45 lines
2.4 KiB
ArmAsm
45 lines
2.4 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 sw=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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.h"
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.source __FILE__
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/ Supplies basename(argv[0]) The GNU Way.
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.initbss 400,_init_program_invocation_short_name
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program_invocation_short_name:
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.quad 0
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.endobj program_invocation_short_name,globl
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.previous
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.init.start 400,_init_program_invocation_short_name
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push %rsi
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mov (%r13),%rsi
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mov %rsi,%rcx
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1: lodsb
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cmp $'/,%al
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cmoveq %rsi,%rcx
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cmp $'\\,%al
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cmoveq %rsi,%rcx
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test %al,%al
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jnz 1b
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xchg %rcx,%rax
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pop %rsi
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stosq
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.init.end 400,_init_program_invocation_short_name
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