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giz wip (acc 16bit faster than 8!)

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@260 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-09-24 21:06:34 +00:00
parent 2ec14aec8f
commit 499a0be394
7 changed files with 201 additions and 50 deletions
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31
platform/gizmondo/asm_utils.s
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@ -65,7 +65,7 @@ vcloop_40_aligned:
mul r4, r5, r6
sub r1, r1, r4
vcloop_40_unaligned:
vcloop_40_unaligned_outer:
ldr r12, [r1], #4
ldr r7, [r1], #4
@ -73,42 +73,55 @@ vcloop_40_unaligned:
ldrh r4, [r2, r4]
and r5, lr, r12, lsr #7
ldrh r5, [r2, r5]
strh r4, [r0], #2
strh r4, [r0], #2
b vcloop_40_unaligned_enter
vcloop_40_unaligned:
ldr r12, [r1], #4
ldr r7, [r1], #4
and r6, lr, r12, lsl #1
ldrh r6, [r2, r6]
and r5, lr, r12, lsr #7
ldrh r5, [r2, r5]
orr r4, r4, r6, lsl #16
str r4, [r0], #4
vcloop_40_unaligned_enter:
and r6, lr, r12, lsr #15
ldrh r6, [r2, r6]
and r4, lr, r12, lsr #23
ldrh r4, [r2, r4]
orr r5, r5, r6, lsl #16
orr r5, r5, r6, lsl #16
and r8, lr, r7, lsl #1
ldrh r8, [r2, r8]
and r6, lr, r7, lsr #7
ldrh r6, [r2, r6]
orr r8, r4, r8, lsl #16
orr r8, r4, r8, lsl #16
and r12,lr, r7, lsr #15
ldrh r12,[r2, r12]
and r4, lr, r7, lsr #23
ldrh r4, [r2, r4]
orr r12,r6, r12,lsl #16
orr r12,r6, r12,lsl #16
subs r3, r3, #1<<24
stmia r0!, {r5,r8,r12}
strh r4, [r0], #2
bpl vcloop_40_unaligned
strh r4, [r0], #2
add r1, r1, #336 @ skip a line and 1 col
add r0, r0, #320*2+2*2
add r3, r3, #(320/8)<<24
sub r3, r3, #1
tst r3, #0xff
bne vcloop_40_unaligned
bne vcloop_40_unaligned_outer
ldmfd sp!, {r4-r9,lr}
bx lr