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Do multiple loads at once

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This commit is contained in:
Gwilym Inzani 2023-06-16 22:19:56 +01:00
parent 9e08303e62
commit 334e70c664
1 changed files with 6 additions and 5 deletions
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11
agb/src/sound/mixer/mixer.s
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@ -131,13 +131,14 @@ agb_arm_func agb_rs__mixer_add_stereo
.endm
1:
.rept 4
ldr r4, [r1] @ read the current value
ldmia r1, {{r9-r12}} @ read the current values
add_stereo_sample r4
add_stereo_sample r9
add_stereo_sample r10
add_stereo_sample r11
add_stereo_sample r12
str r4, [r1], #4 @ store the new value, and increment the pointer
.endr
stmia r1!, {{r9-r12}} @ store the new value, and increment the pointer
subs r8, r8, #4 @ loop counter
bne 1b @ jump back if we're done with the loop