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Sync VEX/LICENSE.GPL with top-level COPYING file. We used 3 different addresses for writing to the FSF to receive a copy of the GPL. Replace all different variants with an URL <http://www.gnu.org/licenses/>. The following files might still have some slightly different (L)GPL copyright notice because they were derived from other programs: - files under coregrind/m_demangle which come from libiberty: cplus-dem.c, d-demangle.c, demangle.h, rust-demangle.c, safe-ctype.c and safe-ctype.h - coregrind/m_demangle/dyn-string.[hc] derived from GCC. - coregrind/m_demangle/ansidecl.h derived from glibc. - VEX files for FMA detived from glibc: host_generic_maddf.h and host_generic_maddf.c - files under coregrin/m_debuginfo derived from LZO: lzoconf.h, lzodefs.h, minilzo-inl.c and minilzo.h - files under coregrind/m_gdbserver detived from GDB: gdb/signals.h, inferiors.c, regcache.c, regcache.h, regdef.h, remote-utils.c, server.c, server.h, signals.c, target.c, target.h and utils.c Plus the following test files: - none/tests/ppc32/testVMX.c derived from testVMX. - ppc tests derived from QEMU: jm-insns.c, ppc64_helpers.h and test_isa_3_0.c - tests derived from bzip2 (with embedded GPL text in code): hackedbz2.c, origin5-bz2.c, varinfo6.c - tests detived from glibc: str_tester.c, pth_atfork1.c - test detived from GCC libgomp: tc17_sembar.c - performance tests derived from bzip2 or tinycc (with embedded GPL text in code): bz2.c, test_input_for_tinycc.c and tinycc.c
108 lines
4.3 KiB
C
108 lines
4.3 KiB
C
/*--------------------------------------------------------------------*/
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/*--- Client-space code for DRD. drd_libstdcxx_intercepts.c ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of DRD, a thread error detector.
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Copyright (C) 2014-2017 Bart Van Assche <bvanassche@acm.org>.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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The GNU General Public License is contained in the file COPYING.
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*/
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/* ---------------------------------------------------------------------
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ALL THE CODE IN THIS FILE RUNS ON THE SIMULATED CPU.
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These functions are not called directly - they're the targets of code
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redirection or load notifications (see pub_core_redir.h for info).
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They're named weirdly so that the intercept code can find them when the
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shared object is initially loaded.
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Note that this filename has the "drd_" prefix because it can appear
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in stack traces, and the "drd_" makes it a little clearer that it
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originates from Valgrind.
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------------------------------------------------------------------ */
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#include "drd_basics.h" /* DRD_() */
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#include "drd_clientreq.h"
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#include "pub_tool_redir.h" /* VG_WRAP_FUNCTION_ZZ() */
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/* From <cxxabi.h> */
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int __cxa_guard_acquire(void* guard);
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void __cxa_guard_release(void* guard) __attribute__((__nothrow__));
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void __cxa_guard_abort(void* guard) __attribute__((__nothrow__));
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#define LIBSTDCXX_FUNC(ret_ty, zf, implf, argl_decl, argl) \
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ret_ty VG_WRAP_FUNCTION_ZZ(VG_Z_LIBSTDCXX_SONAME,zf) argl_decl; \
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ret_ty VG_WRAP_FUNCTION_ZZ(VG_Z_LIBSTDCXX_SONAME,zf) argl_decl \
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{ return implf argl; }
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/*
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* Not inlining one of the intercept functions will cause the regression
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* tests to fail because this would cause an additional stackfram to appear
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* in the output. The __always_inline macro guarantees that inlining will
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* happen, even when compiling with optimization disabled.
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*/
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#undef __always_inline /* since already defined in <cdefs.h> */
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#if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 2
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#define __always_inline __inline__ __attribute__((always_inline))
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#else
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#define __always_inline __inline__
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#endif
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static __always_inline
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int __cxa_guard_acquire_intercept(void *guard)
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{
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int ret;
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OrigFn fn;
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VALGRIND_GET_ORIG_FN(fn);
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VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__PRE_MUTEX_LOCK,
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guard, mutex_type_cxa_guard, 0, 0, 0);
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CALL_FN_W_W(ret, fn, guard);
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VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__POST_MUTEX_LOCK,
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guard, 1, 0, 0, 0);
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if (ret == 0) {
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VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__PRE_MUTEX_UNLOCK,
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guard, mutex_type_cxa_guard, 0, 0, 0);
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VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__POST_MUTEX_UNLOCK,
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guard, 0, 0, 0, 0);
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}
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return ret;
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}
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LIBSTDCXX_FUNC(int, ZuZucxaZuguardZuacquire, __cxa_guard_acquire_intercept,
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(void *guard), (guard));
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LIBSTDCXX_FUNC(int, ZuZucxaZuguardZuacquireZAZACXXABIZu1Zd3,
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__cxa_guard_acquire_intercept, (void *guard), (guard));
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static __always_inline
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void __cxa_guard_abort_release_intercept(void *guard)
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{
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int ret;
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OrigFn fn;
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VALGRIND_GET_ORIG_FN(fn);
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VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__PRE_MUTEX_UNLOCK,
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guard, mutex_type_cxa_guard, 0, 0, 0);
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CALL_FN_W_W(ret, fn, guard);
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VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__POST_MUTEX_UNLOCK,
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guard, 0, 0, 0, 0);
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}
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LIBSTDCXX_FUNC(void, ZuZucxaZuguardZurelease,
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__cxa_guard_abort_release_intercept, (void *guard), (guard));
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LIBSTDCXX_FUNC(void, ZuZucxaZuguardZuabort,
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__cxa_guard_abort_release_intercept, (void *guard), (guard));
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