From: Roland McGrath <roland@gnu.org>
Date: Sun, 2 Jun 1996 18:48:36 +0000 (+0000)
Subject: Wed May 29 00:57:37 1996  David Mosberger-Tang  <davidm@azstarnet.com>
X-Git-Tag: upstream/2.30~10627^2~3815
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d663482017d73707e4f9181a1dad1557b596e2a4;p=external%2Fglibc.git

Wed May 29 00:57:37 1996  David Mosberger-Tang  <davidm@azstarnet.com>

	* sysdeps/unix/bsd/osf/alpha/brk.S,
 	sysdeps/unix/sysv/linux/alpha/brk.S (__curbrk): Store the entire
 	break value, not just the low 32 bits to accomodate large
 	memories.
Tue May 28 10:46:04 1996  Richard Henderson  <rth@tamu.edu>

	* sysdeps/unix/sysv/linux/alpha/brk.S: Rather than attempt to
	dynamically resolve _end for initializing __curbrk, support the
	brk(0) query idiom.
---

diff --git a/sysdeps/unix/sysv/linux/alpha/brk.S b/sysdeps/unix/sysv/linux/alpha/brk.S
index 4582539..1c4a4f9 100644
--- a/sysdeps/unix/sysv/linux/alpha/brk.S
+++ b/sysdeps/unix/sysv/linux/alpha/brk.S
@@ -23,17 +23,7 @@ break value (instead of the new, requested one).  */
 #include <sysdep.h>
 #include <errnos.h>
 
-#ifndef       HAVE_GNU_LD
-#define _end           end
-#endif
-
-	.extern _end,8
-
-	.data
-
-	.globl __curbrk
-__curbrk:
-	.quad _end
+.comm __curbrk, 8
 
 	.text
 LEAF(__brk, 0)
@@ -42,11 +32,15 @@ LEAF(__brk, 0)
 
 	ldi	v0, __NR_brk
 	call_pal PAL_callsys
+
+	/* Correctly handle the brk(0) query case.  */
+	cmoveq	a0, v0, a0
+
 	subq	a0, v0, t0
 	bne	t0, error
 
 	/* Update __curbrk and return cleanly.  */
-	stl	a0, __curbrk
+	stq	a0, __curbrk
 	mov	zero, v0
 	ret
 
@@ -54,6 +48,6 @@ LEAF(__brk, 0)
 error:	ldi	v0, ENOMEM
 	jmp	zero, syscall_error
 
-	.end __brk
+	END(__brk)
 
 weak_alias (__brk, brk)