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[patch] libc/sys/h8300hms/crt0.S: Optimize.
- To: newlib at sources dot redhat dot com
- Subject: [patch] libc/sys/h8300hms/crt0.S: Optimize.
- From: Kazu Hirata <kazu at hxi dot com>
Hi,
Attached is a patch to optimize libc/sys/h8300hms/crt0.S.
OK to apply? (I think I have a write access.)
Thanks,
Kazu Hirata
===File ~/gnu/newlib/ChangeLog-crt0.S=======================
2000-08-30 Kazu Hirata <kazu@hxi.com>
* libc/sys/h8300hms/crt0.S: Optimize for both speed and code size.
============================================================
===File ~/gnu/newlib/crt0.S.patch===========================
Index: crt0.S
===================================================================
RCS file: /cvs/src/src/newlib/libc/sys/h8300hms/crt0.S,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 crt0.S
--- crt0.S 2000/02/17 19:39:50 1.1.1.1
+++ crt0.S 2000/08/30 19:55:44
@@ -8,7 +8,7 @@
mov.w #_stack,sp
mov.w #_edata,r0
mov.w #_end,r1
- mov.w #0,r2
+ sub.w r2,r2
.loop: mov.w r2,@r0
adds #2,r0
cmp r1,r0
@@ -31,7 +31,7 @@
mov.l #_stack,sp
mov.l #_edata,er0
mov.l #_end,er1
- mov.w #0,r2 ; not sure about alignment requirements
+ sub.w r2,r2 ; not sure about alignment requirements
.loop: mov.w r2,@er0 ; playing it safe for now
adds #2,er0
cmp.l er1,er0
@@ -54,7 +54,7 @@
mov.l #_stack,sp
mov.l #_edata,er0
mov.l #_end,er1
- mov.w #0,r2 ; not sure about alignment requirements
+ sub.w r2,r2 ; not sure about alignment requirements
.loop: mov.w r2,@er0 ; playing it safe for now
adds #2,er0
cmp.l er1,er0
============================================================