From a55e5526e2a32237bc2afc9c1fa45c376c522895 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@redhat.com>
Date: Thu, 23 Apr 1998 22:46:39 +0000
Subject: (_JMPBUF_UNWINDS): Added.

1998-04-24  5:45  Richard Henderson  <rth@cygnus.com>

	* sysdeps/alpha/bits/setjmp.h (_JMPBUF_UNWINDS): Added.
---
 sysdeps/alpha/bits/setjmp.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'sysdeps/alpha')

diff --git a/sysdeps/alpha/bits/setjmp.h b/sysdeps/alpha/bits/setjmp.h
index de37019218..af0b5ae577 100644
--- a/sysdeps/alpha/bits/setjmp.h
+++ b/sysdeps/alpha/bits/setjmp.h
@@ -74,4 +74,10 @@
 
 #ifndef __ASSEMBLY__
 typedef long int __jmp_buf[17];
+
+/* Test if longjmp to JMPBUF would unwind the frame containing a local
+   variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(_jmpbuf, _address)				\
+  ({ register void *_sp __asm__("$30"); void *_addr = (_address);	\
+     _sp <= _addr && _addr < (void *)((_jmpbuf)[JB_SP]); })
 #endif
-- 
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