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Remove all assembly optimizations for htonl and htons

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The builtin bswap is already used if optimziation is enabled for
GCC 4.8+, so glibc symbols will be used in a very limited scenarios.

Also, gcc generated code is quite similar to all but ia64 and i386
htons.

Checked on alpha, i686, and ia64.
This commit is contained in:
Adhemerval Zanella 2022-10-24 11:35:04 -03:00
parent 29ff5b5b72
commit be930668ec
5 changed files with 0 additions and 175 deletions
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43
sysdeps/alpha/htonl.S
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@ -1,43 +0,0 @@
/* Copyright (C) 1996-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
ENTRY(htonl)
#ifdef PROF
ldgp gp, 0(pv)
.set noat
lda AT, _mcount
jsr AT, (AT), _mcount
.set at
.prologue 1
#else
.prologue 0
#endif
inslh a0, 7, t0 # t0 = 0000000000AABBCC
inswl a0, 3, t1 # t1 = 000000CCDD000000
or t1, t0, t1 # t1 = 000000CCDDAABBCC
srl t1, 16, t2 # t2 = 0000000000CCDDAA
zapnot t1, 0x0A, t0 # t0 = 00000000DD00BB00
zapnot t2, 0x05, t3 # t3 = 0000000000CC00AA
addl t0, t3, v0 # v0 = ssssssssDDCCBBAA
ret
END(htonl)
weak_alias (htonl, ntohl)

39
sysdeps/alpha/htons.S
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@ -1,39 +0,0 @@
/* Copyright (C) 1996-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
ENTRY(htons)
#ifdef PROF
ldgp gp, 0(pv)
.set noat
lda AT, _mcount
jsr AT, (AT), _mcount
.set at
.prologue 1
#else
.prologue 0
#endif
extwh a0, 7, t1 # t1 = bb00
extbl a0, 1, v0 # v0 = 00aa
bis v0, t1, v0 # v0 = bbaa
ret
END(htons)
weak_alias (htons, ntohs)

35
sysdeps/i386/htons.S
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@ -1,35 +0,0 @@
/* Change byte order in word. For Intel 80x86, x >= 3.
Copyright (C) 1997-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include "asm-syntax.h"
/*
INPUT PARAMETERS:
word (sp + 4)
*/
.text
ENTRY (htons)
movl 4(%esp), %eax
andl $0xffff, %eax
rorw $8, %ax
ret
END (htons)
weak_alias (htons, ntohs)

29
sysdeps/ia64/htonl.S
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@ -1,29 +0,0 @@
/* Change byte order in 32-bit value. ia64 version.
Copyright (C) 2000-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
ENTRY(htonl)
shl ret0 = r32, 32
;;
mux1 ret0 = ret0, @rev
ret
END(htonl)
weak_alias (htonl, ntohl)

29
sysdeps/ia64/htons.S
View File

@ -1,29 +0,0 @@
/* Change byte order in 16-bit value. ia64 version.
Copyright (C) 2000-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
ENTRY(htons)
shl ret0 = r32, 48
;;
mux1 ret0 = ret0, @rev
ret
END(htons)
weak_alias (htons, ntohs)