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This commit is contained in:
YamaArashi
2016-09-02 19:51:16 -07:00
parent bc10815b94
commit 7bef2a2783
158 changed files with 65183 additions and 65183 deletions
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asm/libgcnmultiboot.s
+68 -68
View File
@@ -1,12 +1,12 @@
; This library can be used to download and execute a multi-boot image from
; a GameCube using the JOY Bus protocol over the link cable.
@ This library can be used to download and execute a multi-boot image from
@ a GameCube using the JOY Bus protocol over the link cable.
.set GCMB_STRUCT_BASE_DEST_PTR, 0x20
.set GCMB_STRUCT_CUR_DEST_PTR, 0x24
.set GCMB_STRUCT_SERIAL_INTR_HANDLER, 0x28
thumb_func_start GameCubeMultiBoot_Hash
GameCubeMultiBoot_Hash: ; 82DED70
GameCubeMultiBoot_Hash: @ 82DED70
push {r4,lr}
ldr r4, pool_HashVal
eors r3, r1
@@ -26,8 +26,8 @@ $skipEor:
thumb_func_end GameCubeMultiBoot_Hash
thumb_func_start GameCubeMultiBoot_Main
; void GameCubeMultiBoot_Main(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_Main: ; 82DED84
@ void GameCubeMultiBoot_Main(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_Main: @ 82DED84
ldr r1, [r0, GCMB_STRUCT_SERIAL_INTR_HANDLER]
cmp r1, 0
beq _082DEDAA
@@ -166,13 +166,13 @@ _082DEE76:
pool_HashVal: .4byte 0xa1c1
pool_Kawa: .ascii "Kawa" ; name of BIOS developer
pool_Kawa: .ascii "Kawa" @ name of BIOS developer
pool_NintendoLogo: .4byte RomHeaderNintendoLogo
thumb_func_start GameCubeMultiBoot_ExecuteProgram
; void GameCubeMultiBoot_ExecuteProgram(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_ExecuteProgram: ; 82DEE84
@ void GameCubeMultiBoot_ExecuteProgram(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_ExecuteProgram: @ 82DEE84
ldrb r1, [r0, 0x2]
cmp r1, 0x2
bne $unableToExecute
@@ -187,20 +187,20 @@ $unableToExecute:
thumb_func_end GameCubeMultiBoot_ExecuteProgram
thumb_func_start GameCubeMultiBoot_Init
; void GameCubeMultiBoot_Init(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_Init: ; 82DEE98
@ void GameCubeMultiBoot_Init(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_Init: @ 82DEE98
ldr r3, pool_InterruptRegs
; Save IME register.
@ Save IME register.
ldrh r2, [r3, OFFSET_REG_IME - 0x200]
; Disable interrupts.
@ Disable interrupts.
movs r1, 0
strh r1, [r3, OFFSET_REG_IME - 0x200]
; Set the handler to the "Stop" routine.
; Unless the first command that is received is a device reset command, the
; "Stop" routine will be executed and no further commands will be processed.
@ Set the handler to the "Stop" routine.
@ Unless the first command that is received is a device reset command, the
@ "Stop" routine will be executed and no further commands will be processed.
adr r3, GcMbIntrHandler_Stop
str r3, [r0, GCMB_STRUCT_SERIAL_INTR_HANDLER]
@@ -212,7 +212,7 @@ GameCubeMultiBoot_Init: ; 82DEE98
adds r3, r0, 0
adds r3, GCMB_STRUCT_BASE_DEST_PTR
; clear all but the last 3 fields of the struct
@ clear all but the last 3 fields of the struct
$clearStructLoop:
stm r0!, {r1}
cmp r0, r3
@@ -226,43 +226,43 @@ $clearStructLoop:
ldr r3, pool_SerialRegs
; Turn off JOY Bus mode.
@ Turn off JOY Bus mode.
lsls r0, r3, 10
strh r0, [r3, OFFSET_REG_RCNT - 0x120]
; Turn on JOY Bus mode.
@ Turn on JOY Bus mode.
movs r0, 0xC0
lsls r0, 8
strh r0, [r3, OFFSET_REG_RCNT - 0x120]
; Init JOY Bus registers.
@ Init JOY Bus registers.
movs r0, 0x47
strh r0, [r3, OFFSET_REG_JOYCNT - 0x120]
strh r1, [r3, OFFSET_REG_JOYSTAT - 0x120]
ldr r3, pool_InterruptRegs
; Acknowledge serial interrupt.
@ Acknowledge serial interrupt.
movs r0, INTR_FLAG_SERIAL
strh r0, [r3, OFFSET_REG_IF - 0x200]
; Enable serial interrupt.
@ Enable serial interrupt.
ldrh r1, [r3, OFFSET_REG_IE - 0x200]
orrs r1, r0
strh r1, [r3, OFFSET_REG_IE - 0x200]
; Restore IME register.
@ Restore IME register.
strh r2, [r3, OFFSET_REG_IME - 0x200]
bx lr
thumb_func_end GameCubeMultiBoot_Init
non_word_aligned_thumb_func_start GameCubeMultiBoot_HandleSerialInterrupt
; void GameCubeMultiBoot_HandleSerialInterrupt(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_HandleSerialInterrupt: ; 82DEEE2
@ void GameCubeMultiBoot_HandleSerialInterrupt(struct GameCubeMultiBoot *mb);
GameCubeMultiBoot_HandleSerialInterrupt: @ 82DEEE2
ldr r3, pool_SerialRegs
; Acknowledge reset/receive/send flags.
@ Acknowledge reset/receive/send flags.
ldrh r1, [r3, OFFSET_REG_JOYCNT - 0x120]
strh r1, [r3, OFFSET_REG_JOYCNT - 0x120]
@@ -273,16 +273,16 @@ GameCubeMultiBoot_HandleSerialInterrupt: ; 82DEEE2
cmp r2, 0
beq GameCubeMultiBoot_HandleSerialInterruptDone
lsrs r1, 1 ; was a device reset command received?
bcs GameCubeMultiBoot_BeginHandshake ; branch if so
lsrs r1, 1 @ was a device reset command received?
bcs GameCubeMultiBoot_BeginHandshake @ branch if so
mov pc, r2
.align 2, 0
; Zero the status and the interrupt handler pointer.
; Commands from the GameCube will not be processed after this is executed
; unless GameCubeMultiBoot_Init() is called again.
@ Zero the status and the interrupt handler pointer.
@ Commands from the GameCube will not be processed after this is executed
@ unless GameCubeMultiBoot_Init() is called again.
GcMbIntrHandler_Stop:
movs r2, 0
strh r2, [r3, OFFSET_REG_JOYSTAT - 0x120]
@@ -317,27 +317,27 @@ GameCubeMultiBoot_BeginHandshake:
.align 2, 0
GcMbIntrHandler_CheckGameCodeSent: ; 82DEF24
GcMbIntrHandler_CheckGameCodeSent: @ 82DEF24
lsls r1, 31
bcc GcMbIntrHandler_Stop ; stop if send failed
bmi GameCubeMultiBoot_CheckHandshakeResponse ; branch if receive is complete
bcc GcMbIntrHandler_Stop @ stop if send failed
bmi GameCubeMultiBoot_CheckHandshakeResponse @ branch if receive is complete
; If the response hasn't been fully received yet,
; check again upon the next interrupt.
@ If the response hasn't been fully received yet,
@ check again upon the next interrupt.
adr r2, GcMbIntrHandler_CheckHandshakeResponse
b GameCubeMultiBoot_SetInterruptHandler
.align 2, 0
GcMbIntrHandler_CheckHandshakeResponse: ; 82DEF30
lsrs r1, 1 ; is receive complete?
bcc GcMbIntrHandler_Stop ; stop if not
GcMbIntrHandler_CheckHandshakeResponse: @ 82DEF30
lsrs r1, 1 @ is receive complete?
bcc GcMbIntrHandler_Stop @ stop if not
GameCubeMultiBoot_CheckHandshakeResponse:
ldr r1, [r3, OFFSET_REG_JOY_RECV - 0x120]
ldr r2, pool_RubyUSAGameCode
cmp r1, r2
bne GcMbIntrHandler_Stop ; stop if the GameCube didn't reply with the same game code
bne GcMbIntrHandler_Stop @ stop if the GameCube didn't reply with the same game code
ldrb r1, [r0, 0x3]
strb r1, [r0, 0xB]
adr r2, GcMbIntrHandler_82DEF44
@@ -345,9 +345,9 @@ GameCubeMultiBoot_CheckHandshakeResponse:
.align 2, 0
GcMbIntrHandler_82DEF44: ; 82DEF44
lsrs r1, 1 ; is receive complete?
bcc GcMbIntrHandler_Stop ; branch if not
GcMbIntrHandler_82DEF44: @ 82DEF44
lsrs r1, 1 @ is receive complete?
bcc GcMbIntrHandler_Stop @ branch if not
ldr r1, [r3, OFFSET_REG_JOY_RECV - 0x120]
lsrs r2, r1, 24
cmp r2, 0xDD
@@ -383,18 +383,18 @@ _082DEF72:
.align 2, 0
GcMbIntrHandler_82DEF84: ; 82DEF84
GcMbIntrHandler_82DEF84: @ 82DEF84
lsls r1, 31
bcc GcMbIntrHandler_Stop ; stop if send failed
bmi _082DEF94 ; branch if receive is complete
bcc GcMbIntrHandler_Stop @ stop if send failed
bmi _082DEF94 @ branch if receive is complete
adr r2, GcMbIntrHandler_82DEF90
b GameCubeMultiBoot_SetInterruptHandler
.align 2, 0
GcMbIntrHandler_82DEF90: ; 82DEF90
lsrs r1, 1 ; is receive complete?
bcc GcMbIntrHandler_Stop ; branch if not
GcMbIntrHandler_82DEF90: @ 82DEF90
lsrs r1, 1 @ is receive complete?
bcc GcMbIntrHandler_Stop @ branch if not
_082DEF94:
ldr r1, [r3, OFFSET_REG_JOY_RECV - 0x120]
ldr r2, _082DF034
@@ -415,9 +415,9 @@ _082DEFA6:
.align 2, 0
GcMbIntrHandler_82DEFB4: ; 82DEFB4
lsrs r1, 1 ; is receive complete?
bcc GcMbIntrHandler_Stop ; branch if not
GcMbIntrHandler_82DEFB4: @ 82DEFB4
lsrs r1, 1 @ is receive complete?
bcc GcMbIntrHandler_Stop @ branch if not
ldr r2, [r0, GCMB_STRUCT_CUR_DEST_PTR]
movs r1, 0x4
ands r1, r2
@@ -456,18 +456,18 @@ _082DEFE2:
.align 2, 0
GcMbIntrHandler_82DEFF0: ; 82DEFF0
GcMbIntrHandler_82DEFF0: @ 82DEFF0
lsls r1, 31
bcc _082DEFE2 ; branch if send failed
bmi _082DF000 ; branch if receive is complete
bcc _082DEFE2 @ branch if send failed
bmi _082DF000 @ branch if receive is complete
adr r2, GcMbIntrHandler_82DEFFC
b GameCubeMultiBoot_SetInterruptHandler
.align 2, 0
GcMbIntrHandler_82DEFFC: ; 82DEFFC
lsrs r1, 1 ; is receive complete?
bcc _082DEFE2 ; branch if not
GcMbIntrHandler_82DEFFC: @ 82DEFFC
lsrs r1, 1 @ is receive complete?
bcc _082DEFE2 @ branch if not
_082DF000:
ldr r1, [r3, OFFSET_REG_JOY_RECV - 0x120]
@@ -480,45 +480,45 @@ _082DF000:
.align 2, 0
GcMbIntrHandler_82DF010: ; 82DF010
GcMbIntrHandler_82DF010: @ 82DF010
b GcMbIntrHandler_Stop
thumb_func_end GameCubeMultiBoot_HandleSerialInterrupt
non_word_aligned_thumb_func_start GameCubeMultiBoot_Quit
; void GameCubeMultiBoot_Quit();
GameCubeMultiBoot_Quit: ; 82DF012
@ void GameCubeMultiBoot_Quit();
GameCubeMultiBoot_Quit: @ 82DF012
ldr r3, pool_InterruptRegs
; Save IME register.
@ Save IME register.
ldrh r2, [r3, OFFSET_REG_IME - 0x200]
; Disable interrupts.
@ Disable interrupts.
movs r1, 0
strh r1, [r3, OFFSET_REG_IME - 0x200]
ldr r3, pool_SerialRegs
; Acknowledge all JOYCNT flags.
@ Acknowledge all JOYCNT flags.
movs r0, 0x7
strh r0, [r3, OFFSET_REG_JOYCNT - 0x120]
; Turn off JOY Bus mode.
@ Turn off JOY Bus mode.
lsls r0, r3, 10
strh r0, [r3, OFFSET_REG_RCNT - 0x120] ; store 0x8000
strh r0, [r3, OFFSET_REG_RCNT - 0x120] @ store 0x8000
ldr r3, pool_InterruptRegs
; Acknowledge serial interrupt.
@ Acknowledge serial interrupt.
movs r0, INTR_FLAG_SERIAL
strh r0, [r3, OFFSET_REG_IF - 0x200]
; Disable serial interrupt.
@ Disable serial interrupt.
ldrh r1, [r3, OFFSET_REG_IE - 0x200]
bics r1, r0
strh r1, [r3, OFFSET_REG_IE - 0x200]
; Restore IME register.
@ Restore IME register.
strh r2, [r3, OFFSET_REG_IME - 0x200]
bx lr