diff options
Diffstat (limited to 'sysdeps/x86_64/bits/setjmp.h')
| -rw-r--r-- | sysdeps/x86_64/bits/setjmp.h | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/sysdeps/x86_64/bits/setjmp.h b/sysdeps/x86_64/bits/setjmp.h index c9b98b2e3b..96646efdda 100644 --- a/sysdeps/x86_64/bits/setjmp.h +++ b/sysdeps/x86_64/bits/setjmp.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2001,2002,2003,2005,2006 Free Software Foundation, Inc. +/* Copyright (C) 2001, 2002, 2003 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 @@ -26,6 +26,36 @@ #include <bits/wordsize.h> +#if __WORDSIZE == 64 + +/* We only need to save callee-saved registers plus stackpointer and + program counter. */ +# if defined __USE_MISC || defined _ASM +# define JB_RBX 0 +# define JB_RBP 1 +# define JB_R12 2 +# define JB_R13 3 +# define JB_R14 4 +# define JB_R15 5 +# define JB_RSP 6 +# define JB_PC 7 +# define JB_SIZE (8*8) +# endif + +#else + +# if defined __USE_MISC || defined _ASM +# define JB_BX 0 +# define JB_SI 1 +# define JB_DI 2 +# define JB_BP 3 +# define JB_SP 4 +# define JB_PC 5 +# define JB_SIZE 24 +# endif + +#endif + #ifndef _ASM # if __WORDSIZE == 64 @@ -34,6 +64,15 @@ typedef long int __jmp_buf[8]; typedef int __jmp_buf[6]; # endif +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +# if __WORDSIZE == 64 +# define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((void *) (address) < (void *) (jmpbuf)[JB_RSP]) +# else +# define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((void *) (address) < (void *) (jmpbuf)[JB_SP]) +# endif #endif #endif /* bits/setjmp.h */ |