mirror/perfect-dark
1
0
Fork 0
mirror of https://gitlab.com/ryandwyer/perfect-dark synced 2026-09-10 19:49:51 -04:00
Code Issues Packages Projects Releases Wiki Activity

Attempt to decompile osInitialize2

Browse Source
This commit is contained in:
Ryan Dwyer
2021-11-02 22:21:23 +10:00
parent b5eaaaeab2
commit 7937200efb
2 changed files with 58 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Makefile
+1
View File
@@ -146,6 +146,7 @@ O1_C_FILES := \
src/lib/ultra/os/createmesgqueue.c \
src/lib/ultra/os/destroythread.c \
src/lib/ultra/os/gettime.c \
src/lib/ultra/os/initialize2.c \
src/lib/ultra/os/jammesg.c \
src/lib/ultra/os/recvmesg.c \
src/lib/ultra/os/resetglobalintmask.c \
src/lib/ultra/os/initialize2.c
+57 -2
View File
@@ -17,8 +17,10 @@ typedef struct {
extern __osExceptionVector __osExceptionPreamble;
extern s32 osAppNMIBuffer[];
u32 var80060fe0pf = 0;
u32 var80060fe4pf = 62500000;
extern u32 __osFinalRom;
extern OSTime osClockRate;
OSTime osClockRate2 = 62500000;
s32 osViClock = VI_NTSC_CLOCK;
u32 var80060fecpf = 0;
u32 var80060ff0pf = OS_IM_ALL;
@@ -207,6 +209,59 @@ glabel osInitialize2
/* 51a64: 00000000 */ nop
);
void func00051a68pf(void);
// Mismatch: write to osClockRate needs to reuse $at, which happens if
// osClockRate is defined in this file, but it's writing to the one over in
// initialize.c, not the osClockRate2 in this file. Suspect these were both
// defined with the same name and that makerom allows duplicate variable names,
// merging them into one address.
//void osInitialize2()
//{
// u32 pifdata;
// u32 clock = 0;
// __osFinalRom = TRUE;
// __osSetSR(__osGetSR() | SR_CU1);
// __osSetFpcCsr(FPCSR_FS | FPCSR_EV);
//
// while (__osSiRawReadIo(PIF_RAM_END - 3, &pifdata));
// while (__osSiRawWriteIo(PIF_RAM_END - 3, pifdata | 8));
//
// *(__osExceptionVector *)UT_VEC = __osExceptionPreamble;
// *(__osExceptionVector *)XUT_VEC = __osExceptionPreamble;
// *(__osExceptionVector *)ECC_VEC = __osExceptionPreamble;
// *(__osExceptionVector *)E_VEC = __osExceptionPreamble;
//
// osWritebackDCache((void *)UT_VEC, E_VEC - UT_VEC + sizeof(__osExceptionVector));
// osInvalICache((void *)UT_VEC, E_VEC - UT_VEC + sizeof(__osExceptionVector));
//
// func00051a68pf();
// osUnmapTLBAll();
// osMapTLBRdb();
//
// osClockRate = osClockRate * 3 / 4;
//
// if (osResetType == 0 /*cold reset */) {
// bzero(osAppNMIBuffer, OS_APP_NMI_BUFSIZE);
// }
//
// if (osTvType == OS_TV_PAL) {
// osViClock = VI_PAL_CLOCK;
// } else if (osTvType == OS_TV_MPAL) {
// osViClock = VI_MPAL_CLOCK;
// } else {
// osViClock = VI_NTSC_CLOCK;
// }
//
// if (__osGetCause() & CAUSE_IP5) {
// while (1);
// }
//
// *(u32 *)PHYS_TO_K1(AI_CONTROL_REG) = 1;
// *(u32 *)PHYS_TO_K1(AI_DACRATE_REG) = 0x3fff;
// *(u32 *)PHYS_TO_K1(AI_BITRATE_REG) = 0xf;
//}
GLOBAL_ASM(
glabel func00051a68pf
/* 51a68: 240e0007 */ li $t6,0x7