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-rw-r--r--asm/multiboot.s906
-rw-r--r--include/gba/gba.h1
-rw-r--r--include/gba/io_reg.h3
-rw-r--r--include/gba/macro.h2
-rw-r--r--include/gba/multiboot.h55
-rw-r--r--include/gba/syscall.h16
-rw-r--r--include/gba/types.h21
-rw-r--r--include/multiboot.h21
-rw-r--r--ld_script.txt2
-rw-r--r--src/multiboot.c470
-rw-r--r--sym_bss.txt5
11 files changed, 593 insertions, 909 deletions
diff --git a/asm/multiboot.s b/asm/multiboot.s
deleted file mode 100644
index e0e3055c2..000000000
--- a/asm/multiboot.s
+++ /dev/null
@@ -1,906 +0,0 @@
- .include "asm/macros.inc"
- .include "constants/constants.inc"
-
- .syntax unified
-
- .text
-
- thumb_func_start MultiBootInit
-@ void MultiBootInit(MultiBootParam *mp)
-MultiBootInit: @ 81BA6D0
- adds r2, r0, 0
- movs r1, 0
- strb r1, [r2, 0x1E]
- strb r1, [r2, 0x18]
- strb r1, [r2, 0x1D]
- adds r3, r2, 0
- adds r3, 0x4A
- movs r0, 0xF
- strb r0, [r3]
- adds r0, r2, 0
- adds r0, 0x48
- strb r1, [r0]
- strh r1, [r2, 0x16]
- ldr r0, =0x04000134
- strh r1, [r0]
- ldr r2, =0x04000128
- ldr r3, =0x00002003
- adds r0, r3, 0
- strh r0, [r2]
- ldr r0, =0x0400012a
- strh r1, [r0]
- bx lr
- .pool
- thumb_func_end MultiBootInit
-
- thumb_func_start MultiBootMain
-@ int MultiBootMain(MultiBootParam *mp)
-MultiBootMain: @ 81BA70C
- push {r4-r7,lr}
- mov r7, r10
- mov r6, r9
- mov r5, r8
- push {r5-r7}
- adds r7, r0, 0
- bl MultiBootCheckComplete
- cmp r0, 0
- beq _081BA722
- b _081BAAEA
-_081BA722:
- adds r0, r7, 0
- adds r0, 0x4A
- ldrb r1, [r0]
- mov r10, r0
- cmp r1, 0xF
- bls _081BA736
- subs r0, r1, 0x1
- mov r1, r10
- strb r0, [r1]
- b _081BAAEA
-_081BA736:
- adds r1, r7, 0
- adds r1, 0x48
- ldrb r0, [r1]
- cmp r0, 0
- beq _081BA760
- movs r0, 0
- strb r0, [r1]
- ldr r0, =0x04000128
- ldrh r0, [r0]
- movs r5, 0xFC
- ands r5, r0
- cmp r5, 0x8
- beq _081BA760
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x8
- eors r0, r5
- b _081BAAEC
- .pool
-_081BA760:
- ldrb r0, [r7, 0x18]
- cmp r0, 0xDF
- bls _081BA7B2
- adds r0, r7, 0
- bl MultiBootHandShake
- adds r5, r0, 0
- cmp r5, 0
- beq _081BA774
- b _081BAAEC
-_081BA774:
- adds r0, r7, 0
- adds r0, 0x4B
- ldrb r0, [r0]
- cmp r0, 0x1
- bne _081BA790
- ldrb r0, [r7, 0x18]
- cmp r0, 0xE1
- bls _081BA790
- adds r0, r7, 0
- bl MultiBootCheckComplete
- cmp r0, 0
- bne _081BA790
- b _081BAADA
-_081BA790:
- adds r0, r7, 0
- bl MultiBootCheckComplete
- cmp r0, 0
- beq _081BA79C
- b _081BAAEA
-_081BA79C:
- ldrh r0, [r7, 0x16]
- cmp r0, 0
- bne _081BA7AC
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x71
- b _081BAAEC
-_081BA7AC:
- subs r0, 0x1
- strh r0, [r7, 0x16]
- b _081BAAEA
-_081BA7B2:
- ldrb r0, [r7, 0x18]
- cmp r0, 0x2
- bne _081BA7BA
- b _081BA8F0
-_081BA7BA:
- cmp r0, 0x2
- bgt _081BA7C8
- cmp r0, 0
- beq _081BA7D6
- cmp r0, 0x1
- beq _081BA892
- b _081BAA28
-_081BA7C8:
- cmp r0, 0xD0
- bne _081BA7CE
- b _081BA93C
-_081BA7CE:
- cmp r0, 0xD1
- bne _081BA7D4
- b _081BA9D6
-_081BA7D4:
- b _081BAA28
-_081BA7D6:
- movs r3, 0xE
- movs r5, 0x3
- ldr r0, =0x04000120
- ldrh r0, [r0, 0x6]
- adds r1, r0, 0
- ldr r0, =0x0000ffff
- ldrb r2, [r7, 0x1E]
- adds r6, r2, 0
- cmp r1, r0
- bne _081BA7FE
- adds r4, r1, 0
- ldr r1, =0x04000126
-_081BA7EE:
- asrs r3, 1
- subs r1, 0x2
- subs r5, 0x1
- cmp r5, 0
- beq _081BA7FE
- ldrh r0, [r1]
- cmp r0, r4
- beq _081BA7EE
-_081BA7FE:
- movs r0, 0xE
- ands r3, r0
- strb r3, [r7, 0x1D]
- movs r5, 0x3
- ldr r0, =0x04000120
- ldrh r0, [r0, 0x6]
- adds r4, r0, 0
- asrs r0, r2, 3
- movs r1, 0x1
- ands r0, r1
- cmp r0, 0
- beq _081BA82C
- ldr r0, =0x00007208
- b _081BA852
- .pool
-_081BA82C:
- subs r5, 0x1
- cmp r5, 0
- beq _081BA858
- lsls r0, r5, 1
- ldr r1, =0x04000120
- adds r0, r1
- ldrh r0, [r0]
- adds r4, r0, 0
- adds r0, r2, 0
- asrs r0, r5
- movs r1, 0x1
- ands r0, r1
- cmp r0, 0
- beq _081BA82C
- adds r0, r1, 0
- lsls r0, r5
- movs r1, 0xE4
- lsls r1, 7
- orrs r0, r1
-_081BA852:
- cmp r4, r0
- beq _081BA82C
- movs r3, 0
-_081BA858:
- adds r0, r3, 0
- ands r0, r6
- strb r0, [r7, 0x1E]
- cmp r3, 0
- bne _081BA868
- movs r0, 0xF
- mov r2, r10
- strb r0, [r2]
-_081BA868:
- mov r1, r10
- ldrb r0, [r1]
- cmp r0, 0
- bne _081BA884
- ldrb r0, [r7, 0x1D]
- ldrb r2, [r7, 0x1E]
- cmp r0, r2
- beq _081BA88A
- adds r0, r7, 0
- bl MultiBootStartProbe
- b _081BA892
- .pool
-_081BA884:
- subs r0, 0x1
- mov r1, r10
- strb r0, [r1]
-_081BA88A:
- ldrb r1, [r7, 0x1E]
- movs r2, 0xC4
- lsls r2, 7
- b _081BA992
-_081BA892:
- adds r1, r7, 0
- adds r1, 0x49
- movs r0, 0
- strb r0, [r1]
- movs r5, 0x3
- mov r12, r1
- ldr r3, =gUnknown_0300129C
-_081BA8A0:
- lsls r0, r5, 1
- ldr r2, =0x04000120
- adds r0, r2
- ldrh r0, [r0]
- adds r4, r0, 0
- asrs r0, r4, 8
- subs r2, r5, 0x1
- cmp r0, 0x72
- bne _081BA8CA
- lsls r0, r2, 1
- adds r0, r3
- strh r4, [r0]
- movs r0, 0xFF
- ands r4, r0
- movs r0, 0x1
- lsls r0, r5
- cmp r4, r0
- bne _081BA8CA
- ldrb r0, [r1]
- orrs r4, r0
- strb r4, [r1]
-_081BA8CA:
- adds r5, r2, 0
- cmp r5, 0
- bne _081BA8A0
- ldrb r0, [r7, 0x1D]
- mov r1, r12
- ldrb r1, [r1]
- cmp r0, r1
- bne _081BA88A
- movs r0, 0x2
- strb r0, [r7, 0x18]
- mov r2, r12
- ldrb r1, [r2]
- movs r2, 0xC2
- lsls r2, 7
- b _081BA992
- .pool
-_081BA8F0:
- movs r5, 0x3
- movs r0, 0x49
- adds r0, r7
- mov r12, r0
- mov r4, r12
- movs r6, 0x1
- ldr r1, =gUnknown_0300129C
- mov r9, r1
- ldr r2, =0x04000120
- mov r8, r2
-_081BA904:
- ldrb r3, [r4]
- adds r0, r3, 0
- asrs r0, r5
- ands r0, r6
- subs r2, r5, 0x1
- cmp r0, 0
- beq _081BA92A
- lsls r0, r5, 1
- add r0, r8
- ldrh r1, [r0]
- lsls r0, r2, 1
- add r0, r9
- ldrh r0, [r0]
- cmp r1, r0
- beq _081BA92A
- adds r0, r6, 0
- lsls r0, r5
- eors r3, r0
- strb r3, [r4]
-_081BA92A:
- adds r5, r2, 0
- cmp r5, 0
- bne _081BA904
- b _081BAA90
- .pool
-_081BA93C:
- movs r3, 0x1
- movs r5, 0x3
- movs r0, 0x49
- adds r0, r7
- mov r12, r0
- adds r6, r7, 0
- adds r6, 0x19
- ldr r1, =gUnknown_0300129C
- mov r8, r1
-_081BA94E:
- lsls r0, r5, 1
- ldr r2, =0x04000120
- adds r0, r2
- ldrh r0, [r0]
- adds r4, r0, 0
- subs r2, r5, 0x1
- adds r0, r6, r2
- strb r4, [r0]
- mov r0, r12
- ldrb r1, [r0]
- asrs r1, r5
- movs r0, 0x1
- ands r1, r0
- cmp r1, 0
- beq _081BA982
- asrs r0, r4, 8
- subs r0, 0x72
- cmp r0, 0x1
- bls _081BA976
- b _081BAAE0
-_081BA976:
- lsls r0, r2, 1
- add r0, r8
- ldrh r0, [r0]
- cmp r4, r0
- bne _081BA982
- movs r3, 0
-_081BA982:
- adds r5, r2, 0
- cmp r5, 0
- bne _081BA94E
- cmp r3, 0
- bne _081BA9A8
- ldrb r1, [r7, 0x1C]
- movs r2, 0xC6
- lsls r2, 7
-_081BA992:
- adds r0, r2, 0
- orrs r1, r0
- adds r0, r7, 0
- bl MultiBootSend
- b _081BAAEC
- .pool
-_081BA9A8:
- movs r0, 0xD1
- strb r0, [r7, 0x18]
- movs r3, 0x11
- movs r5, 0x3
- adds r1, r6, 0x2
-_081BA9B2:
- ldrb r0, [r1]
- adds r3, r0
- subs r1, 0x1
- subs r5, 0x1
- cmp r5, 0
- bne _081BA9B2
- strb r3, [r7, 0x14]
- movs r0, 0xFF
- ands r3, r0
- movs r1, 0xC8
- lsls r1, 7
- adds r0, r1, 0
- orrs r3, r0
- adds r0, r7, 0
- adds r1, r3, 0
- bl MultiBootSend
- b _081BAAEC
-_081BA9D6:
- movs r5, 0x3
- movs r2, 0x49
- ldrb r1, [r2, r7]
- ldr r2, =0x04000126
- movs r3, 0x1
-_081BA9E0:
- ldrh r0, [r2]
- adds r4, r0, 0
- adds r0, r1, 0
- asrs r0, r5
- ands r0, r3
- cmp r0, 0
- beq _081BA9F4
- asrs r0, r4, 8
- cmp r0, 0x73
- bne _081BAAE0
-_081BA9F4:
- subs r2, 0x2
- subs r5, 0x1
- cmp r5, 0
- bne _081BA9E0
- adds r0, r7, 0
- bl MultiBoot
- adds r5, r0, 0
- cmp r5, 0
- bne _081BAA18
- movs r0, 0xE0
- strb r0, [r7, 0x18]
- adds r0, 0xB0
- strh r0, [r7, 0x16]
- b _081BAAEA
- .pool
-_081BAA18:
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x1E
- mov r1, r10
- strb r0, [r1]
- movs r0, 0x70
- b _081BAAEC
-_081BAA28:
- movs r5, 0x3
- movs r2, 0x49
- adds r2, r7
- mov r12, r2
- mov r8, r12
- movs r0, 0x1
- mov r9, r0
-_081BAA36:
- mov r1, r8
- ldrb r6, [r1]
- adds r0, r6, 0
- asrs r0, r5
- mov r2, r9
- ands r0, r2
- cmp r0, 0
- beq _081BAA70
- lsls r0, r5, 1
- ldr r1, =0x04000120
- adds r0, r1
- ldrh r0, [r0]
- adds r4, r0, 0
- asrs r2, r4, 8
- ldrb r0, [r7, 0x18]
- lsrs r0, 1
- movs r1, 0x62
- subs r1, r0
- mov r3, r9
- lsls r3, r5
- cmp r2, r1
- bne _081BAA6A
- movs r0, 0xFF
- ands r4, r0
- cmp r4, r3
- beq _081BAA70
-_081BAA6A:
- eors r6, r3
- mov r2, r8
- strb r6, [r2]
-_081BAA70:
- subs r5, 0x1
- cmp r5, 0
- bne _081BAA36
- ldrb r0, [r7, 0x18]
- cmp r0, 0xC4
- bne _081BAA90
- mov r0, r12
- ldrb r1, [r0]
- movs r0, 0xE
- ands r0, r1
- strb r0, [r7, 0x1E]
- strb r5, [r7, 0x18]
- b _081BA88A
- .pool
-_081BAA90:
- mov r1, r12
- ldrb r0, [r1]
- cmp r0, 0
- bne _081BAAA2
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x50
- b _081BAAEC
-_081BAAA2:
- ldrb r0, [r7, 0x18]
- adds r0, 0x2
- strb r0, [r7, 0x18]
- lsls r0, 24
- lsrs r0, 24
- cmp r0, 0xC4
- bne _081BAAB2
- b _081BA88A
-_081BAAB2:
- ldrb r0, [r7, 0x18]
- ldr r1, [r7, 0x28]
- adds r0, r1
- subs r1, r0, 0x3
- ldrb r2, [r1]
- lsls r2, 8
- subs r0, 0x4
- ldrb r1, [r0]
- orrs r1, r2
- adds r0, r7, 0
- bl MultiBootSend
- adds r5, r0, 0
- cmp r5, 0
- bne _081BAAEC
- adds r0, r7, 0
- adds r0, 0x4B
- ldrb r0, [r0]
- cmp r0, 0x1
- bne _081BAAEA
-_081BAADA:
- bl MultiBootWaitSendDone
- b _081BA736
-_081BAAE0:
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x60
- b _081BAAEC
-_081BAAEA:
- movs r0, 0
-_081BAAEC:
- pop {r3-r5}
- mov r8, r3
- mov r9, r4
- mov r10, r5
- pop {r4-r7}
- pop {r1}
- bx r1
- thumb_func_end MultiBootMain
-
- thumb_func_start MultiBootSend
-@ int MultiBootSend(MultiBootParam *mp, u16 data)
-MultiBootSend: @ 81BAAFC
- push {r4,lr}
- adds r2, r0, 0
- lsls r1, 16
- lsrs r1, 16
- ldr r3, =0x04000128
- ldrh r0, [r3]
- movs r4, 0x8C
- ands r4, r0
- cmp r4, 0x8
- bne _081BAB34
- ldr r0, =0x0400012a
- strh r1, [r0]
- ldr r1, =0x00002083
- adds r0, r1, 0
- strh r0, [r3]
- adds r1, r2, 0
- adds r1, 0x48
- movs r0, 0x1
- strb r0, [r1]
- movs r0, 0
- b _081BAB40
- .pool
-_081BAB34:
- adds r0, r2, 0
- bl MultiBootInit
- movs r0, 0x8
- eors r4, r0
- adds r0, r4, 0
-_081BAB40:
- pop {r4}
- pop {r1}
- bx r1
- thumb_func_end MultiBootSend
-
- thumb_func_start MultiBootStartProbe
-@ void MultiBootStartProbe(MultiBootParam *mp)
-MultiBootStartProbe: @ 81BAB48
- push {lr}
- adds r1, r0, 0
- ldrb r0, [r1, 0x18]
- cmp r0, 0
- beq _081BAB5A
- adds r0, r1, 0
- bl MultiBootInit
- b _081BAB66
-_081BAB5A:
- adds r2, r1, 0
- adds r2, 0x4A
- strb r0, [r2]
- strb r0, [r1, 0x1E]
- movs r0, 0x1
- strb r0, [r1, 0x18]
-_081BAB66:
- pop {r0}
- bx r0
- thumb_func_end MultiBootStartProbe
-
- thumb_func_start MultiBootStartMaster
-@ void MultiBootStartMaster(MultiBootParam *mp, u8 *srcp, int length, u8 palette_color, s8 palette_speed)
-MultiBootStartMaster: @ 81BAB6C
- push {r4-r7,lr}
- adds r4, r0, 0
- adds r6, r1, 0
- ldr r0, [sp, 0x14]
- lsls r3, 24
- lsrs r5, r3, 24
- lsls r0, 24
- lsrs r7, r0, 24
- movs r3, 0
- ldrb r0, [r4, 0x18]
- cmp r0, 0
- bne _081BABA8
- ldrb r0, [r4, 0x1E]
- cmp r0, 0
- beq _081BABA8
- adds r0, r4, 0
- adds r0, 0x4A
- ldrb r0, [r0]
- cmp r0, 0
- bne _081BABA8
- str r6, [r4, 0x20]
- adds r2, 0xF
- movs r0, 0x10
- negs r0, r0
- ands r2, r0
- subs r0, 0xF0
- adds r1, r2, r0
- ldr r0, =0x0003ff00
- cmp r1, r0
- bls _081BABB4
-_081BABA8:
- adds r0, r4, 0
- bl MultiBootInit
- b _081BAC28
- .pool
-_081BABB4:
- adds r0, r6, r2
- str r0, [r4, 0x24]
- lsls r1, r7, 24
- movs r2, 0x80
- lsls r2, 19
- adds r0, r1, r2
- asrs r0, 24
- adds r2, r1, 0
- cmp r0, 0x8
- bhi _081BAC14
- lsls r0, 2
- ldr r1, =_081BABD8
- adds r0, r1
- ldr r0, [r0]
- mov pc, r0
- .pool
- .align 2, 0
-_081BABD8:
- .4byte _081BABFC
- .4byte _081BABFC
- .4byte _081BABFC
- .4byte _081BABFC
- .4byte _081BAC06
- .4byte _081BAC0C
- .4byte _081BAC0C
- .4byte _081BAC0C
- .4byte _081BAC0C
-_081BABFC:
- lsls r3, r5, 3
- asrs r1, r2, 24
- movs r0, 0x3
- subs r0, r1
- b _081BAC12
-_081BAC06:
- movs r0, 0x38
- adds r3, r5, 0
- b _081BAC12
-_081BAC0C:
- lsls r3, r5, 3
- asrs r0, r2, 24
- subs r0, 0x1
-_081BAC12:
- orrs r3, r0
-_081BAC14:
- movs r0, 0x3F
- ands r3, r0
- lsls r0, r3, 1
- movs r2, 0x7F
- negs r2, r2
- adds r1, r2, 0
- orrs r0, r1
- strb r0, [r4, 0x1C]
- movs r0, 0xD0
- strb r0, [r4, 0x18]
-_081BAC28:
- pop {r4-r7}
- pop {r0}
- bx r0
- thumb_func_end MultiBootStartMaster
-
- thumb_func_start MultiBootCheckComplete
-@ s32 MultiBootCheckComplete(MultiBootParam *mp)
-MultiBootCheckComplete: @ 81BAC30
- push {lr}
- ldrb r0, [r0, 0x18]
- cmp r0, 0xE9
- beq _081BAC3C
- movs r0, 0
- b _081BAC3E
-_081BAC3C:
- movs r0, 0x1
-_081BAC3E:
- pop {r1}
- bx r1
- thumb_func_end MultiBootCheckComplete
-
- thumb_func_start MultiBootHandShake
-@ int MultiBootHandShake(MultiBootParam *mp)
-MultiBootHandShake: @ 81BAC44
- push {r4-r6,lr}
- adds r3, r0, 0
- ldrb r0, [r3, 0x18]
- cmp r0, 0xE0
- beq _081BAC60
- cmp r0, 0xE0
- blt _081BAC70
- cmp r0, 0xE8
- bgt _081BAC70
- cmp r0, 0xE7
- blt _081BAC70
- movs r4, 0x3
- ldrb r5, [r3, 0x1E]
- b _081BACD0
-_081BAC60:
- movs r1, 0
- movs r0, 0xE1
- strb r0, [r3, 0x18]
- str r1, [r3, 0x4]
- movs r0, 0x80
- lsls r0, 13
- str r0, [r3]
- b _081BACC2
-_081BAC70:
- movs r4, 0x3
- ldrb r5, [r3, 0x1E]
- movs r6, 0x1
- ldr r1, =0x04000126
-_081BAC78:
- ldrh r0, [r1]
- adds r2, r0, 0
- adds r0, r5, 0
- asrs r0, r4
- ands r0, r6
- cmp r0, 0
- beq _081BAC8C
- ldr r0, [r3, 0x4]
- cmp r2, r0
- bne _081BAC60
-_081BAC8C:
- subs r1, 0x2
- subs r4, 0x1
- cmp r4, 0
- bne _081BAC78
- ldrb r0, [r3, 0x18]
- adds r0, 0x1
- strb r0, [r3, 0x18]
- ldr r1, [r3]
- ldrh r0, [r3]
- str r0, [r3, 0x4]
- cmp r1, 0
- bne _081BACBA
- ldr r0, [r3, 0x28]
- adds r1, r0, 0
- adds r1, 0xAC
- ldrb r1, [r1]
- adds r0, 0xAD
- ldrb r0, [r0]
- lsls r0, 8
- orrs r1, r0
- str r1, [r3, 0x4]
- lsls r1, 5
- str r1, [r3]
-_081BACBA:
- ldr r0, [r3]
- lsrs r0, 5
- str r0, [r3]
-_081BACC0:
- ldrh r1, [r3]
-_081BACC2:
- adds r0, r3, 0
- bl MultiBootSend
- b _081BAD28
- .pool
-_081BACD0:
- lsls r0, r4, 1
- ldr r1, =0x04000120
- adds r0, r1
- ldrh r0, [r0]
- adds r2, r0, 0
- adds r0, r5, 0
- asrs r0, r4
- movs r1, 0x1
- ands r0, r1
- cmp r0, 0
- beq _081BACEC
- ldr r0, [r3, 0x4]
- cmp r2, r0
- bne _081BAD1C
-_081BACEC:
- subs r4, 0x1
- cmp r4, 0
- bne _081BACD0
- ldrb r0, [r3, 0x18]
- adds r0, 0x1
- strb r0, [r3, 0x18]
- lsls r0, 24
- lsrs r0, 24
- cmp r0, 0xE9
- beq _081BAD26
- ldr r0, [r3, 0x28]
- adds r1, r0, 0
- adds r1, 0xAE
- ldrb r1, [r1]
- adds r0, 0xAF
- ldrb r0, [r0]
- lsls r0, 8
- orrs r1, r0
- str r1, [r3]
- str r1, [r3, 0x4]
- b _081BACC0
- .pool
-_081BAD1C:
- adds r0, r3, 0
- bl MultiBootInit
- movs r0, 0x71
- b _081BAD28
-_081BAD26:
- movs r0, 0
-_081BAD28:
- pop {r4-r6}
- pop {r1}
- bx r1
- thumb_func_end MultiBootHandShake
-
- thumb_func_start MultiBootWaitCycles
-@ void MultiBootWaitCycles(u32 cycles)
-MultiBootWaitCycles: @ 81BAD30
- mov r2, pc
- lsrs r2, 24
- movs r1, 0xC
- cmp r2, 0x2
- beq _081BAD42
- movs r1, 0xD
- cmp r2, 0x8
- beq _081BAD42
- movs r1, 0x4
-_081BAD42:
- subs r0, r1
- bgt _081BAD42
- bx lr
- thumb_func_end MultiBootWaitCycles
-
- thumb_func_start MultiBootWaitSendDone
-@ void MultiBootWaitSendDone(void)
-MultiBootWaitSendDone: @ 81BAD48
- push {r4,r5,lr}
- movs r2, 0
- ldr r3, =0x04000128
- ldrh r1, [r3]
- movs r0, 0x80
- ands r0, r1
- cmp r0, 0
- beq _081BAD6C
- ldr r5, =0x0000795c
- movs r4, 0x80
-_081BAD5C:
- adds r2, 0x1
- cmp r2, r5
- bgt _081BAD6C
- ldrh r1, [r3]
- adds r0, r4, 0
- ands r0, r1
- cmp r0, 0
- bne _081BAD5C
-_081BAD6C:
- movs r0, 0x96
- lsls r0, 2
- bl MultiBootWaitCycles
- pop {r4,r5}
- pop {r0}
- bx r0
- .pool
- thumb_func_end MultiBootWaitSendDone
-
- .align 2, 0 @ Don't pad with nop.
diff --git a/include/gba/gba.h b/include/gba/gba.h
index 26342cf88..42ae3cdde 100644
--- a/include/gba/gba.h
+++ b/include/gba/gba.h
@@ -4,6 +4,7 @@
#include "gba/defines.h"
#include "gba/io_reg.h"
#include "gba/types.h"
+#include "gba/multiboot.h"
#include "gba/syscall.h"
#include "gba/macro.h"
diff --git a/include/gba/io_reg.h b/include/gba/io_reg.h
index 0be92fa60..5234e5b6c 100644
--- a/include/gba/io_reg.h
+++ b/include/gba/io_reg.h
@@ -577,6 +577,8 @@
#define TIMER_ENABLE 0x80
// serial
+#define SIO_ID 0x0030 // Communication ID
+
#define SIO_8BIT_MODE 0x0000 // Normal 8-bit communication mode
#define SIO_32BIT_MODE 0x1000 // Normal 32-bit communication mode
#define SIO_MULTI_MODE 0x2000 // Multi-player communication mode
@@ -589,6 +591,7 @@
#define SIO_MULTI_SI 0x0004 // Multi-player communication SI terminal
#define SIO_MULTI_SD 0x0008 // SD terminal
+#define SIO_MULTI_BUSY 0x0080
#define SIO_ERROR 0x0040 // Detect error
#define SIO_START 0x0080 // Start transfer
diff --git a/include/gba/macro.h b/include/gba/macro.h
index 62d3e73fa..230fb4383 100644
--- a/include/gba/macro.h
+++ b/include/gba/macro.h
@@ -25,6 +25,8 @@
CPU_FAST_SET_SRC_FIXED | ((size)/(32/8) & 0x1FFFFF)); \
}
+#define CpuFastFill16(value, dest, size) CpuFastFill(((value) << 16) | (value), (dest), (size))
+
#define CpuFastCopy(src, dest, size) CpuFastSet(src, dest, ((size)/(32/8) & 0x1FFFFF))
#define DmaSet(dmaNum, src, dest, control) \
diff --git a/include/gba/multiboot.h b/include/gba/multiboot.h
new file mode 100644
index 000000000..e88b43a19
--- /dev/null
+++ b/include/gba/multiboot.h
@@ -0,0 +1,55 @@
+#ifndef GUARD_GBA_MULTIBOOT_H
+#define GUARD_GBA_MULTIBOOT_H
+
+#define MULTIBOOT_NCHILD 3 // Maximum number of slaves
+#define MULTIBOOT_HEADER_SIZE 0xc0 // Header size
+#define MULTIBOOT_SEND_SIZE_MIN 0x100 // Minimum transmission size
+#define MULTIBOOT_SEND_SIZE_MAX 0x40000 // Maximum transmission size
+
+struct MultiBootParam
+{
+ u32 system_work[5];
+ u8 handshake_data;
+ u8 padding;
+ u16 handshake_timeout;
+ u8 probe_count;
+ u8 client_data[MULTIBOOT_NCHILD];
+ u8 palette_data;
+ u8 response_bit;
+ u8 client_bit;
+ u8 reserved1;
+ u8 *boot_srcp;
+ u8 *boot_endp;
+ u8 *masterp;
+ u8 *reserved2[MULTIBOOT_NCHILD];
+ u32 system_work2[4];
+ u8 sendflag;
+ u8 probe_target_bit;
+ u8 check_wait;
+ u8 server_type;
+};
+
+#define MULTIBOOT_ERROR_04 0x04
+#define MULTIBOOT_ERROR_08 0x08
+#define MULTIBOOT_ERROR_0c 0x0c
+#define MULTIBOOT_ERROR_40 0x40
+#define MULTIBOOT_ERROR_44 0x44
+#define MULTIBOOT_ERROR_48 0x48
+#define MULTIBOOT_ERROR_4c 0x4c
+#define MULTIBOOT_ERROR_80 0x80
+#define MULTIBOOT_ERROR_84 0x84
+#define MULTIBOOT_ERROR_88 0x88
+#define MULTIBOOT_ERROR_8c 0x8c
+#define MULTIBOOT_ERROR_NO_PROBE_TARGET 0x50
+#define MULTIBOOT_ERROR_NO_DLREADY 0x60
+#define MULTIBOOT_ERROR_BOOT_FAILURE 0x70
+#define MULTIBOOT_ERROR_HANDSHAKE_FAILURE 0x71
+
+#define MULTIBOOT_CONNECTION_CHECK_WAIT 15
+
+#define MULTIBOOT_SERVER_TYPE_NORMAL 0
+#define MULTIBOOT_SERVER_TYPE_QUICK 1
+
+#define MULTIBOOT_HANDSHAKE_TIMEOUT 400
+
+#endif // GUARD_GBA_MULTIBOOT_H
diff --git a/include/gba/syscall.h b/include/gba/syscall.h
index 3f41abba1..deddec5ba 100644
--- a/include/gba/syscall.h
+++ b/include/gba/syscall.h
@@ -17,6 +17,10 @@ void RegisterRamReset(u32 resetFlags);
void VBlankIntrWait(void);
+u16 Sqrt(u32 num);
+
+u16 ArcTan2(s16 x, s16 y);
+
#define CPU_SET_SRC_FIXED 0x01000000
#define CPU_SET_16BIT 0x00000000
#define CPU_SET_32BIT 0x04000000
@@ -27,6 +31,18 @@ void CpuSet(const void *src, void *dest, u32 control);
void CpuFastSet(const void *src, void *dest, u32 control);
+void BgAffineSet(struct BgAffineSrcData *src, struct BgAffineDstData *dest, s32 count);
+
void ObjAffineSet(struct ObjAffineSrcData *src, void *dest, s32 count, s32 offset);
+void LZ77UnCompWram(const void *src, void *dest);
+
+void LZ77UnCompVram(const void *src, void *dest);
+
+void RLUnCompWram(const void *src, void *dest);
+
+void RLUnCompVram(const void *src, void *dest);
+
+int MultiBoot(struct MultiBootParam *mp);
+
#endif // GUARD_GBA_SYSCALL_H
diff --git a/include/gba/types.h b/include/gba/types.h
index be7390d5a..fd8a20a4c 100644
--- a/include/gba/types.h
+++ b/include/gba/types.h
@@ -74,6 +74,27 @@ struct OamData
#define ST_OAM_H_RECTANGLE 1
#define ST_OAM_V_RECTANGLE 2
+struct BgAffineSrcData
+{
+ s32 texX;
+ s32 texY;
+ s16 scrX;
+ s16 scrY;
+ s16 sx;
+ s16 sy;
+ u16 alpha;
+};
+
+struct BgAffineDstData
+{
+ s16 pa;
+ s16 pb;
+ s16 pc;
+ s16 pd;
+ s32 dx;
+ s32 dy;
+};
+
struct ObjAffineSrcData
{
s16 xScale;
diff --git a/include/multiboot.h b/include/multiboot.h
new file mode 100644
index 000000000..950c853d0
--- /dev/null
+++ b/include/multiboot.h
@@ -0,0 +1,21 @@
+#ifndef GUARD_MULTIBOOT_H
+#define GUARD_MULTIBOOT_H
+
+#define MULTIBOOT_MASTER_INFO 0x62
+#define MULTIBOOT_CLIENT_INFO 0x72
+#define MULTIBOOT_MASTER_START_PROBE 0x61
+#define MULTIBOOT_MASTER_REQUEST_DLREADY 0x63
+#define MULTIBOOT_CLIENT_DLREADY 0x73
+#define MULTIBOOT_MASTER_START_DL 0x64
+#define MULTIBOOT_MASTER_REQUEST_CRC 0x65
+#define MULTIBOOT_CLIENT_CALC_CRC 0x74
+#define MULTIBOOT_CLIENT_CRCREADY 0x75
+#define MULTIBOOT_MASTER_VERIFY_CRC 0x66
+
+void MultiBootInit(struct MultiBootParam *mp);
+int MultiBootMain(struct MultiBootParam *mp);
+void MultiBootStartProbe(struct MultiBootParam *mp);
+void MultiBootStartMaster(struct MultiBootParam *mp, u8 *srcp, int length, u8 palette_color, s8 palette_speed);
+int MultiBootCheckComplete(struct MultiBootParam *mp);
+
+#endif // GUARD_MULTIBOOT_H
diff --git a/ld_script.txt b/ld_script.txt
index 31b058496..520aaa6e0 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -187,7 +187,7 @@ SECTIONS {
asm/rom_817B064.o(.text);
asm/front_pic_anim.o(.text);
asm/rom_8184DA4.o(.text);
- asm/multiboot.o(.text);
+ src/multiboot.o(.text);
asm/rom_81BAD84.o(.text);
} =0
diff --git a/src/multiboot.c b/src/multiboot.c
new file mode 100644
index 000000000..80291ff46
--- /dev/null
+++ b/src/multiboot.c
@@ -0,0 +1,470 @@
+#include "gba/gba.h"
+#include "multiboot.h"
+
+static u16 MultiBoot_required_data[MULTIBOOT_NCHILD];
+
+static int MultiBootSend(struct MultiBootParam *mp, u16 data);
+static int MultiBootHandShake(struct MultiBootParam *mp);
+static void MultiBootWaitCycles(u32 cycles);
+static void MultiBootWaitSendDone(void);
+
+void MultiBootInit(struct MultiBootParam *mp)
+{
+ mp->client_bit = 0;
+ mp->probe_count = 0;
+ mp->response_bit = 0;
+
+ mp->check_wait = MULTIBOOT_CONNECTION_CHECK_WAIT;
+ mp->sendflag = 0;
+
+ mp->handshake_timeout = 0;
+
+ REG_RCNT = 0;
+ REG_SIOCNT = SIO_MULTI_MODE | SIO_115200_BPS;
+ REG_SIODATA8 = 0;
+}
+
+int MultiBootMain(struct MultiBootParam *mp)
+{
+ int i;
+ int j;
+ int k;
+
+ if (MultiBootCheckComplete(mp))
+ {
+ return 0;
+ }
+
+ if (mp->check_wait > MULTIBOOT_CONNECTION_CHECK_WAIT)
+ {
+ mp->check_wait--;
+ return 0;
+ }
+
+output_burst:
+ if (mp->sendflag)
+ {
+ mp->sendflag = 0;
+
+ i = REG_SIOCNT & (SIO_MULTI_BUSY | SIO_ERROR | SIO_ID | SIO_MULTI_SD | SIO_MULTI_SI);
+ if (i != SIO_MULTI_SD)
+ {
+ MultiBootInit(mp);
+ return i ^ SIO_MULTI_SD;
+ }
+ }
+
+ if (mp->probe_count >= 0xe0)
+ {
+ i = MultiBootHandShake(mp);
+ if (i)
+ {
+ return i;
+ }
+
+ if (mp->server_type == MULTIBOOT_SERVER_TYPE_QUICK
+ && mp->probe_count > 0xe1
+ && MultiBootCheckComplete(mp) == 0)
+ {
+ MultiBootWaitSendDone();
+ goto output_burst;
+ }
+
+ if (MultiBootCheckComplete(mp) == 0)
+ {
+ if (mp->handshake_timeout == 0)
+ {
+ MultiBootInit(mp);
+ return MULTIBOOT_ERROR_HANDSHAKE_FAILURE;
+ }
+ mp->handshake_timeout--;
+ }
+
+ return 0;
+ }
+
+ switch (mp->probe_count)
+ {
+ case 0:
+ k = 0x0e;
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ if (*(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2) != 0xffff)
+ {
+ break;
+ }
+ k >>= 1;
+ }
+
+ k &= 0x0e;
+ mp->response_bit = k;
+
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if (mp->client_bit & (1 << i))
+ {
+ if (j != ((MULTIBOOT_CLIENT_INFO << 8) | (1 << i)))
+ {
+ k = 0;
+ break;
+ }
+ }
+ }
+
+ mp->client_bit &= k;
+
+ if (k == 0)
+ {
+ mp->check_wait = MULTIBOOT_CONNECTION_CHECK_WAIT;
+ }
+
+ if (mp->check_wait)
+ {
+ mp->check_wait--;
+ }
+ else
+ {
+ if (mp->response_bit != mp->client_bit)
+ {
+ MultiBootStartProbe(mp);
+ goto case_1;
+ }
+ }
+
+ output_master_info:
+ return MultiBootSend(mp, (MULTIBOOT_MASTER_INFO << 8) | mp->client_bit);
+
+ case_1:
+ case 1:
+ mp->probe_target_bit = 0;
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if ((j >> 8) == MULTIBOOT_CLIENT_INFO)
+ {
+ MultiBoot_required_data[i - 1] = j;
+ j &= 0xff;
+ if (j == (1 << i))
+ {
+ mp->probe_target_bit |= j;
+ }
+ }
+ }
+
+ if (mp->response_bit != mp->probe_target_bit)
+ {
+ goto output_master_info;
+ }
+
+ mp->probe_count = 2;
+ return MultiBootSend(mp, (MULTIBOOT_MASTER_START_PROBE << 8) | mp->probe_target_bit);
+
+ case 2:
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ if (mp->probe_target_bit & (1 << i))
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if (j != MultiBoot_required_data[i - 1])
+ {
+ mp->probe_target_bit ^= 1 << i;
+ }
+ }
+ }
+ goto output_header;
+
+ case 0xd0:
+ k = 1;
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ mp->client_data[i - 1] = j;
+ if (mp->probe_target_bit & (1 << i))
+ {
+ if ((j >> 8) != MULTIBOOT_CLIENT_INFO
+ && (j >> 8) != MULTIBOOT_CLIENT_DLREADY)
+ {
+ MultiBootInit(mp);
+ return MULTIBOOT_ERROR_NO_DLREADY;
+ }
+ if (j == MultiBoot_required_data[i - 1])
+ {
+ k = 0;
+ }
+ }
+ }
+
+ if (k == 0)
+ {
+ return MultiBootSend(mp, (MULTIBOOT_MASTER_REQUEST_DLREADY << 8) | mp->palette_data);
+ }
+
+ mp->probe_count = 0xd1;
+
+ k = 0x11;
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ k += mp->client_data[i - 1];
+ }
+ mp->handshake_data = k;
+ return MultiBootSend(mp, (MULTIBOOT_MASTER_START_DL << 8) | (k & 0xff));
+
+ case 0xd1:
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if (mp->probe_target_bit & (1 << i))
+ {
+ if ((j >> 8) != MULTIBOOT_CLIENT_DLREADY)
+ {
+ MultiBootInit(mp);
+ return MULTIBOOT_ERROR_NO_DLREADY;
+ }
+ }
+ }
+
+ i = MultiBoot(mp);
+
+ if (i == 0)
+ {
+ mp->probe_count = 0xe0;
+ mp->handshake_timeout = MULTIBOOT_HANDSHAKE_TIMEOUT;
+ return 0;
+ }
+ MultiBootInit(mp);
+ mp->check_wait = MULTIBOOT_CONNECTION_CHECK_WAIT * 2;
+ return MULTIBOOT_ERROR_BOOT_FAILURE;
+
+ default:
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ if (mp->probe_target_bit & (1 << i))
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if ((j >> 8) != (MULTIBOOT_MASTER_START_PROBE + 1 - (mp->probe_count >> 1))
+ || ((j & 0xff) != (1 << i)))
+ {
+ mp->probe_target_bit ^= 1 << i;
+ }
+ }
+ }
+
+ if (mp->probe_count == 0xc4)
+ {
+ mp->client_bit = mp->probe_target_bit & 0x0e;
+ mp->probe_count = 0;
+ goto output_master_info;
+ }
+
+ output_header:
+ if (mp->probe_target_bit == 0)
+ {
+ MultiBootInit(mp);
+ return MULTIBOOT_ERROR_NO_PROBE_TARGET;
+ }
+
+ mp->probe_count += 2;
+ if (mp->probe_count == 0xc4)
+ {
+ goto output_master_info;
+ }
+ i = MultiBootSend(mp,
+ (mp->masterp[mp->probe_count - 4 + 1] << 8)
+ | mp->masterp[mp->probe_count - 4]);
+
+ if (i)
+ {
+ return i;
+ }
+ if (mp->server_type == MULTIBOOT_SERVER_TYPE_QUICK)
+ {
+ MultiBootWaitSendDone();
+ goto output_burst;
+ }
+ return 0;
+ }
+}
+
+static int MultiBootSend(struct MultiBootParam *mp, u16 data)
+{
+ int i;
+
+ i = REG_SIOCNT & (SIO_MULTI_BUSY | SIO_MULTI_SD | SIO_MULTI_SI);
+ if (i != SIO_MULTI_SD)
+ {
+ MultiBootInit(mp);
+ return i ^ SIO_MULTI_SD;
+ }
+
+ REG_SIODATA8 = data;
+ REG_SIOCNT = SIO_MULTI_MODE | SIO_START | SIO_115200_BPS;
+
+ mp->sendflag = 1;
+ return 0;
+}
+
+void MultiBootStartProbe(struct MultiBootParam *mp)
+{
+ if (mp->probe_count != 0)
+ {
+ MultiBootInit(mp);
+ return;
+ }
+ mp->check_wait = 0;
+ mp->client_bit = 0;
+ mp->probe_count = 1;
+}
+
+void MultiBootStartMaster(struct MultiBootParam *mp, u8 *srcp, int length, u8 palette_color, s8 palette_speed)
+{
+ int i = 0;
+
+ if (mp->probe_count != 0
+ || mp->client_bit == 0
+ || mp->check_wait != 0)
+ {
+ MultiBootInit(mp);
+ return;
+ }
+
+ mp->boot_srcp = srcp;
+ length = (length + 15) & ~15;
+ if (length < MULTIBOOT_SEND_SIZE_MIN || length > MULTIBOOT_SEND_SIZE_MAX)
+ {
+ MultiBootInit(mp);
+ return;
+ }
+
+ mp->boot_endp = srcp + length;
+
+ switch (palette_speed)
+ {
+ case -4:
+ case -3:
+ case -2:
+ case -1:
+ i = (palette_color << 3) | (3 - palette_speed);
+ break;
+ case 0:
+ i = 0x38 | palette_color;
+ break;
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ i = (palette_color << 3) | (palette_speed - 1);
+ break;
+ }
+
+ mp->palette_data = ((i & 0x3f) << 1) | 0x81;
+ mp->probe_count = 0xd0;
+}
+
+int MultiBootCheckComplete(struct MultiBootParam *mp)
+{
+ if (mp->probe_count == 0xe9)
+ {
+ return 1;
+ }
+
+ return 0;
+}
+
+static int MultiBootHandShake(struct MultiBootParam *mp)
+{
+ int i, j;
+
+#define send_data (mp->system_work[0])
+#define must_data (mp->system_work[1])
+
+ switch (mp->probe_count)
+ {
+ case_0xe0:
+ case 0xe0:
+ mp->probe_count = 0xe1;
+ must_data = 0x0000;
+ send_data = 0x100000;
+ return MultiBootSend(mp, 0x0000);
+
+ default:
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if ((mp->client_bit & (1 << i))
+ && j != must_data)
+ {
+ goto case_0xe0;
+ }
+ }
+ mp->probe_count++;
+ must_data = send_data & 0xffff;
+ if (send_data == 0x0000)
+ {
+ must_data = mp->masterp[0xac] | (mp->masterp[0xad] << 8);
+ send_data = must_data << 5;
+ }
+ send_data >>= 5;
+ output_common:
+ return MultiBootSend(mp, send_data);
+
+ case 0xe7:
+ case 0xe8:
+ for (i = MULTIBOOT_NCHILD; i != 0; i--)
+ {
+ j = *(vu16 *)(REG_ADDR_SIOMULTI0 + i * 2);
+ if ((mp->client_bit & (1 << i)) && j != must_data)
+ {
+ MultiBootInit(mp);
+ return MULTIBOOT_ERROR_HANDSHAKE_FAILURE;
+ }
+ }
+
+ mp->probe_count++;
+ if (mp->probe_count == 0xe9)
+ {
+ return 0;
+ }
+
+ send_data = mp->masterp[0xae] | (mp->masterp[0xaf] << 8);
+ must_data = send_data;
+ goto output_common;
+ }
+
+#undef send_data
+#undef must_data
+}
+
+static void MultiBootWaitCycles(u32 cycles)
+{
+ asm("mov r2, pc");
+ asm("lsr r2, #24");
+ asm("mov r1, #12");
+ asm("cmp r2, #0x02");
+ asm("beq MultiBootWaitCyclesLoop");
+
+ asm("mov r1, #13");
+ asm("cmp r2, #0x08");
+ asm("beq MultiBootWaitCyclesLoop");
+
+ asm("mov r1, #4");
+
+ asm("MultiBootWaitCyclesLoop:");
+ asm("sub r0, r1");
+ asm("bgt MultiBootWaitCyclesLoop");
+}
+
+static void MultiBootWaitSendDone(void)
+{
+ int i;
+
+ for (i = 0; i < 31069; i++)
+ {
+ if ((REG_SIOCNT & SIO_START) == 0)
+ {
+ break;
+ }
+ }
+
+ MultiBootWaitCycles(600);
+}
diff --git a/sym_bss.txt b/sym_bss.txt
index 734c4ec4c..e10bd14ba 100644
--- a/sym_bss.txt
+++ b/sym_bss.txt
@@ -433,8 +433,9 @@ gUnknown_03001294: @ 3001294
gUnknown_03001298: @ 3001298
.space 0x4
-gUnknown_0300129C: @ 300129C
- .space 0xC
+ .include "src/multiboot.o"
+
+ .space 0x4 @ XXX: why is this needed?
gUnknown_030012A8: @ 30012A8
.space 0x10
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-26 03:56:48 +0000