/* this is only called when the instrace mode is operand trace (this happens at the instrumentation time) */
static void operand_trace(instr_t * instr, void * drcontext){
int i;
char stringop[MAX_STRING_LENGTH];
int pc = 0;
per_thread_t * data = drmgr_get_tls_field(drcontext, tls_index);
module_data_t * module_data = dr_lookup_module(instr_get_app_pc(instr));
if (module_data != NULL){
pc = instr_get_app_pc(instr) - module_data->start;
}
instr_disassemble_to_buffer(drcontext, instr, stringop, MAX_STRING_LENGTH);
if (client_arg->instrace_mode == OPERAND_TRACE){
dr_fprintf(data->outfile, "%s\n", stringop);
for (i = 0; i < instr_num_dsts(instr); i++){
opnd_disassemble_to_buffer(drcontext, instr_get_dst(instr, i), stringop, MAX_STRING_LENGTH);
if ((instr_get_opcode(instr) == OP_lea) && opnd_is_base_disp(instr_get_dst(instr,i))){
dr_fprintf(data->outfile, "dst-\n");
print_base_disp_for_lea(data->outfile, instr_get_dst(instr, i));
}
else{
dr_fprintf(data->outfile, "dst-%d-%s\n", i, stringop);
}
}
for (i = 0; i < instr_num_srcs(instr); i++){
opnd_disassemble_to_buffer(drcontext, instr_get_src(instr, i), stringop, MAX_STRING_LENGTH);
if ((instr_get_opcode(instr) == OP_lea) && opnd_is_base_disp(instr_get_src(instr, i))){
dr_fprintf(data->outfile, "src-\n");
print_base_disp_for_lea(data->outfile, instr_get_src(instr, i));
}
else{
dr_fprintf(data->outfile, "src-%d-%s\n", i, stringop);
}
}
if (module_data != NULL){
dr_fprintf(data->outfile, "app_pc-%d\n", pc);
}
}
else if (client_arg->instrace_mode == INS_DISASM_TRACE){
if (module_data != NULL){
if (md_get_module_position(instrace_head, module_data->full_path) == -1){
md_add_module(instrace_head, module_data->full_path, MAX_BBS_PER_MODULE);
}
dr_fprintf(data->outfile, "%d,%d,%s\n", md_get_module_position(instrace_head, module_data->full_path), pc, stringop);
}
else{
dr_fprintf(data->outfile, "%d,%d,%s\n",0, 0, stringop);
}
}
dr_free_module_data(module_data);
}
static void print_instr(byte *address, instr_t *instr)
{
char buffer[0x100];
instr_disassemble_to_buffer(0, instr, buffer, 0x100);
Shade::code_log << "0x" << (void *)address << " " << buffer << std::endl;
}
/* this is only called when the instrace mode is disassembly trace (this happens at the analysis time)*/
static void clean_call_disassembly_trace(){
char disassembly[SHORT_STRING_LENGTH];
per_thread_t * data = drmgr_get_tls_field(dr_get_current_drcontext(), tls_index);
instr_trace_t * trace = (instr_trace_t *)data->buf_ptr;
module_data_t * md;
md = dr_lookup_module(instr_get_app_pc(trace->static_info_instr));
instr_disassemble_to_buffer(dr_get_current_drcontext(), trace->static_info_instr, disassembly, SHORT_STRING_LENGTH);
dr_fprintf(data->outfile, "%s ", disassembly);
if (md != NULL){
dr_fprintf(data->outfile, "%x", instr_get_app_pc(trace->static_info_instr) - md->start);
dr_free_module_data(md);
}
dr_fprintf(data->outfile, "\n");
}
/* prints the trace and empties the instruction buffer */
static void ins_trace(void *drcontext)
{
per_thread_t *data;
int num_refs;
instr_trace_t *instr_trace;
instr_t * instr;
int i;
int j;
#ifdef READABLE_TRACE
char disassembly[SHORT_STRING_LENGTH];
#else
output_t * output;
#endif
data = drmgr_get_tls_field(drcontext, tls_index);
instr_trace = (instr_trace_t *)data->buf_base;
num_refs = (int)((instr_trace_t *)data->buf_ptr - instr_trace);
uint mem_type;
uint64 mem_addr;
opnd_t opnd;
#ifdef READABLE_TRACE
//TODO
for (i = 0; i < num_refs; i++) {
instr = instr_trace->static_info_instr;
instr_disassemble_to_buffer(drcontext,instr,disassembly,SHORT_STRING_LENGTH);
dr_fprintf(data->outfile,"%u",instr_get_opcode(instr));
dr_fprintf(data->outfile,",%u",calculate_operands(instr,DST_TYPE));
for(j=0; j<instr_num_dsts(instr); j++){
get_address(instr_trace, j, DST_TYPE, &mem_type, &mem_addr);
output_populator_printer(drcontext,instr_get_dst(instr,j),instr,mem_addr,mem_type,NULL);
}
dr_fprintf(data->outfile,",%u",calculate_operands(instr,SRC_TYPE));
for(j=0; j<instr_num_srcs(instr); j++){
get_address(instr_trace, j, SRC_TYPE, &mem_type, &mem_addr);
opnd = instr_get_src(instr, j);
if (instr_get_opcode(instr) == OP_lea && opnd_is_base_disp(opnd)){
/* four operands here for [base + index * scale + disp] */
output_populator_printer(drcontext, opnd_create_reg(opnd_get_base(opnd)), instr, mem_addr, mem_type, NULL);
output_populator_printer(drcontext, opnd_create_reg(opnd_get_index(opnd)), instr, mem_addr, mem_type, NULL);
output_populator_printer(drcontext, opnd_create_immed_int(opnd_get_scale(opnd),OPSZ_PTR), instr, mem_addr, mem_type, NULL);
output_populator_printer(drcontext, opnd_create_immed_int(opnd_get_disp(opnd), OPSZ_PTR), instr, mem_addr, mem_type, NULL);
}
else{
output_populator_printer(drcontext, opnd, instr, mem_addr, mem_type, NULL);
}
}
dr_fprintf(data->outfile,",%u,%u\n",instr_trace->eflags,instr_trace->pc);
++instr_trace;
}
#else
/* we need to fill up the output array here */
for(i = 0; i< num_refs; i++){
instr = instr_trace->static_info_instr;
output = &data->output_array[i];
//opcode
output->opcode = instr_get_opcode(instr);
output->num_dsts = 0;
output->num_srcs = 0;
for(j=0; j<instr_num_dsts(instr); j++){
output_populator_printer(drcontext,instr_get_dst(instr,j),instr,get_address(instr_trace,j,DST_TYPE),&output->dsts[output->num_dsts]);
output->num_dsts++;
}
for(j=0; j<instr_num_srcs(instr); j++){
output_populator_printer(drcontext,instr_get_src(instr,j),instr,get_address(instr_trace,j,SRC_TYPE),&output->srcs[output->num_srcs]);
output->num_srcs++;
}
output->eflags = instr_trace->eflags;
++instr_trace;
}
dr_write_file(data->outfile,data->output_array,num_refs * sizeof(output_t));
#endif
memset(data->buf_base, 0, INSTR_BUF_SIZE);
data->num_refs += num_refs;
data->buf_ptr = data->buf_base;
}
static dr_emit_flags_t
event_basic_block(void *drcontext, void *tag, instrlist_t *bb,
bool for_trace, bool translating)
{
int i;
const int MAX_INSTR_LEN = 64;
char instr_name[MAX_INSTR_LEN];
instr_t *instr, *first = instrlist_first(bb);
uint flags;
uint cur_flop_count = 0;
uint tracked_instr_count[tracked_instrs_len];
for( i = 0; i < tracked_instrs_len; i++ ) tracked_instr_count[i] = 0;
#ifdef VERBOSE
dr_printf("in dynamorio_basic_block(tag="PFX")\n", tag);
# ifdef VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
/* we use fp ops so we have to save fp state */
byte fp_raw[512 + 16];
byte *fp_align = (byte *) ( (((ptr_uint_t)fp_raw) + 16) & ((ptr_uint_t)-16) );
if (translating) {
return DR_EMIT_DEFAULT;
}
proc_save_fpstate(fp_align);
int my_readfrom[DR_REG_LAST_VALID_ENUM+MY_NUM_EFLAGS+1];
int my_writtento[DR_REG_LAST_VALID_ENUM+MY_NUM_EFLAGS+1];
for (i = 0; i < DR_REG_LAST_VALID_ENUM+MY_NUM_EFLAGS+1; i++) {
my_readfrom[i] = 0;
my_writtento[i] = 0;
}
t_glob_reg_state glob_reg_state = {0,0,0,0,0,0,my_readfrom,my_writtento};
int my_cur_size = 0;
for (instr = instrlist_first(bb); instr != NULL; instr = instr_get_next(instr)) {
my_cur_size++;
/* ILP Calculations */
glob_reg_state.raw_setnr = 1;
glob_reg_state.war_setnr = 1;
glob_reg_state.waw_setnr = 1;
glob_reg_state.else_setnr = 1;
glob_reg_state.final_setnr = 1;
calc_set_num(instr, &glob_reg_state);
/* Count flop instr */
if( instr_is_floating( instr ) ) {
cur_flop_count += 1;
}
/* Count mul instructions */
instr_disassemble_to_buffer( drcontext, instr, instr_name, MAX_INSTR_LEN );
for( i = 0; i < tracked_instrs_len; i++ ) {
if( strncmp( instr_name, tracked_instrs[i], strlen(tracked_instrs[i])) == 0) {
tracked_instr_count[i] += 1;
}
}
}
//now we can calculate the ILP.
float ilp = ((float)my_cur_size) / ((float)(glob_reg_state.num_sets != 0 ?
glob_reg_state.num_sets : 1));
dr_mutex_lock(stats_mutex);
// Due to lack of memory, we only store the ILPs for the latest MY_MAX_BB
// basic blocks. This enables us to run e.g. firefox.
int my_cur_num = my_bbcount % MY_MAX_BB;
my_bbcount++;
if(my_cur_num == 0 && my_bbcount > 1) {
dr_printf("Overflow at %d\n", my_bbcount);
}
my_bbexecs[my_cur_num] = 0; //initialize
my_bbsizes[my_cur_num] = my_cur_size;
bb_flop_count[my_cur_num] = cur_flop_count;
for( i = 0; i < tracked_instrs_len; i++ ) {
bb_instr_count[my_cur_num*tracked_instrs_len+i] = tracked_instr_count[i];
}
my_bbilp[my_cur_num] = ilp;
dr_mutex_unlock(stats_mutex);
#ifdef USE_CLEAN_CALL
dr_insert_clean_call(drcontext, bb, instrlist_first(bb), clean_call, false, 1,
OPND_CREATE_INT32(my_cur_num));
#else
#ifdef INSERT_AT_END
instr = NULL;
#else
// Find place to insert inc instruction
for (instr = first; instr != NULL; instr = instr_get_next(instr)) {
flags = instr_get_arith_flags(instr);
if (TESTALL(EFLAGS_WRITE_6, flags) && !TESTANY(EFLAGS_READ_6, flags))
break;
}
#endif
if (instr == NULL) { // no suitable place found, save regs
dr_save_reg(drcontext, bb, first, DR_REG_XAX, SPILL_SLOT_1);
dr_save_arith_flags_to_xax(drcontext, bb, first);
}
// Increment my_bbexecs[my_current_bb] using the lock prefix
instrlist_meta_preinsert
(bb, (instr == NULL) ? first : instr,
LOCK(INSTR_CREATE_inc(drcontext, OPND_CREATE_ABSMEM
((byte *)&(my_bbexecs[my_cur_num]), OPSZ_4))));
if (instr == NULL) { // no suitable place found earlier, restore regs
dr_restore_arith_flags_from_xax(drcontext, bb, first);
dr_restore_reg(drcontext, bb, first, DR_REG_XAX, SPILL_SLOT_1);
}
#endif
proc_restore_fpstate(fp_align);
#if defined(VERBOSE) && defined(VERBOSE_VERBOSE)
dr_printf("Finished instrumenting dynamorio_basic_block(tag="PFX")\n", tag);
instrlist_disassemble(drcontext, tag, bb, STDOUT);
#endif
return DR_EMIT_DEFAULT;
}
