mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-27 22:03:31 +01:00
Merge branch 'link_ftrapv_clang32'
This commit is contained in:
Nick Mathewson
commit
649785d464
104
LICENSE
104
LICENSE
@ -270,6 +270,110 @@ src/ext/readpassphrase.[ch] are distributed under this license:
|
||||
Agency (DARPA) and Air Force Research Laboratory, Air Force
|
||||
Materiel Command, USAF, under agreement number F39502-99-1-0512.
|
||||
|
||||
===============================================================================
|
||||
src/ext/mulodi4.c is distributed under this license:
|
||||
|
||||
=========================================================================
|
||||
compiler_rt License
|
||||
=========================================================================
|
||||
|
||||
The compiler_rt library is dual licensed under both the
|
||||
University of Illinois "BSD-Like" license and the MIT license.
|
||||
As a user of this code you may choose to use it under either
|
||||
license. As a contributor, you agree to allow your code to be
|
||||
used under both.
|
||||
|
||||
Full text of the relevant licenses is included below.
|
||||
|
||||
=========================================================================
|
||||
|
||||
University of Illinois/NCSA
|
||||
Open Source License
|
||||
|
||||
Copyright (c) 2009-2016 by the contributors listed in CREDITS.TXT
|
||||
|
||||
All rights reserved.
|
||||
|
||||
Developed by:
|
||||
|
||||
LLVM Team
|
||||
|
||||
University of Illinois at Urbana-Champaign
|
||||
|
||||
http://llvm.org
|
||||
|
||||
Permission is hereby granted, free of charge, to any person
|
||||
obtaining a copy of this software and associated documentation
|
||||
files (the "Software"), to deal with the Software without
|
||||
restriction, including without limitation the rights to use,
|
||||
copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the
|
||||
Software is furnished to do so, subject to the following
|
||||
conditions:
|
||||
|
||||
* Redistributions of source code must retain the above
|
||||
copyright notice, this list of conditions and the following
|
||||
disclaimers.
|
||||
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following
|
||||
disclaimers in the documentation and/or other materials
|
||||
provided with the distribution.
|
||||
|
||||
* Neither the names of the LLVM Team, University of Illinois
|
||||
at Urbana-Champaign, nor the names of its contributors may
|
||||
be used to endorse or promote products derived from this
|
||||
Software without specific prior written permission.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
||||
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT
|
||||
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||||
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||
OTHER DEALINGS WITH THE SOFTWARE.
|
||||
|
||||
=========================================================================
|
||||
|
||||
Copyright (c) 2009-2015 by the contributors listed in CREDITS.TXT
|
||||
|
||||
Permission is hereby granted, free of charge, to any person
|
||||
obtaining a copy of this software and associated documentation
|
||||
files (the "Software"), to deal in the Software without
|
||||
restriction, including without limitation the rights to use,
|
||||
copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the
|
||||
Software is furnished to do so, subject to the following
|
||||
conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
||||
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
||||
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||||
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||
OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
=========================================================================
|
||||
Copyrights and Licenses for Third Party Software Distributed with LLVM:
|
||||
=========================================================================
|
||||
|
||||
The LLVM software contains code written by third parties. Such
|
||||
software will have its own individual LICENSE.TXT file in the
|
||||
directory in which it appears. This file will describe the
|
||||
copyrights, license, and restrictions which apply to that code.
|
||||
|
||||
The disclaimer of warranty in the University of Illinois Open
|
||||
Source License applies to all code in the LLVM Distribution, and
|
||||
nothing in any of the other licenses gives permission to use the
|
||||
names of the LLVM Team or the University of Illinois to endorse
|
||||
or promote products derived from this Software.
|
||||
|
||||
===============================================================================
|
||||
If you got Tor as a static binary with OpenSSL included, then you should know:
|
||||
"This product includes software developed by the OpenSSL Project
|
||||
|
||||
4
changes/bug19079
Normal file
4
changes/bug19079
Normal file
@ -0,0 +1,4 @@
|
||||
o Minor features (build):
|
||||
- Detect and work around a libclang_rt problem that prevents clang from
|
||||
finding __mulodi4() on some 32-bit platforms. This clang bug would keep
|
||||
-ftrapv from linking on those systems. Closes ticket 19079.
|
||||
40
configure.ac
40
configure.ac
@ -801,6 +801,46 @@ fi
|
||||
CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
|
||||
CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
|
||||
|
||||
if test "$have_clang" = "yes"; then
|
||||
saved_CFLAGS="$CFLAGS"
|
||||
CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
|
||||
AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
|
||||
AC_LINK_IFELSE([
|
||||
AC_LANG_SOURCE([[
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
|
||||
* (int64_t)atoi(argv[3]);
|
||||
return x == 9;
|
||||
} ]])],
|
||||
[ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
|
||||
[ftrapv_can_link=no; AC_MSG_RESULT([no])])
|
||||
mulodi_fixes_ftrapv=no
|
||||
if test "$ftrapv_can_link" = "no"; then
|
||||
AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
|
||||
AC_LINK_IFELSE([
|
||||
AC_LANG_SOURCE([[
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
|
||||
*overflow=0;
|
||||
return a;
|
||||
}
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
|
||||
* (int64_t)atoi(argv[3]);
|
||||
return x == 9;
|
||||
} ]])],
|
||||
[mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
|
||||
[mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
|
||||
fi
|
||||
AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
|
||||
CFLAGS="$saved_CFLAGS"
|
||||
fi
|
||||
|
||||
dnl These cflags add bunches of branches, and we haven't been able to
|
||||
dnl persuade ourselves that they're suitable for code that needs to be
|
||||
dnl constant time.
|
||||
|
||||
@ -62,7 +62,14 @@ else
|
||||
readpassphrase_source=
|
||||
endif
|
||||
|
||||
if ADD_MULODI4
|
||||
mulodi4_source=src/ext/mulodi/mulodi4.c
|
||||
else
|
||||
mulodi4_source=
|
||||
endif
|
||||
|
||||
LIBOR_CTIME_A_SRC = \
|
||||
$(mulodi4_source) \
|
||||
src/ext/csiphash.c \
|
||||
src/common/di_ops.c
|
||||
|
||||
|
||||
@ -77,3 +77,10 @@ readpassphrase.[ch]
|
||||
timeouts/
|
||||
|
||||
William Ahern's hierarchical timer-wheel implementation. MIT license.
|
||||
|
||||
mulodi/
|
||||
|
||||
Contains an overflow-checking 64-bit signed integer multiply
|
||||
from LLVM's compiler_rt. For some reason, this is missing from
|
||||
32-bit libclang in many places. Dual licensed MIT-license and
|
||||
BSD-like license; see mulodi/LICENSE.TXT.
|
||||
|
||||
91
src/ext/mulodi/LICENSE.TXT
Normal file
91
src/ext/mulodi/LICENSE.TXT
Normal file
@ -0,0 +1,91 @@
|
||||
==============================================================================
|
||||
compiler_rt License
|
||||
==============================================================================
|
||||
|
||||
The compiler_rt library is dual licensed under both the University of Illinois
|
||||
"BSD-Like" license and the MIT license. As a user of this code you may choose
|
||||
to use it under either license. As a contributor, you agree to allow your code
|
||||
to be used under both.
|
||||
|
||||
Full text of the relevant licenses is included below.
|
||||
|
||||
==============================================================================
|
||||
|
||||
University of Illinois/NCSA
|
||||
Open Source License
|
||||
|
||||
Copyright (c) 2009-2016 by the contributors listed in CREDITS.TXT
|
||||
|
||||
All rights reserved.
|
||||
|
||||
Developed by:
|
||||
|
||||
LLVM Team
|
||||
|
||||
University of Illinois at Urbana-Champaign
|
||||
|
||||
http://llvm.org
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal with
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||
of the Software, and to permit persons to whom the Software is furnished to do
|
||||
so, subject to the following conditions:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice,
|
||||
this list of conditions and the following disclaimers.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimers in the
|
||||
documentation and/or other materials provided with the distribution.
|
||||
|
||||
* Neither the names of the LLVM Team, University of Illinois at
|
||||
Urbana-Champaign, nor the names of its contributors may be used to
|
||||
endorse or promote products derived from this Software without specific
|
||||
prior written permission.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
|
||||
SOFTWARE.
|
||||
|
||||
==============================================================================
|
||||
|
||||
Copyright (c) 2009-2015 by the contributors listed in CREDITS.TXT
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in
|
||||
all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
THE SOFTWARE.
|
||||
|
||||
==============================================================================
|
||||
Copyrights and Licenses for Third Party Software Distributed with LLVM:
|
||||
==============================================================================
|
||||
The LLVM software contains code written by third parties. Such software will
|
||||
have its own individual LICENSE.TXT file in the directory in which it appears.
|
||||
This file will describe the copyrights, license, and restrictions which apply
|
||||
to that code.
|
||||
|
||||
The disclaimer of warranty in the University of Illinois Open Source License
|
||||
applies to all code in the LLVM Distribution, and nothing in any of the
|
||||
other licenses gives permission to use the names of the LLVM Team or the
|
||||
University of Illinois to endorse or promote products derived from this
|
||||
Software.
|
||||
|
||||
64
src/ext/mulodi/mulodi4.c
Normal file
64
src/ext/mulodi/mulodi4.c
Normal file
@ -0,0 +1,64 @@
|
||||
/*===-- mulodi4.c - Implement __mulodi4 -----------------------------------===
|
||||
*
|
||||
* The LLVM Compiler Infrastructure
|
||||
*
|
||||
* This file is dual licensed under the MIT and the University of Illinois Open
|
||||
* Source Licenses. See LICENSE.TXT for details.
|
||||
*
|
||||
* ===----------------------------------------------------------------------===
|
||||
*
|
||||
* This file implements __mulodi4 for the compiler_rt library.
|
||||
*
|
||||
* ===----------------------------------------------------------------------===
|
||||
*/
|
||||
|
||||
#if 0
|
||||
#include "int_lib.h"
|
||||
#else
|
||||
#define COMPILER_RT_ABI
|
||||
#define di_int int64_t
|
||||
#include "torint.h"
|
||||
#endif
|
||||
|
||||
/* Returns: a * b */
|
||||
|
||||
/* Effects: sets *overflow to 1 if a * b overflows */
|
||||
|
||||
COMPILER_RT_ABI di_int
|
||||
__mulodi4(di_int a, di_int b, int* overflow)
|
||||
{
|
||||
const int N = (int)(sizeof(di_int) * CHAR_BIT);
|
||||
const di_int MIN = (di_int)1 << (N-1);
|
||||
const di_int MAX = ~MIN;
|
||||
*overflow = 0;
|
||||
di_int result = a * b;
|
||||
if (a == MIN)
|
||||
{
|
||||
if (b != 0 && b != 1)
|
||||
*overflow = 1;
|
||||
return result;
|
||||
}
|
||||
if (b == MIN)
|
||||
{
|
||||
if (a != 0 && a != 1)
|
||||
*overflow = 1;
|
||||
return result;
|
||||
}
|
||||
di_int sa = a >> (N - 1);
|
||||
di_int abs_a = (a ^ sa) - sa;
|
||||
di_int sb = b >> (N - 1);
|
||||
di_int abs_b = (b ^ sb) - sb;
|
||||
if (abs_a < 2 || abs_b < 2)
|
||||
return result;
|
||||
if (sa == sb)
|
||||
{
|
||||
if (abs_a > MAX / abs_b)
|
||||
*overflow = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (abs_a > MIN / -abs_b)
|
||||
*overflow = 1;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user