Continue work on bg.s

This commit is contained in:
Diegoisawesome 2017-09-05 01:02:31 -05:00
parent ea33650dc1
commit afa3bf20c6
2 changed files with 33 additions and 144 deletions

View File

@ -5,59 +5,6 @@
.text
thumb_func_start IsDma3ManagerBusyWithBgCopy
@ bool8 IsDma3ManagerBusyWithBgCopy()
IsDma3ManagerBusyWithBgCopy: @ 8001AD4
push {r4-r7,lr}
movs r5, 0
movs r7, 0x1
negs r7, r7
_08001ADC:
adds r0, r5, 0
cmp r5, 0
bge _08001AE4
adds r0, 0x1F
_08001AE4:
asrs r0, 5
lsls r2, r0, 24
lsls r0, 5
subs r0, r5, r0
lsls r0, 24
lsrs r0, 24
ldr r1, =gUnknown_03000938
lsrs r2, 22
adds r4, r2, r1
movs r6, 0x1
lsls r6, r0
ldr r0, [r4]
ands r0, r6
cmp r0, 0
beq _08001B22
lsls r0, r5, 16
asrs r0, 16
bl CheckForSpaceForDma3Request
lsls r0, 24
asrs r0, 24
cmp r0, r7
bne _08001B1C
movs r0, 0x1
b _08001B2A
.pool
_08001B1C:
ldr r0, [r4]
bics r0, r6
str r0, [r4]
_08001B22:
adds r5, 0x1
cmp r5, 0x7F
ble _08001ADC
movs r0, 0
_08001B2A:
pop {r4-r7}
pop {r1}
bx r1
thumb_func_end IsDma3ManagerBusyWithBgCopy
thumb_func_start ShowBg
@ void ShowBg(u8 bg)
ShowBg: @ 8001B30

124
src/bg.c
View File

@ -58,6 +58,7 @@ extern void SetTextModeAndHideBgs();
extern bool8 IsInvalidBg(u8 bg);
extern void SetGpuReg(u8 regOffset, u16 value);
extern u16 GetGpuReg(u8 regOffset);
extern s8 CheckForSpaceForDma3Request(s16 index);
void ResetBgs(void)
{
@ -397,11 +398,11 @@ u16 LoadBgTiles(u8 bg, void *src, u16 size, u16 destOffset)
return -1;
}
gUnknown_03000938[cursor >> 5] |= (1 << (cursor & 0x1F));
gUnknown_03000938[cursor / 0x20] |= (1 << (cursor % 0x20));
if (gUnneededFireRedVariable == 1)
{
DummiedOutFireRedLeafGreenTileAllocFunc(bg, unk >> 5, size >> 5, 1);
DummiedOutFireRedLeafGreenTileAllocFunc(bg, unk / 0x20, size / 0x20, 1);
}
return cursor;
@ -418,116 +419,57 @@ u16 LoadBgTilemap(u8 bg, void *src, u16 size, u16 destOffset)
return -1;
}
gUnknown_03000938[cursor >> 5] |= (1 << (cursor & 0x1F));
gUnknown_03000938[cursor / 0x20] |= (1 << (cursor % 0x20));
return cursor;
}
#ifdef NONMATCHING
u16 Unused_LoadBgPalette(u8 bg, void *src, u16 size, u16 destOffset)
{
u16 unk_1;
s8 cursor;
int cursor2;
u32* ptr;
if (IsInvalidBgDuplicate(bg) == FALSE)
{
unk_1 = (gUnknown_030008F8[bg].unk_2 * 0x20) + (destOffset * 2);
cursor = RequestDma3Copy(src, (void*)(unk_1 + BG_PLTT), size, 0);
cursor2 = cursor;
if (cursor == -1)
{
return -1;
}
}
else
{
return -1;
}
if (cursor == -1)
{
return -1;
}
ptr = gUnknown_03000938;
if (cursor < 0)
{
cursor2 += 0x1F;
}
cursor2 >>= 5;
ptr[cursor2] |= (1 << (s8)(cursor - (cursor2 << 5)));
gUnknown_03000938[cursor / 0x20] |= (1 << (cursor % 0x20));
return (u8)cursor;
}
#else
__attribute__((naked))
u8 Unused_LoadBgPalette(u8 bg, void *src, u16 size, u16 destOffset)
bool8 IsDma3ManagerBusyWithBgCopy(void)
{
asm("push {r4-r7,lr}\n\
add r7, r1, #0\n\
lsl r0, #24\n\
lsr r4, r0, #24\n\
lsl r2, #16\n\
lsr r6, r2, #16\n\
lsl r3, #16\n\
lsr r5, r3, #16\n\
add r0, r4, #0\n\
bl IsInvalidBgDuplicate\n\
cmp r0, #0\n\
bne _08001A98\n\
ldr r1, =gUnknown_030008F8\n\
lsl r0, r4, #4\n\
add r0, r1\n\
ldrb r1, [r0, #0x1]\n\
lsl r1, #26\n\
lsr r1, #28\n\
lsl r1, #5\n\
lsl r0, r5, #1\n\
add r1, r0\n\
lsl r1, #16\n\
lsr r1, #16\n\
mov r0, #0xA0\n\
lsl r0, #19\n\
add r1, r0\n\
add r0, r7, #0\n\
add r2, r6, #0\n\
mov r3, #0\n\
bl RequestDma3Copy\n\
lsl r3, r0, #24\n\
asr r1, r3, #24\n\
mov r0, #0x1\n\
neg r0, r0\n\
cmp r1, r0\n\
bne _08001AA4\n\
_08001A98:\n\
ldr r0, =0x0000ffff\n\
b _08001AC8\n\
.pool\n\
_08001AA4:\n\
ldr r4, =gUnknown_03000938\n\
add r0, r1, #0\n\
cmp r1, #0\n\
bge _08001AAE\n\
add r0, #0x1F\n\
_08001AAE:\n\
asr r0, #5\n\
lsl r2, r0, #2\n\
add r2, r4\n\
lsl r0, #5\n\
sub r0, r1, r0\n\
lsl r0, #24\n\
asr r0, #24\n\
mov r1, #0x1\n\
lsl r1, r0\n\
ldr r0, [r2]\n\
orr r0, r1\n\
str r0, [r2]\n\
lsr r0, r3, #24\n\
_08001AC8:\n\
pop {r4-r7}\n\
pop {r1}\n\
bx r1\n\
.pool");
int i;
u8 div;
u8 mod;
for (i = 0; i < 0x80; i++)
{
div = i / 0x20;
mod = i % 0x20;
if ((gUnknown_03000938[div] & (1 << mod)) != FALSE)
{
if (CheckForSpaceForDma3Request(i) == -1)
{
return TRUE;
}
gUnknown_03000938[div] &= ~(1 << mod);
}
}
return FALSE;
}
#endif // NONMATCHING