forked from OSchip/llvm-project
72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
//===-- sanitizer_procmaps.h ------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is shared between AddressSanitizer and ThreadSanitizer.
|
|
//
|
|
// Information about the process mappings.
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef SANITIZER_PROCMAPS_H
|
|
#define SANITIZER_PROCMAPS_H
|
|
|
|
#include "sanitizer_internal_defs.h"
|
|
|
|
namespace __sanitizer {
|
|
|
|
class ProcessMaps {
|
|
public:
|
|
ProcessMaps();
|
|
bool Next(uptr *start, uptr *end, uptr *offset,
|
|
char filename[], uptr filename_size);
|
|
void Reset();
|
|
// Gets the object file name and the offset in that object for a given
|
|
// address 'addr'. Returns true on success.
|
|
bool GetObjectNameAndOffset(uptr addr, uptr *offset,
|
|
char filename[], uptr filename_size);
|
|
~ProcessMaps();
|
|
private:
|
|
// Default implementation of GetObjectNameAndOffset.
|
|
// Quite slow, because it iterates through the whole process map for each
|
|
// lookup.
|
|
bool IterateForObjectNameAndOffset(uptr addr, uptr *offset,
|
|
char filename[], uptr filename_size) {
|
|
Reset();
|
|
uptr start, end, file_offset;
|
|
for (int i = 0; Next(&start, &end, &file_offset, filename, filename_size);
|
|
i++) {
|
|
if (addr >= start && addr < end) {
|
|
// Don't subtract 'start' for the first entry. Don't ask me why.
|
|
*offset = (addr - (i ? start : 0)) + file_offset;
|
|
return true;
|
|
}
|
|
}
|
|
if (filename_size)
|
|
filename[0] = '\0';
|
|
return false;
|
|
}
|
|
|
|
#if defined __linux__
|
|
char *proc_self_maps_buff_;
|
|
uptr proc_self_maps_buff_mmaped_size_;
|
|
uptr proc_self_maps_buff_len_;
|
|
char *current_;
|
|
#elif defined __APPLE__
|
|
template<u32 kLCSegment, typename SegmentCommand>
|
|
bool NextSegmentLoad(uptr *start, uptr *end, uptr *offset,
|
|
char filename[], uptr filename_size);
|
|
int current_image_;
|
|
u32 current_magic_;
|
|
int current_load_cmd_count_;
|
|
char *current_load_cmd_addr_;
|
|
#endif
|
|
};
|
|
|
|
} // namespace __sanitizer
|
|
|
|
#endif // SANITIZER_PROCMAPS_H
|