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Use the cookie field in the podulebus tag (current unused) as a register 

shift value thus making register more flexible.
Remove the absolute shift of 2 in all the podule read/write routines and
use the tag cookie (passed in r0) as the shift value.
This commit is contained in:
mark 1997-07-30 23:52:08 +00:00
parent 9f3b240e5c
commit 258768a81d
1 changed files with 15 additions and 9 deletions
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24
sys/arch/arm32/podulebus/podulebus_io_asm.S
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@ -1,4 +1,4 @@
/* $NetBSD: podulebus_io_asm.S,v 1.2 1997/01/26 01:55:04 mark Exp $ */
/* $NetBSD: podulebus_io_asm.S,v 1.3 1997/07/30 23:52:08 mark Exp $ */
/*
* Copyright (c) 1997 Mark Brinicombe.
@ -48,19 +48,22 @@ pc .req r15
.global _podulebus_r_1
_podulebus_r_1:
ldrb r0, [r1, r2, lsl #2]
mov r2, r2, lsl r0
ldrb r0, [r1, r2]
mov pc, lr
.global _podulebus_r_2
_podulebus_r_2:
ldr r0, [r1, r2, lsl #2]
mov r2, r2, lsl r0
ldr r0, [r1, r2]
bic r0, r0, #0xff000000
bic r0, r0, #0x00ff0000
mov pc, lr
.global _podulebus_r_4
_podulebus_r_4:
ldr r0, [r1, r2, lsl #2]
mov r2, r2, lsl r0
ldr r0, [r1, r2]
mov pc, lr
.global _podulebus_r_8
@ -78,19 +81,22 @@ podulebus_r_8_text:
.global _podulebus_w_1
_podulebus_w_1:
strb r3, [r1, r2, lsl #2]
mov r2, r2, lsl r0
strb r3, [r1, r2]
mov pc, lr
.global _podulebus_w_2
_podulebus_w_2:
mov r3, r3, lsl #16
orr r3, r3, r3, lsr #16
str r3, [r1, r2, lsl #2]
mov r2, r2, lsl r0
str r3, [r1, r2]
mov pc, lr
.global _podulebus_w_4
_podulebus_w_4:
str r3, [r1, r2, lsl #2]
mov r2, r2, lsl r0
str r3, [r1, r2]
mov pc, lr
.global _podulebus_w_8
@ -117,7 +123,7 @@ podulebus_rm_1_text:
.global _podulebus_rm_2
_podulebus_rm_2:
add r0, r1, r2, lsl #2
add r0, r1, r2, lsl r0
mov r1, r3
ldr r2, [sp, #0]
b _insw
@ -155,7 +161,7 @@ podulebus_wm_1_text:
.global _podulebus_wm_2
_podulebus_wm_2:
add r0, r1, r2, lsl #2
add r0, r1, r2, lsl r0
mov r1, r3
ldr r2, [sp, #0]
b _outsw