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Decompile osGbpakReadId
This commit is contained in:
Ryan Dwyer
parent
c9dc9197ea
commit
f1b06f7ac2
1
Makefile
1
Makefile
@ -75,6 +75,7 @@ $(B_DIR)/lib/ultra/io/contpfs.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/contramread.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/contramwrite.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/gbpakgetstatus.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/gbpakreadid.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/motor.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/pfschecker.o: LOOPUNROLL :=
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$(B_DIR)/lib/ultra/io/pfsfreeblocks.o: LOOPUNROLL :=
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@ -126,8 +126,6 @@ extern u32 var800609a0;
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extern u32 var800609c4;
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extern u32 var800609f0;
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extern u32 var800611ec;
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extern u32 var800611f0;
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extern u32 var80061220;
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extern OSViMode osViModePalLan1;
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extern OSViMode osViModeMpalLan1;
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extern OSViMode osViModeNtscLan1;
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@ -2,153 +2,91 @@
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#include "libultra_internal.h"
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#include "constants.h"
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#include "bss.h"
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#include "lib/lib_4b170.h"
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#include "lib/lib_4e090.h"
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#include "data.h"
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#include "types.h"
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u32 var800611f0 = 0xceed6666;
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u32 var800611f4 = 0xcc0d000b;
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u32 var800611f8 = 0x03730083;
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u32 var800611fc = 0x000c000d;
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u32 var80061200 = 0x0008111f;
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u32 var80061204 = 0x8889000e;
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u32 var80061208 = 0xdccc6ee6;
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u32 var8006120c = 0xddddd999;
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u32 var80061210 = 0xbbbb6763;
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u32 var80061214 = 0x6e0eeccc;
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u32 var80061218 = 0xdddc999f;
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u32 var8006121c = 0xbbb9333e;
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u32 g_OsGbNintendoData[] = {
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0xceed6666, 0xcc0d000b, 0x03730083, 0x000c000d,
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0x0008111f, 0x8889000e, 0xdccc6ee6, 0xddddd999,
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0xbbbb6763, 0x6e0eeccc, 0xdddc999f, 0xbbb9333e,
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};
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u32 var80061220 = 0x00010101;
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u32 var80061224 = 0xff0202ff;
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u32 var80061228 = 0x0000ffff;
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u32 var8006122c = 0xffffff03;
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u32 var80061230 = 0x03030303;
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u8 g_OsGbCartVersions[] = {
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0x00, 0x01, 0x01, 0x01,
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0xff, 0x02, 0x02, 0xff,
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0x00, 0x00, 0xff, 0xff,
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0xff, 0xff, 0xff, 0x03,
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0x03, 0x03, 0x03, 0x03,
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};
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GLOBAL_ASM(
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glabel osGbpakReadId
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/* 50d60: 27bdff70 */ addiu $sp,$sp,-144
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/* 50d64: afbf001c */ sw $ra,0x1c($sp)
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/* 50d68: afa50094 */ sw $a1,0x94($sp)
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/* 50d6c: afa40090 */ sw $a0,0x90($sp)
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/* 50d70: afa60098 */ sw $a2,0x98($sp)
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/* 50d74: 0c0142f8 */ jal osGbpakGetStatus
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/* 50d78: 00c02825 */ or $a1,$a2,$zero
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/* 50d7c: 2401000d */ addiu $at,$zero,0xd
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/* 50d80: 14410005 */ bne $v0,$at,.L00050d98
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/* 50d84: 00403825 */ or $a3,$v0,$zero
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/* 50d88: 8fa40090 */ lw $a0,0x90($sp)
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/* 50d8c: 0c0142f8 */ jal osGbpakGetStatus
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/* 50d90: 8fa50098 */ lw $a1,0x98($sp)
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/* 50d94: 00403825 */ or $a3,$v0,$zero
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.L00050d98:
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/* 50d98: 2401000d */ addiu $at,$zero,0xd
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/* 50d9c: 14410003 */ bne $v0,$at,.L00050dac
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/* 50da0: 00000000 */ nop
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/* 50da4: 10000058 */ b .L00050f08
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/* 50da8: 24020004 */ addiu $v0,$zero,0x4
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.L00050dac:
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/* 50dac: 14400055 */ bnez $v0,.L00050f04
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/* 50db0: 8fae0098 */ lw $t6,0x98($sp)
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/* 50db4: 91cf0000 */ lbu $t7,0x0($t6)
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/* 50db8: 8fa40090 */ lw $a0,0x90($sp)
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/* 50dbc: 31f80001 */ andi $t8,$t7,0x1
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/* 50dc0: 57000008 */ bnezl $t8,.L00050de4
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/* 50dc4: 24190060 */ addiu $t9,$zero,0x60
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/* 50dc8: 0c0018cc */ jal osGbpakPower
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/* 50dcc: 24050001 */ addiu $a1,$zero,0x1
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/* 50dd0: 50400004 */ beqzl $v0,.L00050de4
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/* 50dd4: 24190060 */ addiu $t9,$zero,0x60
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/* 50dd8: 1000004c */ b .L00050f0c
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/* 50ddc: 8fbf001c */ lw $ra,0x1c($sp)
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/* 50de0: 24190060 */ addiu $t9,$zero,0x60
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.L00050de4:
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/* 50de4: afb90010 */ sw $t9,0x10($sp)
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/* 50de8: 8fa40090 */ lw $a0,0x90($sp)
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/* 50dec: 00002825 */ or $a1,$zero,$zero
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/* 50df0: 24060100 */ addiu $a2,$zero,0x100
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/* 50df4: 0c0144ec */ jal osGbpakReadWrite
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/* 50df8: 27a70024 */ addiu $a3,$sp,0x24
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/* 50dfc: 10400003 */ beqz $v0,.L00050e0c
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/* 50e00: 8fa40090 */ lw $a0,0x90($sp)
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/* 50e04: 10000041 */ b .L00050f0c
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/* 50e08: 8fbf001c */ lw $ra,0x1c($sp)
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.L00050e0c:
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/* 50e0c: 0c0142f8 */ jal osGbpakGetStatus
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/* 50e10: 8fa50098 */ lw $a1,0x98($sp)
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/* 50e14: 2401000d */ addiu $at,$zero,0xd
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/* 50e18: 14410002 */ bne $v0,$at,.L00050e24
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/* 50e1c: 00403825 */ or $a3,$v0,$zero
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/* 50e20: 24070004 */ addiu $a3,$zero,0x4
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.L00050e24:
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/* 50e24: 10e00003 */ beqz $a3,.L00050e34
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/* 50e28: 3c048006 */ lui $a0,%hi(var800611f0)
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/* 50e2c: 10000036 */ b .L00050f08
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/* 50e30: 00e01025 */ or $v0,$a3,$zero
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.L00050e34:
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/* 50e34: 248411f0 */ addiu $a0,$a0,%lo(var800611f0)
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/* 50e38: 27a50028 */ addiu $a1,$sp,0x28
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/* 50e3c: 24060030 */ addiu $a2,$zero,0x30
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/* 50e40: 0c013824 */ jal bcmp
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/* 50e44: afa70088 */ sw $a3,0x88($sp)
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/* 50e48: 10400003 */ beqz $v0,.L00050e58
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/* 50e4c: 8fa70088 */ lw $a3,0x88($sp)
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/* 50e50: 1000002d */ b .L00050f08
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/* 50e54: 24020004 */ addiu $v0,$zero,0x4
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.L00050e58:
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/* 50e58: 93a20058 */ lbu $v0,0x58($sp)
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/* 50e5c: 93a80059 */ lbu $t0,0x59($sp)
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/* 50e60: 27a3005a */ addiu $v1,$sp,0x5a
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/* 50e64: 27a40072 */ addiu $a0,$sp,0x72
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/* 50e68: 00481021 */ addu $v0,$v0,$t0
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/* 50e6c: 304900ff */ andi $t1,$v0,0xff
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/* 50e70: 01201025 */ or $v0,$t1,$zero
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.L00050e74:
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/* 50e74: 906a0000 */ lbu $t2,0x0($v1)
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/* 50e78: 906c0001 */ lbu $t4,0x1($v1)
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/* 50e7c: 906e0002 */ lbu $t6,0x2($v1)
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/* 50e80: 90780003 */ lbu $t8,0x3($v1)
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/* 50e84: 004a5821 */ addu $t3,$v0,$t2
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/* 50e88: 016c6821 */ addu $t5,$t3,$t4
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/* 50e8c: 01ae7821 */ addu $t7,$t5,$t6
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/* 50e90: 01f81021 */ addu $v0,$t7,$t8
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/* 50e94: 305900ff */ andi $t9,$v0,0xff
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/* 50e98: 24630004 */ addiu $v1,$v1,0x4
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/* 50e9c: 1464fff5 */ bne $v1,$a0,.L00050e74
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/* 50ea0: 03201025 */ or $v0,$t9,$zero
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/* 50ea4: 27280019 */ addiu $t0,$t9,0x19
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/* 50ea8: 310900ff */ andi $t1,$t0,0xff
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/* 50eac: 11200003 */ beqz $t1,.L00050ebc
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/* 50eb0: 27a40024 */ addiu $a0,$sp,0x24
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/* 50eb4: 10000014 */ b .L00050f08
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/* 50eb8: 24020004 */ addiu $v0,$zero,0x4
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.L00050ebc:
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/* 50ebc: 8fa50094 */ lw $a1,0x94($sp)
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/* 50ec0: 24060050 */ addiu $a2,$zero,0x50
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/* 50ec4: 0c012c5c */ jal bcopy
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/* 50ec8: afa70088 */ sw $a3,0x88($sp)
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/* 50ecc: 8faa0094 */ lw $t2,0x94($sp)
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/* 50ed0: 3c0b8006 */ lui $t3,%hi(var80061220)
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/* 50ed4: 8fa70088 */ lw $a3,0x88($sp)
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/* 50ed8: 91420047 */ lbu $v0,0x47($t2)
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/* 50edc: 8fac0090 */ lw $t4,0x90($sp)
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/* 50ee0: 28410014 */ slti $at,$v0,0x14
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/* 50ee4: 10200003 */ beqz $at,.L00050ef4
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/* 50ee8: 01625821 */ addu $t3,$t3,$v0
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/* 50eec: 916b1220 */ lbu $t3,%lo(var80061220)($t3)
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/* 50ef0: ad8b004c */ sw $t3,0x4c($t4)
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.L00050ef4:
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/* 50ef4: 8fad0094 */ lw $t5,0x94($sp)
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/* 50ef8: 8faf0090 */ lw $t7,0x90($sp)
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/* 50efc: 91ae0049 */ lbu $t6,0x49($t5)
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/* 50f00: adee0050 */ sw $t6,0x50($t7)
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.L00050f04:
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/* 50f04: 00e01025 */ or $v0,$a3,$zero
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.L00050f08:
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/* 50f08: 8fbf001c */ lw $ra,0x1c($sp)
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.L00050f0c:
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/* 50f0c: 27bd0090 */ addiu $sp,$sp,0x90
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/* 50f10: 03e00008 */ jr $ra
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/* 50f14: 00000000 */ nop
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);
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s32 osGbpakReadId(OSPfs *pfs, OSGbpakId *id, u8 *status)
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{
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s32 i;
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s32 ret;
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u8 sum;
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u8 buffer[0x60];
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ret = osGbpakGetStatus(pfs, status);
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if (ret == PFS_ERR_NEW_GBCART) {
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ret = osGbpakGetStatus(pfs, status);
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}
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if (ret == PFS_ERR_NEW_GBCART) {
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return PFS_ERR_CONTRFAIL;
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}
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if (ret == 0) {
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if ((*status & OS_GBPAK_POWER) == 0) {
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ret = osGbpakPower(pfs, OS_GBPAK_POWER_ON);
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if (ret != 0) {
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return ret;
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}
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}
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ret = osGbpakReadWrite(pfs, PFS_READ, 0x100, buffer, 0x60);
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if (ret != 0) {
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return ret;
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}
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ret = osGbpakGetStatus(pfs, status);
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if (ret == PFS_ERR_NEW_GBCART) {
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ret = PFS_ERR_CONTRFAIL;
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}
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if (ret != 0) {
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return ret;
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}
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// Compare id->nintendo_chr with expected data
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if (bcmp(g_OsGbNintendoData, &buffer[4], sizeof(id->nintendo_chr)) != 0) {
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return PFS_ERR_CONTRFAIL;
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}
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// Sum game_title through to isum
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sum = 0;
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for (i = 0x34; i < 0x4e; i++) {
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sum += buffer[i];
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}
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sum = (sum + 25) & 0xff;
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if (sum != 0) {
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return PFS_ERR_CONTRFAIL;
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}
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bcopy(buffer, id, sizeof(OSGbpakId));
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if (id->cart_type < 20) {
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pfs->version = g_OsGbCartVersions[id->cart_type];
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}
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pfs->dir_size = id->ram_size;
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}
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return ret;
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}
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