diff options
Diffstat (limited to 'asm/m4a.s')
| -rw-r--r-- | asm/m4a.s | 216 |
1 files changed, 109 insertions, 107 deletions
@@ -1,5 +1,6 @@ - .include "constants/gba_constants.inc" .include "asm/macros.inc" + .include "constants/gba_constants.inc" + .include "constants/m4a_constants.inc" .syntax unified @@ -18,16 +19,16 @@ _080AE268: thumb_func_start SoundMain SoundMain: - ldr r0, _080AE2E0 + ldr r0, lt_SOUND_INFO_PTR ldr r0, [r0] - ldr r2, _080AE2E4 - ldr r3, [r0] + ldr r2, lt_ID_NUMBER + ldr r3, [r0, o_SoundInfo_ident] cmp r2, r3 - beq _080AE282 - bx lr -_080AE282: - adds r3, 0x1 - str r3, [r0] + beq SoundMain_1 + bx lr @ Exit the function if ident doesn't match ID_NUMBER. +SoundMain_1: + adds r3, 1 + str r3, [r0, o_SoundInfo_ident] push {r4-r7,lr} mov r1, r8 mov r2, r9 @@ -35,65 +36,66 @@ _080AE282: mov r4, r11 push {r0-r4} sub sp, 0x18 - ldrb r1, [r0, 0xC] - cmp r1, 0 - beq _080AE2A6 - ldr r2, _080AE2EC + ldrb r1, [r0, o_SoundInfo_maxLines] + cmp r1, 0 @ if maxLines is 0, there is no maximum + beq SoundMain_3 + ldr r2, lt_REG_VCOUNT ldrb r2, [r2] - cmp r2, 0xA0 - bcs _080AE2A4 - adds r2, 0xE4 -_080AE2A4: + cmp r2, VCOUNT_VBLANK + bhs SoundMain_2 + adds r2, TOTAL_SCANLINES +SoundMain_2: adds r1, r2 -_080AE2A6: +SoundMain_3: str r1, [sp, 0x14] - ldr r3, [r0, 0x20] + ldr r3, [r0, o_SoundInfo_func] cmp r3, 0 - beq _080AE2B6 - ldr r0, [r0, 0x24] + beq SoundMain_4 + ldr r0, [r0, o_SoundInfo_intp] bl call_r3 ldr r0, [sp, 0x18] -_080AE2B6: - ldr r3, [r0, 0x28] +SoundMain_4: + ldr r3, [r0, o_SoundInfo_CgbSound] bl call_r3 ldr r0, [sp, 0x18] - ldr r3, [r0, 0x10] + ldr r3, [r0, o_SoundInfo_pcmSamplesPerVBlank] mov r8, r3 - ldr r5, _080AE2F0 + ldr r5, lt_o_SoundInfo_pcmBuffer adds r5, r0 - ldrb r4, [r0, 0x4] - subs r7, r4, 0x1 - bls _080AE2D6 - ldrb r1, [r0, 0xB] + ldrb r4, [r0, o_SoundInfo_pcmDmaCounter] + subs r7, r4, 1 + bls SoundMain_5 + ldrb r1, [r0, o_SoundInfo_pcmDmaPeriod] subs r1, r7 mov r2, r8 muls r2, r1 adds r5, r2 -_080AE2D6: +SoundMain_5: str r5, [sp, 0x8] - ldr r6, _080AE2F4 - ldr r3, _080AE2E8 + ldr r6, lt_PCM_DMA_BUF_SIZE + ldr r3, lt_SoundMainRAM_Buffer bx r3 + .align 2, 0 -_080AE2E0: .4byte SOUND_INFO_PTR -_080AE2E4: .4byte 0x68736d53 -_080AE2E8: .4byte SoundMainRAM_Buffer + 1 -_080AE2EC: .4byte 0x04000006 -_080AE2F0: .4byte 0x00000350 -_080AE2F4: .4byte 0x00000630 +lt_SOUND_INFO_PTR: .word SOUND_INFO_PTR +lt_ID_NUMBER: .word ID_NUMBER +lt_SoundMainRAM_Buffer: .word SoundMainRAM_Buffer + 1 +lt_REG_VCOUNT: .word REG_VCOUNT +lt_o_SoundInfo_pcmBuffer: .word o_SoundInfo_pcmBuffer +lt_PCM_DMA_BUF_SIZE: .word PCM_DMA_BUF_SIZE thumb_func_end SoundMain - thumb_func_start sub_80AE2F8 -sub_80AE2F8: - ldrb r3, [r0, 0x5] + thumb_func_start SoundMainRAM +SoundMainRAM: + ldrb r3, [r0, o_SoundInfo_reverb] cmp r3, 0 - beq _080AE358 - adr r1, _080AE304 + beq SoundMainRAM_NoReverb + adr r1, SoundMainRAM_Reverb bx r1 .arm -_080AE304: +SoundMainRAM_Reverb: cmp r4, 0x2 - addeq r7, r0, 0x350 + addeq r7, r0, o_SoundInfo_pcmBuffer addne r7, r5, r8 mov r4, r8 _080AE314: @@ -115,22 +117,22 @@ _080AE314: add r0, pc, 0x2F bx r0 .thumb -_080AE358: +SoundMainRAM_NoReverb: movs r0, 0 mov r1, r8 adds r6, r5 lsrs r1, 3 - bcc _080AE366 + bcc SoundMainRAM_NoReverb_Ok stm r5!, {r0} stm r6!, {r0} -_080AE366: +SoundMainRAM_NoReverb_Ok: lsrs r1, 1 - bcc _080AE372 + bcc SoundMainRAM_NoReverb_Loop stm r5!, {r0} stm r6!, {r0} stm r5!, {r0} stm r6!, {r0} -_080AE372: +SoundMainRAM_NoReverb_Loop: stm r5!, {r0} stm r6!, {r0} stm r5!, {r0} @@ -140,31 +142,33 @@ _080AE372: stm r5!, {r0} stm r6!, {r0} subs r1, 0x1 - bgt _080AE372 + bgt SoundMainRAM_NoReverb_Loop +_080AE386: ldr r4, [sp, 0x18] - ldr r0, [r4, 0x18] + ldr r0, [r4, o_SoundInfo_divFreq] mov r12, r0 - ldrb r0, [r4, 0x6] - adds r4, 0x50 -_080AE390: + ldrb r0, [r4, o_SoundInfo_maxChans] + adds r4, o_SoundInfo_chans +SoundMainRAM_ChanLoop: str r0, [sp, 0x4] - ldr r3, [r4, 0x24] + ldr r3, [r4, o_SoundChannel_wav] ldr r0, [sp, 0x14] cmp r0, 0 beq _080AE3B0 - ldr r1, _080AE3AC + ldr r1, =REG_VCOUNT ldrb r1, [r1] - cmp r1, 0xA0 - bcs _080AE3A4 - adds r1, 0xE4 + cmp r1, VCOUNT_VBLANK + bhs _080AE3A4 + adds r1, TOTAL_SCANLINES _080AE3A4: cmp r1, r0 bcc _080AE3B0 b _080AE682 - .align 2, 0 -_080AE3AC: .4byte 0x04000006 + + .pool + _080AE3B0: - ldrb r6, [r4] + ldrb r6, [r4, o_SoundChannel_status] movs r0, 0xC7 tst r0, r6 bne _080AE3BA @@ -177,96 +181,96 @@ _080AE3BA: tst r0, r6 bne _080AE3FA movs r6, 0x3 - strb r6, [r4] + strb r6, [r4, o_SoundChannel_status] adds r0, r3, 0 adds r0, 0x10 - str r0, [r4, 0x28] + str r0, [r4, o_SoundChannel_cp] ldr r0, [r3, 0xC] - str r0, [r4, 0x18] + str r0, [r4, o_SoundChannel_ct] movs r5, 0 - strb r5, [r4, 0x9] - str r5, [r4, 0x1C] + strb r5, [r4, o_SoundChannel_ev] + str r5, [r4, o_SoundChannel_fw] ldrb r2, [r3, 0x3] movs r0, 0xC0 tst r0, r2 beq _080AE442 movs r0, 0x10 orrs r6, r0 - strb r6, [r4] + strb r6, [r4, o_SoundChannel_status] b _080AE442 _080AE3EA: - ldrb r5, [r4, 0x9] + ldrb r5, [r4, o_SoundChannel_ev] movs r0, 0x4 tst r0, r6 beq _080AE400 - ldrb r0, [r4, 0xD] + ldrb r0, [r4, o_SoundChannel_iel] subs r0, 0x1 - strb r0, [r4, 0xD] + strb r0, [r4, o_SoundChannel_iel] bhi _080AE450 _080AE3FA: movs r0, 0 - strb r0, [r4] + strb r0, [r4, o_SoundChannel_status] b _080AE678 _080AE400: movs r0, 0x40 tst r0, r6 beq _080AE420 - ldrb r0, [r4, 0x7] + ldrb r0, [r4, o_SoundChannel_release] muls r5, r0 lsrs r5, 8 - ldrb r0, [r4, 0xC] + ldrb r0, [r4, o_SoundChannel_iev] cmp r5, r0 bhi _080AE450 _080AE412: - ldrb r5, [r4, 0xC] + ldrb r5, [r4, o_SoundChannel_iev] cmp r5, 0 beq _080AE3FA movs r0, 0x4 orrs r6, r0 - strb r6, [r4] + strb r6, [r4, o_SoundChannel_status] b _080AE450 _080AE420: movs r2, 0x3 ands r2, r6 cmp r2, 0x2 bne _080AE43E - ldrb r0, [r4, 0x5] + ldrb r0, [r4, o_SoundChannel_decay] muls r5, r0 lsrs r5, 8 - ldrb r0, [r4, 0x6] + ldrb r0, [r4, o_SoundChannel_sustain] cmp r5, r0 bhi _080AE450 adds r5, r0, 0 beq _080AE412 subs r6, 0x1 - strb r6, [r4] + strb r6, [r4, o_SoundChannel_status] b _080AE450 _080AE43E: cmp r2, 0x3 bne _080AE450 _080AE442: - ldrb r0, [r4, 0x4] + ldrb r0, [r4, o_SoundChannel_attack] adds r5, r0 cmp r5, 0xFF bcc _080AE450 movs r5, 0xFF subs r6, 0x1 - strb r6, [r4] + strb r6, [r4, o_SoundChannel_status] _080AE450: - strb r5, [r4, 0x9] + strb r5, [r4, o_SoundChannel_ev] ldr r0, [sp, 0x18] - ldrb r0, [r0, 0x7] + ldrb r0, [r0, o_SoundChannel_release] adds r0, 0x1 muls r0, r5 lsrs r5, r0, 4 - ldrb r0, [r4, 0x2] + ldrb r0, [r4, o_SoundChannel_rightVolume] muls r0, r5 lsrs r0, 8 - strb r0, [r4, 0xA] - ldrb r0, [r4, 0x3] + strb r0, [r4, o_SoundChannel_er] + ldrb r0, [r4, o_SoundChannel_leftVolume] muls r0, r5 lsrs r0, 8 - strb r0, [r4, 0xB] + strb r0, [r4, o_SoundChannel_el] movs r0, 0x10 ands r0, r6 str r0, [sp, 0x10] @@ -281,18 +285,18 @@ _080AE450: str r0, [sp, 0x10] _080AE484: ldr r5, [sp, 0x8] - ldr r2, [r4, 0x18] - ldr r3, [r4, 0x28] + ldr r2, [r4, o_SoundChannel_ct] + ldr r3, [r4, o_SoundChannel_cp] adr r0, _080AE490 bx r0 .arm _080AE490: str r8, [sp] - ldrb r10, [r4, 0xA] - ldrb r11, [r4, 0xB] + ldrb r10, [r4, o_SoundChannel_er] + ldrb r11, [r4, o_SoundChannel_el] mov r10, r10, lsl 16 mov r11, r11, lsl 16 - ldrb r0, [r4, 0x1] + ldrb r0, [r4, o_SoundChannel_type] tst r0, 0x8 beq _080AE5D0 _080AE4B0: @@ -368,7 +372,7 @@ _080AE598: ldrne r3, [sp, 0xC] bne _080AE54C _080AE5A8: - strb r2, [r4] + strb r2, [r4, o_SoundChannel_status] mov r0, r5, lsr 30 bic r5, r5, 0xC0000000 rsb r0, r0, 0x3 @@ -380,8 +384,8 @@ _080AE5A8: b _080AE66C _080AE5D0: stmdb sp!, {r4,r12} - ldr lr, [r4, 0x1C] - ldr r1, [r4, 0x20] + ldr lr, [r4, o_SoundChannel_fw] + ldr r1, [r4, o_SoundChannel_freq] mul r4, r12, r1 ldrsb r0, [r3] ldrsb r1, [r3, 0x1]! @@ -419,10 +423,10 @@ _080AE640: bgt _080AE5EC sub r3, r3, 0x1 ldmia sp!, {r4,r12} - str lr, [r4, 0x1C] + str lr, [r4, o_SoundChannel_fw] _080AE664: - str r2, [r4, 0x18] - str r3, [r4, 0x28] + str r2, [r4, o_SoundChannel_ct] + str r3, [r4, o_SoundChannel_cp] _080AE66C: ldr r8, [sp] add r0, pc, 0x1 @@ -432,11 +436,11 @@ _080AE678: ldr r0, [sp, 0x4] subs r0, 0x1 ble _080AE682 - adds r4, 0x40 - b _080AE390 + adds r4, SoundChannel_size + b SoundMainRAM_ChanLoop _080AE682: ldr r0, [sp, 0x18] - ldr r3, _080AE698 + ldr r3, =ID_NUMBER str r3, [r0] add sp, 0x1C pop {r0-r7} @@ -448,10 +452,8 @@ _080AE682: call_r3: bx r3 - - .align 2, 0 -_080AE698: .4byte 0x68736D53 - thumb_func_end sub_80AE2F8 + .pool + thumb_func_end SoundMainRAM thumb_func_start sub_80AE69C sub_80AE69C: @@ -1770,7 +1772,7 @@ _080AEF72: pop {r0} bx r0 .align 2, 0 -_080AEF78: .4byte sub_80AE2F8 +_080AEF78: .4byte SoundMainRAM _080AEF7C: .4byte SoundMainRAM_Buffer _080AEF80: .4byte 0x04000100 _080AEF84: .4byte gUnknown_2039ED0 |