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dis-bench / src /php /php-src /sapi /phpdbg /phpdbg_print.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Felipe Pena <felipe@php.net> |
| Authors: Joe Watkins <joe.watkins@live.co.uk> |
| Authors: Bob Weinand <bwoebi@php.net> |
+----------------------------------------------------------------------+
*/
#include "phpdbg.h"
#include "phpdbg_print.h"
#include "phpdbg_utils.h"
#include "phpdbg_prompt.h"
#include "Optimizer/zend_dump.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg)
#define PHPDBG_PRINT_COMMAND_D(f, h, a, m, l, s, flags) \
PHPDBG_COMMAND_D_EXP(f, h, a, m, l, s, &phpdbg_prompt_commands[8], flags)
const phpdbg_command_t phpdbg_print_commands[] = {
PHPDBG_PRINT_COMMAND_D(exec, "print out the instructions in the main execution context", 'e', print_exec, NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(opline, "print out the instruction in the current opline", 'o', print_opline, NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(class, "print out the instructions in the specified class", 'c', print_class, NULL, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(method, "print out the instructions in the specified method", 'm', print_method, NULL, "m", PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(func, "print out the instructions in the specified function", 'f', print_func, NULL, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(stack, "print out the instructions in the current stack", 's', print_stack, NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_END_COMMAND
};
PHPDBG_PRINT(opline) /* {{{ */
{
if (PHPDBG_G(in_execution) && EG(current_execute_data)) {
phpdbg_print_opline(phpdbg_user_execute_data(EG(current_execute_data)), 1);
} else {
phpdbg_error("Not Executing!");
}
return SUCCESS;
} /* }}} */
static inline void phpdbg_print_function_helper(zend_function *method) /* {{{ */
{
switch (method->type) {
case ZEND_USER_FUNCTION: {
zend_op_array* op_array = &(method->op_array);
zend_dump_op_array(op_array, ZEND_DUMP_LINE_NUMBERS, NULL, NULL);
for (uint32_t i = 0; i < op_array->num_dynamic_func_defs; i++) {
zend_op_array *def = op_array->dynamic_func_defs[i];
phpdbg_out("\ndynamic def: %i, function name: %.*s\n",
i, (int) ZSTR_LEN(def->function_name), ZSTR_VAL(def->function_name));
zend_dump_op_array(def, ZEND_DUMP_LINE_NUMBERS, NULL, NULL);
}
} break;
default: {
if (method->common.scope) {
phpdbg_writeln("\tInternal %s::%s()", ZSTR_VAL(method->common.scope->name), ZSTR_VAL(method->common.function_name));
} else {
phpdbg_writeln("\tInternal %s()", ZSTR_VAL(method->common.function_name));
}
}
}
} /* }}} */
PHPDBG_PRINT(exec) /* {{{ */
{
if (PHPDBG_G(exec)) {
if (!PHPDBG_G(ops) && !(PHPDBG_G(flags) & PHPDBG_IN_SIGNAL_HANDLER)) {
phpdbg_compile();
}
if (PHPDBG_G(ops)) {
phpdbg_notice("Context %s (%d ops)", PHPDBG_G(exec), PHPDBG_G(ops)->last);
phpdbg_print_function_helper((zend_function*) PHPDBG_G(ops));
}
} else {
phpdbg_error("No execution context set");
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(stack) /* {{{ */
{
if (PHPDBG_G(in_execution) && EG(current_execute_data)) {
zend_op_array *ops = &phpdbg_user_execute_data(EG(current_execute_data))->func->op_array;
if (ops->function_name) {
if (ops->scope) {
phpdbg_notice("Stack in %s::%s() (%d ops)", ZSTR_VAL(ops->scope->name), ZSTR_VAL(ops->function_name), ops->last);
} else {
phpdbg_notice("Stack in %s() (%d ops)", ZSTR_VAL(ops->function_name), ops->last);
}
} else {
if (ops->filename) {
phpdbg_notice("Stack in %s (%d ops)", ZSTR_VAL(ops->filename), ops->last);
} else {
phpdbg_notice("Stack @ %p (%d ops)", ops, ops->last);
}
}
phpdbg_print_function_helper((zend_function*) ops);
} else {
phpdbg_error("Not Executing!");
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(class) /* {{{ */
{
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(param->str, param->len, &ce) == SUCCESS) {
phpdbg_notice("%s %s: %s (%d methods)",
(ce->type == ZEND_USER_CLASS) ?
"User" : "Internal",
(ce->ce_flags & ZEND_ACC_INTERFACE) ?
"Interface" :
(ce->ce_flags & ZEND_ACC_ABSTRACT) ?
"Abstract Class" :
"Class",
ZSTR_VAL(ce->name),
zend_hash_num_elements(&ce->function_table));
if (zend_hash_num_elements(&ce->function_table)) {
zend_function *method;
ZEND_HASH_MAP_FOREACH_PTR(&ce->function_table, method) {
phpdbg_print_function_helper(method);
} ZEND_HASH_FOREACH_END();
}
} else {
phpdbg_error("The class %s could not be found", param->str);
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(method) /* {{{ */
{
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(param->method.class, strlen(param->method.class), &ce) == SUCCESS) {
zend_function *fbc;
zend_string *lcname = zend_string_alloc(strlen(param->method.name), 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), param->method.name, ZSTR_LEN(lcname));
if ((fbc = zend_hash_find_ptr(&ce->function_table, lcname))) {
phpdbg_notice("%s Method %s (%d ops)",
(fbc->type == ZEND_USER_FUNCTION) ? "User" : "Internal",
ZSTR_VAL(fbc->common.function_name),
(fbc->type == ZEND_USER_FUNCTION) ? fbc->op_array.last : 0);
phpdbg_print_function_helper(fbc);
} else {
phpdbg_error("The method %s::%s could not be found", param->method.class, param->method.name);
}
zend_string_release(lcname);
} else {
phpdbg_error("The class %s could not be found", param->method.class);
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(func) /* {{{ */
{
HashTable *func_table = EG(function_table);
zend_function* fbc;
const char *func_name = param->str;
size_t func_name_len = param->len;
zend_string *lcname;
/* search active scope if begins with period */
if (func_name[0] == '.') {
zend_class_entry *scope = zend_get_executed_scope();
if (scope) {
func_name++;
func_name_len--;
func_table = &scope->function_table;
} else {
phpdbg_error("No active class");
return SUCCESS;
}
} else if (!EG(function_table)) {
phpdbg_error("No function table loaded");
return SUCCESS;
} else {
func_table = EG(function_table);
}
lcname = zend_string_alloc(func_name_len, 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), func_name, ZSTR_LEN(lcname));
phpdbg_try_access {
if ((fbc = zend_hash_find_ptr(func_table, lcname))) {
phpdbg_notice("%s %s %s (%d ops)",
(fbc->type == ZEND_USER_FUNCTION) ? "User" : "Internal",
(fbc->common.scope) ? "Method" : "Function",
ZSTR_VAL(fbc->common.function_name),
(fbc->type == ZEND_USER_FUNCTION) ? fbc->op_array.last : 0);
phpdbg_print_function_helper(fbc);
} else {
phpdbg_error("The function %s could not be found", func_name);
}
} phpdbg_catch_access {
phpdbg_error("Couldn't fetch function %.*s, invalid data source", (int) func_name_len, func_name);
} phpdbg_end_try_access();
efree(lcname);
return SUCCESS;
} /* }}} */
void phpdbg_print_opcodes_main(void) {
phpdbg_print_function_helper((zend_function *) PHPDBG_G(ops));
}
void phpdbg_print_opcodes_function(const char *function, size_t len) {
zend_function *func = zend_hash_str_find_ptr(EG(function_table), function, len);
if (!func) {
phpdbg_error("The function %s could not be found", function);
return;
}
phpdbg_print_function_helper(func);
}
static void phpdbg_print_opcodes_method_ce(zend_class_entry *ce, const char *function) {
zend_function *func;
if (ce->type != ZEND_USER_CLASS) {
phpdbg_out("function name: %s::%s (internal)\n", ce->name->val, function);
return;
}
if (!(func = zend_hash_str_find_ptr(&ce->function_table, function, strlen(function)))) {
phpdbg_error("The method %s::%s could not be found", ZSTR_VAL(ce->name), function);
return;
}
phpdbg_print_function_helper(func);
}
void phpdbg_print_opcodes_method(const char *class, const char *function) {
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(class, strlen(class), &ce) != SUCCESS) {
phpdbg_error("The class %s could not be found", class);
return;
}
phpdbg_print_opcodes_method_ce(ce, function);
}
static void phpdbg_print_opcodes_ce(zend_class_entry *ce) {
zend_function *method;
bool first = 1;
phpdbg_out("%s %s: %s\n",
(ce->type == ZEND_USER_CLASS) ?
"user" : "internal",
(ce->ce_flags & ZEND_ACC_INTERFACE) ?
"interface" :
(ce->ce_flags & ZEND_ACC_ABSTRACT) ?
"abstract Class" :
"class",
ZSTR_VAL(ce->name));
if (ce->type != ZEND_USER_CLASS) {
return;
}
phpdbg_out("%d methods: ", zend_hash_num_elements(&ce->function_table));
ZEND_HASH_MAP_FOREACH_PTR(&ce->function_table, method) {
if (first) {
first = 0;
} else {
phpdbg_out(", ");
}
phpdbg_out("%s", ZSTR_VAL(method->common.function_name));
} ZEND_HASH_FOREACH_END();
if (first) {
phpdbg_out("-");
}
phpdbg_out("\n");
ZEND_HASH_MAP_FOREACH_PTR(&ce->function_table, method) {
phpdbg_print_function_helper(method);
} ZEND_HASH_FOREACH_END();
}
void phpdbg_print_opcodes_class(const char *class) {
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(class, strlen(class), &ce) != SUCCESS) {
phpdbg_error("The class %s could not be found", class);
return;
}
phpdbg_print_opcodes_ce(ce);
}
void phpdbg_print_opcodes(const char *function)
{
if (function == NULL) {
phpdbg_print_opcodes_main();
} else if (function[0] == '*' && function[1] == 0) {
/* all */
zend_string *name;
zend_function *func;
zend_class_entry *ce;
phpdbg_print_opcodes_main();
ZEND_HASH_MAP_FOREACH_STR_KEY_PTR(EG(function_table), name, func) {
if (func->type == ZEND_USER_FUNCTION) {
phpdbg_print_opcodes_function(ZSTR_VAL(name), ZSTR_LEN(name));
}
} ZEND_HASH_FOREACH_END();
ZEND_HASH_MAP_FOREACH_PTR(EG(class_table), ce) {
if (ce->type == ZEND_USER_CLASS) {
phpdbg_out("\n");
phpdbg_print_opcodes_ce(ce);
}
} ZEND_HASH_FOREACH_END();
} else {
char *function_lowercase = zend_str_tolower_dup(function, strlen(function));
if (strstr(function_lowercase, "::") == NULL) {
phpdbg_print_opcodes_function(function_lowercase, strlen(function_lowercase));
} else {
char *method_name, *class_name = strtok(function_lowercase, "::");
if ((method_name = strtok(NULL, "::")) == NULL) {
phpdbg_print_opcodes_class(class_name);
} else {
phpdbg_print_opcodes_method(class_name, method_name);
}
}
efree(function_lowercase);
}
}
void phpdbg_print_opline(zend_execute_data *execute_data, bool ignore_flags) /* {{{ */
{
if (ignore_flags || (!(PHPDBG_G(flags) & PHPDBG_IS_QUIET) && (PHPDBG_G(flags) & PHPDBG_IS_STEPPING))) {
zend_dump_op_line(&EX(func)->op_array, NULL, EX(opline), ZEND_DUMP_LINE_NUMBERS, NULL);
}
if (PHPDBG_G(oplog_list)) {
phpdbg_oplog_entry *cur = zend_arena_alloc(&PHPDBG_G(oplog_arena), sizeof(phpdbg_oplog_entry));
zend_op_array *op_array = &EX(func)->op_array;
cur->op = (zend_op *) EX(opline);
cur->opcodes = op_array->opcodes;
cur->filename = op_array->filename;
cur->scope = op_array->scope;
cur->function_name = op_array->function_name;
cur->next = NULL;
PHPDBG_G(oplog_cur)->next = cur;
PHPDBG_G(oplog_cur) = cur;
}
} /* }}} */