diff options
Diffstat (limited to 'sysdeps/i386/__longjmp.S')
| -rw-r--r-- | sysdeps/i386/__longjmp.S | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/sysdeps/i386/__longjmp.S b/sysdeps/i386/__longjmp.S index 6b590f7f04..559d56b250 100644 --- a/sysdeps/i386/__longjmp.S +++ b/sysdeps/i386/__longjmp.S @@ -1,5 +1,5 @@ /* longjmp for i386. - Copyright (C) 1995,1996,1997,1998,2000,2002 Free Software Foundation, Inc. + Copyright (C) 1995-1998,2000,2002,2005, 2006 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 @@ -18,9 +18,7 @@ 02111-1307 USA. */ #include <sysdep.h> -#define _ASM -#define _SETJMP_H -#include <bits/setjmp.h> +#include <jmpbuf-offsets.h> #include <asm-syntax.h> #include <bp-sym.h> #include <bp-asm.h> @@ -32,6 +30,36 @@ ENTRY (BP_SYM (__longjmp)) ENTER +#ifdef PTR_DEMANGLE + movl JBUF(%esp), %eax /* User's jmp_buf in %eax. */ + CHECK_BOUNDS_BOTH_WIDE (%eax, JBUF(%esp), $JB_SIZE) + + /* Save the return address now. */ + movl (JB_PC*4)(%eax), %edx + /* Get the stack pointer. */ + movl (JB_SP*4)(%eax), %ecx + PTR_DEMANGLE (%edx) + PTR_DEMANGLE (%ecx) + cfi_def_cfa(%eax, 0) + cfi_register(%eip, %edx) + cfi_register(%esp, %ecx) + cfi_offset(%ebx, JB_BX*4) + cfi_offset(%esi, JB_SI*4) + cfi_offset(%edi, JB_DI*4) + cfi_offset(%ebp, JB_BP*4) + /* Restore registers. */ + movl (JB_BX*4)(%eax), %ebx + movl (JB_SI*4)(%eax), %esi + movl (JB_DI*4)(%eax), %edi + movl (JB_BP*4)(%eax), %ebp + cfi_restore(%ebx) + cfi_restore(%esi) + cfi_restore(%edi) + cfi_restore(%ebp) + + movl VAL(%esp), %eax /* Second argument is return value. */ + movl %ecx, %esp +#else movl JBUF(%esp), %ecx /* User's jmp_buf in %ecx. */ CHECK_BOUNDS_BOTH_WIDE (%ecx, JBUF(%esp), $JB_SIZE) @@ -44,6 +72,7 @@ ENTRY (BP_SYM (__longjmp)) movl (JB_DI*4)(%ecx), %edi movl (JB_BP*4)(%ecx), %ebp movl (JB_SP*4)(%ecx), %esp +#endif /* Jump to saved PC. */ jmp *%edx END (BP_SYM (__longjmp)) |