embed build date to one of debug screens
[picodrive.git] / platform / pandora / asm_utils.s
CommitLineData
3bb7bd19 1@ vim:filetype=armasm
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3
4.global clut_line @ void *dest, void *src, unsigned short *pal, int pixels_mask
5
6clut_line:
7 stmfd sp!, {r4-r11,lr}
8
9 and lr, r3, #0xff0000
10 mov lr, lr, lsr #15 @ mask
11 mov r3, r3, lsr #3
12 and r3, r3, #0xff @ counter
13 add r11,r0, #800*2
14
15clut_line_loop:
16 ldmia r1!, {r10,r12}
17
18 and r4, lr, r10, lsl #1
19 ldrh r4, [r2, r4]
20 and r5, lr, r10, lsr #7
21 ldrh r5, [r2, r5]
22 orr r4, r4, r4, lsl #16
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24 and r6, lr, r10, lsr #15
25 ldrh r6, [r2, r6]
26 orr r5, r5, r5, lsl #16
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28 and r7, lr, r10, lsr #23
29 ldrh r7, [r2, r7]
30 orr r6, r6, r6, lsl #16
31
32 and r8, lr, r12, lsl #1
33 ldrh r8, [r2, r8]
34 orr r7, r7, r7, lsl #16
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36 and r9, lr, r12, lsr #7
37 ldrh r9, [r2, r9]
38 orr r8, r8, r8, lsl #16
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40 and r10,lr, r12, lsr #15
41 ldrh r10,[r2, r10]
42 orr r9, r9, r9, lsl #16
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44 and r12,lr, r12, lsr #23
45 ldrh r12,[r2, r12]
46 orr r10,r10,r10, lsl #16
47
48 subs r3, r3, #1
49 orr r12,r12,r12, lsl #16
50
51 stmia r0!, {r4-r10,r12}
52 stmia r11!,{r4-r10,r12}
53 bne clut_line_loop
54
55 ldmfd sp!, {r4-r11,pc}
56