static dr_emit_flags_t
event_basic_block(void *drcontext, void *tag, instrlist_t *bb,
bool for_trace, bool translating)
{
instr_t *instr;
uint num_instrs;
#ifdef VERBOSE
dr_printf("in dynamorio_basic_block(tag="PFX")\n", tag);
# ifdef VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
for (instr = instrlist_first(bb), num_instrs = 0;
instr != NULL;
instr = instr_get_next(instr)) {
num_instrs++;
}
dr_insert_clean_call(drcontext, bb, instrlist_first(bb),
(void *)inscount, false /* save fpstate */, 1,
OPND_CREATE_INT32(num_instrs));
#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;
}
/* replaces all inc with add 1, dec with sub 1
* if cannot replace (eflags constraints), leaves original instruction alone
*/
static dr_emit_flags_t
event_trace(void *drcontext, void *tag, instrlist_t *trace, bool translating)
{
instr_t *instr, *next_instr;
int opcode;
if (!enable)
return DR_EMIT_DEFAULT;
#ifdef VERBOSE
dr_printf("in dynamorio_trace(tag="PFX")\n", tag);
instrlist_disassemble(drcontext, tag, trace, STDOUT);
#endif
for (instr = instrlist_first(trace); instr != NULL; instr = next_instr) {
/* grab next now so we don't go over instructions we insert */
next_instr = instr_get_next(instr);
opcode = instr_get_opcode(instr);
if (opcode == OP_inc || opcode == OP_dec) {
if (!translating)
ATOMIC_INC(num_examined);
if (replace_inc_with_add(drcontext, instr, trace)) {
if (!translating)
ATOMIC_INC(num_converted);
}
}
}
#ifdef VERBOSE
dr_printf("after dynamorio_trace(tag="PFX"):\n", tag);
instrlist_disassemble(drcontext, tag, trace, STDOUT);
#endif
return DR_EMIT_DEFAULT;
}
static dr_emit_flags_t
event_basic_block(void *drcontext, void *tag, instrlist_t *bb,
bool for_trace, bool translating)
{
instr_t *instr, *mbr = NULL;
uint num_instrs;
bool bb_in_app;
#ifdef VERBOSE
dr_printf("in dynamorio_basic_block(tag="PFX")\n", tag);
# ifdef VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
for (instr = instrlist_first(bb), num_instrs = 0;
instr != NULL;
instr = instr_get_next(instr)) {
/* only care about app instr */
if (!instr_ok_to_mangle(instr))
continue;
num_instrs++;
/* Assuming most of the transfers between app and lib are paired, we
* instrument indirect branches but not returns for better performance.
*/
if (instr_is_mbr(instr) && !instr_is_return(instr))
mbr = instr;
}
if (dr_fragment_app_pc(tag) >= app_base &&
dr_fragment_app_pc(tag) < app_end)
bb_in_app = true;
else
bb_in_app = false;
dr_insert_clean_call(drcontext, bb, instrlist_first(bb),
(void *)(bb_in_app ? app_update : lib_update),
false /* save fpstate */, 1,
OPND_CREATE_INT32(num_instrs));
if (mbr != NULL) {
dr_insert_mbr_instrumentation(drcontext, bb, mbr,
(void *)(bb_in_app ? app_mbr : lib_mbr),
SPILL_SLOT_1);
}
#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;
}
static dr_emit_flags_t
event_basic_block(void *drcontext, void *tag, instrlist_t *bb,
bool for_trace, bool translating)
{
instr_t *instr, *next_instr;
#ifdef VERBOSE
dr_printf("in dr_basic_block(tag="PFX")\n", tag);
# if VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
for (instr = instrlist_first_app(bb); instr != NULL; instr = next_instr) {
next_instr = instr_get_next_app(instr);
if (!instr_opcode_valid(instr))
continue;
/* instrument calls and returns -- ignore far calls/rets */
if (instr_is_call_direct(instr)) {
dr_insert_call_instrumentation(drcontext, bb, instr, (app_pc)at_call);
} else if (instr_is_call_indirect(instr)) {
dr_insert_mbr_instrumentation(drcontext, bb, instr, (app_pc)at_call_ind,
SPILL_SLOT_1);
} else if (instr_is_return(instr)) {
dr_insert_mbr_instrumentation(drcontext, bb, instr, (app_pc)at_return,
SPILL_SLOT_1);
}
}
return DR_EMIT_DEFAULT;
}
static dr_emit_flags_t
event_app_instruction(void *drcontext, void *tag, instrlist_t *bb, instr_t *inst,
bool for_trace, bool translating, void *user_data)
{
#ifdef SHOW_RESULTS
bool aflags_dead;
#endif
if (!drmgr_is_first_instr(drcontext, inst))
return DR_EMIT_DEFAULT;
#ifdef VERBOSE
dr_printf("in dynamorio_basic_block(tag="PFX")\n", tag);
# ifdef VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
#ifdef SHOW_RESULTS
if (drreg_are_aflags_dead(drcontext, inst, &aflags_dead) == DRREG_SUCCESS &&
!aflags_dead)
bbs_eflags_saved++;
else
bbs_no_eflags_saved++;
#endif
/* We demonstrate how to use drreg for aflags save/restore here.
* We could use drx_insert_counter_update instead of drreg.
* Xref sample opcodes.c as an example of using drx_insert_counter_update.
*/
if (drreg_reserve_aflags(drcontext, bb, inst) != DRREG_SUCCESS)
DR_ASSERT(false && "fail to reserve aflags!");
/* racy update on the counter for better performance */
instrlist_meta_preinsert
(bb, inst,
INSTR_CREATE_inc(drcontext, OPND_CREATE_ABSMEM
((byte *)&global_count, OPSZ_4)));
if (drreg_unreserve_aflags(drcontext, bb, inst) != DRREG_SUCCESS)
DR_ASSERT(false && "fail to unreserve aflags!");
#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;
}
static dr_emit_flags_t
event_basic_block(void *drcontext, void *tag, instrlist_t *bb,
bool for_trace, bool translating)
{
instr_t *instr, *next_instr;
#ifdef VERBOSE
dr_printf("in dynamorio_basic_block(tag="PFX")\n", tag);
# ifdef VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
for (instr = instrlist_first(bb); instr != NULL; instr = next_instr) {
/* grab next now so we don't go over instructions we insert */
next_instr = instr_get_next(instr);
/* instrument calls and returns -- ignore far calls/rets */
if (instr_is_call_direct(instr)) {
insert_counter_update(drcontext, bb, instr,
offsetof(per_thread_t, num_direct_calls));
} else if (instr_is_call_indirect(instr)) {
insert_counter_update(drcontext, bb, instr,
offsetof(per_thread_t, num_indirect_calls));
} else if (instr_is_return(instr)) {
insert_counter_update(drcontext, bb, instr,
offsetof(per_thread_t, num_returns));
}
}
#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;
}
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;
}
/** Adds instrumentation that records fragment execution. */
struct instr_info_t instrument_frag(void* ctx,
instrlist_t* frag,
frag_id_t id) {
const size_t offsetof_current = offsetof(struct trace_buffer_t, current);
ptr_int_t frag_id = id; // sign-extended for OPND_CREATE_INT32
#ifdef TRACE_DEBUG
app_pc frag_pc;
#endif
app_pc xl8_pc;
instr_t* where;
instr_t* before;
struct instr_info_t instr_info;
instr_t* store;
instr_t* first;
#ifdef TRACE_DEBUG
dr_fprintf(STDERR, "debug: instrument_frag(0x%" PRIxPTR ")\n", frag_id);
frag_pc = instr_get_app_pc(instrlist_first(frag));
instrlist_disassemble(ctx, frag_pc, frag, STDERR);
#endif
where = configure_instr(&instr_info, frag);
xl8_pc = instr_get_app_pc(where);
before = instr_get_prev(where);
#define INSERT(instr) prexl8(frag, where, (instr), xl8_pc)
// Add instrumentation.
// save tls_reg
if(instr_info.restore_tls_reg) {
dr_save_reg(ctx, frag, where, instr_info.tls_reg, SPILL_SLOT_2);
}
// save current_reg
if(instr_info.restore_current_reg) {
dr_save_reg(ctx, frag, where, instr_info.current_reg, SPILL_SLOT_3);
}
// tls_reg = tb
dr_insert_read_tls_field(ctx, frag, where, instr_info.tls_reg);
// current_reg = tb->current
INSERT(
INSTR_CREATE_mov_ld(
ctx,
opnd_create_reg(instr_info.current_reg),
OPND_CREATE_MEMPTR(instr_info.tls_reg, offsetof_current)));
// *current_reg = bb_id
store = INSERT(
INSTR_CREATE_mov_st(
ctx,
OPND_CREATE_MEMPTR(instr_info.current_reg, 0),
OPND_CREATE_INT32(frag_id)));
// current_reg += sizeof(bb_id)
INSERT(
INSTR_CREATE_lea(
ctx,
opnd_create_reg(instr_info.current_reg),
OPND_CREATE_MEM_lea(instr_info.current_reg,
DR_REG_NULL,
0,
sizeof(frag_id_t))));
// tb->current = current_reg
INSERT(
INSTR_CREATE_mov_st(
ctx,
OPND_CREATE_MEMPTR(instr_info.tls_reg, offsetof_current),
opnd_create_reg(instr_info.current_reg)));
// restore current_reg
if(instr_info.restore_current_reg) {
dr_restore_reg(ctx, frag, where, instr_info.current_reg, SPILL_SLOT_3);
}
// restore tls_reg
if(instr_info.restore_tls_reg) {
dr_restore_reg(ctx, frag, where, instr_info.tls_reg, SPILL_SLOT_2);
}
#undef INSERT
// Compute instrumentation instructions offsets.
if(before) {
first = instr_get_next(before);
} else {
first = instrlist_first(frag);
}
instr_info.first_offset = get_offset(ctx,
instrlist_first(frag),
first);
instr_info.store_offset = get_offset(ctx,
instrlist_first(frag),
store);
#ifdef TRACE_DUMP_BB
instrlist_disassemble(ctx, frag_pc, frag, STDERR);
#endif
#ifdef TRACE_DEBUG
dr_fprintf(STDERR,
"debug: instrument_frag() done,"
" first_offset=0x%" PRIx32
" store_offset=0x%" PRIx32
"\n",
instr_info.first_offset,
instr_info.store_offset);
#endif
return instr_info;
}
static dr_emit_flags_t
event_bb_analysis(void *drcontext, void *tag, instrlist_t *bb, bool for_trace,
bool translating, void **user_data)
{
instr_t *instr;
uint num_instrs;
#ifdef VERBOSE
dr_printf("in dynamorio_basic_block(tag=" PFX ")\n", tag);
# ifdef VERBOSE_VERBOSE
instrlist_disassemble(drcontext, tag, bb, STDOUT);
# endif
#endif
/* Only count in app BBs */
if (only_from_app.get_value()) {
module_data_t *mod = dr_lookup_module(dr_fragment_app_pc(tag));
if (mod != NULL) {
bool from_exe = (mod->start == exe_start);
dr_free_module_data(mod);
if (!from_exe) {
*user_data = NULL;
return DR_EMIT_DEFAULT;
}
}
}
/* Count instructions. If an emulation client is running with this client,
* we want to count all the original native instructions and the emulated
* instruction but NOT the introduced native instructions used for emulation.
*/
bool is_emulation = false;
for (instr = instrlist_first(bb), num_instrs = 0; instr != NULL;
instr = instr_get_next(instr)) {
if (drmgr_is_emulation_start(instr)) {
/* Each emulated instruction is replaced by a series of native
* instructions delimited by labels indicating when the emulation
* sequence begins and ends. It is the responsibility of the
* emulation client to place the start/stop labels correctly.
*/
num_instrs++;
is_emulation = true;
/* Data about the emulated instruction can be extracted from the
* start label using the accessor function:
* drmgr_get_emulated_instr_data()
*/
continue;
}
if (drmgr_is_emulation_end(instr)) {
is_emulation = false;
continue;
}
if (is_emulation)
continue;
if (!instr_is_app(instr))
continue;
num_instrs++;
}
*user_data = (void *)(ptr_uint_t)num_instrs;
#if defined(VERBOSE) && defined(VERBOSE_VERBOSE)
dr_printf("Finished counting for dynamorio_basic_block(tag=" PFX ")\n", tag);
instrlist_disassemble(drcontext, tag, bb, STDOUT);
#endif
return DR_EMIT_DEFAULT;
}
