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Diffstat (limited to 'sysdeps/x86_64/bits/setjmp.h')
-rw-r--r--sysdeps/x86_64/bits/setjmp.h41
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 */