Leahnaya/Pokemon-Gen3-to-Gen-X
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Implement alignment fix option

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Lorenzooone 2024-03-13 19:33:01 +01:00
parent b7c3bb550f
commit 401767e16a
1 changed files with 9 additions and 2 deletions
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11
source/decompress.s
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@ -23,6 +23,8 @@
.section .iwram, "ax", %progbits
#endif
#define ALIGNMENT_FIX
swi_LZ77UnCompWrite16bit:
swi_LZ77UnCompWrite8bit:
stmfd sp!, {r3 - r7}
@ -49,7 +51,7 @@ swi_LZ77UnCompWrite8bit:
tst r1, #1
moveq r7, r4
orrne r7, r4, lsl #8
strneh r7, [r1]
strneh r7, [r1, #-1]
add r1, #1
@ check if decompressed length has been reached.
@ -85,7 +87,12 @@ swi_LZ77UnCompWrite8bit:
beq .lz77_optimized_16bit_copy_window_loop
ldrb r6, [r5], #1
orr r7, r6, lsl #8
#ifdef ALIGNMENT_FIX
subs r1, #1
strh r7, [r1], #2
#else
strh r7, [r1], #1
#endif
subs r4, #1
.lz77_optimized_16bit_copy_window_loop:
ldrh r6, [r5], #2
@ -109,7 +116,7 @@ swi_LZ77UnCompWrite8bit:
b .lz77_16bit_loop
.lz77_16bit_copy_window_not_aligned_check:
sub r1, #1
subs r1, #1
cmp r1, r5
beq .set_previous_byte
tst r5, #1