mirror of
https://github.com/Ninjdai1/pokeemerald.git
synced 2024-12-25 11:14:15 +01:00
finish decompiling dma3_manager.c except for ProcessDma3Requests (#18)
This commit is contained in:
ProjectRevoTPP
YamaArashi
parent
9a80b550f0
commit
afd45e9dd4
@ -1,555 +0,0 @@
|
||||
.include "asm/macros.inc"
|
||||
.include "constants/constants.inc"
|
||||
|
||||
.syntax unified
|
||||
|
||||
.text
|
||||
|
||||
thumb_func_start ClearDma3Requests
|
||||
@ void ClearDma3Requests()
|
||||
ClearDma3Requests: @ 8000BB8
|
||||
push {lr}
|
||||
ldr r2, =gDma3ManagerLocked
|
||||
movs r0, 0x1
|
||||
strb r0, [r2]
|
||||
ldr r1, =gDma3RequestCursor
|
||||
movs r0, 0
|
||||
strb r0, [r1]
|
||||
movs r3, 0
|
||||
ldr r0, =gDma3Requests
|
||||
movs r1, 0x7F
|
||||
_8000BCC:
|
||||
strh r3, [r0, 0x8]
|
||||
str r3, [r0]
|
||||
str r3, [r0, 0x4]
|
||||
adds r0, 0x10
|
||||
subs r1, 0x1
|
||||
cmp r1, 0
|
||||
bge _8000BCC
|
||||
movs r0, 0
|
||||
strb r0, [r2]
|
||||
pop {r0}
|
||||
bx r0
|
||||
.pool
|
||||
thumb_func_end ClearDma3Requests
|
||||
|
||||
thumb_func_start ProcessDma3Requests
|
||||
@ void ProcessDma3Requests()
|
||||
ProcessDma3Requests: @ 8000BF0
|
||||
push {r4-r7,lr}
|
||||
mov r7, r10
|
||||
mov r6, r9
|
||||
mov r5, r8
|
||||
push {r5-r7}
|
||||
sub sp, 0xC
|
||||
ldr r0, =gDma3ManagerLocked
|
||||
ldrb r0, [r0]
|
||||
cmp r0, 0
|
||||
beq _08000C06
|
||||
b _08000E46
|
||||
_08000C06:
|
||||
movs r0, 0
|
||||
str r0, [sp, 0x8]
|
||||
ldr r1, =gDma3Requests
|
||||
ldr r2, =gDma3RequestCursor
|
||||
ldrb r0, [r2]
|
||||
lsls r0, 4
|
||||
adds r0, r1
|
||||
ldrh r0, [r0, 0x8]
|
||||
mov r12, r2
|
||||
cmp r0, 0
|
||||
bne _08000C1E
|
||||
b _08000E46
|
||||
_08000C1E:
|
||||
mov r8, r1
|
||||
adds r1, 0x4
|
||||
mov r10, r1
|
||||
movs r6, 0x80
|
||||
lsls r6, 5
|
||||
ldr r7, =REG_DMA3
|
||||
movs r2, 0
|
||||
mov r9, r2
|
||||
_08000C2E:
|
||||
mov r3, r12
|
||||
ldrb r0, [r3]
|
||||
lsls r5, r0, 4
|
||||
mov r0, r8
|
||||
adds r1, r5, r0
|
||||
ldrh r0, [r1, 0x8]
|
||||
ldr r2, [sp, 0x8]
|
||||
adds r0, r2, r0
|
||||
lsls r0, 16
|
||||
lsrs r0, 16
|
||||
str r0, [sp, 0x8]
|
||||
movs r0, 0xA0
|
||||
lsls r0, 8
|
||||
ldr r3, [sp, 0x8]
|
||||
cmp r3, r0
|
||||
bls _08000C50
|
||||
b _08000E46
|
||||
_08000C50:
|
||||
ldr r0, =REG_VCOUNT
|
||||
ldrb r0, [r0]
|
||||
cmp r0, 0xE0
|
||||
bls _08000C5A
|
||||
b _08000E46
|
||||
_08000C5A:
|
||||
ldrh r0, [r1, 0xA]
|
||||
cmp r0, 0x2
|
||||
beq _08000CD0
|
||||
cmp r0, 0x2
|
||||
bgt _08000C80
|
||||
cmp r0, 0x1
|
||||
beq _08000C8C
|
||||
b _08000DF0
|
||||
.pool
|
||||
_08000C80:
|
||||
cmp r0, 0x3
|
||||
beq _08000D3C
|
||||
cmp r0, 0x4
|
||||
bne _08000C8A
|
||||
b _08000D88
|
||||
_08000C8A:
|
||||
b _08000DF0
|
||||
_08000C8C:
|
||||
ldr r3, [r1]
|
||||
mov r2, r10
|
||||
adds r0, r5, r2
|
||||
ldr r2, [r0]
|
||||
ldrh r1, [r1, 0x8]
|
||||
cmp r1, r6
|
||||
bhi _08000CA6
|
||||
str r3, [r7]
|
||||
str r2, [r7, 0x4]
|
||||
lsrs r0, r1, 2
|
||||
movs r1, 0x84
|
||||
lsls r1, 24
|
||||
b _08000DAA
|
||||
_08000CA6:
|
||||
ldr r4, =REG_DMA3
|
||||
str r3, [r4]
|
||||
str r2, [r4, 0x4]
|
||||
ldr r0, =0x84000400
|
||||
str r0, [r4, 0x8]
|
||||
ldr r0, [r4, 0x8]
|
||||
adds r3, r6
|
||||
adds r2, r6
|
||||
subs r1, r6
|
||||
cmp r1, r6
|
||||
bhi _08000CA6
|
||||
str r3, [r4]
|
||||
str r2, [r4, 0x4]
|
||||
lsrs r0, r1, 2
|
||||
movs r1, 0x84
|
||||
lsls r1, 24
|
||||
b _08000D76
|
||||
.pool
|
||||
_08000CD0:
|
||||
mov r3, r10
|
||||
adds r0, r5, r3
|
||||
ldr r4, [r0]
|
||||
ldrh r1, [r1, 0x8]
|
||||
cmp r1, r6
|
||||
bhi _08000CF4
|
||||
mov r0, r8
|
||||
adds r0, 0xC
|
||||
adds r0, r5, r0
|
||||
ldr r0, [r0]
|
||||
str r0, [sp]
|
||||
mov r5, sp
|
||||
str r5, [r7]
|
||||
str r4, [r7, 0x4]
|
||||
lsrs r0, r1, 2
|
||||
movs r1, 0x85
|
||||
lsls r1, 24
|
||||
b _08000DAA
|
||||
_08000CF4:
|
||||
mov r2, r12
|
||||
ldrb r0, [r2]
|
||||
lsls r0, 4
|
||||
mov r5, r8
|
||||
adds r5, 0xC
|
||||
adds r0, r5
|
||||
ldr r0, [r0]
|
||||
str r0, [sp]
|
||||
ldr r3, =REG_DMA3
|
||||
mov r0, sp
|
||||
str r0, [r3]
|
||||
str r4, [r3, 0x4]
|
||||
ldr r0, =0x85000400
|
||||
str r0, [r3, 0x8]
|
||||
ldr r0, [r3, 0x8]
|
||||
adds r4, r6
|
||||
subs r1, r6
|
||||
cmp r1, r6
|
||||
bhi _08000CF4
|
||||
ldrb r0, [r2]
|
||||
lsls r0, 4
|
||||
adds r0, r5
|
||||
ldr r0, [r0]
|
||||
str r0, [sp]
|
||||
mov r2, sp
|
||||
str r2, [r3]
|
||||
str r4, [r3, 0x4]
|
||||
lsrs r0, r1, 2
|
||||
movs r1, 0x85
|
||||
lsls r1, 24
|
||||
b _08000DEA
|
||||
.pool
|
||||
_08000D3C:
|
||||
ldr r3, [r1]
|
||||
mov r2, r10
|
||||
adds r0, r5, r2
|
||||
ldr r2, [r0]
|
||||
ldrh r1, [r1, 0x8]
|
||||
cmp r1, r6
|
||||
bhi _08000D56
|
||||
str r3, [r7]
|
||||
str r2, [r7, 0x4]
|
||||
lsrs r0, r1, 1
|
||||
movs r1, 0x80
|
||||
lsls r1, 24
|
||||
b _08000DAA
|
||||
_08000D56:
|
||||
ldr r4, =REG_DMA3
|
||||
str r3, [r4]
|
||||
str r2, [r4, 0x4]
|
||||
ldr r0, =0x80000800
|
||||
str r0, [r4, 0x8]
|
||||
ldr r0, [r4, 0x8]
|
||||
adds r3, r6
|
||||
adds r2, r6
|
||||
subs r1, r6
|
||||
cmp r1, r6
|
||||
bhi _08000D56
|
||||
str r3, [r4]
|
||||
str r2, [r4, 0x4]
|
||||
lsrs r0, r1, 1
|
||||
movs r1, 0x80
|
||||
lsls r1, 24
|
||||
_08000D76:
|
||||
orrs r0, r1
|
||||
str r0, [r4, 0x8]
|
||||
ldr r0, [r4, 0x8]
|
||||
b _08000DF0
|
||||
.pool
|
||||
_08000D88:
|
||||
mov r3, r10
|
||||
adds r0, r5, r3
|
||||
ldr r2, [r0]
|
||||
ldrh r4, [r1, 0x8]
|
||||
add r1, sp, 0x4
|
||||
cmp r4, r6
|
||||
bhi _08000DB2
|
||||
mov r0, r8
|
||||
adds r0, 0xC
|
||||
adds r0, r5, r0
|
||||
ldr r0, [r0]
|
||||
strh r0, [r1]
|
||||
str r1, [r7]
|
||||
str r2, [r7, 0x4]
|
||||
lsrs r0, r4, 1
|
||||
movs r1, 0x81
|
||||
lsls r1, 24
|
||||
_08000DAA:
|
||||
orrs r0, r1
|
||||
str r0, [r7, 0x8]
|
||||
ldr r0, [r7, 0x8]
|
||||
b _08000DF0
|
||||
_08000DB2:
|
||||
mov r5, r12
|
||||
ldrb r0, [r5]
|
||||
lsls r0, 4
|
||||
ldr r3, =gUnknown_0300001C
|
||||
adds r0, r3
|
||||
ldr r0, [r0]
|
||||
strh r0, [r1]
|
||||
ldr r3, =REG_DMA3
|
||||
str r1, [r3]
|
||||
str r2, [r3, 0x4]
|
||||
ldr r0, =0x81000800
|
||||
str r0, [r3, 0x8]
|
||||
ldr r0, [r3, 0x8]
|
||||
adds r2, r6
|
||||
subs r4, r6
|
||||
cmp r4, r6
|
||||
bhi _08000DB2
|
||||
ldrb r0, [r5]
|
||||
lsls r0, 4
|
||||
ldr r5, =gUnknown_0300001C
|
||||
adds r0, r5
|
||||
ldr r0, [r0]
|
||||
strh r0, [r1]
|
||||
str r1, [r3]
|
||||
str r2, [r3, 0x4]
|
||||
lsrs r0, r4, 1
|
||||
movs r1, 0x81
|
||||
lsls r1, 24
|
||||
_08000DEA:
|
||||
orrs r0, r1
|
||||
str r0, [r3, 0x8]
|
||||
ldr r0, [r3, 0x8]
|
||||
_08000DF0:
|
||||
ldr r1, =gDma3Requests
|
||||
mov r3, r12
|
||||
ldrb r0, [r3]
|
||||
lsls r0, 4
|
||||
adds r0, r1
|
||||
mov r2, r9
|
||||
str r2, [r0]
|
||||
ldrb r0, [r3]
|
||||
lsls r0, 4
|
||||
add r0, r10
|
||||
str r2, [r0]
|
||||
ldrb r0, [r3]
|
||||
lsls r0, 4
|
||||
adds r0, r1
|
||||
movs r4, 0
|
||||
strh r2, [r0, 0x8]
|
||||
ldrb r0, [r3]
|
||||
lsls r0, 4
|
||||
adds r0, r1
|
||||
mov r5, r9
|
||||
strh r5, [r0, 0xA]
|
||||
ldrb r0, [r3]
|
||||
lsls r0, 4
|
||||
adds r1, 0xC
|
||||
adds r0, r1
|
||||
mov r1, r9
|
||||
str r1, [r0]
|
||||
ldrb r0, [r3]
|
||||
adds r0, 0x1
|
||||
strb r0, [r3]
|
||||
lsls r0, 24
|
||||
cmp r0, 0
|
||||
bge _08000E34
|
||||
strb r4, [r3]
|
||||
_08000E34:
|
||||
mov r2, r12
|
||||
ldrb r0, [r2]
|
||||
lsls r0, 4
|
||||
ldr r3, =gDma3Requests
|
||||
adds r0, r3
|
||||
ldrh r0, [r0, 0x8]
|
||||
cmp r0, 0
|
||||
beq _08000E46
|
||||
b _08000C2E
|
||||
_08000E46:
|
||||
add sp, 0xC
|
||||
pop {r3-r5}
|
||||
mov r8, r3
|
||||
mov r9, r4
|
||||
mov r10, r5
|
||||
pop {r4-r7}
|
||||
pop {r0}
|
||||
bx r0
|
||||
.pool
|
||||
thumb_func_end ProcessDma3Requests
|
||||
|
||||
thumb_func_start RequestDma3Copy
|
||||
@ int RequestDma3Copy(void *src, void *dest, u16 size, u8 mode)
|
||||
RequestDma3Copy: @ 8000E68
|
||||
push {r4-r7,lr}
|
||||
mov r7, r10
|
||||
mov r6, r9
|
||||
mov r5, r8
|
||||
push {r5-r7}
|
||||
mov r12, r0
|
||||
mov r8, r1
|
||||
lsls r2, 16
|
||||
lsrs r7, r2, 16
|
||||
lsls r3, 24
|
||||
lsrs r4, r3, 24
|
||||
movs r5, 0
|
||||
ldr r1, =gDma3ManagerLocked
|
||||
movs r0, 0x1
|
||||
strb r0, [r1]
|
||||
ldr r0, =gDma3RequestCursor
|
||||
ldrb r2, [r0]
|
||||
mov r10, r1
|
||||
ldr r6, =gDma3Requests
|
||||
mov r9, r6
|
||||
lsls r0, r2, 4
|
||||
adds r1, r0, r6
|
||||
_08000E94:
|
||||
lsls r3, r2, 4
|
||||
ldrh r0, [r1, 0x8]
|
||||
cmp r0, 0
|
||||
bne _08000ED4
|
||||
mov r0, r12
|
||||
str r0, [r1]
|
||||
mov r0, r9
|
||||
adds r0, 0x4
|
||||
adds r0, r3, r0
|
||||
mov r3, r8
|
||||
str r3, [r0]
|
||||
strh r7, [r1, 0x8]
|
||||
cmp r4, 0x1
|
||||
bne _08000EC0
|
||||
strh r4, [r1, 0xA]
|
||||
b _08000EC4
|
||||
.pool
|
||||
_08000EC0:
|
||||
movs r0, 0x3
|
||||
strh r0, [r1, 0xA]
|
||||
_08000EC4:
|
||||
movs r0, 0
|
||||
ldr r1, =gDma3ManagerLocked
|
||||
strb r0, [r1]
|
||||
lsls r0, r2, 16
|
||||
asrs r0, 16
|
||||
b _08000EF0
|
||||
.pool
|
||||
_08000ED4:
|
||||
adds r1, 0x10
|
||||
adds r2, 0x1
|
||||
cmp r2, 0x7F
|
||||
ble _08000EE0
|
||||
adds r1, r6, 0
|
||||
movs r2, 0
|
||||
_08000EE0:
|
||||
adds r5, 0x1
|
||||
cmp r5, 0x7F
|
||||
ble _08000E94
|
||||
movs r0, 0
|
||||
mov r3, r10
|
||||
strb r0, [r3]
|
||||
movs r0, 0x1
|
||||
negs r0, r0
|
||||
_08000EF0:
|
||||
pop {r3-r5}
|
||||
mov r8, r3
|
||||
mov r9, r4
|
||||
mov r10, r5
|
||||
pop {r4-r7}
|
||||
pop {r1}
|
||||
bx r1
|
||||
thumb_func_end RequestDma3Copy
|
||||
|
||||
thumb_func_start RequestDma3Fill
|
||||
@ int RequestDma3Fill(s32 value, void *dest, u16 size, u8 mode)
|
||||
RequestDma3Fill: @ 8000F00
|
||||
push {r4-r7,lr}
|
||||
mov r7, r10
|
||||
mov r6, r9
|
||||
mov r5, r8
|
||||
push {r5-r7}
|
||||
mov r9, r0
|
||||
mov r8, r1
|
||||
lsls r2, 16
|
||||
lsrs r7, r2, 16
|
||||
lsls r3, 24
|
||||
lsrs r5, r3, 24
|
||||
movs r6, 0
|
||||
ldr r0, =gDma3RequestCursor
|
||||
ldrb r2, [r0]
|
||||
ldr r1, =gDma3ManagerLocked
|
||||
movs r0, 0x1
|
||||
strb r0, [r1]
|
||||
mov r10, r1
|
||||
ldr r0, =gDma3Requests
|
||||
mov r12, r0
|
||||
mov r4, r12
|
||||
lsls r0, r2, 4
|
||||
adds r0, 0x8
|
||||
adds r1, r0, r4
|
||||
_8000F30:
|
||||
lsls r3, r2, 4
|
||||
ldrh r0, [r1]
|
||||
cmp r0, 0
|
||||
bne _08000F78
|
||||
adds r0, r4, 0x4
|
||||
adds r0, r3, r0
|
||||
mov r6, r8
|
||||
str r6, [r0]
|
||||
strh r7, [r1]
|
||||
strh r5, [r1, 0x2]
|
||||
adds r0, r4, 0
|
||||
adds r0, 0xC
|
||||
adds r0, r3, r0
|
||||
mov r3, r9
|
||||
str r3, [r0]
|
||||
cmp r5, 0x1
|
||||
bne _08000F64
|
||||
movs r0, 0x2
|
||||
b _08000F66
|
||||
.pool
|
||||
_08000F64:
|
||||
movs r0, 0x4
|
||||
_08000F66:
|
||||
strh r0, [r1, 0x2]
|
||||
movs r0, 0
|
||||
ldr r6, =gDma3ManagerLocked
|
||||
strb r0, [r6]
|
||||
lsls r0, r2, 16
|
||||
asrs r0, 16
|
||||
b _08000F96
|
||||
.pool
|
||||
_08000F78:
|
||||
adds r1, 0x10
|
||||
adds r2, 0x1
|
||||
cmp r2, 0x7F
|
||||
ble _08000F86
|
||||
mov r1, r12
|
||||
adds r1, 0x8
|
||||
movs r2, 0
|
||||
_08000F86:
|
||||
adds r6, 0x1
|
||||
cmp r6, 0x7F
|
||||
ble _8000F30
|
||||
movs r0, 0
|
||||
mov r1, r10
|
||||
strb r0, [r1]
|
||||
movs r0, 0x1
|
||||
negs r0, r0
|
||||
_08000F96:
|
||||
pop {r3-r5}
|
||||
mov r8, r3
|
||||
mov r9, r4
|
||||
mov r10, r5
|
||||
pop {r4-r7}
|
||||
pop {r1}
|
||||
bx r1
|
||||
thumb_func_end RequestDma3Fill
|
||||
|
||||
thumb_func_start CheckForSpaceForDma3Request
|
||||
@ int CheckForSpaceForDma3Request(s16 index)
|
||||
CheckForSpaceForDma3Request: @ 8000FA4
|
||||
push {lr}
|
||||
movs r2, 0
|
||||
lsls r0, 16
|
||||
asrs r1, r0, 16
|
||||
movs r3, 0x1
|
||||
negs r3, r3
|
||||
cmp r1, r3
|
||||
bne _08000FCC
|
||||
ldr r1, =gDma3Requests
|
||||
_08000FB6:
|
||||
ldrh r0, [r1, 0x8]
|
||||
cmp r0, 0
|
||||
bne _08000FD8
|
||||
adds r1, 0x10
|
||||
adds r2, 0x1
|
||||
cmp r2, 0x7F
|
||||
ble _08000FB6
|
||||
_08000FC4:
|
||||
movs r0, 0
|
||||
b _08000FDC
|
||||
.pool
|
||||
_08000FCC:
|
||||
ldr r0, =gDma3Requests
|
||||
lsls r1, 4
|
||||
adds r1, r0
|
||||
ldrh r0, [r1, 0x8]
|
||||
cmp r0, 0
|
||||
beq _08000FC4
|
||||
_08000FD8:
|
||||
movs r0, 0x1
|
||||
negs r0, r0
|
||||
_08000FDC:
|
||||
pop {r1}
|
||||
bx r1
|
||||
.pool
|
||||
thumb_func_end CheckForSpaceForDma3Request
|
||||
|
||||
.align 2, 0 @ Don't pad with nop.
|
||||
@ -43,7 +43,7 @@ SECTIONS {
|
||||
asm/crt0.o(.text);
|
||||
src/main.o(.text);
|
||||
src/malloc.o(.text);
|
||||
asm/dma3_manager.o(.text);
|
||||
src/dma3_manager.o(.text);
|
||||
src/gpu_regs.o(.text);
|
||||
asm/bg.o(.text);
|
||||
asm/blit.o(.text);
|
||||
|
||||
528
src/dma3_manager.c
Normal file
528
src/dma3_manager.c
Normal file
@ -0,0 +1,528 @@
|
||||
#include "global.h"
|
||||
|
||||
extern u8 gDma3ManagerLocked;
|
||||
extern u8 gDma3RequestCursor;
|
||||
|
||||
// size is 0x10
|
||||
struct DmaRequestsStruct
|
||||
{
|
||||
/* 0x00 */ u8 *src;
|
||||
/* 0x04 */ u8 *dest;
|
||||
/* 0x08 */ u16 size;
|
||||
/* 0x0A */ u16 mode;
|
||||
/* 0x0C */ u32 value;
|
||||
};
|
||||
|
||||
extern struct DmaRequestsStruct gDma3Requests[128];
|
||||
|
||||
void ClearDma3Requests(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
gDma3ManagerLocked = TRUE;
|
||||
gDma3RequestCursor = FALSE;
|
||||
|
||||
for(i = 0; i < (u8)ARRAY_COUNT(gDma3Requests); i++)
|
||||
{
|
||||
gDma3Requests[i].size = 0;
|
||||
gDma3Requests[i].src = 0;
|
||||
gDma3Requests[i].dest = 0;
|
||||
}
|
||||
|
||||
gDma3ManagerLocked = FALSE;
|
||||
}
|
||||
|
||||
#ifdef NONMATCHING
|
||||
void ProcessDma3Requests(void)
|
||||
{
|
||||
// NOTE: the fillerA member of the DMA struct is actually u32 value;
|
||||
// NOTE: gUnknown_0300001C is just a pointer inside the gDma3Requests structure, not a true symbol; feel free to remove
|
||||
u16 total_size;
|
||||
|
||||
if (gDma3ManagerLocked)
|
||||
return;
|
||||
|
||||
total_size = 0;
|
||||
|
||||
// as long as there are DMA requests to process (unless size or vblank is an issue), do not exit
|
||||
while (gDma3Requests[gDma3RequestCursor].size)
|
||||
{
|
||||
total_size += gDma3Requests[gDma3RequestCursor].size;
|
||||
|
||||
if (total_size > 0xA000)
|
||||
return; // don't do too much at once
|
||||
|
||||
if (REG_VCOUNT > 224)
|
||||
return;// we're about to leave vblank, stop
|
||||
|
||||
switch (gDma3Requests[gDma3RequestCursor].mode)
|
||||
{
|
||||
case 1: // regular 32-bit copy
|
||||
// _08000C8C
|
||||
if(gDma3Requests[gDma3RequestCursor].size <= 0x1000)
|
||||
{
|
||||
DmaCopy32(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
|
||||
break;
|
||||
}
|
||||
while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
|
||||
{
|
||||
DmaCopy32(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
|
||||
gDma3Requests[gDma3RequestCursor].src += 0x1000;
|
||||
gDma3Requests[gDma3RequestCursor].dest += 0x1000;
|
||||
gDma3Requests[gDma3RequestCursor].size -= 0x1000;
|
||||
}
|
||||
DmaCopy32(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
|
||||
break;
|
||||
case 2: // repeat a single 32-bit value across RAM
|
||||
// _08000CD0
|
||||
while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
|
||||
{
|
||||
DmaFill32(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
|
||||
gDma3Requests[gDma3RequestCursor].dest += 0x1000;
|
||||
gDma3Requests[gDma3RequestCursor].size -= 0x1000;
|
||||
}
|
||||
DmaFill32(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
|
||||
break;
|
||||
case 3: // regular 16-bit copy
|
||||
// _08000D3C
|
||||
while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
|
||||
{
|
||||
DmaCopy16(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
|
||||
gDma3Requests[gDma3RequestCursor].src += 0x1000;
|
||||
gDma3Requests[gDma3RequestCursor].dest += 0x1000;
|
||||
gDma3Requests[gDma3RequestCursor].size -= 0x1000;
|
||||
}
|
||||
DmaCopy16(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
|
||||
break;
|
||||
case 4: // repeat a single 16-bit value across RAM
|
||||
// _08000D88
|
||||
while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
|
||||
{
|
||||
DmaFill16(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
|
||||
gDma3Requests[gDma3RequestCursor].dest += 0x1000;
|
||||
gDma3Requests[gDma3RequestCursor].size -= 0x1000;
|
||||
}
|
||||
DmaFill16(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
|
||||
break;
|
||||
}
|
||||
gDma3Requests[gDma3RequestCursor].src = 0;
|
||||
gDma3Requests[gDma3RequestCursor].dest = 0;
|
||||
gDma3Requests[gDma3RequestCursor].size = 0;
|
||||
gDma3Requests[gDma3RequestCursor].mode = 0;
|
||||
gDma3Requests[gDma3RequestCursor].value = 0;
|
||||
gDma3RequestCursor++;
|
||||
|
||||
if (gDma3RequestCursor >= 128) // loop back to the first DMA request
|
||||
gDma3RequestCursor = 0;
|
||||
}
|
||||
}
|
||||
#else
|
||||
__attribute__((naked))
|
||||
void ProcessDma3Requests(void)
|
||||
{
|
||||
asm(".syntax unified\n\
|
||||
push {r4-r7,lr}\n\
|
||||
mov r7, r10\n\
|
||||
mov r6, r9\n\
|
||||
mov r5, r8\n\
|
||||
push {r5-r7}\n\
|
||||
sub sp, 0xC\n\
|
||||
ldr r0, =gDma3ManagerLocked\n\
|
||||
ldrb r0, [r0]\n\
|
||||
cmp r0, 0\n\
|
||||
beq _08000C06\n\
|
||||
b _08000E46\n\
|
||||
_08000C06:\n\
|
||||
movs r0, 0\n\
|
||||
str r0, [sp, 0x8]\n\
|
||||
ldr r1, =gDma3Requests\n\
|
||||
ldr r2, =gDma3RequestCursor\n\
|
||||
ldrb r0, [r2]\n\
|
||||
lsls r0, 4\n\
|
||||
adds r0, r1\n\
|
||||
ldrh r0, [r0, 0x8]\n\
|
||||
mov r12, r2\n\
|
||||
cmp r0, 0\n\
|
||||
bne _08000C1E\n\
|
||||
b _08000E46\n\
|
||||
_08000C1E:\n\
|
||||
mov r8, r1\n\
|
||||
adds r1, 0x4\n\
|
||||
mov r10, r1\n\
|
||||
movs r6, 0x80\n\
|
||||
lsls r6, 5\n\
|
||||
ldr r7, =0x040000D4 @REG_DMA3\n\
|
||||
movs r2, 0\n\
|
||||
mov r9, r2\n\
|
||||
_08000C2E:\n\
|
||||
mov r3, r12 @ gDma3RequestCursor\n\
|
||||
ldrb r0, [r3]\n\
|
||||
lsls r5, r0, 4\n\
|
||||
mov r0, r8 @ gDma3Requests\n\
|
||||
adds r1, r5, r0 @ gDma3Requests[gDma3RequestCursor]\n\
|
||||
ldrh r0, [r1, 0x8] @ gDma3Requests[gDma3RequestCursor].size\n\
|
||||
ldr r2, [sp, 0x8]\n\
|
||||
adds r0, r2, r0\n\
|
||||
lsls r0, 16\n\
|
||||
lsrs r0, 16\n\
|
||||
str r0, [sp, 0x8]\n\
|
||||
movs r0, 0xA0\n\
|
||||
lsls r0, 8\n\
|
||||
ldr r3, [sp, 0x8]\n\
|
||||
cmp r3, r0\n\
|
||||
bls _08000C50\n\
|
||||
b _08000E46\n\
|
||||
_08000C50:\n\
|
||||
ldr r0, =0x04000006 @REG_VCOUNT\n\
|
||||
ldrb r0, [r0]\n\
|
||||
cmp r0, 0xE0\n\
|
||||
bls _08000C5A\n\
|
||||
b _08000E46\n\
|
||||
_08000C5A:\n\
|
||||
ldrh r0, [r1, 0xA]\n\
|
||||
cmp r0, 0x2\n\
|
||||
beq _08000CD0\n\
|
||||
cmp r0, 0x2\n\
|
||||
bgt _08000C80\n\
|
||||
cmp r0, 0x1\n\
|
||||
beq _08000C8C\n\
|
||||
b _08000DF0\n\
|
||||
.pool\n\
|
||||
_08000C80:\n\
|
||||
cmp r0, 0x3\n\
|
||||
beq _08000D3C\n\
|
||||
cmp r0, 0x4\n\
|
||||
bne _08000C8A\n\
|
||||
b _08000D88\n\
|
||||
_08000C8A:\n\
|
||||
b _08000DF0\n\
|
||||
_08000C8C:\n\
|
||||
ldr r3, [r1]\n\
|
||||
mov r2, r10\n\
|
||||
adds r0, r5, r2\n\
|
||||
ldr r2, [r0]\n\
|
||||
ldrh r1, [r1, 0x8]\n\
|
||||
cmp r1, r6\n\
|
||||
bhi _08000CA6\n\
|
||||
str r3, [r7]\n\
|
||||
str r2, [r7, 0x4]\n\
|
||||
lsrs r0, r1, 2\n\
|
||||
movs r1, 0x84\n\
|
||||
lsls r1, 24\n\
|
||||
b _08000DAA\n\
|
||||
_08000CA6:\n\
|
||||
ldr r4, =0x040000D4 @REG_DMA3\n\
|
||||
str r3, [r4]\n\
|
||||
str r2, [r4, 0x4]\n\
|
||||
ldr r0, =0x84000400\n\
|
||||
str r0, [r4, 0x8]\n\
|
||||
ldr r0, [r4, 0x8]\n\
|
||||
adds r3, r6\n\
|
||||
adds r2, r6\n\
|
||||
subs r1, r6\n\
|
||||
cmp r1, r6\n\
|
||||
bhi _08000CA6\n\
|
||||
str r3, [r4]\n\
|
||||
str r2, [r4, 0x4]\n\
|
||||
lsrs r0, r1, 2\n\
|
||||
movs r1, 0x84\n\
|
||||
lsls r1, 24\n\
|
||||
b _08000D76\n\
|
||||
.pool\n\
|
||||
_08000CD0:\n\
|
||||
mov r3, r10\n\
|
||||
adds r0, r5, r3\n\
|
||||
ldr r4, [r0]\n\
|
||||
ldrh r1, [r1, 0x8]\n\
|
||||
cmp r1, r6\n\
|
||||
bhi _08000CF4\n\
|
||||
mov r0, r8\n\
|
||||
adds r0, 0xC\n\
|
||||
adds r0, r5, r0\n\
|
||||
ldr r0, [r0]\n\
|
||||
str r0, [sp]\n\
|
||||
mov r5, sp\n\
|
||||
str r5, [r7]\n\
|
||||
str r4, [r7, 0x4]\n\
|
||||
lsrs r0, r1, 2\n\
|
||||
movs r1, 0x85\n\
|
||||
lsls r1, 24\n\
|
||||
b _08000DAA\n\
|
||||
_08000CF4:\n\
|
||||
mov r2, r12\n\
|
||||
ldrb r0, [r2]\n\
|
||||
lsls r0, 4\n\
|
||||
mov r5, r8\n\
|
||||
adds r5, 0xC\n\
|
||||
adds r0, r5\n\
|
||||
ldr r0, [r0]\n\
|
||||
str r0, [sp]\n\
|
||||
ldr r3, =0x040000D4 @REG_DMA3\n\
|
||||
mov r0, sp\n\
|
||||
str r0, [r3]\n\
|
||||
str r4, [r3, 0x4]\n\
|
||||
ldr r0, =0x85000400\n\
|
||||
str r0, [r3, 0x8]\n\
|
||||
ldr r0, [r3, 0x8]\n\
|
||||
adds r4, r6\n\
|
||||
subs r1, r6\n\
|
||||
cmp r1, r6\n\
|
||||
bhi _08000CF4\n\
|
||||
ldrb r0, [r2]\n\
|
||||
lsls r0, 4\n\
|
||||
adds r0, r5\n\
|
||||
ldr r0, [r0]\n\
|
||||
str r0, [sp]\n\
|
||||
mov r2, sp\n\
|
||||
str r2, [r3]\n\
|
||||
str r4, [r3, 0x4]\n\
|
||||
lsrs r0, r1, 2\n\
|
||||
movs r1, 0x85\n\
|
||||
lsls r1, 24\n\
|
||||
b _08000DEA\n\
|
||||
.pool\n\
|
||||
_08000D3C:\n\
|
||||
ldr r3, [r1]\n\
|
||||
mov r2, r10\n\
|
||||
adds r0, r5, r2\n\
|
||||
ldr r2, [r0]\n\
|
||||
ldrh r1, [r1, 0x8]\n\
|
||||
cmp r1, r6\n\
|
||||
bhi _08000D56\n\
|
||||
str r3, [r7]\n\
|
||||
str r2, [r7, 0x4]\n\
|
||||
lsrs r0, r1, 1\n\
|
||||
movs r1, 0x80\n\
|
||||
lsls r1, 24\n\
|
||||
b _08000DAA\n\
|
||||
_08000D56:\n\
|
||||
ldr r4, =0x040000D4 @REG_DMA3\n\
|
||||
str r3, [r4]\n\
|
||||
str r2, [r4, 0x4]\n\
|
||||
ldr r0, =0x80000800\n\
|
||||
str r0, [r4, 0x8]\n\
|
||||
ldr r0, [r4, 0x8]\n\
|
||||
adds r3, r6\n\
|
||||
adds r2, r6\n\
|
||||
subs r1, r6\n\
|
||||
cmp r1, r6\n\
|
||||
bhi _08000D56\n\
|
||||
str r3, [r4]\n\
|
||||
str r2, [r4, 0x4]\n\
|
||||
lsrs r0, r1, 1\n\
|
||||
movs r1, 0x80\n\
|
||||
lsls r1, 24\n\
|
||||
_08000D76:\n\
|
||||
orrs r0, r1\n\
|
||||
str r0, [r4, 0x8]\n\
|
||||
ldr r0, [r4, 0x8]\n\
|
||||
b _08000DF0\n\
|
||||
.pool\n\
|
||||
_08000D88:\n\
|
||||
mov r3, r10\n\
|
||||
adds r0, r5, r3\n\
|
||||
ldr r2, [r0]\n\
|
||||
ldrh r4, [r1, 0x8]\n\
|
||||
add r1, sp, 0x4\n\
|
||||
cmp r4, r6\n\
|
||||
bhi _08000DB2\n\
|
||||
mov r0, r8\n\
|
||||
adds r0, 0xC\n\
|
||||
adds r0, r5, r0\n\
|
||||
ldr r0, [r0]\n\
|
||||
strh r0, [r1]\n\
|
||||
str r1, [r7]\n\
|
||||
str r2, [r7, 0x4]\n\
|
||||
lsrs r0, r4, 1\n\
|
||||
movs r1, 0x81\n\
|
||||
lsls r1, 24\n\
|
||||
_08000DAA:\n\
|
||||
orrs r0, r1\n\
|
||||
str r0, [r7, 0x8]\n\
|
||||
ldr r0, [r7, 0x8]\n\
|
||||
b _08000DF0\n\
|
||||
_08000DB2:\n\
|
||||
mov r5, r12\n\
|
||||
ldrb r0, [r5]\n\
|
||||
lsls r0, 4\n\
|
||||
ldr r3, =gUnknown_0300001C\n\
|
||||
adds r0, r3\n\
|
||||
ldr r0, [r0]\n\
|
||||
strh r0, [r1]\n\
|
||||
ldr r3, =0x040000D4 @REG_DMA3\n\
|
||||
str r1, [r3]\n\
|
||||
str r2, [r3, 0x4]\n\
|
||||
ldr r0, =0x81000800\n\
|
||||
str r0, [r3, 0x8]\n\
|
||||
ldr r0, [r3, 0x8]\n\
|
||||
adds r2, r6\n\
|
||||
subs r4, r6\n\
|
||||
cmp r4, r6\n\
|
||||
bhi _08000DB2\n\
|
||||
ldrb r0, [r5]\n\
|
||||
lsls r0, 4\n\
|
||||
ldr r5, =gUnknown_0300001C\n\
|
||||
adds r0, r5\n\
|
||||
ldr r0, [r0]\n\
|
||||
strh r0, [r1]\n\
|
||||
str r1, [r3]\n\
|
||||
str r2, [r3, 0x4]\n\
|
||||
lsrs r0, r4, 1\n\
|
||||
movs r1, 0x81\n\
|
||||
lsls r1, 24\n\
|
||||
_08000DEA:\n\
|
||||
orrs r0, r1\n\
|
||||
str r0, [r3, 0x8]\n\
|
||||
ldr r0, [r3, 0x8]\n\
|
||||
_08000DF0:\n\
|
||||
ldr r1, =gDma3Requests\n\
|
||||
mov r3, r12\n\
|
||||
ldrb r0, [r3]\n\
|
||||
lsls r0, 4\n\
|
||||
adds r0, r1\n\
|
||||
mov r2, r9\n\
|
||||
str r2, [r0]\n\
|
||||
ldrb r0, [r3]\n\
|
||||
lsls r0, 4\n\
|
||||
add r0, r10\n\
|
||||
str r2, [r0]\n\
|
||||
ldrb r0, [r3]\n\
|
||||
lsls r0, 4\n\
|
||||
adds r0, r1\n\
|
||||
movs r4, 0\n\
|
||||
strh r2, [r0, 0x8]\n\
|
||||
ldrb r0, [r3]\n\
|
||||
lsls r0, 4\n\
|
||||
adds r0, r1\n\
|
||||
mov r5, r9\n\
|
||||
strh r5, [r0, 0xA]\n\
|
||||
ldrb r0, [r3]\n\
|
||||
lsls r0, 4\n\
|
||||
adds r1, 0xC\n\
|
||||
adds r0, r1\n\
|
||||
mov r1, r9\n\
|
||||
str r1, [r0]\n\
|
||||
ldrb r0, [r3]\n\
|
||||
adds r0, 0x1\n\
|
||||
strb r0, [r3]\n\
|
||||
lsls r0, 24\n\
|
||||
cmp r0, 0\n\
|
||||
bge _08000E34\n\
|
||||
strb r4, [r3]\n\
|
||||
_08000E34:\n\
|
||||
mov r2, r12\n\
|
||||
ldrb r0, [r2]\n\
|
||||
lsls r0, 4\n\
|
||||
ldr r3, =gDma3Requests\n\
|
||||
adds r0, r3\n\
|
||||
ldrh r0, [r0, 0x8]\n\
|
||||
cmp r0, 0\n\
|
||||
beq _08000E46\n\
|
||||
b _08000C2E\n\
|
||||
_08000E46:\n\
|
||||
add sp, 0xC\n\
|
||||
pop {r3-r5}\n\
|
||||
mov r8, r3\n\
|
||||
mov r9, r4\n\
|
||||
mov r10, r5\n\
|
||||
pop {r4-r7}\n\
|
||||
pop {r0}\n\
|
||||
bx r0\n\
|
||||
.pool\n\
|
||||
.syntax divided");
|
||||
}
|
||||
#endif
|
||||
|
||||
int RequestDma3Copy(void *src, void *dest, u16 size, u8 mode)
|
||||
{
|
||||
int cursor;
|
||||
int var = 0;
|
||||
|
||||
gDma3ManagerLocked = 1;
|
||||
|
||||
cursor = gDma3RequestCursor;
|
||||
while(1)
|
||||
{
|
||||
if(!gDma3Requests[cursor].size) // an empty copy was found and the current cursor will be returned.
|
||||
{
|
||||
gDma3Requests[cursor].src = src;
|
||||
gDma3Requests[cursor].dest = dest;
|
||||
gDma3Requests[cursor].size = size;
|
||||
|
||||
if(mode == 1)
|
||||
gDma3Requests[cursor].mode = mode;
|
||||
else
|
||||
gDma3Requests[cursor].mode = 3;
|
||||
|
||||
gDma3ManagerLocked = FALSE;
|
||||
return (s16)cursor;
|
||||
}
|
||||
if(++cursor >= 0x80) // loop back to start.
|
||||
{
|
||||
cursor = 0;
|
||||
}
|
||||
if(++var >= 0x80) // max checks were made. all resulted in failure.
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
gDma3ManagerLocked = FALSE;
|
||||
return -1;
|
||||
}
|
||||
|
||||
int RequestDma3Fill(s32 value, void *dest, u16 size, u8 mode)
|
||||
{
|
||||
int cursor;
|
||||
int var = 0;
|
||||
|
||||
cursor = gDma3RequestCursor;
|
||||
gDma3ManagerLocked = 1;
|
||||
|
||||
while(1)
|
||||
{
|
||||
if(!gDma3Requests[cursor].size)
|
||||
{
|
||||
gDma3Requests[cursor].dest = dest;
|
||||
gDma3Requests[cursor].size = size;
|
||||
gDma3Requests[cursor].mode = mode;
|
||||
gDma3Requests[cursor].value = value;
|
||||
|
||||
if(mode == 1)
|
||||
gDma3Requests[cursor].mode = 2;
|
||||
else
|
||||
gDma3Requests[cursor].mode = 4;
|
||||
|
||||
gDma3ManagerLocked = FALSE;
|
||||
return (s16)cursor;
|
||||
}
|
||||
if(++cursor >= 0x80) // loop back to start.
|
||||
{
|
||||
cursor = 0;
|
||||
}
|
||||
if(++var >= 0x80) // max checks were made. all resulted in failure.
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
gDma3ManagerLocked = FALSE;
|
||||
return -1;
|
||||
}
|
||||
|
||||
int CheckForSpaceForDma3Request(s16 index)
|
||||
{
|
||||
int current = 0;
|
||||
|
||||
if (index == -1)
|
||||
{
|
||||
for (; current < 0x80; current ++)
|
||||
if (gDma3Requests[current].size)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (gDma3Requests[index].size)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user