mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
e75ffde09e
You can now build Cosmopolitan with Clang:
make -j8 MODE=llvm
o/llvm/examples/hello.com
The assembler and linker code is now friendly to LLVM too.
So it's not needed to configure Clang to use binutils under
the hood. If you love LLVM then you can now use pure LLVM.
78 lines
2.9 KiB
ArmAsm
78 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 2020 Justine Alexandra Roberts Tunney │
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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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#include "libc/macros.h"
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// @fileoverview Byte-order conversion functions.
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//
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// Endianness is deceptively complicated to the uninitiated. Many
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// helpers have been written by our top minds to address perceived
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// difficulties. These ones got through standardization processes.
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// To protect their legacy, all 19 functions have been implemented
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// in just 17 bytes.
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//
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// @see READ32LE(), READ32BE(), etc.
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// @asyncsignalsafe
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bswap_64:
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htobe64:
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htole64:
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be64toh:
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le64toh:mov %rdi,%rax
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bswap %rax
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ret
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.endfn le64toh,globl
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.endfn be64toh,globl
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.endfn htole64,globl
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.endfn htobe64,globl
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.endfn bswap_64,globl
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bswap_32:
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htobe32:
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htole32:
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be32toh:
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le32toh:
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ntohl:
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htonl: mov %edi,%eax
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bswap %eax
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ret
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.endfn htonl,globl
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.endfn htole32,globl
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.endfn le32toh,globl
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.endfn be32toh,globl
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.endfn htobe32,globl
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.endfn ntohl,globl
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.endfn bswap_32,globl
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bswap_16:
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htobe16:
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htole16:
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be16toh:
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le16toh:
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ntohs:
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htons: movzwl %di,%eax
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xchg %al,%ah
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ret
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.endfn htobe16,globl
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.endfn htons,globl
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.endfn le16toh,globl
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.endfn be16toh,globl
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.endfn htole16,globl
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.endfn ntohs,globl
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.endfn bswap_16,globl
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.source __FILE__
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