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[libFuzzer] Expose Sanitizer Coverage functions from libFuzzer.

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We need to expose Sanitizer Coverage's functions that are rewritten with a
different implementation, so compiler-rt's libraries have access to it.

Differential Revision: https://reviews.llvm.org/D28618

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292736 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marcos Pividori 2017-01-22 01:27:38 +00:00
parent 4509e88ac3
commit 6c13258b28
2 changed files with 22 additions and 12 deletions
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6
lib/Fuzzer/FuzzerDefs.h
View File

@ -53,6 +53,12 @@
# define ALWAYS_INLINE
#endif // __clang__
#if LIBFUZZER_WINDOWS
#define ATTRIBUTE_INTERFACE __declspec(dllexport)
#else
#define ATTRIBUTE_INTERFACE __attribute__((visibility("default")))
#endif
namespace fuzzer {
template <class T> T Min(T a, T b) { return a < b ? a : b; }

28
lib/Fuzzer/FuzzerTracePC.cpp
View File

@ -257,45 +257,48 @@ inline ALWAYS_INLINE uintptr_t GetPreviousInstructionPc(void* pc) {
} // namespace fuzzer
extern "C" {
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_pc_guard(uint32_t *Guard) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleTrace(Guard, PC);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_pc_guard_init(uint32_t *Start, uint32_t *Stop) {
fuzzer::TPC.HandleInit(Start, Stop);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_pc_indir(uintptr_t Callee) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCallerCallee(PC, Callee);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_cmp8(uint64_t Arg1, uint64_t Arg2) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_cmp4(uint32_t Arg1, uint32_t Arg2) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_cmp2(uint16_t Arg1, uint16_t Arg2) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_cmp1(uint8_t Arg1, uint8_t Arg2) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Arg1, Arg2);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_switch(uint64_t Val, uint64_t *Cases) {
uint64_t N = Cases[0];
uint64_t ValSizeInBits = Cases[1];
@ -320,20 +323,21 @@ void __sanitizer_cov_trace_switch(uint64_t Val, uint64_t *Cases) {
fuzzer::TPC.HandleCmp(PC + i, Token, (uint64_t)(0));
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_div4(uint32_t Val) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Val, (uint32_t)0);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_div8(uint64_t Val) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Val, (uint64_t)0);
}
__attribute__((visibility("default")))
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_gep(uintptr_t Idx) {
uintptr_t PC = fuzzer::GetPreviousInstructionPc(__builtin_return_address(0));
fuzzer::TPC.HandleCmp(PC, Idx, (uintptr_t)0);
}
} // extern "C"