42 lines
2.2 KiB
ArmAsm
42 lines
2.2 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
|
|
│vi: set et ft=asm ts=8 sw=8 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/macros.h"
|
|
.text.startup
|
|
|
|
/ Seventeen byte decompressor.
|
|
/
|
|
/ @param di points to output buffer
|
|
/ @param si points to uint8_t {len₁,byte₁}, ..., {0,0}
|
|
/ @mode long,legacy,real
|
|
rldecode:
|
|
.leafprologue
|
|
.profilable
|
|
xor %ecx,%ecx
|
|
0: lodsb
|
|
xchg %al,%cl
|
|
lodsb
|
|
jrcxz 2f
|
|
1: stosb
|
|
loop 1b
|
|
jmp 0b
|
|
2: .leafepilogue
|
|
.endfn rldecode,globl
|
|
.source __FILE__
|