From 8110cc37fb816ba4dedf5039e7420057d36c3a2d Mon Sep 17 00:00:00 2001
From: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 3 Jun 2001 22:08:26 +0000
Subject: [PATCH] * config/sh/lib1funcs.asm (ic_invalidate): Align the
 cache-mirroring sequence.  Add nops.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@42833 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog               |  5 +++++
 gcc/config/sh/lib1funcs.asm | 11 ++++++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c77ed73ae867..a5630817fc98 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-06-03  Alexandre Oliva  <aoliva@redhat.com>
+
+	* config/sh/lib1funcs.asm (ic_invalidate): Align the
+	cache-mirroring sequence.  Add nops.
+
 2001-06-03  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* doc/install-old.texi: Remove more old installation
diff --git a/gcc/config/sh/lib1funcs.asm b/gcc/config/sh/lib1funcs.asm
index d2a860efb5c1..21707587c9ec 100644
--- a/gcc/config/sh/lib1funcs.asm
+++ b/gcc/config/sh/lib1funcs.asm
@@ -1217,18 +1217,23 @@ GLOBAL(ic_invalidate):
 	ocbwb	@r4
 	mova	0f,r0
 	mov.w	1f,r1
+/* Compute how many cache lines 0f is away from r4.  */
 	sub	r0,r4
 	and	r1,r4
-	add	#4,r4
+/* Prepare to branch to 0f plus the cache-line offset.  */
+	add	# 0f - 1f,r4
 	braf	r4
 	nop
 1:
 	.short	0x1fe0
-	nop
+	.p2align 5
+/* This must be aligned to the beginning of a cache line.  */
 0:
-	.rept	2048
+	.rept	256 /* There are 256 cache lines of 32 bytes.  */
 	rts
+	.rept	15
 	nop
 	.endr
+	.endr
 #endif /* SH4 */
 #endif /* L_ic_invalidate */
-- 
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