mirror of
https://github.com/php/php-src.git
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245 lines
7.7 KiB
C
245 lines
7.7 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2014 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Felipe Pena <felipe@php.net> |
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| Authors: Joe Watkins <joe.watkins@live.co.uk> |
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| Authors: Bob Weinand <bwoebi@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "zend.h"
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#include "phpdbg.h"
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#include "phpdbg_utils.h"
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#include "phpdbg_frame.h"
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#include "phpdbg_list.h"
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ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
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void phpdbg_restore_frame(TSRMLS_D) /* {{{ */
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{
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if (PHPDBG_FRAME(num) == 0) {
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return;
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}
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PHPDBG_FRAME(num) = 0;
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/* move things back */
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EG(current_execute_data) = PHPDBG_FRAME(execute_data);
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EG(opline_ptr) = &PHPDBG_EX(opline);
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EG(active_op_array) = PHPDBG_EX(op_array);
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EG(return_value_ptr_ptr) = PHPDBG_EX(original_return_value);
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EG(active_symbol_table) = PHPDBG_EX(symbol_table);
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EG(This) = PHPDBG_EX(current_this);
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EG(scope) = PHPDBG_EX(current_scope);
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EG(called_scope) = PHPDBG_EX(current_called_scope);
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} /* }}} */
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void phpdbg_switch_frame(int frame TSRMLS_DC) /* {{{ */
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{
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zend_execute_data *execute_data = PHPDBG_FRAME(num)?PHPDBG_FRAME(execute_data):EG(current_execute_data);
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int i = 0;
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if (PHPDBG_FRAME(num) == frame) {
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phpdbg_notice("frame", "id=\"%d\"", "Already in frame #%d", frame);
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return;
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}
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phpdbg_try_access {
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while (execute_data) {
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if (i++ == frame) {
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break;
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}
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do {
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execute_data = execute_data->prev_execute_data;
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} while (execute_data && execute_data->opline == NULL);
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}
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} phpdbg_catch_access {
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phpdbg_error("signalsegv", "", "Couldn't switch frames, invalid data source");
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return;
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} phpdbg_end_try_access();
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if (execute_data == NULL) {
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phpdbg_error("frame", "type=\"maxnum\" id=\"%d\"", "No frame #%d", frame);
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return;
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}
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phpdbg_restore_frame(TSRMLS_C);
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if (frame > 0) {
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PHPDBG_FRAME(num) = frame;
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/* backup things and jump back */
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PHPDBG_FRAME(execute_data) = EG(current_execute_data);
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EG(current_execute_data) = execute_data;
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EG(opline_ptr) = &PHPDBG_EX(opline);
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EG(active_op_array) = PHPDBG_EX(op_array);
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PHPDBG_FRAME(execute_data)->original_return_value = EG(return_value_ptr_ptr);
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EG(return_value_ptr_ptr) = PHPDBG_EX(original_return_value);
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EG(active_symbol_table) = PHPDBG_EX(symbol_table);
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EG(This) = PHPDBG_EX(current_this);
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EG(scope) = PHPDBG_EX(current_scope);
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EG(called_scope) = PHPDBG_EX(current_called_scope);
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}
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phpdbg_notice("frame", "id=\"%d\"", "Switched to frame #%d", frame);
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phpdbg_list_file(
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zend_get_executed_filename(TSRMLS_C),
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3,
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zend_get_executed_lineno(TSRMLS_C)-1,
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zend_get_executed_lineno(TSRMLS_C)
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TSRMLS_CC
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);
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} /* }}} */
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static void phpdbg_dump_prototype(zval **tmp TSRMLS_DC) /* {{{ */
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{
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zval **funcname, **class, **type, **args, **argstmp;
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char is_class;
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int has_args = FAILURE;
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zend_hash_find(Z_ARRVAL_PP(tmp), "function", sizeof("function"), (void **) &funcname);
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if ((is_class = zend_hash_find(Z_ARRVAL_PP(tmp), "object", sizeof("object"), (void **) &class)) == FAILURE) {
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is_class = zend_hash_find(Z_ARRVAL_PP(tmp), "class", sizeof("class"), (void **)&class);
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} else {
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zend_get_object_classname(*class, (const char **) &Z_STRVAL_PP(class), (zend_uint *) &Z_STRLEN_PP(class) TSRMLS_CC);
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}
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if (is_class == SUCCESS) {
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zend_hash_find(Z_ARRVAL_PP(tmp), "type", sizeof("type"), (void **)&type);
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}
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has_args = zend_hash_find(Z_ARRVAL_PP(tmp), "args", sizeof("args"), (void **)&args) == SUCCESS;
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phpdbg_xml(" symbol=\"%s%s%s\"",
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is_class == FAILURE?"":Z_STRVAL_PP(class),
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is_class == FAILURE?"":Z_STRVAL_PP(type),
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Z_STRVAL_PP(funcname)
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);
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if (has_args) {
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phpdbg_xml(">");
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} else {
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phpdbg_xml(" />");
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}
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phpdbg_out("%s%s%s(",
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is_class == FAILURE?"":Z_STRVAL_PP(class),
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is_class == FAILURE?"":Z_STRVAL_PP(type),
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Z_STRVAL_PP(funcname)
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);
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if (has_args) {
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HashPosition iterator;
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const zend_function *func = NULL;
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const zend_arg_info *arginfo = NULL;
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int j = 0, m;
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zend_bool is_variadic = 0;
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phpdbg_try_access {
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/* assuming no autoloader call is necessary, class should have been loaded if it's in backtrace ... */
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if ((func = phpdbg_get_function(Z_STRVAL_PP(funcname), is_class == FAILURE ? NULL : Z_STRVAL_PP(class) TSRMLS_CC))) {
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arginfo = func->common.arg_info;
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}
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} phpdbg_end_try_access();
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m = func ? func->common.num_args : 0;
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zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(args), &iterator);
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while (zend_hash_get_current_data_ex(Z_ARRVAL_PP(args), (void **) &argstmp, &iterator) == SUCCESS) {
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if (j) {
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phpdbg_out(", ");
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}
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phpdbg_xml("<arg %r");
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if (m && j < m) {
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#if PHP_VERSION_ID >= 50600
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is_variadic = arginfo ? arginfo[j].is_variadic : 0;
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#endif
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phpdbg_xml(" variadic=\"%s\" name=\"%s\">", is_variadic ? "variadic" : "", arginfo ? arginfo[j].name : "");
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phpdbg_out("%s=%s", arginfo ? arginfo[j].name : "?", is_variadic ? "[": "");
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} else {
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phpdbg_xml(">");
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}
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++j;
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zend_print_flat_zval_r(*argstmp TSRMLS_CC);
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zend_hash_move_forward_ex(Z_ARRVAL_PP(args), &iterator);
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phpdbg_xml("</arg>");
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}
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if (is_variadic) {
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phpdbg_out("]");
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}
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phpdbg_xml("</frame>");
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}
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phpdbg_out(")");
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}
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void phpdbg_dump_backtrace(size_t num TSRMLS_DC) /* {{{ */
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{
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zval zbacktrace;
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zval **tmp;
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zval **file, **line;
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HashPosition position;
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int i = 0, limit = num;
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int user_defined;
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if (limit < 0) {
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phpdbg_error("backtrace", "type=\"minnum\"", "Invalid backtrace size %d", limit);
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return;
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}
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phpdbg_try_access {
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zend_fetch_debug_backtrace(&zbacktrace, 0, 0, limit TSRMLS_CC);
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} phpdbg_catch_access {
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phpdbg_error("signalsegv", "", "Couldn't fetch backtrace, invalid data source");
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return;
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} phpdbg_end_try_access();
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phpdbg_xml("<backtrace %r>");
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zend_hash_internal_pointer_reset_ex(Z_ARRVAL(zbacktrace), &position);
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zend_hash_get_current_data_ex(Z_ARRVAL(zbacktrace), (void **) &tmp, &position);
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while (1) {
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user_defined = zend_hash_find(Z_ARRVAL_PP(tmp), "file", sizeof("file"), (void **) &file);
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zend_hash_find(Z_ARRVAL_PP(tmp), "line", sizeof("line"), (void **) &line);
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zend_hash_move_forward_ex(Z_ARRVAL(zbacktrace), &position);
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if (zend_hash_get_current_data_ex(Z_ARRVAL(zbacktrace), (void **) &tmp, &position) == FAILURE) {
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phpdbg_write("frame", "id=\"%d\" symbol=\"{main}\" file=\"%s\" line=\"%d\"", "frame #%d: {main} at %s:%ld", i, Z_STRVAL_PP(file), Z_LVAL_PP(line));
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break;
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}
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if (user_defined == SUCCESS) {
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phpdbg_out("frame #%d: ", i++);
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phpdbg_xml("<frame %r id=\"%d\" file=\"%s\" line=\"%d\"", i, Z_STRVAL_PP(file), Z_LVAL_PP(line));
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phpdbg_dump_prototype(tmp TSRMLS_CC);
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phpdbg_out(" at %s:%ld\n", Z_STRVAL_PP(file), Z_LVAL_PP(line));
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} else {
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phpdbg_out(" => ");
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phpdbg_xml("<frame %r id=\"%d\" internal=\"internal\"", i);
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phpdbg_dump_prototype(tmp TSRMLS_CC);
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phpdbg_out(" (internal function)\n");
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}
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}
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phpdbg_out("\n");
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phpdbg_xml("</backtrace>");
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zval_dtor(&zbacktrace);
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} /* }}} */
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