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Decompile osStartThread

This commit is contained in:
Ryan Dwyer 2021-01-26 23:26:29 +10:00
parent 65ce393b78
commit 2a933aa362
2 changed files with 32 additions and 93 deletions
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1
Makefile
View File

@ -76,6 +76,7 @@ $(B_DIR)/lib/ultra/io/visetevent.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/destroythread.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/resetglobalintmask.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/setthreadpri.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/startthread.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/stopthread.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/thread.o: OPT_LVL := -O1
$(B_DIR)/lib/ultra/os/yieldthread.o: OPT_LVL := -O1

124
src/lib/ultra/os/startthread.c
View File

@ -1,95 +1,33 @@
#include <libultra_internal.h>
#include "game/data/data_000000.h"
GLOBAL_ASM(
glabel osStartThread
/* 481f0: 27bdffd8 */ addiu $sp,$sp,-40
/* 481f4: afbf001c */ sw $ra,0x1c($sp)
/* 481f8: afa40028 */ sw $a0,0x28($sp)
/* 481fc: afb10018 */ sw $s1,0x18($sp)
/* 48200: 0c01256c */ jal __osDisableInt
/* 48204: afb00014 */ sw $s0,0x14($sp)
/* 48208: 8fae0028 */ lw $t6,0x28($sp)
/* 4820c: 24010001 */ addiu $at,$zero,0x1
/* 48210: 00408025 */ or $s0,$v0,$zero
/* 48214: 95d10010 */ lhu $s1,0x10($t6)
/* 48218: 1221000c */ beq $s1,$at,.L0004824c
/* 4821c: 24010008 */ addiu $at,$zero,0x8
/* 48220: 1621002a */ bne $s1,$at,.L000482cc
/* 48224: 00000000 */ nop
/* 48228: 8fb80028 */ lw $t8,0x28($sp)
/* 4822c: 240f0002 */ addiu $t7,$zero,0x2
/* 48230: 3c048006 */ lui $a0,%hi(__osRunQueue)
/* 48234: a70f0010 */ sh $t7,0x10($t8)
/* 48238: 8fa50028 */ lw $a1,0x28($sp)
/* 4823c: 0c000f2e */ jal __osEnqueueThread
/* 48240: 24840938 */ addiu $a0,$a0,%lo(__osRunQueue)
/* 48244: 10000021 */ b .L000482cc
/* 48248: 00000000 */ nop
.L0004824c:
/* 4824c: 8fb90028 */ lw $t9,0x28($sp)
/* 48250: 8f280008 */ lw $t0,0x8($t9)
/* 48254: 11000005 */ beqz $t0,.L0004826c
/* 48258: 00000000 */ nop
/* 4825c: 3c098006 */ lui $t1,%hi(__osRunQueue)
/* 48260: 25290938 */ addiu $t1,$t1,%lo(__osRunQueue)
/* 48264: 1509000a */ bne $t0,$t1,.L00048290
/* 48268: 00000000 */ nop
.L0004826c:
/* 4826c: 8fab0028 */ lw $t3,0x28($sp)
/* 48270: 240a0002 */ addiu $t2,$zero,0x2
/* 48274: 3c048006 */ lui $a0,%hi(__osRunQueue)
/* 48278: a56a0010 */ sh $t2,0x10($t3)
/* 4827c: 8fa50028 */ lw $a1,0x28($sp)
/* 48280: 0c000f2e */ jal __osEnqueueThread
/* 48284: 24840938 */ addiu $a0,$a0,%lo(__osRunQueue)
/* 48288: 10000010 */ b .L000482cc
/* 4828c: 00000000 */ nop
.L00048290:
/* 48290: 8fad0028 */ lw $t5,0x28($sp)
/* 48294: 240c0008 */ addiu $t4,$zero,0x8
/* 48298: a5ac0010 */ sh $t4,0x10($t5)
/* 4829c: 8fae0028 */ lw $t6,0x28($sp)
/* 482a0: 8dc40008 */ lw $a0,0x8($t6)
/* 482a4: 0c000f2e */ jal __osEnqueueThread
/* 482a8: 01c02825 */ or $a1,$t6,$zero
/* 482ac: 8faf0028 */ lw $t7,0x28($sp)
/* 482b0: 0c000f40 */ jal __osPopThread
/* 482b4: 8de40008 */ lw $a0,0x8($t7)
/* 482b8: 00408825 */ or $s1,$v0,$zero
/* 482bc: 3c048006 */ lui $a0,%hi(__osRunQueue)
/* 482c0: 24840938 */ addiu $a0,$a0,%lo(__osRunQueue)
/* 482c4: 0c000f2e */ jal __osEnqueueThread
/* 482c8: 02202825 */ or $a1,$s1,$zero
.L000482cc:
/* 482cc: 3c188006 */ lui $t8,%hi(__osRunningThread)
/* 482d0: 8f180940 */ lw $t8,%lo(__osRunningThread)($t8)
/* 482d4: 17000005 */ bnez $t8,.L000482ec
/* 482d8: 00000000 */ nop
/* 482dc: 0c000f44 */ jal __osDispatchThread
/* 482e0: 00000000 */ nop
/* 482e4: 1000000f */ b .L00048324
/* 482e8: 00000000 */ nop
.L000482ec:
/* 482ec: 3c198006 */ lui $t9,%hi(__osRunningThread)
/* 482f0: 3c098006 */ lui $t1,%hi(__osRunQueue)
/* 482f4: 8d290938 */ lw $t1,%lo(__osRunQueue)($t1)
/* 482f8: 8f390940 */ lw $t9,%lo(__osRunningThread)($t9)
/* 482fc: 8d2a0004 */ lw $t2,0x4($t1)
/* 48300: 8f280004 */ lw $t0,0x4($t9)
/* 48304: 010a082a */ slt $at,$t0,$t2
/* 48308: 10200006 */ beqz $at,.L00048324
/* 4830c: 00000000 */ nop
/* 48310: 240b0002 */ addiu $t3,$zero,0x2
/* 48314: 3c048006 */ lui $a0,%hi(__osRunQueue)
/* 48318: a72b0010 */ sh $t3,0x10($t9)
/* 4831c: 0c000ee8 */ jal __osEnqueueAndYield
/* 48320: 24840938 */ addiu $a0,$a0,%lo(__osRunQueue)
.L00048324:
/* 48324: 0c012588 */ jal __osRestoreInt
/* 48328: 02002025 */ or $a0,$s0,$zero
/* 4832c: 8fbf001c */ lw $ra,0x1c($sp)
/* 48330: 8fb00014 */ lw $s0,0x14($sp)
/* 48334: 8fb10018 */ lw $s1,0x18($sp)
/* 48338: 03e00008 */ jr $ra
/* 4833c: 27bd0028 */ addiu $sp,$sp,0x28
);
void osStartThread(OSThread *t)
{
register u32 saveMask = __osDisableInt();
switch (t->state) {
case OS_STATE_WAITING:
t->state = OS_STATE_RUNNABLE;
__osEnqueueThread(&__osRunQueue, t);
break;
case OS_STATE_STOPPED:
if (t->queue == NULL || t->queue == &__osRunQueue) {
t->state = OS_STATE_RUNNABLE;
__osEnqueueThread(&__osRunQueue, t);
} else {
t->state = OS_STATE_WAITING;
__osEnqueueThread(t->queue, t);
__osEnqueueThread(&__osRunQueue, __osPopThread(t->queue));
}
break;
}
if (__osRunningThread == NULL) {
__osDispatchThread();
} else if (__osRunningThread->priority < __osRunQueue->priority) {
__osRunningThread->state = OS_STATE_RUNNABLE;
__osEnqueueAndYield(&__osRunQueue);
}
__osRestoreInt(saveMask);
}