mirror of
https://github.com/samsonjs/sectorlisp.git
synced 2026-03-25 09:05:48 +00:00
92 lines
2.9 KiB
ArmAsm
92 lines
2.9 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 2021 Justine Alexandra Roberts Tunney │
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│ Some size optimisations by Peter Ferrie │
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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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// compliant brainf*#k in 99 bytes
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// ++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++
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// ..+++.>>.<-.<.+++.------.--------.>>+.>++.[]$
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.code16
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.globl _start
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_start: mov $0x7e00,%di
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push %di
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Load: xor %ax,%ax
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int $0x16
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stosb
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cmp $'[',%al
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je Lsb
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cmp $']',%al
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je Rsb
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cmp $'$',%al
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jne Load
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pop %si
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Brain: lodsb
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cbw
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mov $0x0e,%bh
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mov (%di),%bl
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sub $'+',%al
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jz Inc # + 43
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dec %ax
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jz Get # , 44
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dec %ax
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jz Dec # - 45
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dec %ax
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jz Put # . 46
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cmp $'>'-'.',%al
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je Right # > 60 14
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cmp $'<'-'.',%al
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je Left # < 62 16
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cmp $']'-'.',%al
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je Loop # ] 91 45
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cmp $'['-'.',%al
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jne Brain # [ 93 47
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Do: cmp $1,%bl
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sbb %bl,%bl
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Loop: test %bl,%bl
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lodsw
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jz Brain
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xchg %ax,%si
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inc %si
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inc %si
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.byte 0x80
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Inc: incb (%di)
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jmp Brain
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Get: int $0x16
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stosb
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Left: dec %di
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.byte 0x80
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Dec: decb (%di)
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.byte 0x3C
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Right: inc %di
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.byte 0x84
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Put: xchg %bx,%ax
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int $0x10
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jmp Brain
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Rsb: pop %si
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mov %di,(%si)
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xchg %si,%ax
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.byte 0x3c
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Lsb: push %di
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stosw
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jmp Load
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Sig: .fill 510 - (. - _start), 1, 0xce
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.word 0xAA55
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.type Sig,@object
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