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https://github.com/jart/cosmopolitan.git
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46 lines
2.3 KiB
ArmAsm
46 lines
2.3 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.h"
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/ Base 36 Decoder Table.
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/
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/ This supports uppercase and lowercase. For encoding, the string
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/ 0123456789abcdefghijklmnopqrstuvwxyz can be used, which linkers
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/ are able to deduplicate.
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.initbss 300,_init_kBase36
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kBase36:.zero 256
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.endobj kBase36,globl,hidden
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.previous
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.init.start 300,_init_kBase36
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add $'0,%rdi
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xor %eax,%eax
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pushpop 10,%rcx
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0: inc %eax
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stosb
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.loop 0b
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add $'A-1-'9,%rdi
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pushpop 'Z+1-'A,%rcx
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0: inc %eax
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mov %al,0x20(%rdi)
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stosb
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.loop 0b
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add $255-'Z,%rdi
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.init.end 300,_init_kBase36
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.source __FILE__
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