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Diffstat (limited to 'sysdeps/i386/bits/setjmp.h')
-rw-r--r--sysdeps/i386/bits/setjmp.h18
1 files changed, 16 insertions, 2 deletions
diff --git a/sysdeps/i386/bits/setjmp.h b/sysdeps/i386/bits/setjmp.h
index 0133c40e70..107fe58b35 100644
--- a/sysdeps/i386/bits/setjmp.h
+++ b/sysdeps/i386/bits/setjmp.h
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997,1998,2000,2001,2003,2005,2006
- Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998, 2000, 2001, 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
@@ -25,8 +24,23 @@
# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
#endif
+#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
+
#ifndef _ASM
typedef int __jmp_buf[6];
#endif
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+ ((void *) (address) < (void *) (jmpbuf)[JB_SP])
+
#endif /* bits/setjmp.h */