From e4783be84ce77c61c4fbfbbe372b9d074b645cf6 Mon Sep 17 00:00:00 2001
From: David Mosberger-Tang <davidm@hpl.hp.com>
Date: Wed, 27 Apr 2005 21:19:37 -0700
Subject: [PATCH] --- yaml --- r: 3964 b: refs/heads/master c:
 70929a57cfea8c18de13fcea9ae6771018a98949 h: refs/heads/master v: v3

---
 [refs]                        |  2 +-
 trunk/arch/ia64/kernel/gate.S | 31 ++++++++++++++++++-------------
 2 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/[refs] b/[refs]
index 53964bcd9b4e..a7a3f6ed667d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f8fa5448fc9b4a7806b1297a0b57808f12fe4d43
+refs/heads/master: 70929a57cfea8c18de13fcea9ae6771018a98949
diff --git a/trunk/arch/ia64/kernel/gate.S b/trunk/arch/ia64/kernel/gate.S
index facf75acdc85..3cd3f2e971f6 100644
--- a/trunk/arch/ia64/kernel/gate.S
+++ b/trunk/arch/ia64/kernel/gate.S
@@ -79,31 +79,34 @@ GLOBAL_ENTRY(__kernel_syscall_via_epc)
 	;;
 	rsm psr.be // note: on McKinley "rsm psr.be/srlz.d" is slightly faster than "rum psr.be"
 	LOAD_FSYSCALL_TABLE(r14)
-
+	;;
 	mov r16=IA64_KR(CURRENT)		// 12 cycle read latency
-	tnat.nz p10,p9=r15
+	shladd r18=r17,3,r14
 	mov r19=NR_syscalls-1
 	;;
-	shladd r18=r17,3,r14
-
-	srlz.d
-	cmp.ne p8,p0=r0,r0			// p8 <- FALSE
+	lfetch [r18]				// M0|1
+	mov r29=psr				// read psr (12 cyc load latency)
 	/* Note: if r17 is a NaT, p6 will be set to zero.  */
 	cmp.geu p6,p7=r19,r17			// (syscall > 0 && syscall < 1024+NR_syscalls)?
 	;;
-(p6)	ld8 r18=[r18]
 	mov r21=ar.fpsr
-	add r14=-8,r14				// r14 <- addr of fsys_bubble_down entry
+	tnat.nz p10,p9=r15
+	mov r26=ar.pfs
 	;;
+	srlz.d
+(p6)	ld8 r18=[r18]
+	nop.i 0
+	;;
+	nop.m 0
 (p6)	mov b7=r18
-(p6)	tbit.z p8,p0=r18,0
+(p6)	tbit.z.unc p8,p0=r18,0
+
+	nop.m 0
+	nop.i 0
 (p8)	br.dptk.many b7
 
-(p6)	rsm psr.i
 	mov r27=ar.rsc
-	mov r26=ar.pfs
-	;;
-	mov r29=psr				// read psr (12 cyc load latency)
+(p6)	rsm psr.i
 /*
  * brl.cond doesn't work as intended because the linker would convert this branch
  * into a branch to a PLT.  Perhaps there will be a way to avoid this with some
@@ -111,6 +114,8 @@ GLOBAL_ENTRY(__kernel_syscall_via_epc)
  * instead.
  */
 #ifdef CONFIG_ITANIUM
+	add r14=-8,r14				// r14 <- addr of fsys_bubble_down entry
+	;;
 (p6)	ld8 r14=[r14]				// r14 <- fsys_bubble_down
 	;;
 (p6)	mov b7=r14