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Decompile resetproc

This commit is contained in:
Ryan Dwyer 2021-04-01 15:45:50 +10:00
parent d9dea8b3d8
commit b56e731080
5 changed files with 64 additions and 201 deletions
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2
src/include/data.h
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@ -25,7 +25,7 @@ extern u32 var8005ce98;
extern u32 var8005ce9c;
extern OSMesg var8005cea8;
extern u32 var8005cec8;
extern s8 var8005ced0;
extern s8 g_Resetting;
extern OSDevMgr __osViDevMgr;
extern u32 var8005cefc;
extern OSDevMgr __osPiDevMgr;

2
src/include/lib/joy.h
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@ -47,7 +47,7 @@ void joy000150e8(s32 line, char *file);
void joy00015144(s32 line, char *file);
#endif
void joy0001519c(void);
void joyReset(void);
void joy000152d0(s8 playernum, s32 *arg1, s32 *arg2);
void joy000153c4(s8 arg0, s32 arg1);
s32 joy000155b4(s8 index);

2
src/lib/joy.c
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@ -1303,7 +1303,7 @@ glabel func00016154nb
);
#endif
void joy0001519c(void)
void joyReset(void)
{
s32 i;

251
src/lib/reset.c
View File

@ -17,205 +17,68 @@ u32 var8008faa0;
u32 var8008faa4;
OSMesgQueue g_ResetMesgQueue;
OSThread g_ResetThread;
u8 g_ResetStack[STACKSIZE_RESET+1];
u32 var8008fdf4;
u8 g_ResetStack[STACKSIZE_RESET];
s8 var8005ced0 = 0;
s8 g_Resetting = false;
#if VERSION >= VERSION_PAL_FINAL
GLOBAL_ASM(
glabel resetproc
/* 2df0: 27bdffd0 */ addiu $sp,$sp,-48
/* 2df4: afa40030 */ sw $a0,0x30($sp)
/* 2df8: afbf0014 */ sw $ra,0x14($sp)
/* 2dfc: 3c048009 */ lui $a0,0x8009
/* 2e00: afa0002c */ sw $zero,0x2c($sp)
/* 2e04: 2484fff8 */ addiu $a0,$a0,-8
/* 2e08: 27a5002c */ addiu $a1,$sp,0x2c
/* 2e0c: 0c011ffc */ jal osRecvMesg
/* 2e10: 24060001 */ li $a2,0x1
/* 2e14: 240e0001 */ li $t6,0x1
/* 2e18: 3c018006 */ lui $at,0x8006
/* 2e1c: 0c002413 */ jal amgrStopThread
/* 2e20: a02ecb80 */ sb $t6,-0x3480($at)
/* 2e24: 3c048009 */ lui $a0,0x8009
/* 2e28: 0c011f1c */ jal osStopThread
/* 2e2c: 2484dc20 */ addiu $a0,$a0,-9184
/* 2e30: 00002025 */ move $a0,$zero
/* 2e34: 0c011f4c */ jal osSetThreadPri
/* 2e38: 2405000b */ li $a1,0xb
/* 2e3c: 3c028006 */ lui $v0,0x8006
/* 2e40: 2442f3c0 */ addiu $v0,$v0,-3136
/* 2e44: 24030400 */ li $v1,0x400
/* 2e48: 3c048006 */ lui $a0,0x8006
/* 2e4c: ac43052c */ sw $v1,0x52c($v0)
/* 2e50: ac430540 */ sw $v1,0x540($v0)
/* 2e54: 0c012194 */ jal osViSetMode
/* 2e58: 2484f8c0 */ addiu $a0,$a0,-1856
/* 2e5c: 0c012178 */ jal osViBlack
/* 2e60: 24040001 */ li $a0,0x1
/* 2e64: 0c012288 */ jal osGetTime
/* 2e68: 00000000 */ nop
/* 2e6c: 3c018009 */ lui $at,0x8009
/* 2e70: ac220340 */ sw $v0,0x340($at)
/* 2e74: 0c012288 */ jal osGetTime
/* 2e78: ac230344 */ sw $v1,0x344($at)
/* 2e7c: 3c198009 */ lui $t9,0x8009
/* 2e80: 8f390344 */ lw $t9,0x344($t9)
/* 2e84: 3c188009 */ lui $t8,0x8009
/* 2e88: 3c010022 */ lui $at,0x22
/* 2e8c: 8f180340 */ lw $t8,0x340($t8)
/* 2e90: 3421add7 */ ori $at,$at,0xadd7
/* 2e94: 03214821 */ addu $t1,$t9,$at
/* 2e98: 0121082b */ sltu $at,$t1,$at
/* 2e9c: 03014021 */ addu $t0,$t8,$at
/* 2ea0: 25080000 */ addiu $t0,$t0,0x0
/* 2ea4: 0102082b */ sltu $at,$t0,$v0
/* 2ea8: 14200019 */ bnez $at,.PF00002f10
/* 2eac: 0048082b */ sltu $at,$v0,$t0
/* 2eb0: 14200003 */ bnez $at,.PF00002ec0
/* 2eb4: 0069082b */ sltu $at,$v1,$t1
/* 2eb8: 10200015 */ beqz $at,.PF00002f10
/* 2ebc: 00000000 */ nop
.PF00002ec0:
/* 2ec0: 0c012288 */ jal osGetTime
/* 2ec4: 00000000 */ nop
/* 2ec8: 3c0b8009 */ lui $t3,0x8009
/* 2ecc: 8d6b0344 */ lw $t3,0x344($t3)
/* 2ed0: 3c0a8009 */ lui $t2,0x8009
/* 2ed4: 3c010022 */ lui $at,0x22
/* 2ed8: 8d4a0340 */ lw $t2,0x340($t2)
/* 2edc: 3421add7 */ ori $at,$at,0xadd7
/* 2ee0: 01616821 */ addu $t5,$t3,$at
/* 2ee4: 01a1082b */ sltu $at,$t5,$at
/* 2ee8: 01416021 */ addu $t4,$t2,$at
/* 2eec: 258c0000 */ addiu $t4,$t4,0x0
/* 2ef0: 004c082b */ sltu $at,$v0,$t4
/* 2ef4: 1420fff2 */ bnez $at,.PF00002ec0
/* 2ef8: 00000000 */ nop
/* 2efc: 0182082b */ sltu $at,$t4,$v0
/* 2f00: 14200003 */ bnez $at,.PF00002f10
/* 2f04: 006d082b */ sltu $at,$v1,$t5
/* 2f08: 1420ffed */ bnez $at,.PF00002ec0
/* 2f0c: 00000000 */ nop
.PF00002f10:
/* 2f10: 0c0053c9 */ jal joy0001519c
/* 2f14: 00000000 */ nop
.PF00002f18:
/* 2f18: 1000ffff */ b .PF00002f18
/* 2f1c: 00000000 */ nop
/* 2f20: 00000000 */ nop
/* 2f24: 00000000 */ nop
/* 2f28: 00000000 */ nop
/* 2f2c: 00000000 */ nop
/* 2f30: 8fbf0014 */ lw $ra,0x14($sp)
/* 2f34: 27bd0030 */ addiu $sp,$sp,0x30
/* 2f38: 03e00008 */ jr $ra
/* 2f3c: 00000000 */ nop
);
/**
* When the reset button is pressed, a PRENMI event occurs, followed by the NMI
* (actual reset) at least 0.5 seconds later. During PRENMI, the system must
* prepare the system for reset.
*/
void resetproc(void *data)
{
OSMesg msg = 0;
OSViMode *mode;
u32 stack[4];
static u64 prenmitime;
// Wait until a PRENMI message is received
osRecvMesg(&g_ResetMesgQueue, &msg, OS_MESG_BLOCK);
// Set a global variable so the scheduler knows the system is about to reset
// and can stop scheduling new RSP tasks
g_Resetting = true;
// Stop the audio and main threads and ensure the reset thread's priority is set correctly
amgrStopThread();
osStopThread(&g_MainThread);
osSetThreadPri(0, THREADPRI_RESET);
// Reset the Y scale for the current VI mode
#if PAL
mode = &osViModeTable[OS_VI_PAL_LAN1];
#else
GLOBAL_ASM(
glabel resetproc
/* 2e00: 27bdffd0 */ addiu $sp,$sp,-48
/* 2e04: afa40030 */ sw $a0,0x30($sp)
/* 2e08: afbf0014 */ sw $ra,0x14($sp)
/* 2e0c: 3c048009 */ lui $a0,%hi(g_ResetMesgQueue)
/* 2e10: afa0002c */ sw $zero,0x2c($sp)
/* 2e14: 2484faa8 */ addiu $a0,$a0,%lo(g_ResetMesgQueue)
/* 2e18: 27a5002c */ addiu $a1,$sp,0x2c
/* 2e1c: 0c0121bc */ jal osRecvMesg
/* 2e20: 24060001 */ addiu $a2,$zero,0x1
/* 2e24: 240e0001 */ addiu $t6,$zero,0x1
/* 2e28: 3c018006 */ lui $at,%hi(var8005ced0)
/* 2e2c: 0c002449 */ jal amgrStopThread
/* 2e30: a02eced0 */ sb $t6,%lo(var8005ced0)($at)
/* 2e34: 3c048009 */ lui $a0,%hi(g_MainThread)
/* 2e38: 0c0120dc */ jal osStopThread
/* 2e3c: 2484d6d0 */ addiu $a0,$a0,%lo(g_MainThread)
/* 2e40: 00002025 */ or $a0,$zero,$zero
/* 2e44: 0c01210c */ jal osSetThreadPri
/* 2e48: 2405000b */ addiu $a1,$zero,0xb
/* 2e4c: 3c0f8000 */ lui $t7,0x8000
/* 2e50: 8def0300 */ lw $t7,0x300($t7)
/* 2e54: 24010002 */ addiu $at,$zero,0x2
/* 2e58: 24020400 */ addiu $v0,$zero,0x400
/* 2e5c: 15e10004 */ bne $t7,$at,.L00002e70
/* 2e60: 3c048006 */ lui $a0,%hi(osViModeTable+0xa0)
/* 2e64: 3c048006 */ lui $a0,%hi(osViModeTable+0x960)
/* 2e68: 10000002 */ b .L00002e74
/* 2e6c: 24840070 */ addiu $a0,$a0,%lo(osViModeTable+0x960)
.L00002e70:
/* 2e70: 2484f7b0 */ addiu $a0,$a0,%lo(osViModeTable+0xa0)
.L00002e74:
/* 2e74: ac82002c */ sw $v0,0x2c($a0)
/* 2e78: 0c012354 */ jal osViSetMode
/* 2e7c: ac820040 */ sw $v0,0x40($a0)
/* 2e80: 0c012338 */ jal osViBlack
/* 2e84: 24040001 */ addiu $a0,$zero,0x1
/* 2e88: 0c012448 */ jal osGetTime
/* 2e8c: 00000000 */ nop
/* 2e90: 3c018009 */ lui $at,%hi(g_ResetStack+0x100)
/* 2e94: ac22fdf0 */ sw $v0,%lo(g_ResetStack+0x100)($at)
/* 2e98: 0c012448 */ jal osGetTime
/* 2e9c: ac23fdf4 */ sw $v1,-0x20c($at)
/* 2ea0: 3c198009 */ lui $t9,%hi(var8008fdf4)
/* 2ea4: 8f39fdf4 */ lw $t9,%lo(var8008fdf4)($t9)
/* 2ea8: 3c188009 */ lui $t8,%hi(g_ResetStack+0x100)
/* 2eac: 3c010022 */ lui $at,0x22
/* 2eb0: 8f18fdf0 */ lw $t8,%lo(g_ResetStack+0x100)($t8)
/* 2eb4: 3421add7 */ ori $at,$at,0xadd7
/* 2eb8: 03214821 */ addu $t1,$t9,$at
/* 2ebc: 0121082b */ sltu $at,$t1,$at
/* 2ec0: 03014021 */ addu $t0,$t8,$at
/* 2ec4: 25080000 */ addiu $t0,$t0,0x0
/* 2ec8: 0102082b */ sltu $at,$t0,$v0
/* 2ecc: 14200019 */ bnez $at,.L00002f34
/* 2ed0: 0048082b */ sltu $at,$v0,$t0
/* 2ed4: 14200003 */ bnez $at,.L00002ee4
/* 2ed8: 0069082b */ sltu $at,$v1,$t1
/* 2edc: 10200015 */ beqz $at,.L00002f34
/* 2ee0: 00000000 */ nop
.L00002ee4:
/* 2ee4: 0c012448 */ jal osGetTime
/* 2ee8: 00000000 */ nop
/* 2eec: 3c0b8009 */ lui $t3,%hi(var8008fdf4)
/* 2ef0: 8d6bfdf4 */ lw $t3,%lo(var8008fdf4)($t3)
/* 2ef4: 3c0a8009 */ lui $t2,%hi(g_ResetStack+0x100)
/* 2ef8: 3c010022 */ lui $at,0x22
/* 2efc: 8d4afdf0 */ lw $t2,%lo(g_ResetStack+0x100)($t2)
/* 2f00: 3421add7 */ ori $at,$at,0xadd7
/* 2f04: 01616821 */ addu $t5,$t3,$at
/* 2f08: 01a1082b */ sltu $at,$t5,$at
/* 2f0c: 01416021 */ addu $t4,$t2,$at
/* 2f10: 258c0000 */ addiu $t4,$t4,0x0
/* 2f14: 004c082b */ sltu $at,$v0,$t4
/* 2f18: 1420fff2 */ bnez $at,.L00002ee4
/* 2f1c: 00000000 */ nop
/* 2f20: 0182082b */ sltu $at,$t4,$v0
/* 2f24: 14200003 */ bnez $at,.L00002f34
/* 2f28: 006d082b */ sltu $at,$v1,$t5
/* 2f2c: 1420ffed */ bnez $at,.L00002ee4
/* 2f30: 00000000 */ nop
.L00002f34:
/* 2f34: 3c048006 */ lui $a0,%hi(osViModeTable+0xa0)
/* 2f38: 0c005467 */ jal joy0001519c
/* 2f3c: 2484f7b0 */ addiu $a0,$a0,%lo(osViModeTable+0xa0)
.L00002f40:
/* 2f40: 1000ffff */ b .L00002f40
/* 2f44: 00000000 */ nop
/* 2f48: 00000000 */ nop
/* 2f4c: 00000000 */ nop
/* 2f50: 00000000 */ nop
/* 2f54: 00000000 */ nop
/* 2f58: 00000000 */ nop
/* 2f5c: 00000000 */ nop
/* 2f60: 8fbf0014 */ lw $ra,0x14($sp)
/* 2f64: 27bd0030 */ addiu $sp,$sp,0x30
/* 2f68: 03e00008 */ jr $ra
/* 2f6c: 00000000 */ nop
);
if (osTvType == OS_TV_TYPE_MPAL) {
mode = &osViModeTable[OS_VI_MPAL_LAN1];
} else {
mode = &osViModeTable[OS_VI_NTSC_LAN1];
}
#endif
mode->fldRegs[0].yScale = 1024;
mode->fldRegs[1].yScale = 1024;
osViSetMode(mode);
// Blank the screen
osViBlack(1);
// Wait about 0.048 seconds
prenmitime = osGetTime();
while (osGetTime() < prenmitime + OS_NSEC_TO_CYCLES(48484848)) {
// empty
}
// Stop controller rumbles if active
joyReset();
// Wait for the system to reset
while (1);
}
void resetThreadCreate(void)
{
osCreateMesgQueue(&g_ResetMesgQueue, &g_ResetMesg, 10);

8
src/lib/sched.c
View File

@ -269,18 +269,18 @@ void func00002078(OSSched *sc)
sc->frameCount++;
#if VERSION >= VERSION_PAL_FINAL
if (var8005ced0 == 0 && (sc->frameCount & 1)) {
if (!g_Resetting && (sc->frameCount & 1)) {
osStopTimer(&var8008de18);
osSetTimer(&var8008de18, 280000, 0, amgrGetFrameMesgQueue(), &var8005cea8);
}
#else
if (var8005ced0 == 0 && ((sc->frameCount & 1) || IS4MB())) {
if (!g_Resetting && ((sc->frameCount & 1) || IS4MB())) {
osStopTimer(&var8008de18);
osSetTimer(&var8008de18, 280000, 0, amgrGetFrameMesgQueue(), &var8005cea8);
}
#endif
if (var8005ced0 == 0) {
if (!g_Resetting) {
func00009ed4();
}
@ -347,7 +347,7 @@ void __scHandleRSP(OSSched *sc)
OSScTask *t, *sp = 0, *dp = 0;
s32 state;
if (!var8005ced0) {
if (!g_Resetting) {
t = sc->curRSPTask;
sc->curRSPTask = 0;