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.include "constants/global.h"
.include "constants/gba_constants.inc"
.include "constants/misc_constants.inc"
.include "constants/version.inc"
.syntax unified
.global Start
.text
.arm
Start: @ 8000000
b Init
# These will be set by gbafix
.global RomHeaderNintendoLogo
RomHeaderNintendoLogo:
.space 0x9c
RomHeaderGameTitle:
.space 12
RomHeaderGameCode:
.4byte 0
RomHeaderMakerCode:
.2byte 0
RomHeaderMagic:
.byte 0x96
RomHeaderMainUnitCode:
.byte 0
RomHeaderDeviceType:
.byte 0
RomHeaderReserved1:
.space 7
RomHeaderSoftwareVersion:
.byte 0
RomHeaderChecksum:
.byte 0
RomHeaderReserved2:
.space 2
@ 80000C0
.word 0
.global GPIOPortData
GPIOPortData: @ 80000C4
.hword 0
.global GPIOPortDirection
GPIOPortDirection: @ 80000C6
.hword 0
.global GPIOPortReadEnable
GPIOPortReadEnable: @ 80000C8
.hword 0
.space 6
@ 80000D0
@ TODO: figure out what this data is
.ifdef GERMAN
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte 0xFFFFFFFF
.4byte GAME_VERSION
.4byte GAME_LANGUAGE
.ifdef SAPPHIRE
.ascii "pokemon sapphire version"
.space 8
.else
.ascii "pokemon ruby version"
.space 12
.endif
.4byte gMonFrontPicTable
.4byte gMonBackPicTable
.4byte gMonPaletteTable
.4byte gMonShinyPaletteTable
.4byte gMonIconTable
.4byte gMonIconPaletteIndices
.4byte gMonIconPaletteTable
.4byte gSpeciesNames
.4byte gMoveNames
.4byte gDecorations
.4byte 0x1220
.4byte 0x1340
.4byte 0x18
.4byte 0x938
.4byte 0x3A8C
.4byte 0x46
.4byte 0x836
.4byte 0x84C
.4byte 0x182
.4byte 0xA0A0A07
.4byte 0xC060C0C
.4byte 0xC121006
.4byte 0x8010B0F
.4byte 0xC
.4byte 0x890
.4byte 0x3AC0
.4byte 0x234
.4byte 0x238
.4byte 9
.4byte 0xA
.4byte 0
.4byte 8
.4byte 0x556
.4byte 0x557
.4byte 0x312F
.4byte 0x311B
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0
.4byte 0xFFFFFFFF
.endif
.arm
.align 2, 0
.global Init
Init:
mov r0, PSR_IRQ_MODE
msr cpsr_cf, r0
ldr sp, sp_irq
mov r0, PSR_SYS_MODE
msr cpsr_cf, r0
ldr sp, sp_sys
ldr r1, =INTR_VECTOR
adr r0, IntrMain
str r0, [r1]
ldr r1, =AgbMain
mov lr, pc
bx r1
b Init
.align 2, 0
sp_sys: .word IWRAM_END - 0x1a0
sp_irq: .word IWRAM_END - 0x60
.arm
.align 2, 0
.global IntrMain
IntrMain:
mov r3, REG_BASE
add r3, r3, 0x200
ldr r2, [r3, OFFSET_REG_IE - 0x200]
ldrh r1, [r3, OFFSET_REG_IME - 0x200]
mrs r0, spsr
stmdb sp!, {r0-r3,lr}
mov r0, 1
strh r0, [r3, OFFSET_REG_IME - 0x200]
and r1, r2, r2, lsr 16
mov r12, 0
ands r0, r1, INTR_FLAG_SERIAL
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_TIMER3
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_HBLANK
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_VBLANK
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_VCOUNT
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_TIMER0
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_TIMER1
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_TIMER2
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_DMA0
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_DMA1
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_DMA2
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_DMA3
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_KEYPAD
bne IntrMain_FoundIntr
add r12, r12, 0x4
ands r0, r1, INTR_FLAG_GAMEPAK
strbne r0, [r3, OFFSET_REG_SOUNDCNT_X - 0x200]
IntrMain_Loop:
bne IntrMain_Loop
IntrMain_FoundIntr:
strh r0, [r3, OFFSET_REG_IF - 0x200]
mov r1, INTR_FLAG_SERIAL | INTR_FLAG_TIMER3 | INTR_FLAG_HBLANK
bic r2, r2, r0
and r1, r1, r2
strh r1, [r3, OFFSET_REG_IE - 0x200]
mrs r3, cpsr
bic r3, r3, PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK
orr r3, r3, PSR_SYS_MODE
msr cpsr_cf, r3
ldr r1, =gIntrTable
add r1, r1, r12
ldr r0, [r1]
stmdb sp!, {lr}
adr lr, IntrMain_RetAddr
bx r0
IntrMain_RetAddr:
ldmia sp!, {lr}
mrs r3, cpsr
bic r3, r3, PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK
orr r3, r3, PSR_I_BIT | PSR_IRQ_MODE
msr cpsr_cf, r3
ldmia sp!, {r0-r3,lr}
strh r2, [r3, OFFSET_REG_IE - 0x200]
strh r1, [r3, OFFSET_REG_IME - 0x200]
msr spsr_cf, r0
bx lr
.pool
.align 2, 0 @ Don't pad with nop.
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