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//===-- sanitizer_symbolizer.h ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Symbolizer is intended to be used by both
// AddressSanitizer and ThreadSanitizer to symbolize a given
// address. It is an analogue of addr2line utility and allows to map
// instruction address to a location in source code at run-time.
//
// Symbolizer is planned to use debug information (in DWARF format)
// in a binary via interface defined in "llvm/DebugInfo/DIContext.h"
//
// Symbolizer code should be called from the run-time library of
// dynamic tools, and generally should not call memory allocation
// routines or other system library functions intercepted by those tools.
// Instead, Symbolizer code should use their replacements, defined in
// "compiler-rt/lib/sanitizer_common/sanitizer_libc.h".
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_SYMBOLIZER_H
#define SANITIZER_SYMBOLIZER_H
#include "sanitizer_internal_defs.h"
#include "sanitizer_libc.h"
// WARNING: Do not include system headers here. See details above.
namespace __sanitizer {
struct AddressInfo {
uptr address;
char *module;
uptr module_offset;
char *function;
char *file;
int line;
int column;
AddressInfo() {
internal_memset(this, 0, sizeof(AddressInfo));
}
// Deletes all strings and sets all fields to zero.
void Clear();
};
// Fills at most "max_frames" elements of "frames" with descriptions
// for a given address (in all inlined functions). Returns the number
// of descriptions actually filled.
// This function should NOT be called from two threads simultaneously.
uptr SymbolizeCode(uptr address, AddressInfo *frames, uptr max_frames);
// Debug info routines
struct DWARFSection {
const char *data;
uptr size;
DWARFSection() {
data = 0;
size = 0;
}
};
// Returns true on success.
bool FindDWARFSection(uptr object_file_addr, const char *section_name,
DWARFSection *section);
bool IsFullNameOfDWARFSection(const char *full_name, const char *short_name);
class ModuleDIContext {
public:
ModuleDIContext(const char *module_name, uptr base_address);
void addAddressRange(uptr beg, uptr end);
bool containsAddress(uptr address) const;
void getAddressInfo(AddressInfo *info);
const char *full_name() const { return full_name_; }
private:
void CreateDIContext();
struct AddressRange {
uptr beg;
uptr end;
};
char *full_name_;
char *short_name_;
uptr base_address_;
static const uptr kMaxNumberOfAddressRanges = 8;
AddressRange ranges_[kMaxNumberOfAddressRanges];
uptr n_ranges_;
uptr mapped_addr_;
uptr mapped_size_;
};
// OS-dependent function that gets the linked list of all loaded modules.
uptr GetListOfModules(ModuleDIContext *modules, uptr max_modules);
} // namespace __sanitizer
#endif // SANITIZER_SYMBOLIZER_H
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