp.S b/sysdeps/i386/setjmp.S index 598eef78e7..25b7ac8fef 100644 --- a/sysdeps/i386/setjmp.S +++ b/sysdeps/i386/setjmp.S @@ -1,5 +1,5 @@ /* setjmp for i386. - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1997, 2000 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 @@ -19,29 +19,38 @@ #include <sysdep.h> #define _ASM +#define _SETJMP_H #include <bits/setjmp.h> #include <asm-syntax.h> +#include "bp-sym.h" +#include "bp-asm.h" /* Binary compatibility entry point. */ -ENTRY (__setjmp) - popl %eax /* Pop return address. */ - popl %ecx /* Pop jmp_buf. */ - pushl $0 /* Push zero argument. */ - pushl %ecx /* Push jmp_buf. */ - pushl %eax /* Push back return address. */ - -ENTRY (__sigsetjmp) - movl 4(%esp), %eax /* User's jmp_buf in %eax. */ +ENTRY (BP_SYM (__setjmp)) + PUSH_SIGNAL_MASK (0) + /* FALL THROUGH */ + +#define PARMS LINKAGE /* no space for saved regs */ +#define JMPBUF PARMS +#define SIGMSK JMPBUF+PTR_SIZE + +ENTRY (BP_SYM (__sigsetjmp)) + ENTER + + movl JMPBUF(%esp), %eax + CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE) + /* Save registers. */ movl %ebx, (JB_BX*4)(%eax) movl %esi, (JB_SI*4)(%eax) movl %edi, (JB_DI*4)(%eax) movl %ebp, (JB_BP*4)(%eax) - leal 4(%esp), %ecx /* Save SP as it will be after we return. */ + leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */ movl %ecx, (JB_SP*4)(%eax) - movl 0(%esp), %ecx /* Save PC we are returning to now. */ + movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */ movl %ecx, (JB_PC*4)(%eax) + LEAVE /* pop frame pointer to prepare for tail-call. */ /* Make a tail call to __sigjmp_save; it takes the same args. */ #ifdef PIC /* We cannot use the PLT, because it requires that %ebx be set, but @@ -52,9 +61,9 @@ ENTRY (__sigsetjmp) L(here): popl %ecx addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ecx - movl C_SYMBOL_NAME(__sigjmp_save@GOT)(%ecx), %ecx + movl C_SYMBOL_NAME (BP_SYM (__sigjmp_save)@GOT)(%ecx), %ecx jmp *%ecx #else - jmp __sigjmp_save + jmp BP_SYM (__sigjmp_save) #endif -END (__sigsetjmp) +END (BP_SYM (__sigsetjmp)) |