/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8     -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8                                     :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.h"
.source	__FILE__

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