From 4af6e4ade676d122e1cad3a8e68400907d615a91 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@redhat.com>
Date: Thu, 23 Apr 1998 22:46:39 +0000
Subject: [PATCH] (_JMPBUF_UNWINDS): Added.

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

diff --git a/sysdeps/alpha/bits/setjmp.h b/sysdeps/alpha/bits/setjmp.h
index de37019..af0b5ae 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
-- 
2.7.4