arm9 MI_uncompress

3 files changed, 63 insertions, 53 deletions

diff --git a/arm9/asm/MI_uncompress.s b/arm9/asm/MI_uncompress.s
deleted file mode 100644
index 5f736e14..00000000
--- a/arm9/asm/MI_uncompress.s
+++ /dev/null
@@ -1,50 +0,0 @@
-    .include "asm/macros.inc"
-    .include "global.inc"
-
-    .text
-
-	arm_func_start MI_UncompressLZ8
-MI_UncompressLZ8: ; 0x020CE528
-	stmdb sp!, {r4-r6,lr}
-	ldr r5, [r0], #0x4
-	mov r2, r5, lsr #0x8
-_020CE534:
-	cmp r2, #0x0
-	ble _020CE5B4
-	ldrb lr, [r0], #0x1
-	mov r4, #0x8
-_020CE544:
-	subs r4, r4, #0x1
-	blt _020CE534
-	tst lr, #0x80
-	bne _020CE568
-	ldrb r6, [r0], #0x1
-	.word 0xE1416096
-	add r1, r1, #0x1
-	sub r2, r2, #0x1
-	b _020CE5A4
-_020CE568:
-	ldrb r5, [r0, #0x0]
-	mov r6, #0x3
-	add r3, r6, r5, asr #0x4
-	ldrb r6, [r0], #0x1
-	and r5, r6, #0xf
-	mov r12, r5, lsl #0x8
-	ldrb r6, [r0], #0x1
-	orr r5, r6, r12
-	add r12, r5, #0x1
-	sub r2, r2, r3
-_020CE590:
-	ldrb r5, [r1, -r12]
-	.word 0xE1415095
-	add r1, r1, #0x1
-	subs r3, r3, #0x1
-	bgt _020CE590
-_020CE5A4:
-	cmp r2, #0x0
-	movgt lr, lr, lsl #0x1
-	bgt _020CE544
-	b _020CE534
-_020CE5B4:
-	ldmia sp!, {r4-r6,lr}
-	bx lr
diff --git a/arm9/lib/include/MI_uncompress.h b/arm9/lib/include/MI_uncompress.h
index 55f28e27..defafa8c 100644
--- a/arm9/lib/include/MI_uncompress.h
+++ b/arm9/lib/include/MI_uncompress.h
@@ -1,6 +1,7 @@
-#ifndef NITRO_MI_UNCOMPRESS_H_
-#define NITRO_MI_UNCOMPRESS_H_
+#ifndef POKEDIAMOND_MI_UNCOMPRESS_H
+#define POKEDIAMOND_MI_UNCOMPRESS_H
 
 void MIi_UncompressBackward(void * bottom);
+void MI_UncompressLZ8(register const void *srcp, register void *destp);
 
-#endif //NITRO_MI_UNCOMPRESS_H_
+#endif //POKEDIAMOND_MI_UNCOMPRESS_H
diff --git a/arm9/lib/src/MI_uncompress.c b/arm9/lib/src/MI_uncompress.c
new file mode 100644
index 00000000..c6ad7e4e
--- /dev/null
+++ b/arm9/lib/src/MI_uncompress.c
@@ -0,0 +1,59 @@
+#include "function_target.h"
+#include "MI_uncompress.h"
+
+ARM_FUNC asm void MI_UncompressLZ8(register const void *srcp, register void *destp)
+{
+    stmfd sp!, {r4-r6, lr}
+
+    ldr r5, [r0], #4
+    mov r2, r5, lsr #8
+
+_020CE534:
+    cmp r2, #0
+    ble _020CE5B4
+
+    ldrb lr, [r0], #1
+    mov r4, #8
+
+_020CE544:
+    subs r4, r4, #1
+    blt _020CE534
+
+    tst lr, #0x80
+    bne _020CE568
+
+    ldrb r6, [r0], #1
+    swpb r6, r6, [r1]
+    add r1, r1, #1
+    sub r2, r2, #1
+    b _020CE5A4
+
+_020CE568:
+    ldrb r5, [r0, #0]
+    mov r6, #3
+    add r3, r6, r5, asr #4
+    ldrb r6, [r0], #1
+    and r5, r6, #0xf
+    mov r12, r5, lsl #8
+    ldrb r6, [r0], #1
+    orr r5, r6, r12
+    add r12, r5, #1
+    sub r2, r2, r3
+
+_020CE590:
+    ldrb r5, [r1, -r12]
+    swpb r5, r5, [r1]
+    add r1, r1, #1
+    subs r3, r3, #1
+    bgt _020CE590
+
+_020CE5A4:
+    cmp r2, #0
+    movgt lr, lr, lsl #1
+    bgt _020CE544
+    b _020CE534
+
+_020CE5B4:
+    ldmfd sp!, {r4-r6, lr}
+    bx lr
+}