diff options
Diffstat (limited to 'sapi/phpdbg/phpdbg_frame.c')
| -rw-r--r-- | sapi/phpdbg/phpdbg_frame.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/sapi/phpdbg/phpdbg_frame.c b/sapi/phpdbg/phpdbg_frame.c new file mode 100644 index 0000000000..de02addc1b --- /dev/null +++ b/sapi/phpdbg/phpdbg_frame.c @@ -0,0 +1,206 @@ +/* + +----------------------------------------------------------------------+ + | PHP Version 5 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997-2014 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: | + | http://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 "zend.h" +#include "phpdbg.h" +#include "phpdbg_utils.h" +#include "phpdbg_frame.h" +#include "phpdbg_list.h" + +ZEND_EXTERN_MODULE_GLOBALS(phpdbg); + +void phpdbg_restore_frame(TSRMLS_D) /* {{{ */ +{ + if (PHPDBG_FRAME(num) == 0) { + return; + } + + PHPDBG_FRAME(num) = 0; + + /* move things back */ + EG(current_execute_data) = PHPDBG_FRAME(execute_data); + + EG(opline_ptr) = &PHPDBG_EX(opline); + EG(active_op_array) = PHPDBG_EX(op_array); + EG(return_value_ptr_ptr) = PHPDBG_EX(original_return_value); + EG(active_symbol_table) = PHPDBG_EX(symbol_table); + EG(This) = PHPDBG_EX(current_this); + EG(scope) = PHPDBG_EX(current_scope); + EG(called_scope) = PHPDBG_EX(current_called_scope); +} /* }}} */ + +void phpdbg_switch_frame(int frame TSRMLS_DC) /* {{{ */ +{ + zend_execute_data *execute_data = PHPDBG_FRAME(num)?PHPDBG_FRAME(execute_data):EG(current_execute_data); + int i = 0; + + if (PHPDBG_FRAME(num) == frame) { + phpdbg_notice("Already in frame #%d", frame); + return; + } + + while (execute_data) { + if (i++ == frame) { + break; + } + + do { + execute_data = execute_data->prev_execute_data; + } while (execute_data && execute_data->opline == NULL); + } + + if (execute_data == NULL) { + phpdbg_error("No frame #%d", frame); + return; + } + + phpdbg_restore_frame(TSRMLS_C); + + if (frame > 0) { + PHPDBG_FRAME(num) = frame; + + /* backup things and jump back */ + PHPDBG_FRAME(execute_data) = EG(current_execute_data); + EG(current_execute_data) = execute_data; + + EG(opline_ptr) = &PHPDBG_EX(opline); + EG(active_op_array) = PHPDBG_EX(op_array); + PHPDBG_FRAME(execute_data)->original_return_value = EG(return_value_ptr_ptr); + EG(return_value_ptr_ptr) = PHPDBG_EX(original_return_value); + EG(active_symbol_table) = PHPDBG_EX(symbol_table); + EG(This) = PHPDBG_EX(current_this); + EG(scope) = PHPDBG_EX(current_scope); + EG(called_scope) = PHPDBG_EX(current_called_scope); + } + + phpdbg_notice("Switched to frame #%d", frame); + phpdbg_list_file( + zend_get_executed_filename(TSRMLS_C), + 3, + zend_get_executed_lineno(TSRMLS_C)-1, + zend_get_executed_lineno(TSRMLS_C) + TSRMLS_CC + ); +} /* }}} */ + +static void phpdbg_dump_prototype(zval **tmp TSRMLS_DC) /* {{{ */ +{ + zval **funcname, **class, **type, **args, **argstmp; + char is_class; + + zend_hash_find(Z_ARRVAL_PP(tmp), "function", sizeof("function"), + (void **)&funcname); + + if ((is_class = zend_hash_find(Z_ARRVAL_PP(tmp), + "object", sizeof("object"), (void **)&class)) == FAILURE) { + is_class = zend_hash_find(Z_ARRVAL_PP(tmp), "class", sizeof("class"), + (void **)&class); + } else { + zend_get_object_classname(*class, (const char **)&Z_STRVAL_PP(class), + (zend_uint *)&Z_STRLEN_PP(class) TSRMLS_CC); + } + + if (is_class == SUCCESS) { + zend_hash_find(Z_ARRVAL_PP(tmp), "type", sizeof("type"), (void **)&type); + } + + phpdbg_write("%s%s%s(", + is_class == FAILURE?"":Z_STRVAL_PP(class), + is_class == FAILURE?"":Z_STRVAL_PP(type), + Z_STRVAL_PP(funcname) + ); + + if (zend_hash_find(Z_ARRVAL_PP(tmp), "args", sizeof("args"), + (void **)&args) == SUCCESS) { + HashPosition iterator; + const zend_function *func = phpdbg_get_function( + Z_STRVAL_PP(funcname), is_class == FAILURE ? NULL : Z_STRVAL_PP(class) TSRMLS_CC); + const zend_arg_info *arginfo = func ? func->common.arg_info : NULL; + int j = 0, m = func ? func->common.num_args : 0; + zend_bool is_variadic = 0; + + zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(args), &iterator); + while (zend_hash_get_current_data_ex(Z_ARRVAL_PP(args), + (void **) &argstmp, &iterator) == SUCCESS) { + if (j) { + phpdbg_write(", "); + } + if (m && j < m) { +#if PHP_VERSION_ID >= 50600 + is_variadic = arginfo[j].is_variadic; +#endif + phpdbg_write("%s=%s", + arginfo[j].name, is_variadic ? "[": ""); + } + ++j; + + zend_print_flat_zval_r(*argstmp TSRMLS_CC); + zend_hash_move_forward_ex(Z_ARRVAL_PP(args), &iterator); + } + if (is_variadic) { + phpdbg_write("]"); + } + } + phpdbg_write(")"); +} + +void phpdbg_dump_backtrace(size_t num TSRMLS_DC) /* {{{ */ +{ + zval zbacktrace; + zval **tmp; + zval **file, **line; + HashPosition position; + int i = 1, limit = num; + int user_defined; + + if (limit < 0) { + phpdbg_error("Invalid backtrace size %d", limit); + } + + zend_fetch_debug_backtrace( + &zbacktrace, 0, 0, limit TSRMLS_CC); + + zend_hash_internal_pointer_reset_ex(Z_ARRVAL(zbacktrace), &position); + zend_hash_get_current_data_ex(Z_ARRVAL(zbacktrace), (void**)&tmp, &position); + while (1) { + user_defined = zend_hash_find(Z_ARRVAL_PP(tmp), "file", sizeof("file"), (void **)&file); + zend_hash_find(Z_ARRVAL_PP(tmp), "line", sizeof("line"), (void **)&line); + zend_hash_move_forward_ex(Z_ARRVAL(zbacktrace), &position); + + if (zend_hash_get_current_data_ex(Z_ARRVAL(zbacktrace), + (void**)&tmp, &position) == FAILURE) { + phpdbg_write("frame #0: {main} at %s:%ld", Z_STRVAL_PP(file), Z_LVAL_PP(line)); + break; + } + + if (user_defined == SUCCESS) { + phpdbg_write("frame #%d: ", i++); + phpdbg_dump_prototype(tmp TSRMLS_CC); + phpdbg_writeln(" at %s:%ld", Z_STRVAL_PP(file), Z_LVAL_PP(line)); + } else { + phpdbg_write(" => "); + phpdbg_dump_prototype(tmp TSRMLS_CC); + phpdbg_writeln(" (internal function)"); + } + } + + phpdbg_writeln(EMPTY); + zval_dtor(&zbacktrace); +} /* }}} */ |