mirror of
https://github.com/pret/pmd-red.git
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172 lines
3.5 KiB
C
172 lines
3.5 KiB
C
#include "global.h"
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#include "cpu.h"
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extern u32 gUnknown_202D800;
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extern u16 gBldCnt; // used to update Blend Count Reg
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extern u16 gUnknown_203B0BE[];
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void sub_800CDA8(u32 r0)
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{
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gUnknown_202D800 = r0;
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gBldCnt = gUnknown_203B0BE[r0];
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}
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u32 sub_800CDC8(void)
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{
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return gUnknown_202D800;
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}
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void SetWindowTitle(char *title)
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{
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}
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void nullsub_23(bool8 a0)
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{
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}
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// Unused
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void nullsub_182(void)
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{
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}
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// Unused
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bool8 sub_800CDE0(void)
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{
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return TRUE;
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}
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void CpuCopy(void *dest, void *src, s32 size)
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{
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CpuCopy32(src, dest, size);
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}
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void CpuClear(void *dest, s32 size)
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{
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CpuFill32(NULL, dest, size);
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}
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void CpuFill(void *dest, void *value, s32 size)
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{
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CpuFill32(value, dest, size);
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}
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#ifdef NONMATCHING
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void VBlank_CB(void)
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{
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// TODO this is so gross.. looks like a macro or something else but I don't want to deal with this rn
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REG_DMA0CNT_H = (REG_DMA0CNT_H | DMA_ENABLE) & 0xCDFF;
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asm("mov \tr8, r8");
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asm("mov \tr8, r8");
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asm("mov \tr8, r8");
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asm("mov \tr8, r8");
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REG_DMA0CNT_H &= 0x7FFF;
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// Everything below matches
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REG_WININ = WININ_WIN0_ALL | WININ_WIN1_ALL;
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REG_WINOUT = WINOUT_WIN01_OBJ | WINOUT_WIN01_CLR | WINOUT_WIN01_BG3 | WINOUT_WIN01_BG2 | WINOUT_WIN01_BG0;
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REG_BLDCNT = gBldCnt;
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REG_BLDALPHA = gBldAlpha;
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if (gUnknown_2026E38 != 0) {
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DmaSet(0, &gUnknown_2026E3C[2], REG_ADDR_WIN0H, 0xA2600002);
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REG_WIN0H = gUnknown_2026E3C[0];
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REG_WIN1H = gUnknown_2026E3C[1];
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REG_WIN0V = DISPLAY_HEIGHT;
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REG_WIN1V = DISPLAY_HEIGHT;
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}
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else {
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REG_WIN0H = 0;
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REG_WIN1H = 0;
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REG_WIN0V = 0;
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REG_WIN1V = 0;
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}
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}
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#else
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NAKED
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void VBlank_CB(void)
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{
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asm_unified("\tpush {lr}\n"
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"\tldr r2, _0800CEC0\n"
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"\tldrh r0, [r2]\n"
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"\tmovs r3, 0x80\n"
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"\tlsls r3, 8\n"
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"\tadds r1, r3, 0\n"
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"\torrs r0, r1\n"
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"\tldr r1, _0800CEC4\n"
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"\tands r0, r1\n"
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"\tstrh r0, [r2]\n"
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"\tmov r8, r8\n"
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"\tmov r8, r8\n"
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"\tmov r8, r8\n"
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"\tmov r8, r8\n"
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"\tldr r1, _0800CEC8\n"
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"\tands r0, r1\n"
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"\tstrh r0, [r2]\n"
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"\tldr r1, _0800CECC\n"
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"\tldr r2, _0800CED0\n"
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"\tadds r0, r2, 0\n"
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"\tstrh r0, [r1]\n"
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"\tadds r1, 0x2\n"
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"\tmovs r0, 0x3D\n"
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"\tstrh r0, [r1]\n"
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"\tadds r1, 0x6\n"
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"\tldr r0, _0800CED4\n"
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"\tldrh r0, [r0]\n"
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"\tstrh r0, [r1]\n"
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"\tadds r1, 0x2\n"
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"\tldr r0, _0800CED8\n"
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"\tldrh r0, [r0]\n"
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"\tstrh r0, [r1]\n"
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"\tldr r0, _0800CEDC\n"
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"\tldrb r1, [r0]\n"
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"\tcmp r1, 0\n"
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"\tbeq _0800CEF4\n"
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"\tldr r1, _0800CEE0\n"
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"\tldr r0, _0800CEE4\n"
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"\tldr r2, [r0]\n"
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"\tadds r0, r2, 0x4\n"
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"\tstr r0, [r1]\n"
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"\tldr r3, _0800CEE8\n"
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"\tstr r3, [r1, 0x4]\n"
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"\tldr r0, _0800CEEC\n"
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"\tstr r0, [r1, 0x8]\n"
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"\tldr r0, [r1, 0x8]\n"
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"\tldrh r0, [r2]\n"
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"\tstrh r0, [r3]\n"
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"\tsubs r1, 0x6E\n"
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"\tldrh r0, [r2, 0x2]\n"
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"\tstrh r0, [r1]\n"
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"\tldr r0, _0800CEF0\n"
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"\tmovs r1, 0xA0\n"
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"\tb _0800CEFE\n"
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"\t.align 2, 0\n"
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"_0800CEC0: .4byte 0x040000ba\n"
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"_0800CEC4: .4byte 0x0000cdff\n"
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"_0800CEC8: .4byte 0x00007fff\n"
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"_0800CECC: .4byte 0x04000048\n"
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"_0800CED0: .4byte 0x00003f3f\n"
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"_0800CED4: .4byte gBldCnt\n"
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"_0800CED8: .4byte gBldAlpha\n"
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"_0800CEDC: .4byte gUnknown_2026E38\n"
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"_0800CEE0: .4byte 0x040000b0\n"
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"_0800CEE4: .4byte gUnknown_2026E3C\n"
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"_0800CEE8: .4byte 0x04000040\n"
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"_0800CEEC: .4byte 0xa2600002\n"
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"_0800CEF0: .4byte 0x04000044\n"
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"_0800CEF4:\n"
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"\tldr r0, _0800CF08\n"
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"\tstrh r1, [r0]\n"
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"\tadds r0, 0x2\n"
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"\tstrh r1, [r0]\n"
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"\tadds r0, 0x2\n"
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"_0800CEFE:\n"
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"\tstrh r1, [r0]\n"
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"\tadds r0, 0x2\n"
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"\tstrh r1, [r0]\n"
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"\tpop {r0}\n"
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"\tbx r0\n"
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"\t.align 2, 0\n"
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"_0800CF08: .4byte 0x04000040");
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}
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#endif
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