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/*! @file ObjdumpProcessor.h
* @brief ObjdumpProcessor Specification
*
* This file contains the specification of the ObjdumpProcessor class.
*/
#ifndef __OBJDUMP_PROCESSOR_H__
#define __OBJDUMP_PROCESSOR_H__
#include <list>
#include <string>
#include "ExecutableInfo.h"
#include "TargetBase.h"
#include "rld-process.h"
namespace Coverage {
/*! @class ObjdumpProcessor
*
* This class implements the functionality which reads the output of
* an objdump. Various information is extracted from the objdump line
* to support analysis and report writing. Analysis of the objdump line
* also allows for identification of "nops". For the purpose of coverage
* analysis, nops in the executable may be ignored. Compilers often
* produce nops to align functions on particular alignment boundaries
* and the nop between functions can not possibly be executed.
*/
class ObjdumpProcessor {
public:
/*!
* This type defines the elements of an objdump line.
*/
typedef struct {
/*!
* This member variable contains the actual line from the object dump.
*/
std::string line;
/*!
* This member variable contains the address from the object dump line.
*/
uint32_t address;
/*!
* This member variable contains an indication of whether the line
* is an instruction.
*/
bool isInstruction;
/*!
* This member variable contains an indication of whether the line
* is a nop instruction.
*/
bool isNop;
/*!
* This member variable contains the size of the nop instruction.
*/
int nopSize;
/*!
* This member variable contains an indication of whether the line
* is a branch instruction.
*/
bool isBranch;
} objdumpLine_t;
/*!
* This object defines a list of object dump lines
* for a file.
*/
typedef std::list<objdumpLine_t> objdumpLines_t;
/*!
* This object defines a list of instruction addresses
* that will be extracted from the objdump file.
*/
typedef std::list<uint32_t> objdumpFile_t;
/*!
* This method constructs an ObjdumpProcessor instance.
*/
ObjdumpProcessor();
/*!
* This method destructs an ObjdumpProcessor instance.
*/
virtual ~ObjdumpProcessor();
uint32_t determineLoadAddress(
ExecutableInfo* theExecutable
);
/*!
* This method fills a tempfile with the .text section of objdump
* for the given file name.
*/
void getFile( std::string fileName,
rld::process::tempfile& dmp,
rld::process::tempfile& err );
/*!
* This method fills the objdumpList list with all the
* instruction addresses in the object dump file.
*/
void loadAddressTable (
ExecutableInfo* const executableInformation,
rld::process::tempfile& dmp,
rld::process::tempfile& err
);
/*!
* This method generates and processes an object dump for
* the specified executable.
*/
void load(
ExecutableInfo* const executableInformation,
rld::process::tempfile& dmp,
rld::process::tempfile& err
);
/*!
* This method returns the next address in the objdumpList.
*/
uint32_t getAddressAfter( uint32_t address );
/*!
* This method returns true if the instruction is
* an instruction that results in a code branch, otherwise
* it returns false.
*/
bool IsBranch( const char *instruction );
/*!
* This method returns true if the instruction from
* the given line in the objdmp file is a branch instruction,
* otherwise it returns false.
*/
bool isBranchLine(
const char* const line
);
private:
/*!
* This variable consists of a list of all instruction addresses
* extracted from the obj dump file.
*/
objdumpFile_t objdumpList;
/*!
* This method determines whether the specified line is a
* nop instruction.
*
* @param[in] line contains the object dump line to check
* @param[out] size is set to the size in bytes of the nop
*
* @return Returns TRUE if the instruction is a nop, FALSE otherwise.
*/
bool isNop(
const char* const line,
int& size
);
};
}
#endif
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