2020-06-15 14:18:57 +00:00
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/*-*- mode:asm; 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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│ 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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2020-06-16 02:01:28 +00:00
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.source __FILE__
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2020-06-15 14:18:57 +00:00
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/ Allocates uninitialized memory.
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/
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/ Returns a pointer to a newly allocated chunk of at least n bytes, or
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/ null if no space is available, in which case errno is set to ENOMEM
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/ on ANSI C systems.
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/
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/ If n is zero, malloc returns a minimum-sized chunk. (The minimum size
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/ is 32 bytes on 64bit systems.) Note that size_t is an unsigned type,
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/ so calls with arguments that would be negative if signed are
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/ interpreted as requests for huge amounts of space, which will often
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/ fail. The maximum supported value of n differs across systems, but is
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/ in all cases less than the maximum representable value of a size_t.
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/
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/ @param rdi is number of bytes needed
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/ @return new memory, or NULL w/ errno
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/ @note malloc(0) → malloc(32)
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/ @see dlmalloc()
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malloc: jmp *hook$malloc(%rip)
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.endfn malloc,globl
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