diff options
Diffstat (limited to 'asm/bg_palette_buffer.s')
| -rw-r--r-- | asm/bg_palette_buffer.s | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/asm/bg_palette_buffer.s b/asm/bg_palette_buffer.s new file mode 100644 index 0000000..9b42ee5 --- /dev/null +++ b/asm/bg_palette_buffer.s @@ -0,0 +1,263 @@ + .include "constants/gba_constants.inc" + .include "asm/macros.inc" + + .syntax unified + + .text + + thumb_func_start InitBGPaletteBuffer +InitBGPaletteBuffer: + push {lr} + movs r2, 0 + ldr r1, _0800465C + movs r0, 0x80 + lsls r0, 2 +_0800463E: + strh r2, [r1] + adds r1, 0x2 + subs r0, 0x1 + cmp r0, 0 + bne _0800463E + ldr r1, _08004660 + movs r2, 0x1 + adds r0, r1, 0 + adds r0, 0x1F +_08004650: + strb r2, [r0] + subs r0, 0x1 + cmp r0, r1 + bge _08004650 + pop {r0} + bx r0 + .align 2, 0 +_0800465C: .4byte gUnknown_20251F0 +_08004660: .4byte gUnknown_20251D0 + thumb_func_end InitBGPaletteBuffer + + thumb_func_start SetBGPaletteBufferColorRGB +SetBGPaletteBufferColorRGB: + push {r4-r7,lr} + adds r4, r0, 0 + adds r5, r1, 0 + cmp r2, 0 + bge _08004670 + movs r2, 0 +_08004670: + cmp r2, 0x1F + ble _08004676 + movs r2, 0x1F +_08004676: + ldr r1, _080046CC + adds r0, r4, 0 + cmp r4, 0 + bge _08004680 + adds r0, 0xF +_08004680: + asrs r0, 4 + adds r0, r1 + movs r1, 0x1 + strb r1, [r0] + cmp r3, 0 + bne _080046D4 + ldr r0, _080046D0 + lsls r1, r4, 1 + adds r6, r1, r0 + ldrb r0, [r5, 0x2] + muls r0, r2 + cmp r0, 0 + bge _0800469C + adds r0, 0xFF +_0800469C: + asrs r0, 8 + movs r3, 0x1F + ands r0, r3 + lsls r4, r0, 10 + ldrb r0, [r5, 0x1] + muls r0, r2 + cmp r0, 0 + bge _080046AE + adds r0, 0xFF +_080046AE: + asrs r0, 8 + ands r0, r3 + lsls r1, r0, 5 + orrs r1, r4 + ldrb r0, [r5] + muls r0, r2 + cmp r0, 0 + bge _080046C0 + adds r0, 0xFF +_080046C0: + asrs r0, 8 + ands r0, r3 + orrs r1, r0 + strh r1, [r6] + b _08004722 + .align 2, 0 +_080046CC: .4byte gUnknown_20251D0 +_080046D0: .4byte gUnknown_20251F0 +_080046D4: + ldr r1, _08004728 + lsls r0, r4, 1 + adds r7, r0, r1 + ldrb r0, [r5, 0x2] + lsls r0, 2 + adds r0, r3 + ldrb r0, [r0, 0x2] + muls r0, r2 + cmp r0, 0 + bge _080046EA + adds r0, 0xFF +_080046EA: + asrs r0, 8 + movs r4, 0x1F + ands r0, r4 + lsls r6, r0, 10 + ldrb r0, [r5, 0x1] + lsls r0, 2 + adds r0, r3 + ldrb r0, [r0, 0x1] + muls r0, r2 + cmp r0, 0 + bge _08004702 + adds r0, 0xFF +_08004702: + asrs r0, 8 + ands r0, r4 + lsls r1, r0, 5 + orrs r1, r6 + ldrb r0, [r5] + lsls r0, 2 + adds r0, r3 + ldrb r0, [r0] + muls r0, r2 + cmp r0, 0 + bge _0800471A + adds r0, 0xFF +_0800471A: + asrs r0, 8 + ands r0, r4 + orrs r1, r0 + strh r1, [r7] +_08004722: + pop {r4-r7} + pop {r0} + bx r0 + .align 2, 0 +_08004728: .4byte gUnknown_20251F0 + thumb_func_end SetBGPaletteBufferColorRGB + + thumb_func_start SetBGPaletteBufferColorArray +SetBGPaletteBufferColorArray: + push {lr} + adds r2, r0, 0 + adds r3, r1, 0 + ldr r1, _08004764 + cmp r2, 0 + bge _0800473A + adds r0, 0xF +_0800473A: + asrs r0, 4 + adds r0, r1 + movs r1, 0x1 + strb r1, [r0] + ldr r0, _08004768 + lsls r2, 1 + adds r2, r0 + ldrb r1, [r3, 0x2] + lsrs r1, 3 + lsls r1, 10 + ldrb r0, [r3, 0x1] + lsrs r0, 3 + lsls r0, 5 + orrs r1, r0 + ldrb r0, [r3] + lsrs r0, 3 + orrs r0, r1 + strh r0, [r2] + pop {r0} + bx r0 + .align 2, 0 +_08004764: .4byte gUnknown_20251D0 +_08004768: .4byte gUnknown_20251F0 + thumb_func_end SetBGPaletteBufferColorArray + + thumb_func_start SetBGPaletteBufferColor +SetBGPaletteBufferColor: + push {lr} + adds r2, r0, 0 + adds r3, r1, 0 + ldr r1, _08004790 + cmp r2, 0 + bge _0800477A + adds r0, 0xF +_0800477A: + asrs r0, 4 + adds r0, r1 + movs r1, 0x1 + strb r1, [r0] + ldr r1, _08004794 + lsls r0, r2, 1 + adds r0, r1 + ldrh r1, [r3] + strh r1, [r0] + pop {r0} + bx r0 + .align 2, 0 +_08004790: .4byte gUnknown_20251D0 +_08004794: .4byte gUnknown_20251F0 + thumb_func_end SetBGPaletteBufferColor + + thumb_func_start nullsub_4 +nullsub_4: + bx lr + thumb_func_end nullsub_4 + + thumb_func_start nullsub_5 +nullsub_5: + bx lr + thumb_func_end nullsub_5 + + thumb_func_start nullsub_143 +nullsub_143: + bx lr + thumb_func_end nullsub_143 + + thumb_func_start TransferBGPaletteBuffer +TransferBGPaletteBuffer: + push {r4-r6,lr} + movs r6, 0 + movs r4, 0 + movs r5, 0xA0 + lsls r5, 19 +_080047AE: + ldr r0, _080047DC + adds r1, r6, r0 + ldrb r0, [r1] + cmp r0, 0 + beq _080047CA + movs r0, 0 + strb r0, [r1] + lsls r1, r4, 1 + ldr r0, _080047E0 + adds r1, r0 + adds r0, r5, 0 + movs r2, 0x20 + bl CpuCopy +_080047CA: + adds r6, 0x1 + adds r5, 0x20 + adds r4, 0x10 + ldr r0, _080047E4 + cmp r4, r0 + ble _080047AE + pop {r4-r6} + pop {r0} + bx r0 + .align 2, 0 +_080047DC: .4byte gUnknown_20251D0 +_080047E0: .4byte gUnknown_20251F0 +_080047E4: .4byte 0x000001ff + thumb_func_end TransferBGPaletteBuffer + + .align 2, 0 @ Don't pad with nop. |