cosmopolitan/libc/mem/cxx/malloc.S

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/*-*- 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
Copyright 2020 Justine Alexandra Roberts Tunney
This program is free software; you can redistribute it and/or modify │
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License. │
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of │
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software │
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "libc/macros.h"
.source __FILE__
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/ Allocates memory the C++ way.
/
/ @param %rdi is bytes to allocate
/ @param %rsi is ignored
/ @return new memory or NULL on OOM
_ZnamRKSt9nothrow_t:
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/ operator new[](unsigned long, std::nothrow_t const&)
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nop
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/ 𝑠𝑙𝑖𝑑𝑒
.endfn _ZnamRKSt9nothrow_t,weak
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_ZnwmRKSt9nothrow_t:
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/ operator new(unsigned long, std::nothrow_t const&)
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nop
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/ 𝑠𝑙𝑖𝑑𝑒
.endfn _ZnwmRKSt9nothrow_t,weak
_Znam:
/ operator new[](unsigned long)
nop
/ 𝑠𝑙𝑖𝑑𝑒
.endfn _Znam,weak
_Znwm:
/ operator new(unsigned long)
test %rdi,%rdi
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jne 1f
mov $1,%edi
1: jmp *hook$malloc(%rip)
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.endfn _Znwm,weak