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-rw-r--r--asm/multiboot.s924
-rw-r--r--include/gba/multiboot.h6
-rw-r--r--ld_script.txt2
-rw-r--r--src/multiboot.c420
-rw-r--r--sym_bss.txt4
5 files changed, 425 insertions, 931 deletions
diff --git a/asm/multiboot.s b/asm/multiboot.s
deleted file mode 100644
index 615995301..000000000
--- a/asm/multiboot.s
+++ /dev/null
@@ -1,924 +0,0 @@
- .include "asm/macros.inc"
- .include "constants/constants.inc"
-
- .syntax unified
-
- .text
-
- thumb_func_start MultiBootInit
-MultiBootInit: @ 800BC20
- 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, _0800BC4C @ =0x04000134
- strh r1, [r0]
- ldr r2, _0800BC50 @ =0x04000128
- ldr r3, _0800BC54 @ =0x00002003
- adds r0, r3, 0
- strh r0, [r2]
- ldr r0, _0800BC58 @ =0x0400012a
- strh r1, [r0]
- bx lr
- .align 2, 0
-_0800BC4C: .4byte 0x04000134
-_0800BC50: .4byte 0x04000128
-_0800BC54: .4byte 0x00002003
-_0800BC58: .4byte 0x0400012a
- thumb_func_end MultiBootInit
-
- thumb_func_start MultiBootMain
-MultiBootMain: @ 800BC5C
- 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 _0800BC72
- b _0800C03A
-_0800BC72:
- adds r0, r7, 0
- adds r0, 0x4A
- ldrb r1, [r0]
- mov r10, r0
- cmp r1, 0xF
- bls _0800BC86
- subs r0, r1, 0x1
- mov r1, r10
- strb r0, [r1]
- b _0800C03A
-_0800BC86:
- adds r1, r7, 0
- adds r1, 0x48
- ldrb r0, [r1]
- cmp r0, 0
- beq _0800BCB0
- movs r0, 0
- strb r0, [r1]
- ldr r0, _0800BCAC @ =0x04000128
- ldrh r0, [r0]
- movs r5, 0xFC
- ands r5, r0
- cmp r5, 0x8
- beq _0800BCB0
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x8
- eors r0, r5
- b _0800C03C
- .align 2, 0
-_0800BCAC: .4byte 0x04000128
-_0800BCB0:
- ldrb r0, [r7, 0x18]
- cmp r0, 0xDF
- bls _0800BD02
- adds r0, r7, 0
- bl MultiBootHandShake
- adds r5, r0, 0
- cmp r5, 0
- beq _0800BCC4
- b _0800C03C
-_0800BCC4:
- adds r0, r7, 0
- adds r0, 0x4B
- ldrb r0, [r0]
- cmp r0, 0x1
- bne _0800BCE0
- ldrb r0, [r7, 0x18]
- cmp r0, 0xE1
- bls _0800BCE0
- adds r0, r7, 0
- bl MultiBootCheckComplete
- cmp r0, 0
- bne _0800BCE0
- b _0800C02A
-_0800BCE0:
- adds r0, r7, 0
- bl MultiBootCheckComplete
- cmp r0, 0
- beq _0800BCEC
- b _0800C03A
-_0800BCEC:
- ldrh r0, [r7, 0x16]
- cmp r0, 0
- bne _0800BCFC
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x71
- b _0800C03C
-_0800BCFC:
- subs r0, 0x1
- strh r0, [r7, 0x16]
- b _0800C03A
-_0800BD02:
- ldrb r0, [r7, 0x18]
- cmp r0, 0x2
- bne _0800BD0A
- b _0800BE40
-_0800BD0A:
- cmp r0, 0x2
- bgt _0800BD18
- cmp r0, 0
- beq _0800BD26
- cmp r0, 0x1
- beq _0800BDE2
- b _0800BF78
-_0800BD18:
- cmp r0, 0xD0
- bne _0800BD1E
- b _0800BE8C
-_0800BD1E:
- cmp r0, 0xD1
- bne _0800BD24
- b _0800BF26
-_0800BD24:
- b _0800BF78
-_0800BD26:
- movs r3, 0xE
- movs r5, 0x3
- ldr r0, _0800BD6C @ =0x04000120
- ldrh r0, [r0, 0x6]
- adds r1, r0, 0
- ldr r0, _0800BD70 @ =0x0000ffff
- ldrb r2, [r7, 0x1E]
- adds r6, r2, 0
- cmp r1, r0
- bne _0800BD4E
- adds r4, r1, 0
- ldr r1, _0800BD74 @ =0x04000126
-_0800BD3E:
- asrs r3, 1
- subs r1, 0x2
- subs r5, 0x1
- cmp r5, 0
- beq _0800BD4E
- ldrh r0, [r1]
- cmp r0, r4
- beq _0800BD3E
-_0800BD4E:
- movs r0, 0xE
- ands r3, r0
- strb r3, [r7, 0x1D]
- movs r5, 0x3
- ldr r0, _0800BD6C @ =0x04000120
- ldrh r0, [r0, 0x6]
- adds r4, r0, 0
- asrs r0, r2, 3
- movs r1, 0x1
- ands r0, r1
- cmp r0, 0
- beq _0800BD7C
- ldr r0, _0800BD78 @ =0x00007208
- b _0800BDA2
- .align 2, 0
-_0800BD6C: .4byte 0x04000120
-_0800BD70: .4byte 0x0000ffff
-_0800BD74: .4byte 0x04000126
-_0800BD78: .4byte 0x00007208
-_0800BD7C:
- subs r5, 0x1
- cmp r5, 0
- beq _0800BDA8
- lsls r0, r5, 1
- ldr r1, _0800BDD0 @ =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 _0800BD7C
- adds r0, r1, 0
- lsls r0, r5
- movs r1, 0xE4
- lsls r1, 7
- orrs r0, r1
-_0800BDA2:
- cmp r4, r0
- beq _0800BD7C
- movs r3, 0
-_0800BDA8:
- adds r0, r3, 0
- ands r0, r6
- strb r0, [r7, 0x1E]
- cmp r3, 0
- bne _0800BDB8
- movs r0, 0xF
- mov r2, r10
- strb r0, [r2]
-_0800BDB8:
- mov r1, r10
- ldrb r0, [r1]
- cmp r0, 0
- bne _0800BDD4
- ldrb r0, [r7, 0x1D]
- ldrb r2, [r7, 0x1E]
- cmp r0, r2
- beq _0800BDDA
- adds r0, r7, 0
- bl MultiBootStartProbe
- b _0800BDE2
- .align 2, 0
-_0800BDD0: .4byte 0x04000120
-_0800BDD4:
- subs r0, 0x1
- mov r1, r10
- strb r0, [r1]
-_0800BDDA:
- ldrb r1, [r7, 0x1E]
- movs r2, 0xC4
- lsls r2, 7
- b _0800BEE2
-_0800BDE2:
- adds r1, r7, 0
- adds r1, 0x49
- movs r0, 0
- strb r0, [r1]
- movs r5, 0x3
- mov r12, r1
- ldr r3, _0800BE38 @ =gUnknown_3000E6C
-_0800BDF0:
- lsls r0, r5, 1
- ldr r2, _0800BE3C @ =0x04000120
- adds r0, r2
- ldrh r0, [r0]
- adds r4, r0, 0
- asrs r0, r4, 8
- subs r2, r5, 0x1
- cmp r0, 0x72
- bne _0800BE1A
- 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 _0800BE1A
- ldrb r0, [r1]
- orrs r4, r0
- strb r4, [r1]
-_0800BE1A:
- adds r5, r2, 0
- cmp r5, 0
- bne _0800BDF0
- ldrb r0, [r7, 0x1D]
- mov r1, r12
- ldrb r1, [r1]
- cmp r0, r1
- bne _0800BDDA
- movs r0, 0x2
- strb r0, [r7, 0x18]
- mov r2, r12
- ldrb r1, [r2]
- movs r2, 0xC2
- lsls r2, 7
- b _0800BEE2
- .align 2, 0
-_0800BE38: .4byte gUnknown_3000E6C
-_0800BE3C: .4byte 0x04000120
-_0800BE40:
- movs r5, 0x3
- movs r0, 0x49
- adds r0, r7
- mov r12, r0
- mov r4, r12
- movs r6, 0x1
- ldr r1, _0800BE84 @ =gUnknown_3000E6C
- mov r9, r1
- ldr r2, _0800BE88 @ =0x04000120
- mov r8, r2
-_0800BE54:
- ldrb r3, [r4]
- adds r0, r3, 0
- asrs r0, r5
- ands r0, r6
- subs r2, r5, 0x1
- cmp r0, 0
- beq _0800BE7A
- lsls r0, r5, 1
- add r0, r8
- ldrh r1, [r0]
- lsls r0, r2, 1
- add r0, r9
- ldrh r0, [r0]
- cmp r1, r0
- beq _0800BE7A
- adds r0, r6, 0
- lsls r0, r5
- eors r3, r0
- strb r3, [r4]
-_0800BE7A:
- adds r5, r2, 0
- cmp r5, 0
- bne _0800BE54
- b _0800BFE0
- .align 2, 0
-_0800BE84: .4byte gUnknown_3000E6C
-_0800BE88: .4byte 0x04000120
-_0800BE8C:
- movs r3, 0x1
- movs r5, 0x3
- movs r0, 0x49
- adds r0, r7
- mov r12, r0
- adds r6, r7, 0
- adds r6, 0x19
- ldr r1, _0800BEF0 @ =gUnknown_3000E6C
- mov r8, r1
-_0800BE9E:
- lsls r0, r5, 1
- ldr r2, _0800BEF4 @ =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 _0800BED2
- asrs r0, r4, 8
- subs r0, 0x72
- cmp r0, 0x1
- bls _0800BEC6
- b _0800C030
-_0800BEC6:
- lsls r0, r2, 1
- add r0, r8
- ldrh r0, [r0]
- cmp r4, r0
- bne _0800BED2
- movs r3, 0
-_0800BED2:
- adds r5, r2, 0
- cmp r5, 0
- bne _0800BE9E
- cmp r3, 0
- bne _0800BEF8
- ldrb r1, [r7, 0x1C]
- movs r2, 0xC6
- lsls r2, 7
-_0800BEE2:
- adds r0, r2, 0
- orrs r1, r0
- adds r0, r7, 0
- bl MultiBootSend
- b _0800C03C
- .align 2, 0
-_0800BEF0: .4byte gUnknown_3000E6C
-_0800BEF4: .4byte 0x04000120
-_0800BEF8:
- movs r0, 0xD1
- strb r0, [r7, 0x18]
- movs r3, 0x11
- movs r5, 0x3
- adds r1, r6, 0x2
-_0800BF02:
- ldrb r0, [r1]
- adds r3, r0
- subs r1, 0x1
- subs r5, 0x1
- cmp r5, 0
- bne _0800BF02
- 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 _0800C03C
-_0800BF26:
- movs r5, 0x3
- movs r2, 0x49
- ldrb r1, [r2, r7]
- ldr r2, _0800BF64 @ =0x04000126
- movs r3, 0x1
-_0800BF30:
- ldrh r0, [r2]
- adds r4, r0, 0
- adds r0, r1, 0
- asrs r0, r5
- ands r0, r3
- cmp r0, 0
- beq _0800BF44
- asrs r0, r4, 8
- cmp r0, 0x73
- bne _0800C030
-_0800BF44:
- subs r2, 0x2
- subs r5, 0x1
- cmp r5, 0
- bne _0800BF30
- adds r0, r7, 0
- bl MultiBoot
- adds r5, r0, 0
- cmp r5, 0
- bne _0800BF68
- movs r0, 0xE0
- strb r0, [r7, 0x18]
- adds r0, 0xB0
- strh r0, [r7, 0x16]
- b _0800C03A
- .align 2, 0
-_0800BF64: .4byte 0x04000126
-_0800BF68:
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x1E
- mov r1, r10
- strb r0, [r1]
- movs r0, 0x70
- b _0800C03C
-_0800BF78:
- movs r5, 0x3
- movs r2, 0x49
- adds r2, r7
- mov r12, r2
- mov r8, r12
- movs r0, 0x1
- mov r9, r0
-_0800BF86:
- mov r1, r8
- ldrb r6, [r1]
- adds r0, r6, 0
- asrs r0, r5
- mov r2, r9
- ands r0, r2
- cmp r0, 0
- beq _0800BFC0
- lsls r0, r5, 1
- ldr r1, _0800BFDC @ =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 _0800BFBA
- movs r0, 0xFF
- ands r4, r0
- cmp r4, r3
- beq _0800BFC0
-_0800BFBA:
- eors r6, r3
- mov r2, r8
- strb r6, [r2]
-_0800BFC0:
- subs r5, 0x1
- cmp r5, 0
- bne _0800BF86
- ldrb r0, [r7, 0x18]
- cmp r0, 0xC4
- bne _0800BFE0
- mov r0, r12
- ldrb r1, [r0]
- movs r0, 0xE
- ands r0, r1
- strb r0, [r7, 0x1E]
- strb r5, [r7, 0x18]
- b _0800BDDA
- .align 2, 0
-_0800BFDC: .4byte 0x04000120
-_0800BFE0:
- mov r1, r12
- ldrb r0, [r1]
- cmp r0, 0
- bne _0800BFF2
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x50
- b _0800C03C
-_0800BFF2:
- ldrb r0, [r7, 0x18]
- adds r0, 0x2
- strb r0, [r7, 0x18]
- lsls r0, 24
- lsrs r0, 24
- cmp r0, 0xC4
- bne _0800C002
- b _0800BDDA
-_0800C002:
- 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 _0800C03C
- adds r0, r7, 0
- adds r0, 0x4B
- ldrb r0, [r0]
- cmp r0, 0x1
- bne _0800C03A
-_0800C02A:
- bl MultiBootWaitSendDone
- b _0800BC86
-_0800C030:
- adds r0, r7, 0
- bl MultiBootInit
- movs r0, 0x60
- b _0800C03C
-_0800C03A:
- movs r0, 0
-_0800C03C:
- 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
-MultiBootSend: @ 800C04C
- push {r4,lr}
- adds r2, r0, 0
- lsls r1, 16
- lsrs r1, 16
- ldr r3, _0800C078 @ =0x04000128
- ldrh r0, [r3]
- movs r4, 0x8C
- ands r4, r0
- cmp r4, 0x8
- bne _0800C084
- ldr r0, _0800C07C @ =0x0400012a
- strh r1, [r0]
- ldr r1, _0800C080 @ =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 _0800C090
- .align 2, 0
-_0800C078: .4byte 0x04000128
-_0800C07C: .4byte 0x0400012a
-_0800C080: .4byte 0x00002083
-_0800C084:
- adds r0, r2, 0
- bl MultiBootInit
- movs r0, 0x8
- eors r4, r0
- adds r0, r4, 0
-_0800C090:
- pop {r4}
- pop {r1}
- bx r1
- thumb_func_end MultiBootSend
-
- thumb_func_start MultiBootStartProbe
-MultiBootStartProbe: @ 800C098
- push {lr}
- adds r1, r0, 0
- ldrb r0, [r1, 0x18]
- cmp r0, 0
- beq _0800C0AA
- adds r0, r1, 0
- bl MultiBootInit
- b _0800C0B6
-_0800C0AA:
- adds r2, r1, 0
- adds r2, 0x4A
- strb r0, [r2]
- strb r0, [r1, 0x1E]
- movs r0, 0x1
- strb r0, [r1, 0x18]
-_0800C0B6:
- pop {r0}
- bx r0
- thumb_func_end MultiBootStartProbe
-
- thumb_func_start MultiBootStartMaster
-MultiBootStartMaster: @ 800C0BC
- 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 _0800C0F8
- ldrb r0, [r4, 0x1E]
- cmp r0, 0
- beq _0800C0F8
- adds r0, r4, 0
- adds r0, 0x4A
- ldrb r0, [r0]
- cmp r0, 0
- bne _0800C0F8
- 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, _0800C100 @ =0x0003ff00
- cmp r1, r0
- bls _0800C104
-_0800C0F8:
- adds r0, r4, 0
- bl MultiBootInit
- b _0800C178
- .align 2, 0
-_0800C100: .4byte 0x0003ff00
-_0800C104:
- 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 _0800C164
- lsls r0, 2
- ldr r1, _0800C124 @ =_0800C128
- adds r0, r1
- ldr r0, [r0]
- mov pc, r0
- .align 2, 0
-_0800C124: .4byte _0800C128
- .align 2, 0
-_0800C128:
- .4byte _0800C14C
- .4byte _0800C14C
- .4byte _0800C14C
- .4byte _0800C14C
- .4byte _0800C156
- .4byte _0800C15C
- .4byte _0800C15C
- .4byte _0800C15C
- .4byte _0800C15C
-_0800C14C:
- lsls r3, r5, 3
- asrs r1, r2, 24
- movs r0, 0x3
- subs r0, r1
- b _0800C162
-_0800C156:
- movs r0, 0x38
- adds r3, r5, 0
- b _0800C162
-_0800C15C:
- lsls r3, r5, 3
- asrs r0, r2, 24
- subs r0, 0x1
-_0800C162:
- orrs r3, r0
-_0800C164:
- 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]
-_0800C178:
- pop {r4-r7}
- pop {r0}
- bx r0
- thumb_func_end MultiBootStartMaster
-
- thumb_func_start MultiBootCheckComplete
-MultiBootCheckComplete: @ 800C180
- push {lr}
- ldrb r0, [r0, 0x18]
- cmp r0, 0xE9
- beq _0800C18C
- movs r0, 0
- b _0800C18E
-_0800C18C:
- movs r0, 0x1
-_0800C18E:
- pop {r1}
- bx r1
- thumb_func_end MultiBootCheckComplete
-
- thumb_func_start MultiBootHandShake
-MultiBootHandShake: @ 800C194
- push {r4-r6,lr}
- adds r3, r0, 0
- ldrb r0, [r3, 0x18]
- cmp r0, 0xE0
- beq _0800C1B0
- cmp r0, 0xE0
- blt _0800C1C0
- cmp r0, 0xE8
- bgt _0800C1C0
- cmp r0, 0xE7
- blt _0800C1C0
- movs r4, 0x3
- ldrb r5, [r3, 0x1E]
- b _0800C220
-_0800C1B0:
- movs r1, 0
- movs r0, 0xE1
- strb r0, [r3, 0x18]
- str r1, [r3, 0x4]
- movs r0, 0x80
- lsls r0, 13
- str r0, [r3]
- b _0800C212
-_0800C1C0:
- movs r4, 0x3
- ldrb r5, [r3, 0x1E]
- movs r6, 0x1
- ldr r1, _0800C21C @ =0x04000126
-_0800C1C8:
- ldrh r0, [r1]
- adds r2, r0, 0
- adds r0, r5, 0
- asrs r0, r4
- ands r0, r6
- cmp r0, 0
- beq _0800C1DC
- ldr r0, [r3, 0x4]
- cmp r2, r0
- bne _0800C1B0
-_0800C1DC:
- subs r1, 0x2
- subs r4, 0x1
- cmp r4, 0
- bne _0800C1C8
- 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 _0800C20A
- 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]
-_0800C20A:
- ldr r0, [r3]
- lsrs r0, 5
- str r0, [r3]
-_0800C210:
- ldrh r1, [r3]
-_0800C212:
- adds r0, r3, 0
- bl MultiBootSend
- b _0800C278
- .align 2, 0
-_0800C21C: .4byte 0x04000126
-_0800C220:
- lsls r0, r4, 1
- ldr r1, _0800C268 @ =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 _0800C23C
- ldr r0, [r3, 0x4]
- cmp r2, r0
- bne _0800C26C
-_0800C23C:
- subs r4, 0x1
- cmp r4, 0
- bne _0800C220
- ldrb r0, [r3, 0x18]
- adds r0, 0x1
- strb r0, [r3, 0x18]
- lsls r0, 24
- lsrs r0, 24
- cmp r0, 0xE9
- beq _0800C276
- 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 _0800C210
- .align 2, 0
-_0800C268: .4byte 0x04000120
-_0800C26C:
- adds r0, r3, 0
- bl MultiBootInit
- movs r0, 0x71
- b _0800C278
-_0800C276:
- movs r0, 0
-_0800C278:
- pop {r4-r6}
- pop {r1}
- bx r1
- thumb_func_end MultiBootHandShake
-
- thumb_func_start MultiBootWaitCycles
-MultiBootWaitCycles: @ 800C280
- mov r2, pc
- lsrs r2, 24
- movs r1, 0xC
- cmp r2, 0x2
- beq _0800C292
- movs r1, 0xD
- cmp r2, 0x8
- beq _0800C292
- movs r1, 0x4
-_0800C292:
- subs r0, r1
- bgt _0800C292
- bx lr
- thumb_func_end MultiBootWaitCycles
-
- thumb_func_start MultiBootWaitSendDone
-MultiBootWaitSendDone: @ 800C298
- push {r4,r5,lr}
- movs r2, 0
- ldr r3, _0800C2CC @ =0x04000128
- ldrh r1, [r3]
- movs r0, 0x80
- ands r0, r1
- cmp r0, 0
- beq _0800C2BC
- ldr r5, _0800C2D0 @ =0x0000795c
- movs r4, 0x80
-_0800C2AC:
- adds r2, 0x1
- cmp r2, r5
- bgt _0800C2BC
- ldrh r1, [r3]
- adds r0, r4, 0
- ands r0, r1
- cmp r0, 0
- bne _0800C2AC
-_0800C2BC:
- movs r0, 0x96
- lsls r0, 2
- bl MultiBootWaitCycles
- pop {r4,r5}
- pop {r0}
- bx r0
- .align 2, 0
-_0800C2CC: .4byte 0x04000128
-_0800C2D0: .4byte 0x0000795c
- thumb_func_end MultiBootWaitSendDone
-
- .align 2, 0 @ Don't pad with nop.
diff --git a/include/gba/multiboot.h b/include/gba/multiboot.h
index e88b43a19..a8bc8fddf 100644
--- a/include/gba/multiboot.h
+++ b/include/gba/multiboot.h
@@ -18,9 +18,9 @@ struct MultiBootParam
u8 response_bit;
u8 client_bit;
u8 reserved1;
- u8 *boot_srcp;
- u8 *boot_endp;
- u8 *masterp;
+ const u8 *boot_srcp;
+ const u8 *boot_endp;
+ const u8 *masterp;
u8 *reserved2[MULTIBOOT_NCHILD];
u32 system_work2[4];
u8 sendflag;
diff --git a/ld_script.txt b/ld_script.txt
index 2664d8010..5ebf1515c 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -61,7 +61,7 @@ SECTIONS {
src/sprite.o(.text);
src/string_util.o(.text);
asm/link.o(.text);
- asm/multiboot.o(.text);
+ src/multiboot.o(.text);
asm/main_menu.o(.text);
asm/battle_controllers.o(.text);
asm/decompress.o(.text);
diff --git a/src/multiboot.c b/src/multiboot.c
new file mode 100644
index 000000000..b57adedd8
--- /dev/null
+++ b/src/multiboot.c
@@ -0,0 +1,420 @@
+#include "global.h"
+#include "multiboot.h"
+
+static IWRAM_DATA 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, const 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;
+ else
+ 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) && (REG_SIOCNT & SIO_START); i++);
+ MultiBootWaitCycles(600);
+}
diff --git a/sym_bss.txt b/sym_bss.txt
index 603da6ddb..2296c69cb 100644
--- a/sym_bss.txt
+++ b/sym_bss.txt
@@ -57,9 +57,7 @@ gUnknown_3000E6A: @ 3000E6A
gUnknown_3000E6B: @ 3000E6B
.space 0x1
-gUnknown_3000E6C: @ 3000E6C
- .space 0x8
-
+ .include "src/multiboot.o"
.include "src/daycare.o"
gUnknown_3000E78: @ 3000E78
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-06 08:01:31 +0000