From addb5f3176382693f987f0f44f3708f610d2e984 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 12 Jan 2003 19:29:11 +0000
Subject: Update.

2002-01-09  Richard Henderson  <rth@redhat.com>

	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Assume only
	ret follows pseudo, and thus avoid branch-to-branch in cancel
	case.  Use SYSCALL_ERROR_LABEL.
---
 .../sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h         | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

(limited to 'linuxthreads/sysdeps/unix')

diff --git a/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
index 18ea29c49f..083db2f39a 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
+++ b/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
@@ -33,6 +33,9 @@
 #  define PSEUDO_PROF
 # endif
 
+/* ??? Assumes that nothing comes between PSEUDO and PSEUDO_END
+   besides "ret".  */
+
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)			\
 	.globl name;						\
@@ -47,7 +50,7 @@ __LABEL(name)							\
 	bne	t0, $pseudo_cancel;				\
 	lda	v0, SYS_ify(syscall_name);			\
 	call_pal PAL_callsys;					\
-	bne	a3, $syscall_error;				\
+	bne	a3, SYSCALL_ERROR_LABEL;			\
 __LABEL($pseudo_ret)						\
 	.subsection 2;						\
 __LABEL($pseudo_cancel)						\
@@ -59,13 +62,17 @@ __LABEL($pseudo_cancel)						\
 	lda	v0, SYS_ify(syscall_name);			\
 	call_pal PAL_callsys;					\
 	stq	v0, 8(sp);					\
-	stq	a3, 16(sp);					\
+	bne	a3, $multi_error;				\
+	CDISABLE;						\
+	ldq	ra, 0(sp);					\
+	ldq	v0, 8(sp);					\
+	addq	sp, 64, sp;					\
+	ret;							\
+__LABEL($multi_error)						\
 	CDISABLE;						\
 	ldq	ra, 0(sp);					\
 	ldq	v0, 8(sp);					\
-	ldq	a3, 16(sp);					\
 	addq	sp, 64, sp;					\
-	beq	a3, $pseudo_ret;				\
 __LABEL($syscall_error)						\
 	SYSCALL_ERROR_HANDLER;					\
 	END(name);						\
-- 
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