This reverts commit r340860 due to failing tests.
llvm-svn: 340867
CmdArgs.push_back(Args.MakeArgString(std::string("-implib:") + ImplibName));
}
- if (TC.getSanitizerArgs().needsFuzzer()) {
- if (!Args.hasArg(options::OPT_shared))
- CmdArgs.push_back(
- Args.MakeArgString(std::string("-wholearchive:") +
- TC.getCompilerRTArgString(Args, "fuzzer", false)));
- CmdArgs.push_back(Args.MakeArgString("-debug"));
- // Prevent the linker from padding sections we use for instrumentation
- // arrays.
- CmdArgs.push_back(Args.MakeArgString("-incremental:no"));
- }
-
if (TC.getSanitizerArgs().needsAsanRt()) {
CmdArgs.push_back(Args.MakeArgString("-debug"));
CmdArgs.push_back(Args.MakeArgString("-incremental:no"));
SanitizerMask MSVCToolChain::getSupportedSanitizers() const {
SanitizerMask Res = ToolChain::getSupportedSanitizers();
Res |= SanitizerKind::Address;
- Res |= SanitizerKind::Fuzzer;
- Res |= SanitizerKind::FuzzerNoLink;
Res &= ~SanitizerKind::CFIMFCall;
return Res;
}
endif()
if (COMPILER_RT_HAS_SANITIZER_COMMON AND FUZZER_SUPPORTED_ARCH AND
- OS_NAME MATCHES "Android|Darwin|Linux|NetBSD|FreeBSD|OpenBSD|Fuchsia|Windows")
+ OS_NAME MATCHES "Android|Darwin|Linux|NetBSD|FreeBSD|OpenBSD|Fuchsia")
set(COMPILER_RT_HAS_FUZZER TRUE)
else()
set(COMPILER_RT_HAS_FUZZER FALSE)
#if LIBFUZZER_WINDOWS
#define ATTRIBUTE_INTERFACE __declspec(dllexport)
-// This is used for __sancov_lowest_stack which is needed for
-// -fsanitize-coverage=stack-depth. That feature is not yet available on
-// Windows, so make the symbol static to avoid linking errors.
-#define ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC \
- __attribute__((tls_model("initial-exec"))) thread_local static
#else
#define ATTRIBUTE_INTERFACE __attribute__((visibility("default")))
-#define ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC \
- ATTRIBUTE_INTERFACE __attribute__((tls_model("initial-exec"))) thread_local
#endif
namespace fuzzer {
return DirPath + GetSeparator() + FileName;
}
+std::string Basename(const std::string &Path, char Separator) {
+ size_t Pos = Path.rfind(Separator);
+ if (Pos == std::string::npos)
+ return Path;
+ assert(Pos < Path.size());
+ return Path.substr(Pos + 1);
+}
+
void DupAndCloseStderr() {
int OutputFd = DuplicateFile(2);
if (OutputFd > 0) {
char GetSeparator();
// Similar to the basename utility: returns the file name w/o the dir prefix.
-std::string Basename(const std::string &Path);
+std::string Basename(const std::string &Path, char Separator = GetSeparator());
FILE* OpenFile(int Fd, const char *Mode);
return St.st_size;
}
-std::string Basename(const std::string &Path) {
- size_t Pos = Path.rfind(GetSeparator());
- if (Pos == std::string::npos) return Path;
- assert(Pos < Path.size());
- return Path.substr(Pos + 1);
-}
-
void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
Vector<std::string> *V, bool TopDir) {
auto E = GetEpoch(Dir);
return IsFile(Path, Att);
}
-std::string Basename(const std::string &Path) {
- size_t Pos = Path.find_last_of("/\\");
- if (Pos == std::string::npos) return Path;
- assert(Pos < Path.size());
- return Path.substr(Pos + 1);
-}
-
-size_t FileSize(const std::string &Path) {
- WIN32_FILE_ATTRIBUTE_DATA attr;
- if (!GetFileAttributesExA(Path.c_str(), GetFileExInfoStandard, &attr)) {
- Printf("GetFileAttributesExA() failed for \"%s\" (Error code: %lu).\n",
- Path.c_str(), GetLastError());
- return 0;
- }
- ULARGE_INTEGER size;
- size.HighPart = attr.nFileSizeHigh;
- size.LowPart = attr.nFileSizeLow;
- return size.QuadPart;
-}
-
void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
Vector<std::string> *V, bool TopDir) {
auto E = GetEpoch(Dir);
uintptr_t __sancov_trace_pc_pcs[fuzzer::TracePC::kNumPCs];
// Used by -fsanitize-coverage=stack-depth to track stack depth
-ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC uintptr_t __sancov_lowest_stack;
+ATTRIBUTE_INTERFACE __attribute__((tls_model("initial-exec")))
+thread_local uintptr_t __sancov_lowest_stack;
namespace fuzzer {
}
std::string DisassembleCmd(const std::string &FileName) {
- Vector<std::string> command_vector;
- command_vector.push_back("dumpbin /summary > nul");
- if (ExecuteCommand(Command(command_vector)) == 0)
+ if (ExecuteCommand("dumpbin /summary > nul") == 0)
return "dumpbin /disasm " + FileName;
Printf("libFuzzer: couldn't find tool to disassemble (dumpbin)\n");
exit(1);
if(APPLE OR CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
list(APPEND LIBFUZZER_UNITTEST_LINK_FLAGS -lc++ -lpthread)
-elseif(WIN32)
- list(APPEND LIBFUZZER_UNITTEST_LINK_FLAGS -lstdc++)
else()
list(APPEND LIBFUZZER_UNITTEST_LINK_FLAGS -lstdc++ -lpthread)
endif()
EXPECT_EQ(Basename("/bar"), "bar");
EXPECT_EQ(Basename("foo/x"), "x");
EXPECT_EQ(Basename("foo/"), "");
-#if LIBFUZZER_WINDOWS
- EXPECT_EQ(Basename("foo\\bar"), "bar");
- EXPECT_EQ(Basename("foo\\bar/baz"), "baz");
- EXPECT_EQ(Basename("\\bar"), "bar");
- EXPECT_EQ(Basename("foo\\x"), "x");
- EXPECT_EQ(Basename("foo\\"), "");
-#endif
}
TEST(Fuzzer, CrossOver) {
//
//===----------------------------------------------------------------------===//
//
-// This file defines delimiters for Sanitizer Coverage's section. It contains
-// Windows specific tricks to coax the linker into giving us the start and stop
-// addresses of a section, as ELF linkers can do, to get the size of certain
-// arrays. According to https://msdn.microsoft.com/en-us/library/7977wcck.aspx
-// sections with the same name before "$" are sorted alphabetically by the
-// string that comes after "$" and merged into one section. We take advantage
-// of this by putting data we want the size of into the middle (M) of a section,
-// by using the letter "M" after "$". We get the start of this data (ie:
-// __start_section_name) by making the start variable come at the start of the
-// section (using the letter A after "$"). We do the same to get the end of the
-// data by using the letter "Z" after "$" to make the end variable come after
-// the data. Note that because of our technique the address of the start
-// variable is actually the address of data that comes before our middle
-// section. We also need to prevent the linker from adding any padding. Each
-// technique we use for this is explained in the comments below.
+// This file defines delimiters for Sanitizer Coverage's section.
//===----------------------------------------------------------------------===//
#include "sanitizer_platform.h"
#if SANITIZER_WINDOWS
#include <stdint.h>
+#pragma section(".SCOV$A", read, write) // NOLINT
+#pragma section(".SCOV$Z", read, write) // NOLINT
extern "C" {
-// The Guard array and counter array should both be merged into the .data
-// section to reduce the number of PE sections However, because PCTable is
-// constant it should be merged with the .rdata section.
-#pragma section(".SCOV$GA", read, write) // NOLINT
-// Use align(1) to avoid adding any padding that will mess up clients trying to
-// determine the start and end of the array.
-__declspec(allocate(".SCOV$GA")) __declspec(align(1)) uint64_t
- __start___sancov_guards = 0;
-#pragma section(".SCOV$GZ", read, write) // NOLINT
-__declspec(allocate(".SCOV$GZ")) __declspec(align(1)) uint64_t
- __stop___sancov_guards = 0;
-
-#pragma section(".SCOV$CA", read, write) // NOLINT
-__declspec(allocate(".SCOV$CA")) __declspec(align(1)) uint64_t
- __start___sancov_cntrs = 0;
-#pragma section(".SCOV$CZ", read, write) // NOLINT
-__declspec(allocate(".SCOV$CZ")) __declspec(align(1)) uint64_t
- __stop___sancov_cntrs = 0;
-
-#pragma comment(linker, "/MERGE:.SCOV=.data")
-
-// Use uint64_t so there won't be any issues if the linker tries to word align
-// the pc array.
-#pragma section(".SCOVP$A", read) // NOLINT
-__declspec(allocate(".SCOVP$A")) __declspec(align(1)) uint64_t
- __start___sancov_pcs = 0;
-#pragma section(".SCOVP$Z", read) // NOLINT
-__declspec(allocate(".SCOVP$Z")) __declspec(align(1)) uint64_t
- __stop___sancov_pcs = 0;
-
-#pragma comment(linker, "/MERGE:.SCOVP=.rdata")
+__declspec(allocate(".SCOV$A")) uint32_t __start___sancov_guards = 0;
+__declspec(allocate(".SCOV$Z")) uint32_t __stop___sancov_guards = 0;
}
-#endif // SANITIZER_WINDOWS
+#endif // SANITIZER_WINDOWS
compiler_rt_test_runtime(sanitizer_common)
# OpenBSD not supporting asan, cannot run the tests
- # Tests are broken for now on Windows
- if(COMPILER_RT_BUILD_LIBFUZZER
- AND NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD"
- AND NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "Windows" AND NOT ANDROID)
+ if(COMPILER_RT_BUILD_LIBFUZZER AND NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD" AND NOT ANDROID)
compiler_rt_test_runtime(fuzzer)
endif()
auto SecStart = SecStartEnd.first;
auto SecEnd = SecStartEnd.second;
Function *CtorFunc;
- auto SecStartPtr = IRB.CreatePointerCast(SecStart, Ty);
- // Account for the fact that on windows-msvc __start_* symbols actually
- // point to a uint64_t before the start of the array.
- if (TargetTriple.getObjectFormat() == Triple::COFF)
- SecStartPtr = IRB.CreateAdd(SecStartPtr,
- ConstantInt::get(IntptrTy, sizeof(uint64_t)));
std::tie(CtorFunc, std::ignore) = createSanitizerCtorAndInitFunctions(
M, SanCovModuleCtorName, InitFunctionName, {Ty, Ty},
- {SecStartPtr, IRB.CreatePointerCast(SecEnd, Ty)});
+ {IRB.CreatePointerCast(SecStart, Ty), IRB.CreatePointerCast(SecEnd, Ty)});
if (TargetTriple.supportsCOMDAT()) {
// Use comdat to dedup CtorFunc.
Function *InitFunction = declareSanitizerInitFunction(
M, SanCovPCsInitName, {IntptrPtrTy, IntptrPtrTy});
IRBuilder<> IRBCtor(Ctor->getEntryBlock().getTerminator());
- auto SecStartPtr = IRB.CreatePointerCast(SecStartEnd.first, IntptrPtrTy);
- // Account for the fact that on windows-msvc __start_pc_table actually
- // points to a uint64_t before the start of the PC table.
- if (TargetTriple.getObjectFormat() == Triple::COFF)
- SecStartPtr = IRB.CreateAdd(SecStartPtr,
- ConstantInt::get(IntptrTy, sizeof(uint64_t)));
- IRBCtor.CreateCall(
- InitFunction,
- {SecStartPtr, IRB.CreatePointerCast(SecStartEnd.second, IntptrPtrTy)});
+ IRBCtor.CreateCall(InitFunction,
+ {IRB.CreatePointerCast(SecStartEnd.first, IntptrPtrTy),
+ IRB.CreatePointerCast(SecStartEnd.second, IntptrPtrTy)});
}
// We don't reference these arrays directly in any of our runtime functions,
// so we need to prevent them from being dead stripped.
std::string
SanitizerCoverageModule::getSectionName(const std::string &Section) const {
- if (TargetTriple.getObjectFormat() == Triple::COFF) {
- if (Section == SanCovCountersSectionName)
- return ".SCOV$CM";
- if (Section == SanCovPCsSectionName)
- return ".SCOVP$M";
- return ".SCOV$GM"; // For SanCovGuardsSectionName.
- }
+ if (TargetTriple.getObjectFormat() == Triple::COFF)
+ return ".SCOV$M";
if (TargetTriple.isOSBinFormatMachO())
return "__DATA,__" + Section;
return "__" + Section;
+++ /dev/null
-; Checks that the PC and 8-bit Counter Arrays are placed in their own sections in COFF binaries.
-; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -sanitizer-coverage-inline-8bit-counters=1 -sanitizer-coverage-pc-table=1 -S | FileCheck %s
-target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-pc-windows-msvc19.14.26433"
-
-define void @foo() {
-entry:
- ret void
-}
-
-; CHECK-DAG: section ".SCOV{{\$}}CM",
-; CHECK-DAG: section ".SCOVP{{\$}}M",
projects / platform / upstream / llvm.git / commitdiff