diff options
Diffstat (limited to 'asm/decompress.s')
| -rw-r--r-- | asm/decompress.s | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/asm/decompress.s b/asm/decompress.s new file mode 100644 index 000000000..99e449d8f --- /dev/null +++ b/asm/decompress.s @@ -0,0 +1,350 @@ + .include "constants/gba_constants.inc" + + .include "include/macros.inc" + + .syntax unified + + .text + + thumb_func_start unref_sub_800D42C +unref_sub_800D42C: @ 800D42C + push {r4-r7,lr} + mov r7, r10 + mov r6, r9 + mov r5, r8 + push {r5-r7} + sub sp, 0x24 + mov r9, r0 + str r1, [sp] + str r2, [sp, 0x4] + adds r5, r3, 0 + movs r0, 0x1 + mov r1, r9 + ands r0, r1 + cmp r0, 0 + bne _0800D44C + b _0800D5E4 +_0800D44C: + asrs r0, r1, 1 + adds r0, 0x4 + lsls r0, 24 + lsrs r0, 24 + str r0, [sp, 0x8] + movs r0, 0 + ldr r2, [sp] + cmp r0, r2 + blt _0800D460 + b _0800D674 +_0800D460: + movs r4, 0x8 + subs r1, r4, r1 + str r1, [sp, 0x10] +_0800D466: + movs r7, 0 + adds r0, 0x1 + str r0, [sp, 0x14] + ldr r0, [sp, 0x10] + cmp r7, r0 + bge _0800D4E2 + ldr r1, [sp, 0x8] + lsls r1, 8 + str r1, [sp, 0x18] + movs r2, 0 + mov r10, r2 + mov r0, r9 + movs r4, 0x8 + subs r0, r4, r0 + str r0, [sp, 0xC] +_0800D484: + movs r3, 0 + asrs r0, r7, 1 + adds r1, r7, 0 + movs r2, 0x1 + ands r1, r2 + str r1, [sp, 0x20] + lsls r0, 8 + mov r8, r0 + mov r12, r5 +_0800D496: + lsls r1, r3, 5 + ldr r4, [sp, 0x18] + adds r0, r5, r4 + adds r0, r1 + mov r1, r8 + adds r2, r0, r1 + mov r1, r12 + add r1, r8 + movs r6, 0xF +_0800D4A8: + ldr r4, [sp, 0x20] + cmp r4, 0 + bne _0800D4B8 + strb r4, [r1] + add r4, sp, 0x20 + ldrb r4, [r4] + strb r4, [r2, 0x10] + b _0800D4C6 +_0800D4B8: + mov r0, r10 + strb r0, [r1, 0x10] + movs r4, 0x80 + lsls r4, 1 + adds r4, r2, r4 + str r4, [sp, 0x1C] + strb r0, [r4] +_0800D4C6: + adds r2, 0x1 + adds r1, 0x1 + subs r6, 0x1 + cmp r6, 0 + bge _0800D4A8 + movs r0, 0x20 + add r12, r0 + adds r3, 0x1 + cmp r3, 0x7 + ble _0800D496 + adds r7, 0x1 + ldr r1, [sp, 0xC] + cmp r7, r1 + blt _0800D484 +_0800D4E2: + movs r7, 0 + movs r2, 0 +_0800D4E6: + movs r6, 0 + adds r4, r7, 0x1 + mov r8, r4 + lsls r4, r7, 5 +_0800D4EE: + adds r0, r6, 0x1 + mov r10, r0 + lsls r1, r6, 8 + adds r0, r1, 0 + adds r0, 0xC0 + adds r0, r5, r0 + adds r0, r4 + adds r1, r5, r1 + adds r1, r4 + movs r3, 0x1F +_0800D502: + strb r2, [r1] + strb r2, [r0] + adds r0, 0x1 + adds r1, 0x1 + subs r3, 0x1 + cmp r3, 0 + bge _0800D502 + mov r6, r10 + cmp r6, 0x7 + ble _0800D4EE + mov r7, r8 + cmp r7, 0x1 + ble _0800D4E6 + mov r1, r9 + cmp r1, 0x5 + bne _0800D528 + movs r2, 0x90 + lsls r2, 1 + adds r5, r2 +_0800D528: + movs r7, 0 + cmp r7, r9 + bge _0800D5BE +_0800D52E: + movs r3, 0 + adds r7, 0x1 + mov r8, r7 + cmp r3, r9 + bge _0800D59E +_0800D538: + adds r3, 0x1 + mov r10, r3 + ldr r4, [sp, 0x4] + adds r4, 0x20 + adds r7, r5, 0 + adds r7, 0x20 + movs r0, 0x12 + adds r0, r5 + mov r12, r0 + ldr r2, [sp, 0x4] + adds r3, r5, 0 + movs r6, 0x3 +_0800D550: + ldrb r0, [r2] + mov r1, r12 + strb r0, [r1] + ldrb r0, [r2, 0x1] + strb r0, [r1, 0x1] + ldrb r0, [r2, 0x2] + strb r0, [r1, 0x1E] + ldrb r0, [r2, 0x3] + strb r0, [r1, 0x1F] + movs r0, 0x81 + lsls r0, 1 + adds r1, r3, r0 + ldrb r0, [r2, 0x10] + strb r0, [r1] + ldr r0, _0800D5A8 @ =0x00000103 + adds r1, r3, r0 + ldrb r0, [r2, 0x11] + strb r0, [r1] + movs r0, 0x90 + lsls r0, 1 + adds r1, r3, r0 + ldrb r0, [r2, 0x12] + strb r0, [r1] + ldr r0, _0800D5AC @ =0x00000121 + adds r1, r3, r0 + ldrb r0, [r2, 0x13] + strb r0, [r1] + movs r1, 0x4 + add r12, r1 + adds r2, 0x4 + adds r3, 0x4 + subs r6, 0x1 + cmp r6, 0 + bge _0800D550 + str r4, [sp, 0x4] + adds r5, r7, 0 + mov r3, r10 + cmp r3, r9 + blt _0800D538 +_0800D59E: + mov r2, r9 + cmp r2, 0x7 + bne _0800D5B0 + adds r5, 0x20 + b _0800D5B8 + .align 2, 0 +_0800D5A8: .4byte 0x00000103 +_0800D5AC: .4byte 0x00000121 +_0800D5B0: + mov r4, r9 + cmp r4, 0x5 + bne _0800D5B8 + adds r5, 0x60 +_0800D5B8: + mov r7, r8 + cmp r7, r9 + blt _0800D52E +_0800D5BE: + mov r0, r9 + cmp r0, 0x7 + bne _0800D5CC + movs r1, 0x80 + lsls r1, 1 + adds r5, r1 + b _0800D5D8 +_0800D5CC: + mov r2, r9 + cmp r2, 0x5 + bne _0800D5D8 + movs r4, 0xF0 + lsls r4, 1 + adds r5, r4 +_0800D5D8: + ldr r0, [sp, 0x14] + ldr r1, [sp] + cmp r0, r1 + bge _0800D5E2 + b _0800D466 +_0800D5E2: + b _0800D674 +_0800D5E4: + movs r6, 0 + ldr r2, [sp] + cmp r6, r2 + bge _0800D674 +_0800D5EC: + adds r6, 0x1 + mov r10, r6 + mov r4, r9 + cmp r4, 0x6 + bne _0800D604 + movs r0, 0 + movs r3, 0xFF +_0800D5FA: + strb r0, [r5] + adds r5, 0x1 + subs r3, 0x1 + cmp r3, 0 + bge _0800D5FA +_0800D604: + movs r7, 0 + cmp r7, r9 + bge _0800D658 +_0800D60A: + adds r7, 0x1 + mov r8, r7 + mov r1, r9 + lsls r0, r1, 5 + cmp r1, 0x6 + bne _0800D624 + movs r1, 0 + movs r3, 0x1F +_0800D61A: + strb r1, [r5] + adds r5, 0x1 + subs r3, 0x1 + cmp r3, 0 + bge _0800D61A +_0800D624: + adds r1, r0, 0 + cmp r1, 0 + ble _0800D63E + adds r3, r1, 0 +_0800D62C: + ldr r2, [sp, 0x4] + ldrb r0, [r2] + strb r0, [r5] + adds r2, 0x1 + str r2, [sp, 0x4] + adds r5, 0x1 + subs r3, 0x1 + cmp r3, 0 + bne _0800D62C +_0800D63E: + mov r4, r9 + cmp r4, 0x6 + bne _0800D652 + movs r0, 0 + movs r3, 0x1F +_0800D648: + strb r0, [r5] + adds r5, 0x1 + subs r3, 0x1 + cmp r3, 0 + bge _0800D648 +_0800D652: + mov r7, r8 + cmp r7, r9 + blt _0800D60A +_0800D658: + mov r0, r9 + cmp r0, 0x6 + bne _0800D66C + movs r0, 0 + movs r3, 0xFF +_0800D662: + strb r0, [r5] + adds r5, 0x1 + subs r3, 0x1 + cmp r3, 0 + bge _0800D662 +_0800D66C: + mov r6, r10 + ldr r1, [sp] + cmp r6, r1 + blt _0800D5EC +_0800D674: + add sp, 0x24 + pop {r3-r5} + mov r8, r3 + mov r9, r4 + mov r10, r5 + pop {r4-r7} + pop {r0} + bx r0 + thumb_func_end unref_sub_800D42C + + .align 2, 0 |