diff options
Diffstat (limited to 'arm7/asm/MI_dma.s')
| -rw-r--r-- | arm7/asm/MI_dma.s | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arm7/asm/MI_dma.s b/arm7/asm/MI_dma.s new file mode 100644 index 00000000..8cbc8cb5 --- /dev/null +++ b/arm7/asm/MI_dma.s @@ -0,0 +1,74 @@ + .include "asm/macros.inc" + .include "global.inc" + + .text + + arm_func_start MI_StopDma +MI_StopDma: ; 0x037FB20C + stmdb sp!, {r4, lr} + mov r4, r0 + bl OS_DisableInterrupts + mov r1, #6 + mul r1, r4, r1 + add r1, r1, #5 + mov r1, r1, lsl #1 + add r1, r1, #67108864 ; 0x4000000 + ldrh r2, [r1, #176] ; 0xb0 + bic r2, r2, #12800 ; 0x3200 + strh r2, [r1, #176] ; 0xb0 + ldrh r2, [r1, #176] ; 0xb0 + bic r2, r2, #32768 ; 0x8000 + strh r2, [r1, #176] ; 0xb0 + ldrh r2, [r1, #176] ; 0xb0 + ldrh r1, [r1, #176] ; 0xb0 + cmp r4, #0 + bne _037FB27C + mov r1, #12 + mul r3, r4, r1 + ldr r1, _037FB288 ; =0x040000B0 + add r4, r3, r1 + mov r2, #0 + add r1, r3, #67108864 ; 0x4000000 + str r2, [r1, #176] ; 0xb0 + str r2, [r4, #4] + ldr r1, _037FB28C ; =0x81400001 + str r1, [r4, #8] +_037FB27C: + bl OS_RestoreInterrupts + ldmia sp!, {r4, lr} + bx lr +_037FB288: .word 0x040000B0 +_037FB28C: .word 0x81400001 + + arm_func_start MI_WaitDma +MI_WaitDma: ; 0x037FB290 + stmdb sp!, {r4, lr} + mov r4, r0 + bl OS_DisableInterrupts + mov r1, #3 + mul r1, r4, r1 + add r2, r1, #2 + ldr r1, _037FB2F8 ; =0x040000B0 + add r2, r1, r2, lsl #2 +_037FB2B0: + ldr r1, [r2] + ands r1, r1, #-2147483648 ; 0x80000000 + bne _037FB2B0 + cmp r4, #0 + bne _037FB2EC + mov r1, #12 + mul r3, r4, r1 + ldr r1, _037FB2F8 ; =0x040000B0 + add r4, r3, r1 + mov r2, #0 + add r1, r3, #67108864 ; 0x4000000 + str r2, [r1, #176] ; 0xb0 + str r2, [r4, #4] + ldr r1, _037FB2FC ; =0x81400001 + str r1, [r4, #8] +_037FB2EC: + bl OS_RestoreInterrupts + ldmia sp!, {r4, lr} + bx lr +_037FB2F8: .word 0x040000B0 +_037FB2FC: .word 0x81400001 |