mirror of https://github.com/PrimeDecomp/prime.git
Fully match dvdlow
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6a83d09d43
commit
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@ -217,12 +217,10 @@ static void Read(void* addr, u32 length, u32 offset, DVDLowCallback callback) {
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}
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}
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BOOL AudioBufferOn() { return DVDGetCurrentDiskID()->streaming ? TRUE : FALSE; }
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BOOL HitCache(DVDBuffer* cur, DVDBuffer* prev) {
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u32 uVar1 = (prev->offset + prev->length - 1) >> 15;
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u32 uVar2 = (cur->offset >> 15);
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u32 iVar3 = AudioBufferOn() ? 5 : 15;
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u32 iVar3 = (DVDGetCurrentDiskID()->streaming ? TRUE : FALSE) ? 5 : 15;
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if ((uVar2 > uVar1 - 2) || (uVar2 < uVar1 + iVar3 + 3)) {
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return TRUE;
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@ -269,8 +267,7 @@ static void WaitBeforeRead(void* addr, u32 length, u32 offset, DVDLowCallback ca
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OSSetAlarm(&AlarmForWA, timeout, AlarmHandler);
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}
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#ifndef NONMATCHING
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/* Code is correct, but the stack is the wrong size */
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BOOL DVDLowRead(void* addr, u32 length, u32 offset, DVDLowCallback callback) {
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OSTime diff;
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u32 prev;
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@ -306,197 +303,6 @@ BOOL DVDLowRead(void* addr, u32 length, u32 offset, DVDLowCallback callback) {
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}
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return TRUE;
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}
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#else
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/* clang-format off */
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#pragma push
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#pragma optimization_level 0
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#pragma optimizewithasm off
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asm BOOL DVDLowRead(void* addr, u32 length, u32 offset, DVDLowCallback callback) {
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nofralloc
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mflr r0
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lis r7, 0xCC006000@ha
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stw r0, 4(r1)
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stwu r1, -0x40(r1)
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stmw r22, 0x18(r1)
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addi r25, r4, 0
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addi r4, r7, 0xCC006000@l
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lis r7, CommandList@ha
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addi r31, r7, CommandList@l
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addi r24, r3, 0
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addi r26, r5, 0
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addi r30, r31, 0xcc
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mr r27, r6
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stw r25, 0x18(r4)
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stw r24, 0xc4(r31)
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stw r25, 0xc8(r31)
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stw r26, 0xcc(r31)
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lwz r0, WorkAroundType
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cmplwi r0, 0
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bne lbl_80370AC0
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li r0, -1
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stw r0, 0(r31)
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li r0, 0
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addi r3, r24, 0
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stw r0, NextCommandNumber
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addi r4, r25, 0
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addi r5, r26, 0
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addi r6, r27, 0
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bl Read
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b lbl_80370CC8
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lbl_80370AC0:
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lwz r0, WorkAroundType
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cmplwi r0, 1
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bne lbl_80370CC8
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lwz r0, FirstRead
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cmpwi r0, 0
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beq lbl_80370AF0
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addi r3, r24, 0
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addi r4, r25, 0
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addi r5, r26, 0
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addi r6, r27, 0
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bl SeekTwiceBeforeRead
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b lbl_80370CC8
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lbl_80370AF0:
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addi r29, r31, 0xbc
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lwz r0, 0(r30)
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addi r28, r31, 0xc0
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lwz r3, 0xbc(r31)
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lwz r4, 0xc0(r31)
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srwi r23, r0, 0xf
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addi r0, r3, -1
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add r0, r4, r0
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srwi r22, r0, 0xf
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bl DVDGetCurrentDiskID
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lbz r0, 8(r3)
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cmplwi r0, 0
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beq lbl_80370B2C
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li r0, 1
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b lbl_80370B30
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lbl_80370B2C:
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li r0, 0
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lbl_80370B30:
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cmpwi r0, 0
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beq lbl_80370B40
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li r3, 5
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b lbl_80370B44
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lbl_80370B40:
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li r3, 0xf
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lbl_80370B44:
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addi r0, r22, -2
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cmplw r23, r0
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bgt lbl_80370B60
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addi r0, r3, 3
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add r0, r22, r0
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cmplw r23, r0
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bge lbl_80370B68
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lbl_80370B60:
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li r0, 1
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b lbl_80370B6C
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lbl_80370B68:
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li r0, 0
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lbl_80370B6C:
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cmpwi r0, 0
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bne lbl_80370B9C
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li r0, -1
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stw r0, 0(r31)
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li r0, 0
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addi r3, r24, 0
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stw r0, NextCommandNumber
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addi r4, r25, 0
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addi r5, r26, 0
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addi r6, r27, 0
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bl Read
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b lbl_80370CC8
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lbl_80370B9C:
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lwz r3, 0(r29)
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lwz r4, 0(r28)
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addi r3, r3, -1
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lwz r0, 0(r30)
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add r3, r4, r3
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srwi r3, r3, 0xf
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srwi r4, r0, 0xf
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cmplw r3, r4
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beq lbl_80370BCC
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addi r0, r3, 1
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cmplw r0, r4
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bne lbl_80370CB4
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lbl_80370BCC:
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bl __OSGetSystemTime
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lis r5, OS_BUS_CLOCK@ha
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lwz r8, LastReadFinished
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lwz r0, OS_BUS_CLOCK@l(r5)
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lis r5, 0x10624DD3@ha
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lwz r9, LastReadFinished+4
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li r6, 0
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srwi r7, r0, 2
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addi r0, r5, 0x10624DD3@l
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mulhwu r0, r0, r7
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srwi r0, r0, 6
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subfc r9, r9, r4
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subfe r8, r8, r3
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mulli r5, r0, 5
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xoris r4, r6, 0x8000
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xoris r3, r8, 0x8000
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subfc r0, r9, r5
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subfe r3, r3, r4
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subfe r3, r4, r4
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neg. r3, r3
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beq lbl_80370C44
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li r0, -1
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stw r0, 0(r31)
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addi r3, r24, 0
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addi r4, r25, 0
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stw r6, NextCommandNumber
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addi r5, r26, 0
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addi r6, r27, 0
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bl Read
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b lbl_80370CC8
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lbl_80370C44:
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li r0, 1
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stw r0, 0(r31)
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lis r3, 0x431BDE83@ha
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addi r0, r3, 0x431BDE83@l
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stw r24, 4(r31)
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mulhwu r0, r0, r7
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stw r25, 8(r31)
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stw r26, 0xc(r31)
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srwi r0, r0, 0xf
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mulli r3, r0, 0x1f4
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stw r27, 0x10(r31)
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li r0, -1
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stw r0, 0x14(r31)
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subfc r5, r9, r5
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subfe r4, r8, r6
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srwi r0, r3, 3
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stw r6, NextCommandNumber
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addc r23, r5, r0
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adde r22, r4, r6
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addi r3, r31, 0x40
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bl OSCreateAlarm
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lis r3, AlarmHandler@ha
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addi r7, r3, AlarmHandler@l
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addi r6, r23, 0
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addi r5, r22, 0
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addi r3, r31, 0x40
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bl OSSetAlarm
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b lbl_80370CC8
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lbl_80370CB4:
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addi r3, r24, 0
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addi r4, r25, 0
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addi r5, r26, 0
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addi r6, r27, 0
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bl SeekTwiceBeforeRead
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lbl_80370CC8:
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lmw r22, 0x18(r1)
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li r3, 1
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lwz r0, 0x44(r1)
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addi r1, r1, 0x40
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mtlr r0
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blr
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}
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#pragma pop
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/* clang-format on */
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#endif
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BOOL DVDLowSeek(u32 offset, DVDLowCallback callback) {
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ASSERTMSG(offset & 3, "DVDLowSeek(): offset must be a multiple of 4.");
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