sdebug/xdebug_code_coverage.c at sdebug_2_7 · boocent/sdebug · GitHub

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+----------------------------------------------------------------------+

| Xdebug |

+----------------------------------------------------------------------+

| This source file is subject to version 1.01 of the Xdebug license, |

| that is bundled with this package in the file LICENSE, and is |

| available at through the world-wide-web at |

| https://xdebug.org/license.php |

| If you did not receive a copy of the Xdebug license and are unable |

| to obtain it through the world-wide-web, please send a note to |

| derick@xdebug.org so we can mail you a copy immediately. |

+----------------------------------------------------------------------+

| Authors: Derick Rethans <derick@xdebug.org> |

+----------------------------------------------------------------------+

#include "php_xdebug.h"

#include "xdebug_private.h"

#include "xdebug_filter.h"

#include "xdebug_set.h"

#include "xdebug_stack.h"

#include "xdebug_var.h"

#include "xdebug_branch_info.h"

#include "xdebug_code_coverage.h"

#include "xdebug_compat.h"

#include "xdebug_tracing.h"

extern ZEND_DECLARE_MODULE_GLOBALS(xdebug);

void xdebug_coverage_line_dtor(void *data)

{

xdebug_coverage_line *line = (xdebug_coverage_line *) data;

xdfree(line);

}

xdebug_coverage_file *xdebug_coverage_file_ctor(char *filename)

{

xdebug_coverage_file *file;

file = xdmalloc(sizeof(xdebug_coverage_file));

file->name = xdstrdup(filename);

file->lines = xdebug_hash_alloc(128, xdebug_coverage_line_dtor);

file->functions = xdebug_hash_alloc(128, xdebug_coverage_function_dtor);

file->has_branch_info = 0;

return file;

}

void xdebug_coverage_file_dtor(void *data)

{

xdebug_coverage_file *file = (xdebug_coverage_file *) data;

xdebug_hash_destroy(file->lines);

xdebug_hash_destroy(file->functions);

xdfree(file->name);

xdfree(file);

}

xdebug_coverage_function *xdebug_coverage_function_ctor(char *function_name)

{

xdebug_coverage_function *function;

function = xdmalloc(sizeof(xdebug_coverage_function));

function->name = xdstrdup(function_name);

function->branch_info = NULL;

return function;

}

void xdebug_coverage_function_dtor(void *data)

{

xdebug_coverage_function *function = (xdebug_coverage_function *) data;

if (function->branch_info) {

xdebug_branch_info_free(function->branch_info);

}

xdfree(function->name);

xdfree(function);

}

void xdebug_print_opcode_info(char type, zend_execute_data *execute_data, const zend_op *cur_opcode TSRMLS_DC)

{

zend_op_array *op_array = &execute_data->func->op_array;

char *file = (char*) STR_NAME_VAL(op_array->filename);

xdebug_func func_info;

char *function_name;

long opnr = execute_data->opline - execute_data->func->op_array.opcodes;

xdebug_build_fname_from_oparray(&func_info, op_array TSRMLS_CC);

function_name = xdebug_func_format(&func_info TSRMLS_CC);

if (func_info.class) {

xdfree(func_info.class);

}

if (func_info.function) {

xdfree(func_info.function);

}

xdebug_branch_info_mark_reached(file, function_name, op_array, opnr TSRMLS_CC);

xdfree(function_name);

}

int xdebug_check_branch_entry_handler(zend_execute_data *execute_data)

{

zend_op_array *op_array = &execute_data->func->op_array;

if (!op_array->reserved[XG(code_coverage_filter_offset)] && XG(do_code_coverage)) {

const zend_op *cur_opcode;

cur_opcode = execute_data->opline;

xdebug_print_opcode_info('G', execute_data, cur_opcode TSRMLS_CC);

}

return ZEND_USER_OPCODE_DISPATCH;

}

#define XDEBUG_OPCODE_OVERRIDE(f) \

int xdebug_##f##_handler(zend_execute_data *execute_data) \

{ \

return xdebug_common_override_handler(execute_data); \

}

int xdebug_common_override_handler(zend_execute_data *execute_data)

{

zend_op_array *op_array = &execute_data->func->op_array;

if (!op_array->reserved[XG(code_coverage_filter_offset)] && XG(do_code_coverage)) {

const zend_op *cur_opcode;

int lineno;

char *file;

cur_opcode = execute_data->opline;

lineno = cur_opcode->lineno;

file = (char*) STR_NAME_VAL(op_array->filename);

xdebug_print_opcode_info('C', execute_data, cur_opcode TSRMLS_CC);

xdebug_count_line(file, lineno, 0, 0 TSRMLS_CC);

}

return ZEND_USER_OPCODE_DISPATCH;

}

static int xdebug_is_static_call(const zend_op *cur_opcode, const zend_op *prev_opcode, const zend_op **found_opcode)

{

const zend_op *opcode_ptr;

opcode_ptr = cur_opcode;

# if PHP_VERSION_ID >= 70100

while (!(opcode_ptr->opcode == ZEND_EXT_STMT) && !((opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_W) || (opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_RW))) {

opcode_ptr = opcode_ptr - 1;

}

if ((opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_W) || (opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_RW)) {

# else

while (!(opcode_ptr->opcode == ZEND_EXT_STMT) && !((opcode_ptr->opcode == ZEND_FETCH_W) || (opcode_ptr->opcode == ZEND_FETCH_RW))) {

opcode_ptr = opcode_ptr - 1;

}

if (((opcode_ptr->opcode == ZEND_FETCH_W) || (opcode_ptr->opcode == ZEND_FETCH_RW)) && opcode_ptr->extended_value == ZEND_FETCH_STATIC_MEMBER) {

# endif

*found_opcode = opcode_ptr;

return 1;

}

return 0;

}

static const zend_op *xdebug_find_referenced_opline(zend_execute_data *execute_data, const zend_op *cur_opcode, int op1_or_op2)

{

int op_type = (op1_or_op2 == 1) ? cur_opcode->op1_type : cur_opcode->op2_type;

if (op_type == IS_VAR) {

size_t variable_number = (op1_or_op2 == 1) ? cur_opcode->op1.var : cur_opcode->op2.var;

const zend_op *scan_opcode = cur_opcode;

int found = 0;

/* Scroll up until we find a RES of IS_VAR with the right value */

do {

scan_opcode--;

if (scan_opcode->result_type == IS_VAR && scan_opcode->result.var == variable_number) {

found = 1;

}

} while (!found);

return scan_opcode;

}

return NULL;

}

static char *xdebug_find_var_name(zend_execute_data *execute_data, const zend_op *cur_opcode, const zend_op *lower_bound TSRMLS_DC)

{

const zend_op *next_opcode, *prev_opcode = NULL, *opcode_ptr;

zval *dimval;

int is_var;

zend_op_array *op_array = &execute_data->func->op_array;

xdebug_str name = XDEBUG_STR_INITIALIZER;

int gohungfound = 0, is_static = 0;

xdebug_str *zval_value = NULL;

xdebug_var_export_options *options;

const zend_op *static_opcode_ptr = NULL;

next_opcode = cur_opcode + 1;

prev_opcode = cur_opcode - 1;

if (cur_opcode->opcode == ZEND_QM_ASSIGN) {

#if PHP_VERSION_ID >= 70000

xdebug_str_add(&name, xdebug_sprintf("$%s", zend_get_compiled_variable_name(op_array, cur_opcode->result.var)->val), 1);

#else

xdebug_str_add(&name, xdebug_sprintf("$%s", zend_get_compiled_variable_name(op_array, cur_opcode->result.var, &cv_len)), 1);

#endif

}

is_static = xdebug_is_static_call(cur_opcode, prev_opcode, &static_opcode_ptr);

options = xdebug_var_export_options_from_ini(TSRMLS_C);

options->no_decoration = 1;

if (cur_opcode->op1_type == IS_CV) {

if (!lower_bound) {

xdebug_str_add(&name, xdebug_sprintf("$%s", zend_get_compiled_variable_name(op_array, cur_opcode->op1.var)->val), 1);

}

} else if (cur_opcode->op1_type == IS_VAR && cur_opcode->opcode == ZEND_ASSIGN && (prev_opcode->opcode == ZEND_FETCH_W || prev_opcode->opcode == ZEND_FETCH_RW)) {

if (is_static) {

xdebug_str_add(&name, xdebug_sprintf("self::"), 1);

} else {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, prev_opcode, prev_opcode->op1_type, &prev_opcode->op1, &is_var), 0, options);

xdebug_str_addc(&name, '$');

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

}

} else if (is_static) { /* todo : see if you can change this and the previous cases around */

xdebug_str_add(&name, xdebug_sprintf("self::"), 1 );

}

if ((cur_opcode->opcode >= ZEND_ASSIGN_ADD && cur_opcode->opcode <= ZEND_ASSIGN_BW_XOR)

|| cur_opcode->opcode == ZEND_ASSIGN_POW

) {

if (cur_opcode->extended_value == ZEND_ASSIGN_OBJ) {

zval_value = xdebug_get_zval_value(xdebug_get_zval(execute_data, cur_opcode->op2_type, &cur_opcode->op2, &is_var), 0, options);

if (cur_opcode->op1_type == IS_UNUSED) {

xdebug_str_addl(&name, "$this->", 7, 0);

} else {

xdebug_str_addl(&name, "->", 2, 0);

}

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

} else if (cur_opcode->extended_value == ZEND_ASSIGN_DIM) {

zval_value = xdebug_get_zval_value(xdebug_get_zval(execute_data, cur_opcode->op2_type, &cur_opcode->op2, &is_var), 0, NULL);

xdebug_str_addc(&name, '[');

xdebug_str_add_str(&name, zval_value);

xdebug_str_addc(&name, ']');

xdebug_str_free(zval_value);

}

if (cur_opcode->opcode >= ZEND_PRE_INC_OBJ && cur_opcode->opcode <= ZEND_POST_DEC_OBJ) {

zval_value = xdebug_get_zval_value(xdebug_get_zval(execute_data, cur_opcode->op2_type, &cur_opcode->op2, &is_var), 0, options);

xdebug_str_addl(&name, "$this->", 7, 0);

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

}

/* Scroll back to start of FETCHES */

/* FIXME: See whether we can do this unroll looping only once - in is_static() */

gohungfound = 0;

if (!is_static) {

if (cur_opcode == lower_bound) {

gohungfound = 1;

}

opcode_ptr = prev_opcode;

while ((opcode_ptr >= lower_bound) && (opcode_ptr->opcode == ZEND_FETCH_DIM_W || opcode_ptr->opcode == ZEND_FETCH_OBJ_W || opcode_ptr->opcode == ZEND_FETCH_W || opcode_ptr->opcode == ZEND_FETCH_RW)) {

opcode_ptr = opcode_ptr - 1;

gohungfound = 1;

}

opcode_ptr = opcode_ptr + 1;

} else { /* if we have a static method, we should already have found the first fetch */

opcode_ptr = static_opcode_ptr;

gohungfound = 1;

}

if (gohungfound) {

int cv_found = 0;

{

if (opcode_ptr->op1_type == IS_UNUSED && opcode_ptr->opcode == ZEND_FETCH_OBJ_W) {

xdebug_str_add(&name, "$this", 0);

}

if (opcode_ptr->op1_type == IS_CV) {

xdebug_str_add(&name, xdebug_sprintf("$%s", zend_get_compiled_variable_name(op_array, opcode_ptr->op1.var)->val), 1);

}

#if PHP_VERSION_ID >= 70100

if (opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_W || opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_R || opcode_ptr->opcode == ZEND_FETCH_STATIC_PROP_RW) {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, opcode_ptr, opcode_ptr->op1_type, &opcode_ptr->op1, &is_var), 0, options);

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

}

#endif

if (opcode_ptr->opcode == ZEND_FETCH_W) {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, opcode_ptr, opcode_ptr->op1_type, &opcode_ptr->op1, &is_var), 0, options);

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

}

if (is_static && opcode_ptr->opcode == ZEND_FETCH_RW) {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, opcode_ptr, opcode_ptr->op1_type, &opcode_ptr->op1, &is_var), 0, options);

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

}

if (opcode_ptr->opcode == ZEND_FETCH_DIM_W) {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, opcode_ptr, opcode_ptr->op2_type, &opcode_ptr->op2, &is_var), 0, NULL);

xdebug_str_addc(&name, '[');

if (zval_value) {

xdebug_str_add_str(&name, zval_value);

}

xdebug_str_addc(&name, ']');

xdebug_str_free(zval_value);

} else if (opcode_ptr->opcode == ZEND_FETCH_OBJ_W) {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, opcode_ptr, opcode_ptr->op2_type, &opcode_ptr->op2, &is_var), 0, options);

xdebug_str_addl(&name, "->", 2, 0);

xdebug_str_add_str(&name, zval_value);

xdebug_str_free(zval_value);

}

opcode_ptr = opcode_ptr + 1;

if (opcode_ptr->op1_type == IS_CV) {

cv_found = 1;

}

} while (!cv_found && (opcode_ptr->opcode == ZEND_FETCH_DIM_W || opcode_ptr->opcode == ZEND_FETCH_OBJ_W || opcode_ptr->opcode == ZEND_FETCH_W || opcode_ptr->opcode == ZEND_FETCH_RW));

}

if (cur_opcode->opcode == ZEND_ASSIGN_OBJ) {

if (cur_opcode->op1_type == IS_UNUSED) {

xdebug_str_add(&name, "$this", 0);

}

dimval = xdebug_get_zval(execute_data, cur_opcode->op2_type, &cur_opcode->op2, &is_var);

xdebug_str_add(&name, xdebug_sprintf("->%s", Z_STRVAL_P(dimval)), 1);

}

if (cur_opcode->opcode == ZEND_ASSIGN_DIM) {

if (next_opcode->opcode == ZEND_OP_DATA && cur_opcode->op2_type == IS_UNUSED) {

xdebug_str_add(&name, "[]", 0);

} else {

zval_value = xdebug_get_zval_value(xdebug_get_zval_with_opline(execute_data, opcode_ptr, opcode_ptr->op2_type, &opcode_ptr->op2, &is_var), 0, NULL);

xdebug_str_addc(&name, '[');

xdebug_str_add_str(&name, zval_value);

xdebug_str_addc(&name, ']');

xdebug_str_free(zval_value);

}

xdfree(options->runtime);

xdfree(options);

return name.d;

}

static int xdebug_common_assign_dim_handler(const char *op, int do_cc, zend_execute_data *execute_data)

{

char *file;

zend_op_array *op_array = &execute_data->func->op_array;

int lineno;

const zend_op *cur_opcode, *next_opcode;

zval *val = NULL;

char *right_full_varname = NULL;

int is_var;

function_stack_entry *fse;

GET_CUR_XG;

cur_opcode = execute_data->opline;

next_opcode = cur_opcode + 1;

file = (char*) STR_NAME_VAL(op_array->filename);

lineno = cur_opcode->lineno;

/* TODO TEST FOR ASSIGNMENTS IN FILTERING */

// if (xdebug_is_top_stack_frame_filtered(XDEBUG_FILTER_CODE_COVERAGE)) {

// return ZEND_USER_OPCODE_DISPATCH;

// }

if (!op_array->reserved[XG(code_coverage_filter_offset)] && XG(do_code_coverage)) {

xdebug_print_opcode_info('=', execute_data, cur_opcode TSRMLS_CC);

if (do_cc) {

xdebug_count_line(file, lineno, 0, 0 TSRMLS_CC);

}

if (XG(do_trace) && XG(trace_context) && XG(collect_assignments)) {

char *full_varname;

if (cur_opcode->opcode == ZEND_QM_ASSIGN && cur_opcode->result_type != IS_CV) {

return ZEND_USER_OPCODE_DISPATCH;

}

full_varname = xdebug_find_var_name(execute_data, execute_data->opline, NULL TSRMLS_CC);

if (cur_opcode->opcode >= ZEND_PRE_INC && cur_opcode->opcode <= ZEND_POST_DEC) {

char *tmp_varname;

switch (cur_opcode->opcode) {

case ZEND_PRE_INC: tmp_varname = xdebug_sprintf("++%s", full_varname); break;

case ZEND_POST_INC: tmp_varname = xdebug_sprintf("%s++", full_varname); break;

case ZEND_PRE_DEC: tmp_varname = xdebug_sprintf("--%s", full_varname); break;

case ZEND_POST_DEC: tmp_varname = xdebug_sprintf("%s--", full_varname); break;

}

xdfree(full_varname);

full_varname = tmp_varname;

val = xdebug_get_zval(execute_data, cur_opcode->op1_type, &cur_opcode->op1, &is_var);

} else if (cur_opcode->opcode >= ZEND_PRE_INC_OBJ && cur_opcode->opcode <= ZEND_POST_DEC_OBJ) {

char *tmp_varname;

switch (cur_opcode->opcode) {

case ZEND_PRE_INC_OBJ: tmp_varname = xdebug_sprintf("++%s", full_varname); break;

case ZEND_POST_INC_OBJ: tmp_varname = xdebug_sprintf("%s++", full_varname); break;

case ZEND_PRE_DEC_OBJ: tmp_varname = xdebug_sprintf("--%s", full_varname); break;

case ZEND_POST_DEC_OBJ: tmp_varname = xdebug_sprintf("%s--", full_varname); break;

}

xdfree(full_varname);

full_varname = tmp_varname;

val = xdebug_get_zval(execute_data, cur_opcode->op2_type, &cur_opcode->op2, &is_var);

} else if (next_opcode->opcode == ZEND_OP_DATA) {

val = xdebug_get_zval_with_opline(execute_data, next_opcode, next_opcode->op1_type, &next_opcode->op1, &is_var);

} else if (cur_opcode->opcode == ZEND_QM_ASSIGN) {

val = xdebug_get_zval(execute_data, cur_opcode->op1_type, &cur_opcode->op1, &is_var);

} else if (cur_opcode->opcode == ZEND_ASSIGN_REF) {

if (cur_opcode->op2_type == IS_CV) {

right_full_varname = xdebug_sprintf("$%s", zend_get_compiled_variable_name(op_array, cur_opcode->op2.var)->val);

} else {

const zend_op *referenced_opline = xdebug_find_referenced_opline(execute_data, cur_opcode, 2);

#if PHP_VERSION_ID <= 70100

const zend_op *previous_opline = xdebug_find_referenced_opline(execute_data, cur_opcode, 1);

right_full_varname = xdebug_find_var_name(execute_data, referenced_opline, previous_opline + 1);

#else

right_full_varname = xdebug_find_var_name(execute_data, referenced_opline, NULL);

#endif

}

} else {

val = xdebug_get_zval(execute_data, cur_opcode->op2_type, &cur_opcode->op2, &is_var);

}

fse = XDEBUG_LLIST_VALP(XDEBUG_LLIST_TAIL(CUR_XG(stack)));

if (XG(do_trace) && XG(trace_context) && XG(collect_assignments) && XG(trace_handler)->assignment) {

XG(trace_handler)->assignment(XG(trace_context), fse, full_varname, val, right_full_varname, op, file, lineno TSRMLS_CC);

}

xdfree(full_varname);

}

return ZEND_USER_OPCODE_DISPATCH;

}

#define XDEBUG_OPCODE_OVERRIDE_ASSIGN(f,o,cc) \

int xdebug_##f##_handler(zend_execute_data *execute_data) \

{ \

return xdebug_common_assign_dim_handler((o), (cc), execute_data); \

}

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign,"=",1)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(qm_assign,"=",1)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_add,"+=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_sub,"-=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_mul,"*=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_div,"/=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_mod,"%=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_pow,"**=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_sl,"<<=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_sr,">>=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(pre_inc,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(post_inc,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(pre_dec,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(post_dec,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(pre_inc_obj,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(post_inc_obj,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(pre_dec_obj,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(post_dec_obj,"",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_concat,".=",1)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_bw_or,"|=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_bw_and,"&=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_bw_xor,"^=",0)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_dim,"=",1)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_obj,"=",1)

XDEBUG_OPCODE_OVERRIDE_ASSIGN(assign_ref,"=&",1)

void xdebug_count_line(char *filename, int lineno, int executable, int deadcode TSRMLS_DC)

{

xdebug_coverage_file *file;

xdebug_coverage_line *line;

if (XG(previous_filename) && strcmp(XG(previous_filename), filename) == 0) {

file = XG(previous_file);

} else {

/* Check if the file already exists in the hash */

if (!xdebug_hash_find(XG(code_coverage), filename, strlen(filename), (void *) &file)) {

/* The file does not exist, so we add it to the hash */

file = xdebug_coverage_file_ctor(filename);

xdebug_hash_add(XG(code_coverage), filename, strlen(filename), file);

}

XG(previous_filename) = file->name;

XG(previous_file) = file;

}

/* Check if the line already exists in the hash */

if (!xdebug_hash_index_find(file->lines, lineno, (void *) &line)) {

line = xdmalloc(sizeof(xdebug_coverage_line));

line->lineno = lineno;

line->count = 0;

line->executable = 0;

xdebug_hash_index_add(file->lines, lineno, line);

}

if (executable) {

if (line->executable != 1 && deadcode) {

line->executable = 2;

} else {

line->executable = 1;

}

} else {

line->count++;

}

static void prefill_from_opcode(char *fn, zend_op opcode, int deadcode TSRMLS_DC)

{

if (

opcode.opcode != ZEND_NOP &&

opcode.opcode != ZEND_EXT_NOP &&

opcode.opcode != ZEND_RECV &&

opcode.opcode != ZEND_RECV_INIT

&& opcode.opcode != ZEND_VERIFY_ABSTRACT_CLASS

&& opcode.opcode != ZEND_OP_DATA

&& opcode.opcode != ZEND_ADD_INTERFACE

&& opcode.opcode != ZEND_TICKS

&& opcode.opcode != ZEND_FAST_CALL

&& opcode.opcode != ZEND_RECV_VARIADIC

) {

xdebug_count_line(fn, opcode.lineno, 1, deadcode TSRMLS_CC);

}

#define XDEBUG_ZNODE_ELEM(node,var) node.var

static int xdebug_find_jumps(zend_op_array *opa, unsigned int position, size_t *jump_count, int *jumps)

{

#if ZEND_USE_ABS_JMP_ADDR

zend_op *base_address = &(opa->opcodes[0]);

#endif

zend_op opcode = opa->opcodes[position];

if (opcode.opcode == ZEND_JMP) {

jumps[0] = XDEBUG_ZNODE_JMP_LINE(opcode.op1, position, base_address);

*jump_count = 1;

return 1;

} else if (

opcode.opcode == ZEND_JMPZ ||

opcode.opcode == ZEND_JMPNZ ||

opcode.opcode == ZEND_JMPZ_EX ||

opcode.opcode == ZEND_JMPNZ_EX

) {

jumps[0] = position + 1;

jumps[1] = XDEBUG_ZNODE_JMP_LINE(opcode.op2, position, base_address);

*jump_count = 2;

return 1;

} else if (opcode.opcode == ZEND_JMPZNZ) {

jumps[0] = XDEBUG_ZNODE_JMP_LINE(opcode.op2, position, base_address);

jumps[1] = position + ((int32_t) opcode.extended_value / (int32_t) sizeof(zend_op));

*jump_count = 2;

return 1;

} else if (opcode.opcode == ZEND_FE_FETCH_R || opcode.opcode == ZEND_FE_FETCH_RW) {

jumps[0] = position + 1;

jumps[1] = position + (opcode.extended_value / sizeof(zend_op));

*jump_count = 2;

return 1;

} else if (opcode.opcode == ZEND_FE_RESET_R || opcode.opcode == ZEND_FE_RESET_RW) {

jumps[0] = position + 1;

jumps[1] = XDEBUG_ZNODE_JMP_LINE(opcode.op2, position, base_address);

*jump_count = 2;

return 1;

} else if (opcode.opcode == ZEND_CATCH) {

*jump_count = 2;

jumps[0] = position + 1;

#if PHP_VERSION_ID >= 70300

if (!(opcode.extended_value & ZEND_LAST_CATCH)) {

jumps[1] = XDEBUG_ZNODE_JMP_LINE(opcode.op2, position, base_address);

#else

if (!opcode.result.num) {

# if PHP_VERSION_ID >= 70100

jumps[1] = position + (opcode.extended_value / sizeof(zend_op));

# else

jumps[1] = opcode.extended_value;

# endif

#endif

if (jumps[1] == jumps[0]) {

jumps[1] = XDEBUG_JMP_NOT_SET;

*jump_count = 1;

}

} else {

jumps[1] = XDEBUG_JMP_EXIT;

}

return 1;

} else if (opcode.opcode == ZEND_GOTO) {

jumps[0] = XDEBUG_ZNODE_JMP_LINE(opcode.op1, position, base_address);

*jump_count = 1;

return 1;

} else if (opcode.opcode == ZEND_FAST_CALL) {

jumps[0] = XDEBUG_ZNODE_JMP_LINE(opcode.op1, position, base_address);

jumps[1] = position + 1;

*jump_count = 2;

return 1;

} else if (opcode.opcode == ZEND_FAST_RET) {

jumps[0] = XDEBUG_JMP_EXIT;

*jump_count = 1;

return 1;

} else if (

opcode.opcode == ZEND_GENERATOR_RETURN ||

opcode.opcode == ZEND_EXIT ||

opcode.opcode == ZEND_THROW ||

opcode.opcode == ZEND_RETURN

) {

jumps[0] = XDEBUG_JMP_EXIT;

*jump_count = 1;

return 1;

#if PHP_VERSION_ID >= 70200

} else if (

opcode.opcode == ZEND_SWITCH_LONG ||

opcode.opcode == ZEND_SWITCH_STRING

) {

zval *array_value;

HashTable *myht;

zval *val;

# if PHP_VERSION_ID >= 70300

array_value = RT_CONSTANT(&opa->opcodes[position], opcode.op2);

# else

array_value = RT_CONSTANT_EX(opa->literals, opcode.op2);

# endif

myht = Z_ARRVAL_P(array_value);

/* All 'case' statements */

ZEND_HASH_FOREACH_VAL_IND(myht, val) {

if (*jump_count < XDEBUG_BRANCH_MAX_OUTS - 2) {

jumps[*jump_count] = position + (val->value.lval / sizeof(zend_op));

(*jump_count)++;

}

} ZEND_HASH_FOREACH_END();

/* The 'default' case */

jumps[*jump_count] = position + (opcode.extended_value / sizeof(zend_op));

(*jump_count)++;

/* The 'next' opcode */

jumps[*jump_count] = position + 1;

(*jump_count)++;

return 1;

#endif

}

return 0;

}

static void xdebug_analyse_branch(zend_op_array *opa, unsigned int position, xdebug_set *set, xdebug_branch_info *branch_info TSRMLS_DC)

{

/* fprintf(stderr, "Branch analysis from position: %d\n", position); */

if (branch_info) {

xdebug_set_add(branch_info->starts, position);

branch_info->branches[position].start_lineno = opa->opcodes[position].lineno;

}

/* First we see if the branch has been visited, if so we bail out. */

if (xdebug_set_in(set, position)) {

return;

}

/* fprintf(stderr, "XDEBUG Adding %d\n", position); */

/* Loop over the opcodes until the end of the array, or until a jump point has been found */

xdebug_set_add(set, position);

while (position < opa->last) {

size_t jump_count = 0;

int jumps[XDEBUG_BRANCH_MAX_OUTS];

size_t i;

/* See if we have a jump instruction */

if (xdebug_find_jumps(opa, position, &jump_count, jumps)) {

for (i = 0; i < jump_count; i++) {

if (jumps[i] == XDEBUG_JMP_EXIT || jumps[i] != XDEBUG_JMP_NOT_SET) {

if (branch_info) {

xdebug_branch_info_update(branch_info, position, opa->opcodes[position].lineno, i, jumps[i]);

}

if (jumps[i] != XDEBUG_JMP_EXIT) {

xdebug_analyse_branch(opa, jumps[i], set, branch_info TSRMLS_CC);

}

break;

}

/* See if we have a throw instruction */

if (opa->opcodes[position].opcode == ZEND_THROW) {

/* fprintf(stderr, "Throw found at %d\n", position); */

if (branch_info) {

xdebug_set_add(branch_info->ends, position);

branch_info->branches[position].start_lineno = opa->opcodes[position].lineno;

}

break;

}

/* See if we have an exit instruction */

if (opa->opcodes[position].opcode == ZEND_EXIT) {

/* fprintf(stderr, "X* Return found\n"); */

if (branch_info) {

xdebug_set_add(branch_info->ends, position);

branch_info->branches[position].start_lineno = opa->opcodes[position].lineno;

}

break;

}

/* See if we have a return instruction */

if (

opa->opcodes[position].opcode == ZEND_RETURN

|| opa->opcodes[position].opcode == ZEND_RETURN_BY_REF

) {

/*(fprintf(stderr, "XDEBUG Return found\n");)*/

if (branch_info) {

xdebug_set_add(branch_info->ends, position);

branch_info->branches[position].start_lineno = opa->opcodes[position].lineno;

}

break;

}

position++;

/*(fprintf(stderr, "XDEBUG Adding %d\n", position);)*/

xdebug_set_add(set, position);

}

static void xdebug_analyse_oparray(zend_op_array *opa, xdebug_set *set, xdebug_branch_info *branch_info TSRMLS_DC)

{

unsigned int position = 0;

while (position < opa->last) {

if (position == 0) {

xdebug_analyse_branch(opa, position, set, branch_info TSRMLS_CC);

if (branch_info) {

xdebug_set_add(branch_info->entry_points, position);

}

} else if (opa->opcodes[position].opcode == ZEND_CATCH) {

xdebug_analyse_branch(opa, position, set, branch_info TSRMLS_CC);

if (branch_info) {

xdebug_set_add(branch_info->entry_points, position);

}

position++;

}

if (branch_info) {

xdebug_set_add(branch_info->ends, opa->last-1);

branch_info->branches[opa->last-1].start_lineno = opa->opcodes[opa->last-1].lineno;

}

void xdebug_build_fname_from_oparray(xdebug_func *tmp, zend_op_array *opa TSRMLS_DC)

{

int closure = 0;

memset(tmp, 0, sizeof(xdebug_func));

if (opa->function_name) {

if (xdebug_function_name_is_closure(STR_NAME_VAL(opa->function_name))) {

tmp->function = xdebug_wrap_closure_location_around_function_name(opa, STR_NAME_VAL(opa->function_name));

closure = 1;

} else {

tmp->function = xdstrdup(STR_NAME_VAL(opa->function_name));

}

} else {

tmp->function = xdstrdup("{main}");

}

if (opa->scope && !closure) {

tmp->type = XFUNC_MEMBER;

tmp->class = xdstrdup(STR_NAME_VAL(opa->scope->name));

} else {

tmp->type = XFUNC_NORMAL;

}

char* xdebug_func_format(xdebug_func *func TSRMLS_DC)

{

switch (func->type) {

case XFUNC_NORMAL:

return xdstrdup(func->function);

case XFUNC_MEMBER:

return xdebug_sprintf("%s->%s", func->class, func->function);

default:

return xdstrdup("???");

}

static void prefill_from_oparray(char *filename, zend_op_array *op_array TSRMLS_DC)

{

unsigned int i;

xdebug_set *set = NULL;

xdebug_branch_info *branch_info = NULL;

op_array->reserved[XG(dead_code_analysis_tracker_offset)] = (void*) XG(dead_code_last_start_id);

/* Check for abstract methods and simply return from this function in those

* cases. */

if (op_array->fn_flags & ZEND_ACC_ABSTRACT) {

return;

}

/* Check whether this function should be filtered out */

{

function_stack_entry tmp_fse;

tmp_fse.filename = STR_NAME_VAL(op_array->filename);

xdebug_build_fname_from_oparray(&tmp_fse.function, op_array TSRMLS_CC);

printf(" - PREFIL FILTERED FOR %s (%s::%s): %s\n",

tmp_fse.filename, tmp_fse.function.class, tmp_fse.function.function,

op_array->reserved[XG(code_coverage_filter_offset)] ? "YES" : "NO");

if (op_array->reserved[XG(code_coverage_filter_offset)]) {

return;

}

/* Run dead code analysis if requested */

if (XG(code_coverage_dead_code_analysis) && (op_array->fn_flags & ZEND_ACC_DONE_PASS_TWO)) {

set = xdebug_set_create(op_array->last);

if (XG(code_coverage_branch_check)) {

branch_info = xdebug_branch_info_create(op_array->last);

}

xdebug_analyse_oparray(op_array, set, branch_info TSRMLS_CC);

}

/* The normal loop then finally */

for (i = 0; i < op_array->last; i++) {

zend_op opcode = op_array->opcodes[i];

prefill_from_opcode(filename, opcode, set ? !xdebug_set_in(set, i) : 0 TSRMLS_CC);

}

if (set) {

xdebug_set_free(set);

}

if (branch_info) {

char *function_name;

xdebug_func func_info;

xdebug_build_fname_from_oparray(&func_info, op_array TSRMLS_CC);

function_name = xdebug_func_format(&func_info TSRMLS_CC);

if (func_info.class) {

xdfree(func_info.class);

}

if (func_info.function) {

xdfree(func_info.function);

}

xdebug_branch_post_process(op_array, branch_info);

xdebug_branch_find_paths(branch_info);

xdebug_branch_info_add_branches_and_paths(filename, (char*) function_name, branch_info TSRMLS_CC);

xdfree(function_name);

}

static int prefill_from_function_table(zend_op_array *opa)

{

if (opa->type == ZEND_USER_FUNCTION) {

if ((long) opa->reserved[XG(dead_code_analysis_tracker_offset)] < XG(dead_code_last_start_id)) {

prefill_from_oparray((char*) STR_NAME_VAL(opa->filename), opa TSRMLS_CC);

}

return ZEND_HASH_APPLY_KEEP;

}

static int prefill_from_class_table(zend_class_entry *class_entry)

{

zend_class_entry *ce;

ce = class_entry;

if (ce->type == ZEND_USER_CLASS) {

if (!(ce->ce_flags & ZEND_XDEBUG_VISITED)) {

zend_op_array *val;

ce->ce_flags |= ZEND_XDEBUG_VISITED;

xdebug_zend_hash_apply_protection_begin(&ce->function_table);

ZEND_HASH_FOREACH_PTR(&ce->function_table, val) {

prefill_from_function_table(val);

} ZEND_HASH_FOREACH_END();

xdebug_zend_hash_apply_protection_end(&ce->function_table);

}

return ZEND_HASH_APPLY_KEEP;

}

void xdebug_prefill_code_coverage(zend_op_array *op_array TSRMLS_DC)

{

zend_op_array *function_op_array;

zend_class_entry *class_entry;

if ((long) op_array->reserved[XG(dead_code_analysis_tracker_offset)] < XG(dead_code_last_start_id)) {

prefill_from_oparray((char*) STR_NAME_VAL(op_array->filename), op_array TSRMLS_CC);

}

xdebug_zend_hash_apply_protection_begin(CG(function_table));

ZEND_HASH_FOREACH_PTR(CG(function_table), function_op_array) {

prefill_from_function_table(function_op_array);

} ZEND_HASH_FOREACH_END();

xdebug_zend_hash_apply_protection_end(CG(function_table));

xdebug_zend_hash_apply_protection_begin(CG(class_table));

ZEND_HASH_FOREACH_PTR(CG(class_table), class_entry) {

prefill_from_class_table(class_entry);

} ZEND_HASH_FOREACH_END();

xdebug_zend_hash_apply_protection_end(CG(class_table));

}

void xdebug_code_coverage_start_of_function(zend_op_array *op_array, char *function_name TSRMLS_DC)

{

xdebug_path *path = xdebug_path_new(NULL);

GET_CUR_XG;

xdebug_prefill_code_coverage(op_array TSRMLS_CC);

xdebug_path_info_add_path_for_level(CUR_XG(paths_stack), path, CUR_XG(level) TSRMLS_CC);

if (CUR_XG(branches).size == 0 || CUR_XG(level) >= CUR_XG(branches).size) {

CUR_XG(branches).size = CUR_XG(level) + 32;

CUR_XG(branches).last_branch_nr = realloc(CUR_XG(branches).last_branch_nr, sizeof(int) * CUR_XG(branches).size);

}

CUR_XG(branches).last_branch_nr[CUR_XG(level)] = -1;

}

void xdebug_code_coverage_end_of_function(zend_op_array *op_array, char *file_name, char *function_name TSRMLS_DC)

{

GET_CUR_XG;

xdebug_str str = XDEBUG_STR_INITIALIZER;

xdebug_path *path = xdebug_path_info_get_path_for_level(CUR_XG(paths_stack), CUR_XG(level) TSRMLS_CC);

if (!path) {

return;

}

xdebug_create_key_for_path(path, &str);

xdebug_branch_info_mark_end_of_function_reached(file_name, function_name, str.d, str.l TSRMLS_CC);

xdfree(str.d);

if (path) {

xdebug_path_free(path);

}

PHP_FUNCTION(xdebug_start_code_coverage)

{

zend_long options = 0;

if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &options) == FAILURE) {

return;

}

XG(code_coverage_unused) = (options & XDEBUG_CC_OPTION_UNUSED);

XG(code_coverage_dead_code_analysis) = (options & XDEBUG_CC_OPTION_DEAD_CODE);

XG(code_coverage_branch_check) = (options & XDEBUG_CC_OPTION_BRANCH_CHECK);

if (!XG(extended_info)) {

php_error(E_WARNING, "You can only use code coverage when you leave the setting of 'xdebug.extended_info' to the default '1'.");

RETURN_FALSE;

} else if (!XG(code_coverage)) {

php_error(E_WARNING, "Code coverage needs to be enabled in php.ini by setting 'xdebug.coverage_enable' to '1'.");

RETURN_FALSE;

} else {

XG(do_code_coverage) = 1;

RETURN_TRUE;

}

PHP_FUNCTION(xdebug_stop_code_coverage)

{

zend_long cleanup = 1;

GET_CUR_XG;

if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &cleanup) == FAILURE) {

return;

}

if (XG(do_code_coverage)) {

if (cleanup) {

XG(previous_filename) = NULL;

XG(previous_file) = NULL;

XG(previous_mark_filename) = NULL;

XG(previous_mark_file) = NULL;

xdebug_hash_destroy(XG(code_coverage));

XG(code_coverage) = xdebug_hash_alloc(32, xdebug_coverage_file_dtor);

XG(dead_code_last_start_id)++;

xdebug_path_info_dtor(CUR_XG(paths_stack));

CUR_XG(paths_stack) = xdebug_path_info_ctor();

}

XG(do_code_coverage) = 0;

RETURN_TRUE;

}

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sdebug/xdebug_code_coverage.c at sdebug_2_7 · boocent/sdebug · GitHub

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