From a4d23ef7adc37a83d315a041e081337118e06e6b Mon Sep 17 00:00:00 2001
From: Lephe <sebastien.michelland@protonmail.com>
Date: Tue, 28 Jul 2020 17:34:25 +0200
Subject: [PATCH] libc: faster memset

---
 src/std/memset.s | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/std/memset.s b/src/std/memset.s
index 183c64d..4aa6a8a 100644
--- a/src/std/memset.s
+++ b/src/std/memset.s
@@ -31,12 +31,28 @@ _memset_align:
 	bf/s	_memset_align
 	dt	r6
 
+	mov	#40, r2
+
+.aligned4_32:
+	add	#-32, r4
+	add	#-32, r6
+	mov.l	r0, @(28,r4)
+	mov.l	r0, @(24,r4)
+	mov.l	r0, @(20,r4)
+	mov.l	r0, @(16,r4)
+	mov.l	r0, @(12,r4)
+	mov.l	r0, @(8,r4)
+	mov.l	r0, @(4,r4)
+	cmp/ge	r6, r2
+	bf/s	.aligned4_32
+	mov.l	r0, @r4
+
 	mov	#8, r2
 
-.aligned4:
+.aligned4_4:
 	mov.l	r0, @-r4
 	cmp/ge	r6, r2
-	bf/s	.aligned4
+	bf/s	.aligned4_4
 	add	#-4, r6
 
 _naive_memset: