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use more constants in InterruptMain

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This commit is contained in:
YamaArashi 2015-10-05 06:53:39 -07:00
parent 9024595c93
commit 064051d247
2 changed files with 46 additions and 27 deletions
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40
asm/crt0.s
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@ -50,48 +50,48 @@ InterruptMain:
strh r0, [r3, 0x8]
and r1, r2, r2, lsr 16
mov r12, 0
ands r0, r1, 0x4
ands r0, r1, INTR_FLAG_VCOUNT
bne _08000320
add r12, r12, 0x4
mov r0, 0x1
strh r0, [r3, 0x8]
ands r0, r1, 0x80
ands r0, r1, INTR_FLAG_SERIAL
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x40
ands r0, r1, INTR_FLAG_TIMER3
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x2
ands r0, r1, INTR_FLAG_HBLANK
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x1
ands r0, r1, INTR_FLAG_VBLANK
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x8
ands r0, r1, INTR_FLAG_TIMER0
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x10
ands r0, r1, INTR_FLAG_TIMER1
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x20
ands r0, r1, INTR_FLAG_TIMER2
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x100
ands r0, r1, INTR_FLAG_DMA0
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x200
ands r0, r1, INTR_FLAG_DMA1
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x400
ands r0, r1, INTR_FLAG_DMA2
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x800
ands r0, r1, INTR_FLAG_DMA3
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x1000
ands r0, r1, INTR_FLAG_KEYPAD
bne _08000320
add r12, r12, 0x4
ands r0, r1, 0x2000
ands r0, r1, INTR_FLAG_GAMEPAK
strbne r0, [r3, -0x17C]
_0800031C:
bne _0800031C
@ -103,13 +103,13 @@ _08000320:
ldrb r0, [r0, 0xA]
mov r1, 0x8
mov r0, r1, lsl r0
orr r0, r0, 0x2000
orr r1, r0, 0xC6
orr r0, r0, INTR_FLAG_GAMEPAK
orr r1, r0, INTR_FLAG_SERIAL | INTR_FLAG_TIMER3 | INTR_FLAG_VCOUNT | INTR_FLAG_HBLANK
and r1, r1, r2
strh r1, [r3]
mrs r3, cpsr
bic r3, r3, 0xDF
orr r3, r3, 0x1F
bic r3, r3, PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK
orr r3, r3, PSR_SYS_MODE
msr cpsr_cf, r3
ldr r1, =0x03002710
add r1, r1, r12
@ -119,8 +119,8 @@ _08000320:
bx r0
ldmia sp!, {lr}
mrs r3, cpsr
bic r3, r3, 0xDF
orr r3, r3, 0x92
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]

19
asm/defines.s
View File

@ -5,6 +5,10 @@
.set PSR_ABT_MODE, 0x00000017
.set PSR_UND_MODE, 0x0000001b
.set PSR_SYS_MODE, 0x0000001f
.set PSR_MODE_MASK, 0x0000001f
.set PSR_T_BIT, 0x00000020
.set PSR_F_BIT, 0x00000040
.set PSR_I_BIT, 0x00000080
.set EWRAM_START, 0x02000000
.set EWRAM_END, EWRAM_START + 0x40000
@ -12,3 +16,18 @@
.set IWRAM_END, IWRAM_START + 0x8000
.set INTR_VECTOR, IWRAM_END - 0x4
.set INTR_FLAG_VBLANK, 1 << 0
.set INTR_FLAG_HBLANK, 1 << 1
.set INTR_FLAG_VCOUNT, 1 << 2
.set INTR_FLAG_TIMER0, 1 << 3
.set INTR_FLAG_TIMER1, 1 << 4
.set INTR_FLAG_TIMER2, 1 << 5
.set INTR_FLAG_TIMER3, 1 << 6
.set INTR_FLAG_SERIAL, 1 << 7
.set INTR_FLAG_DMA0, 1 << 8
.set INTR_FLAG_DMA1, 1 << 9
.set INTR_FLAG_DMA2, 1 << 10
.set INTR_FLAG_DMA3, 1 << 11
.set INTR_FLAG_KEYPAD, 1 << 12
.set INTR_FLAG_GAMEPAK, 1 << 13