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tweaking pandora frontend

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@874 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2010-05-31 22:12:46 +00:00
parent 0c9ae59222
commit f6eaae4f09
16 changed files with 378 additions and 144 deletions
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60
pandora/asm_utils.s
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@ -1,9 +1,10 @@
@ vim:filetype=armasm
.global clut_line @ void *dest, void *src, unsigned short *pal, int pixels_mask
@ FIXME: handle dual issue
.global clut_line2x2 @ void *dest, void *src, unsigned short *pal, int pixels_mask
clut_line:
clut_line2x2:
stmfd sp!, {r4-r11,lr}
and lr, r3, #0xff0000
@ -12,7 +13,7 @@ clut_line:
and r3, r3, #0xff @ counter
add r11,r0, #800*2
clut_line_loop:
clut_line_2x2_loop:
ldmia r1!, {r10,r12}
and r4, lr, r10, lsl #1
@ -50,7 +51,58 @@ clut_line_loop:
stmia r0!, {r4-r10,r12}
stmia r11!,{r4-r10,r12}
bne clut_line_loop
bne clut_line_2x2_loop
ldmfd sp!, {r4-r11,pc}
@ 00 01 11 22 23 33
@ r4 r5 r6 r7 r8 r9
.macro do_4_to_12 rs
and r4, lr, \rs, lsl #1
and r6, lr, \rs, lsr #7
and r7, lr, \rs, lsr #15
and r9, lr, \rs, lsr #23
ldrh r4, [r2, r4]
ldrh r6, [r2, r6]
ldrh r7, [r2, r7]
ldrh r9, [r2, r9]
orr r5, r4, r6, lsl #16
orr r4, r4, r4, lsl #16
orr r6, r6, r6, lsl #16
orr r8, r7, r9, lsl #16
orr r7, r7, r7, lsl #16
orr r9, r9, r9, lsl #16
.endm
.global clut_line3x2 @ void *dest, void *src, unsigned short *pal, int pixels_mask
clut_line3x2:
stmfd sp!, {r4-r11,lr}
and lr, r3, #0xff0000
mov lr, lr, lsr #15 @ mask
mov r3, r3, lsr #3
and r3, r3, #0xff @ counter
add r11,r0, #800*2
clut_line3x2_loop:
ldmia r1!, {r10,r12}
do_4_to_12 r10
stmia r0!, {r4-r9}
stmia r11!,{r4-r9}
do_4_to_12 r12
subs r3, r3, #1
stmia r0!, {r4-r9}
stmia r11!,{r4-r9}
bne clut_line3x2_loop
ldmfd sp!, {r4-r11,pc}