mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-16 18:36:38 +00:00
ef83c25b0e
The initial check-in of compiler-rt/lib/nsan #94322 has a lot of style issues. Fix them before the history becomes more useful. Pull Request: https://github.com/llvm/llvm-project/pull/96142
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
//===-- nsan_suppressions.cc ----------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "nsan_suppressions.h"
|
|
#include "nsan_flags.h"
|
|
#include "sanitizer_common/sanitizer_placement_new.h"
|
|
#include "sanitizer_common/sanitizer_stacktrace.h"
|
|
#include "sanitizer_common/sanitizer_symbolizer.h"
|
|
|
|
using namespace __sanitizer;
|
|
using namespace __nsan;
|
|
|
|
SANITIZER_INTERFACE_WEAK_DEF(const char *, __nsan_default_suppressions, void) {
|
|
return 0;
|
|
}
|
|
|
|
const char kSuppressionFcmp[] = "fcmp";
|
|
const char kSuppressionConsistency[] = "consistency";
|
|
|
|
alignas(64) static char suppression_placeholder[sizeof(SuppressionContext)];
|
|
static SuppressionContext *suppression_ctx;
|
|
|
|
// The order should match the enum CheckKind.
|
|
static const char *kSuppressionTypes[] = {kSuppressionFcmp,
|
|
kSuppressionConsistency};
|
|
|
|
void __nsan::InitializeSuppressions() {
|
|
CHECK_EQ(nullptr, suppression_ctx);
|
|
suppression_ctx = new (suppression_placeholder)
|
|
SuppressionContext(kSuppressionTypes, ARRAY_SIZE(kSuppressionTypes));
|
|
suppression_ctx->ParseFromFile(flags().suppressions);
|
|
suppression_ctx->Parse(__nsan_default_suppressions());
|
|
}
|
|
|
|
static Suppression *GetSuppressionForAddr(uptr addr, const char *suppr_type) {
|
|
Suppression *s = nullptr;
|
|
|
|
// Suppress by module name.
|
|
SuppressionContext *suppressions = suppression_ctx;
|
|
if (const char *moduleName =
|
|
Symbolizer::GetOrInit()->GetModuleNameForPc(addr)) {
|
|
if (suppressions->Match(moduleName, suppr_type, &s))
|
|
return s;
|
|
}
|
|
|
|
// Suppress by file or function name.
|
|
SymbolizedStack *frames = Symbolizer::GetOrInit()->SymbolizePC(addr);
|
|
for (SymbolizedStack *cur = frames; cur; cur = cur->next) {
|
|
if (suppressions->Match(cur->info.function, suppr_type, &s) ||
|
|
suppressions->Match(cur->info.file, suppr_type, &s)) {
|
|
break;
|
|
}
|
|
}
|
|
frames->ClearAll();
|
|
return s;
|
|
}
|
|
|
|
Suppression *__nsan::GetSuppressionForStack(const StackTrace *stack,
|
|
CheckKind k) {
|
|
for (uptr i = 0, e = stack->size; i < e; i++) {
|
|
Suppression *s = GetSuppressionForAddr(
|
|
StackTrace::GetPreviousInstructionPc(stack->trace[i]),
|
|
kSuppressionTypes[static_cast<int>(k)]);
|
|
if (s)
|
|
return s;
|
|
}
|
|
return nullptr;
|
|
}
|