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| author | Toad King | 2012-06-14 03:21:06 -0400 |
|---|---|---|
| committer | Toad King | 2012-06-14 03:21:06 -0400 |
| commit | 6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119 (patch) | |
| tree | 885cf7f507139b795ba7b2a6fb829dc044da39dd /src/giz_kgsdkasm.s | |
| download | snes9x2002-6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119.tar.gz snes9x2002-6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119.tar.bz2 snes9x2002-6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119.zip | |
initial pocketsnes commit
Diffstat (limited to 'src/giz_kgsdkasm.s')
| -rw-r--r-- | src/giz_kgsdkasm.s | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/giz_kgsdkasm.s b/src/giz_kgsdkasm.s new file mode 100644 index 0000000..3402af1 --- /dev/null +++ b/src/giz_kgsdkasm.s @@ -0,0 +1,107 @@ +
+ .global BlitBufferToScreen
+
+BlitBufferToScreen:
+ ;@ r0 - Buffer to copy from
+ ;@ r1 - Buffer to copy to
+ stmfd sp!,{r4-r12,lr}
+ mov r12,#240>>1
+1:
+ ;@ first line is perfectly aligned
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+ ldmia r0!,{r2-r11}
+ stmia r1!,{r2-r11}
+
+ add r1,r1,#2
+
+ ldmia r0!,{r2-r6}
+ strh r2,[r1],#2
+ mov lr,#15
+2:
+ mov r2,r2,lsr#16
+ orr r2,r2,r3,lsl#16
+ mov r3,r3,lsr#16
+ orr r3,r3,r4,lsl#16
+ mov r4,r4,lsr#16
+ orr r4,r4,r5,lsl#16
+ mov r5,r5,lsr#16
+ orr r5,r5,r6,lsl#16
+ mov r6,r6,lsr#16
+ ldmia r0!,{r7-r11}
+ orr r6,r6,r7,lsl#16
+ stmia r1!,{r2-r6}
+ mov r7,r7,lsr#16
+ orr r7,r7,r8,lsl#16
+ mov r8,r8,lsr#16
+ orr r8,r8,r9,lsl#16
+ mov r9,r9,lsr#16
+ orr r9,r9,r10,lsl#16
+ mov r10,r10,lsr#16
+ orr r10,r10,r11,lsl#16
+ mov r11,r11,lsr#16
+ ldmia r0!,{r2-r6}
+ orr r11,r11,r2,lsl#16
+ stmia r1!,{r7-r11}
+ subs lr,lr,#1
+ bne 2b
+
+ mov r2,r2,lsr#16
+ orr r2,r2,r3,lsl#16
+ mov r3,r3,lsr#16
+ orr r3,r3,r4,lsl#16
+ mov r4,r4,lsr#16
+ orr r4,r4,r5,lsl#16
+ mov r5,r5,lsr#16
+ orr r5,r5,r6,lsl#16
+ mov r6,r6,lsr#16
+ ldmia r0!,{r7-r11}
+ orr r6,r6,r7,lsl#16
+ stmia r1!,{r2-r6}
+ mov r7,r7,lsr#16
+ orr r7,r7,r8,lsl#16
+ mov r8,r8,lsr#16
+ orr r8,r8,r9,lsl#16
+ mov r9,r9,lsr#16
+ orr r9,r9,r10,lsl#16
+ mov r10,r10,lsr#16
+ orr r10,r10,r11,lsl#16
+ mov r11,r11,lsr#16
+ stmia r1!,{r7-r11}
+
+ subs r12,r12,#1
+ bne 1b
+
+ ldmfd sp!,{r4-r12,pc}
+
+
+
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