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Merge pull request #7 from peterferrie/master - thanks again!

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a little more
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Emmanuel Marty 2019-07-08 09:17:30 +02:00 committed by GitHub
commit 0c5bc1d218
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1 changed files with 10 additions and 8 deletions
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18
asm/8088/decompress_small_v1.S
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@ -92,17 +92,13 @@ lzsa1_decompress:
lodsw ; grab 16-bit length
test ax,ax ; bail if we hit EOD
jne short .got_matchlen
.done_decompressing:
pop ax ; retrieve the original decompression offset
xchg ax,di ; compute decompressed size
sub ax,di
ret ; done
je short .done_decompressing
db 81H ; mask inc ah/lodsb
; (*like jmp short .got_literals but faster)
.mid_matchlen:
lodsb ; grab single extra length byte
inc ah ; add 256
lodsb ; grab single extra length byte
.got_matchlen:
xchg cx,ax ; copy match length into cx
@ -116,3 +112,9 @@ lzsa1_decompress:
xchg si,ax ; restore ds:si
pop ds
jmp short .decode_token ; go decode another token
.done_decompressing:
pop ax ; retrieve the original decompression offset
xchg ax,di ; compute decompressed size
sub ax,di
ret ; done