aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--ChangeLog4
-rw-r--r--sysdeps/alpha/bits/setjmp.h6
2 files changed, 10 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index d937bdbe04..d8c3631b91 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+1998-04-24 5:45 Richard Henderson <rth@cygnus.com>
+
+ * sysdeps/alpha/bits/setjmp.h (_JMPBUF_UNWINDS): Added.
+
Wed Apr 22 11:06:09 1998 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/bits/setjmp.h (_JMPBUF_UNWINDS): Added.
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