mirror of
https://github.com/php/php-src.git
synced 2024-12-01 05:43:38 +08:00
c343ca4efb
This moves handling of inheritance and interface implementation from zend_compile.c into a separate zend_inheritance.c file, as this is not really related to compilation.
1807 lines
55 KiB
C
1807 lines
55 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend 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@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#define ZEND_INTENSIVE_DEBUGGING 0
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#include <stdio.h>
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#include <signal.h>
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#include "zend.h"
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#include "zend_compile.h"
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#include "zend_execute.h"
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#include "zend_API.h"
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#include "zend_ptr_stack.h"
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#include "zend_constants.h"
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#include "zend_extensions.h"
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#include "zend_ini.h"
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#include "zend_exceptions.h"
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#include "zend_interfaces.h"
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#include "zend_closures.h"
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#include "zend_generators.h"
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#include "zend_vm.h"
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#include "zend_dtrace.h"
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#include "zend_inheritance.h"
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/* Virtual current working directory support */
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#include "zend_virtual_cwd.h"
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#define _CONST_CODE 0
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#define _TMP_CODE 1
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#define _VAR_CODE 2
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#define _UNUSED_CODE 3
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#define _CV_CODE 4
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typedef int (*incdec_t)(zval *);
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#define get_zval_ptr(op_type, node, ex, should_free, type) _get_zval_ptr(op_type, node, ex, should_free, type TSRMLS_CC)
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#define get_zval_ptr_deref(op_type, node, ex, should_free, type) _get_zval_ptr_deref(op_type, node, ex, should_free, type TSRMLS_CC)
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#define get_zval_ptr_ptr(op_type, node, ex, should_free, type) _get_zval_ptr_ptr(op_type, node, ex, should_free, type TSRMLS_CC)
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#define get_zval_ptr_ptr_undef(op_type, node, ex, should_free, type) _get_zval_ptr_ptr(op_type, node, ex, should_free, type TSRMLS_CC)
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#define get_obj_zval_ptr(op_type, node, ex, should_free, type) _get_obj_zval_ptr(op_type, node, ex, should_free, type TSRMLS_CC)
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#define get_obj_zval_ptr_ptr(op_type, node, ex, should_free, type) _get_obj_zval_ptr_ptr(op_type, node, ex, should_free, type TSRMLS_CC)
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/* Prototypes */
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static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
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static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
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static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
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#define RETURN_VALUE_USED(opline) (!((opline)->result_type & EXT_TYPE_UNUSED))
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static ZEND_FUNCTION(pass)
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{
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}
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static const zend_internal_function zend_pass_function = {
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ZEND_INTERNAL_FUNCTION, /* type */
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0, /* fn_flags */
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NULL, /* name */
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NULL, /* scope */
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NULL, /* prototype */
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0, /* num_args */
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0, /* required_num_args */
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NULL, /* arg_info */
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ZEND_FN(pass), /* handler */
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NULL /* module */
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};
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#undef zval_ptr_dtor
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#define zval_ptr_dtor(zv) i_zval_ptr_dtor(zv ZEND_FILE_LINE_CC TSRMLS_CC)
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#define PZVAL_LOCK(z) if (Z_REFCOUNTED_P(z)) Z_ADDREF_P((z))
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#define SELECTIVE_PZVAL_LOCK(pzv, opline) if (RETURN_VALUE_USED(opline)) { PZVAL_LOCK(pzv); }
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#define READY_TO_DESTROY(zv) \
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(zv && Z_REFCOUNTED_P(zv) && Z_REFCOUNT_P(zv) == 1)
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#define EXTRACT_ZVAL_PTR(zv) do { \
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zval *__zv = (zv); \
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if (Z_TYPE_P(__zv) == IS_INDIRECT) { \
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ZVAL_COPY(__zv, Z_INDIRECT_P(__zv)); \
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} \
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} while (0)
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#define FREE_OP(should_free) \
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if (should_free.var) { \
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if ((zend_uintptr_t)should_free.var & 1L) { \
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zval_dtor((zval*)((zend_uintptr_t)should_free.var & ~1L)); \
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} else { \
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zval_ptr_dtor_nogc(should_free.var); \
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} \
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}
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#define FREE_OP_IF_VAR(should_free) \
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if (should_free.var != NULL && (((zend_uintptr_t)should_free.var & 1L) == 0)) { \
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zval_ptr_dtor_nogc(should_free.var); \
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}
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#define FREE_OP_VAR_PTR(should_free) \
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if (should_free.var) { \
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zval_ptr_dtor_nogc(should_free.var); \
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}
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#define TMP_FREE(z) (zval*)(((zend_uintptr_t)(z)) | 1L)
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#define IS_TMP_FREE(should_free) ((zend_uintptr_t)should_free.var & 1L)
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/* End of zend_execute_locks.h */
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#define CV_DEF_OF(i) (EX(func)->op_array.vars[i])
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#define CTOR_CALL_BIT 0x1
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#define CTOR_USED_BIT 0x2
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#define IS_CTOR_CALL(ce) (((zend_uintptr_t)(ce)) & CTOR_CALL_BIT)
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#define IS_CTOR_USED(ce) (((zend_uintptr_t)(ce)) & CTOR_USED_BIT)
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#define ENCODE_CTOR(ce, used) \
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((zend_class_entry*)(((zend_uintptr_t)(ce)) | CTOR_CALL_BIT | ((used) ? CTOR_USED_BIT : 0)))
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#define DECODE_CTOR(ce) \
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((zend_class_entry*)(((zend_uintptr_t)(ce)) & ~(CTOR_CALL_BIT|CTOR_USED_BIT)))
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#undef EX
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#define EX(element) execute_data->element
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ZEND_API zval* zend_get_compiled_variable_value(const zend_execute_data *execute_data, uint32_t var)
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{
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return EX_VAR(var);
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}
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static zend_always_inline zval *_get_zval_ptr_tmp(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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should_free->var = ret;
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ZEND_ASSERT(Z_TYPE_P(ret) != IS_REFERENCE);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_var(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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should_free->var = ret;
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_var_deref(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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should_free->var = ret;
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ZVAL_DEREF(ret);
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return ret;
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}
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static zend_never_inline zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type, const zend_execute_data *execute_data TSRMLS_DC)
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{
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zend_string *cv;
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switch (type) {
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case BP_VAR_R:
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case BP_VAR_UNSET:
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cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
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zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
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/* break missing intentionally */
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case BP_VAR_IS:
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ptr = &EG(uninitialized_zval);
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break;
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case BP_VAR_RW:
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cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
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zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
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/* break missing intentionally */
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case BP_VAR_W:
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ZVAL_NULL(ptr);
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break;
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}
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return ptr;
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}
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static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_R(zval *ptr, uint32_t var, const zend_execute_data *execute_data TSRMLS_DC)
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{
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zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
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zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
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return &EG(uninitialized_zval);
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}
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static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_UNSET(zval *ptr, uint32_t var, const zend_execute_data *execute_data TSRMLS_DC)
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{
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zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
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zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
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return &EG(uninitialized_zval);
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}
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static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_RW(zval *ptr, uint32_t var, const zend_execute_data *execute_data TSRMLS_DC)
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{
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zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
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ZVAL_NULL(ptr);
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zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
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return ptr;
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}
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static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_W(zval *ptr, uint32_t var, const zend_execute_data *execute_data TSRMLS_DC)
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{
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ZVAL_NULL(ptr);
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return ptr;
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}
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static zend_always_inline zval *_get_zval_ptr_cv(const zend_execute_data *execute_data, uint32_t var, int type TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup(ret, var, type, execute_data TSRMLS_CC);
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}
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_deref(const zend_execute_data *execute_data, uint32_t var, int type TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup(ret, var, type, execute_data TSRMLS_CC);
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}
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ZVAL_DEREF(ret);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_R(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup_BP_VAR_R(ret, var, execute_data TSRMLS_CC);
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}
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_R(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup_BP_VAR_R(ret, var, execute_data TSRMLS_CC);
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}
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ZVAL_DEREF(ret);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_UNSET(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var, execute_data TSRMLS_CC);
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}
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_UNSET(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var, execute_data TSRMLS_CC);
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}
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ZVAL_DEREF(ret);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_IS(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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ZVAL_DEREF(ret);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup_BP_VAR_RW(ret, var, execute_data TSRMLS_CC);
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}
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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return _get_zval_cv_lookup_BP_VAR_RW(ret, var, execute_data TSRMLS_CC);
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}
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ZVAL_DEREF(ret);
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (Z_TYPE_P(ret) == IS_UNDEF) {
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return _get_zval_cv_lookup_BP_VAR_W(ret, var, execute_data TSRMLS_CC);
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}
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return ret;
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}
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static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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return EX_VAR(var);
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}
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static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (Z_TYPE_P(ret) == IS_UNDEF) {
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return _get_zval_cv_lookup_BP_VAR_W(ret, var, execute_data TSRMLS_CC);
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}
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ZVAL_DEREF(ret);
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return ret;
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}
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static inline zval *_get_zval_ptr(int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type TSRMLS_DC)
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{
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zval *ret;
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switch (op_type) {
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case IS_CONST:
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should_free->var = NULL;
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return node->zv;
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break;
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case IS_TMP_VAR:
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ret = EX_VAR(node->var);
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should_free->var = TMP_FREE(ret);
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return ret;
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break;
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case IS_VAR:
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return _get_zval_ptr_var(node->var, execute_data, should_free TSRMLS_CC);
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break;
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case IS_UNUSED:
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should_free->var = NULL;
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return NULL;
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break;
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case IS_CV:
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default:
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should_free->var = NULL;
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return _get_zval_ptr_cv(execute_data, node->var, type TSRMLS_CC);
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break;
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}
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return NULL;
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}
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static inline zval *_get_zval_ptr_deref(int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type TSRMLS_DC)
|
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{
|
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zval *ret;
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|
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switch (op_type) {
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case IS_CONST:
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should_free->var = NULL;
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return node->zv;
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break;
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case IS_TMP_VAR:
|
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ret = EX_VAR(node->var);
|
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should_free->var = TMP_FREE(ret);
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return ret;
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break;
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case IS_VAR:
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return _get_zval_ptr_var_deref(node->var, execute_data, should_free TSRMLS_CC);
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break;
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case IS_UNUSED:
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should_free->var = NULL;
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return NULL;
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break;
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case IS_CV:
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default:
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should_free->var = NULL;
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return _get_zval_ptr_cv_deref(execute_data, node->var, type TSRMLS_CC);
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break;
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}
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return NULL;
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}
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static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free TSRMLS_DC)
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{
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zval *ret = EX_VAR(var);
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if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) {
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should_free->var = NULL;
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return Z_INDIRECT_P(ret);
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} else if (!Z_REFCOUNTED_P(ret) || Z_REFCOUNT_P(ret) == 1) {
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should_free->var = ret;
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return ret;
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} else {
|
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Z_DELREF_P(ret);
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should_free->var = NULL;
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return ret;
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}
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}
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|
|
static inline zval *_get_zval_ptr_ptr(int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type TSRMLS_DC)
|
|
{
|
|
if (op_type == IS_CV) {
|
|
should_free->var = NULL;
|
|
return _get_zval_ptr_cv(execute_data, node->var, type TSRMLS_CC);
|
|
} else /* if (op_type == IS_VAR) */ {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_ptr_var(node->var, execute_data, should_free TSRMLS_CC);
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_obj_zval_ptr_unused(TSRMLS_D)
|
|
{
|
|
if (EXPECTED(Z_OBJ(EG(This)) != NULL)) {
|
|
return &EG(This);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static inline zval *_get_obj_zval_ptr(int op_type, znode_op *op, const zend_execute_data *execute_data, zend_free_op *should_free, int type TSRMLS_DC)
|
|
{
|
|
if (op_type == IS_UNUSED) {
|
|
if (EXPECTED(Z_OBJ(EG(This)) != NULL)) {
|
|
should_free->var = NULL;
|
|
return &EG(This);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
|
|
}
|
|
}
|
|
return get_zval_ptr(op_type, op, execute_data, should_free, type);
|
|
}
|
|
|
|
static inline zval *_get_obj_zval_ptr_ptr(int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type TSRMLS_DC)
|
|
{
|
|
if (op_type == IS_UNUSED) {
|
|
if (EXPECTED(Z_OBJ(EG(This)) != NULL)) {
|
|
should_free->var = NULL;
|
|
return &EG(This);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
|
|
}
|
|
}
|
|
return get_zval_ptr_ptr(op_type, node, execute_data, should_free, type);
|
|
}
|
|
|
|
static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr TSRMLS_DC)
|
|
{
|
|
if (EXPECTED(variable_ptr != value_ptr)) {
|
|
ZVAL_MAKE_REF(value_ptr);
|
|
Z_ADDREF_P(value_ptr);
|
|
zval_ptr_dtor(variable_ptr);
|
|
ZVAL_REF(variable_ptr, Z_REF_P(value_ptr));
|
|
} else {
|
|
ZVAL_MAKE_REF(variable_ptr);
|
|
}
|
|
}
|
|
|
|
/* this should modify object only if it's empty */
|
|
static inline zval* make_real_object(zval *object_ptr TSRMLS_DC)
|
|
{
|
|
zval *object = object_ptr;
|
|
|
|
ZVAL_DEREF(object);
|
|
if (UNEXPECTED(Z_TYPE_P(object) != IS_OBJECT)) {
|
|
if (Z_TYPE_P(object) == IS_NULL
|
|
|| Z_TYPE_P(object) == IS_FALSE
|
|
|| (Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0)) {
|
|
zval_ptr_dtor_nogc(object);
|
|
object_init(object);
|
|
zend_error(E_WARNING, "Creating default object from empty value");
|
|
}
|
|
}
|
|
return object;
|
|
}
|
|
|
|
ZEND_API char * zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info, zend_ulong fetch_type, char **class_name, zend_class_entry **pce TSRMLS_DC)
|
|
{
|
|
zend_string *key;
|
|
ALLOCA_FLAG(use_heap);
|
|
|
|
STR_ALLOCA_INIT(key, cur_arg_info->class_name, cur_arg_info->class_name_len, use_heap);
|
|
*pce = zend_fetch_class(key, (fetch_type | ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD) TSRMLS_CC);
|
|
STR_ALLOCA_FREE(key, use_heap);
|
|
|
|
*class_name = (*pce) ? (*pce)->name->val : (char*)cur_arg_info->class_name;
|
|
if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
|
|
return "implement interface ";
|
|
} else {
|
|
return "be an instance of ";
|
|
}
|
|
}
|
|
|
|
ZEND_API void zend_verify_arg_error(int error_type, const zend_function *zf, uint32_t arg_num, const char *need_msg, const char *need_kind, const char *given_msg, const char *given_kind, zval *arg TSRMLS_DC)
|
|
{
|
|
zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
|
|
const char *fname = zf->common.function_name->val;
|
|
const char *fsep;
|
|
const char *fclass;
|
|
zval old_arg;
|
|
|
|
if (zf->common.scope) {
|
|
fsep = "::";
|
|
fclass = zf->common.scope->name->val;
|
|
} else {
|
|
fsep = "";
|
|
fclass = "";
|
|
}
|
|
|
|
if (arg && zf->common.type == ZEND_USER_FUNCTION) {
|
|
ZVAL_COPY_VALUE(&old_arg, arg);
|
|
ZVAL_UNDEF(arg);
|
|
}
|
|
|
|
if (zf->common.type == ZEND_USER_FUNCTION && ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
|
|
zend_error(error_type, "Argument %d passed to %s%s%s() must %s%s, %s%s given, called in %s on line %d and defined", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind, ptr->func->op_array.filename->val, ptr->opline->lineno);
|
|
} else {
|
|
zend_error(error_type, "Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
|
|
}
|
|
|
|
if (arg && zf->common.type == ZEND_USER_FUNCTION) {
|
|
ZVAL_COPY_VALUE(arg, &old_arg);
|
|
}
|
|
}
|
|
|
|
static void zend_verify_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zend_ulong fetch_type TSRMLS_DC)
|
|
{
|
|
zend_arg_info *cur_arg_info;
|
|
char *need_msg;
|
|
zend_class_entry *ce;
|
|
|
|
if (UNEXPECTED(!zf->common.arg_info)) {
|
|
return;
|
|
}
|
|
|
|
if (EXPECTED(arg_num <= zf->common.num_args)) {
|
|
cur_arg_info = &zf->common.arg_info[arg_num-1];
|
|
} else if (zf->common.fn_flags & ZEND_ACC_VARIADIC) {
|
|
cur_arg_info = &zf->common.arg_info[zf->common.num_args-1];
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
if (cur_arg_info->class_name) {
|
|
char *class_name;
|
|
|
|
ZVAL_DEREF(arg);
|
|
if (Z_TYPE_P(arg) == IS_OBJECT) {
|
|
need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
|
|
if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce TSRMLS_CC)) {
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, "instance of ", Z_OBJCE_P(arg)->name->val, arg TSRMLS_CC);
|
|
}
|
|
} else if (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null) {
|
|
need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, zend_zval_type_name(arg), "", arg TSRMLS_CC);
|
|
}
|
|
} else if (cur_arg_info->type_hint) {
|
|
if (cur_arg_info->type_hint == IS_ARRAY) {
|
|
ZVAL_DEREF(arg);
|
|
if (Z_TYPE_P(arg) != IS_ARRAY && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be of the type array", "", zend_zval_type_name(arg), "", arg TSRMLS_CC);
|
|
}
|
|
} else if (cur_arg_info->type_hint == IS_CALLABLE) {
|
|
if (!zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL TSRMLS_CC) && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be callable", "", zend_zval_type_name(arg), "", arg TSRMLS_CC);
|
|
}
|
|
#if ZEND_DEBUG
|
|
} else {
|
|
zend_error(E_ERROR, "Unknown typehint");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline int zend_verify_missing_arg_type(zend_function *zf, uint32_t arg_num, zend_ulong fetch_type TSRMLS_DC)
|
|
{
|
|
zend_arg_info *cur_arg_info;
|
|
char *need_msg;
|
|
zend_class_entry *ce;
|
|
|
|
if (UNEXPECTED(!zf->common.arg_info)) {
|
|
return 1;
|
|
}
|
|
|
|
if (EXPECTED(arg_num <= zf->common.num_args)) {
|
|
cur_arg_info = &zf->common.arg_info[arg_num-1];
|
|
} else if (zf->common.fn_flags & ZEND_ACC_VARIADIC) {
|
|
cur_arg_info = &zf->common.arg_info[zf->common.num_args-1];
|
|
} else {
|
|
return 1;
|
|
}
|
|
|
|
if (cur_arg_info->class_name) {
|
|
char *class_name;
|
|
|
|
need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, "none", "", NULL TSRMLS_CC);
|
|
return 0;
|
|
} else if (cur_arg_info->type_hint) {
|
|
if (cur_arg_info->type_hint == IS_ARRAY) {
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be of the type array", "", "none", "", NULL TSRMLS_CC);
|
|
} else if (cur_arg_info->type_hint == IS_CALLABLE) {
|
|
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be callable", "", "none", "", NULL TSRMLS_CC);
|
|
#if ZEND_DEBUG
|
|
} else {
|
|
zend_error(E_ERROR, "Unknown typehint");
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void zend_verify_missing_arg(zend_execute_data *execute_data, uint32_t arg_num TSRMLS_DC)
|
|
{
|
|
if (EXPECTED(!(EX(func)->common.fn_flags & ZEND_ACC_HAS_TYPE_HINTS)) ||
|
|
zend_verify_missing_arg_type(EX(func), arg_num, EX(opline)->extended_value TSRMLS_CC)) {
|
|
const char *class_name = EX(func)->common.scope ? EX(func)->common.scope->name->val : "";
|
|
const char *space = EX(func)->common.scope ? "::" : "";
|
|
const char *func_name = EX(func)->common.function_name ? EX(func)->common.function_name->val : "main";
|
|
zend_execute_data *ptr = EX(prev_execute_data);
|
|
|
|
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
|
|
zend_error(E_WARNING, "Missing argument %u for %s%s%s(), called in %s on line %d and defined", arg_num, class_name, space, func_name, ptr->func->op_array.filename->val, ptr->opline->lineno);
|
|
} else {
|
|
zend_error(E_WARNING, "Missing argument %u for %s%s%s()", arg_num, class_name, space, func_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline void zend_assign_to_object(zval *retval, zval *object_ptr, zval *property_name, int value_type, const znode_op *value_op, const zend_execute_data *execute_data, int opcode, void **cache_slot TSRMLS_DC)
|
|
{
|
|
zend_free_op free_value;
|
|
zval *value = get_zval_ptr(value_type, value_op, execute_data, &free_value, BP_VAR_R);
|
|
zval tmp;
|
|
zval *object = object_ptr;
|
|
|
|
ZVAL_DEREF(object);
|
|
if (Z_TYPE_P(object) != IS_OBJECT) {
|
|
if (object == &EG(error_zval)) {
|
|
if (retval) {
|
|
ZVAL_NULL(retval);
|
|
}
|
|
FREE_OP(free_value);
|
|
return;
|
|
}
|
|
if (Z_TYPE_P(object) == IS_NULL ||
|
|
Z_TYPE_P(object) == IS_FALSE ||
|
|
(Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0)) {
|
|
zend_object *obj;
|
|
|
|
zval_ptr_dtor(object);
|
|
object_init(object);
|
|
Z_ADDREF_P(object);
|
|
obj = Z_OBJ_P(object);
|
|
zend_error(E_WARNING, "Creating default object from empty value");
|
|
if (GC_REFCOUNT(obj) == 1) {
|
|
/* the enclosing container was deleted, obj is unreferenced */
|
|
if (retval) {
|
|
ZVAL_NULL(retval);
|
|
}
|
|
FREE_OP(free_value);
|
|
OBJ_RELEASE(obj);
|
|
return;
|
|
}
|
|
Z_DELREF_P(object);
|
|
} else {
|
|
zend_error(E_WARNING, "Attempt to assign property of non-object");
|
|
if (retval) {
|
|
ZVAL_NULL(retval);
|
|
}
|
|
FREE_OP(free_value);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* separate our value if necessary */
|
|
if (value_type == IS_TMP_VAR) {
|
|
ZVAL_COPY_VALUE(&tmp, value);
|
|
value = &tmp;
|
|
} else if (value_type == IS_CONST) {
|
|
if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
|
|
ZVAL_COPY_VALUE(&tmp, value);
|
|
zval_copy_ctor_func(&tmp);
|
|
value = &tmp;
|
|
}
|
|
} else if (Z_REFCOUNTED_P(value)) {
|
|
Z_ADDREF_P(value);
|
|
}
|
|
|
|
if (opcode == ZEND_ASSIGN_OBJ) {
|
|
if (!Z_OBJ_HT_P(object)->write_property) {
|
|
zend_error(E_WARNING, "Attempt to assign property of non-object");
|
|
if (retval) {
|
|
ZVAL_NULL(retval);
|
|
}
|
|
if (value_type == IS_CONST) {
|
|
zval_ptr_dtor(value);
|
|
}
|
|
FREE_OP(free_value);
|
|
return;
|
|
}
|
|
Z_OBJ_HT_P(object)->write_property(object, property_name, value, cache_slot TSRMLS_CC);
|
|
} else {
|
|
/* Note: property_name in this case is really the array index! */
|
|
if (!Z_OBJ_HT_P(object)->write_dimension) {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object as array");
|
|
}
|
|
Z_OBJ_HT_P(object)->write_dimension(object, property_name, value TSRMLS_CC);
|
|
}
|
|
|
|
if (retval && !EG(exception)) {
|
|
ZVAL_COPY(retval, value);
|
|
}
|
|
zval_ptr_dtor(value);
|
|
FREE_OP_IF_VAR(free_value);
|
|
}
|
|
|
|
static void zend_assign_to_string_offset(zval *str, zend_long offset, zval *value, int value_type, zval *result TSRMLS_DC)
|
|
{
|
|
zend_string *old_str;
|
|
|
|
if (offset < 0) {
|
|
zend_error(E_WARNING, "Illegal string offset: " ZEND_LONG_FMT, offset);
|
|
zend_string_release(Z_STR_P(str));
|
|
if (result) {
|
|
ZVAL_NULL(result);
|
|
}
|
|
return;
|
|
}
|
|
|
|
old_str = Z_STR_P(str);
|
|
if ((size_t)offset >= Z_STRLEN_P(str)) {
|
|
zend_long old_len = Z_STRLEN_P(str);
|
|
Z_STR_P(str) = zend_string_realloc(Z_STR_P(str), offset + 1, 0);
|
|
Z_TYPE_INFO_P(str) = IS_STRING_EX;
|
|
memset(Z_STRVAL_P(str) + old_len, ' ', offset - old_len);
|
|
Z_STRVAL_P(str)[offset+1] = 0;
|
|
} else if (!Z_REFCOUNTED_P(str)) {
|
|
Z_STR_P(str) = zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0);
|
|
Z_TYPE_INFO_P(str) = IS_STRING_EX;
|
|
}
|
|
|
|
if (Z_TYPE_P(value) != IS_STRING) {
|
|
zend_string *tmp = zval_get_string(value);
|
|
|
|
Z_STRVAL_P(str)[offset] = tmp->val[0];
|
|
zend_string_release(tmp);
|
|
} else {
|
|
Z_STRVAL_P(str)[offset] = Z_STRVAL_P(value)[0];
|
|
if (value_type == IS_TMP_VAR) {
|
|
/* we can safely free final_value here
|
|
* because separation is done only
|
|
* in case value_type == IS_VAR */
|
|
zval_dtor(value);
|
|
}
|
|
}
|
|
/*
|
|
* the value of an assignment to a string offset is undefined
|
|
T(result->u.var).var = &T->str_offset.str;
|
|
*/
|
|
|
|
zend_string_release(old_str);
|
|
if (result) {
|
|
zend_uchar c = (zend_uchar)Z_STRVAL_P(str)[offset];
|
|
|
|
if (CG(one_char_string)[c]) {
|
|
ZVAL_INTERNED_STR(result, CG(one_char_string)[c]);
|
|
} else {
|
|
ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(str) + offset, 1, 0));
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval* zend_assign_to_variable(zval *variable_ptr, zval *value, zend_uchar value_type TSRMLS_DC)
|
|
{
|
|
do {
|
|
if (UNEXPECTED(Z_REFCOUNTED_P(variable_ptr))) {
|
|
zend_refcounted *garbage;
|
|
|
|
if (Z_ISREF_P(variable_ptr)) {
|
|
variable_ptr = Z_REFVAL_P(variable_ptr);
|
|
if (EXPECTED(!Z_REFCOUNTED_P(variable_ptr))) {
|
|
break;
|
|
}
|
|
}
|
|
if (Z_TYPE_P(variable_ptr) == IS_OBJECT &&
|
|
UNEXPECTED(Z_OBJ_HANDLER_P(variable_ptr, set) != NULL)) {
|
|
Z_OBJ_HANDLER_P(variable_ptr, set)(variable_ptr, value TSRMLS_CC);
|
|
return variable_ptr;
|
|
}
|
|
if ((value_type & (IS_VAR|IS_CV)) && variable_ptr == value) {
|
|
return variable_ptr;
|
|
}
|
|
garbage = Z_COUNTED_P(variable_ptr);
|
|
if (GC_REFCOUNT(garbage) == 1) {
|
|
ZVAL_COPY_VALUE(variable_ptr, value);
|
|
if (value_type == IS_CONST) {
|
|
/* IS_CONST can't be IS_OBJECT, IS_RESOURCE or IS_REFERENCE */
|
|
if (UNEXPECTED(Z_OPT_COPYABLE_P(variable_ptr))) {
|
|
zval_copy_ctor_func(variable_ptr);
|
|
}
|
|
} else if (value_type != IS_TMP_VAR) {
|
|
if (UNEXPECTED(Z_OPT_REFCOUNTED_P(variable_ptr))) {
|
|
Z_ADDREF_P(variable_ptr);
|
|
}
|
|
}
|
|
_zval_dtor_func(garbage ZEND_FILE_LINE_CC);
|
|
return variable_ptr;
|
|
} else { /* we need to split */
|
|
GC_REFCOUNT(garbage)--;
|
|
/* optimized version of GC_ZVAL_CHECK_POSSIBLE_ROOT(variable_ptr) */
|
|
if ((Z_COLLECTABLE_P(variable_ptr)) &&
|
|
UNEXPECTED(!GC_INFO(garbage))) {
|
|
gc_possible_root(garbage TSRMLS_CC);
|
|
}
|
|
}
|
|
}
|
|
} while (0);
|
|
|
|
ZVAL_COPY_VALUE(variable_ptr, value);
|
|
if (value_type == IS_CONST) {
|
|
/* IS_CONST can't be IS_OBJECT, IS_RESOURCE or IS_REFERENCE */
|
|
if (UNEXPECTED(Z_OPT_COPYABLE_P(variable_ptr))) {
|
|
zval_copy_ctor_func(variable_ptr);
|
|
}
|
|
} else if (value_type != IS_TMP_VAR) {
|
|
if (UNEXPECTED(Z_OPT_REFCOUNTED_P(variable_ptr))) {
|
|
Z_ADDREF_P(variable_ptr);
|
|
}
|
|
}
|
|
return variable_ptr;
|
|
}
|
|
|
|
/* Utility Functions for Extensions */
|
|
static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
|
|
{
|
|
if (extension->statement_handler) {
|
|
extension->statement_handler(op_array);
|
|
}
|
|
}
|
|
|
|
|
|
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
|
|
{
|
|
if (extension->fcall_begin_handler) {
|
|
extension->fcall_begin_handler(op_array);
|
|
}
|
|
}
|
|
|
|
|
|
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
|
|
{
|
|
if (extension->fcall_end_handler) {
|
|
extension->fcall_end_handler(op_array);
|
|
}
|
|
}
|
|
|
|
|
|
static zend_always_inline HashTable *zend_get_target_symbol_table(zend_execute_data *execute_data, int fetch_type TSRMLS_DC)
|
|
{
|
|
HashTable *ht;
|
|
|
|
if (EXPECTED(fetch_type == ZEND_FETCH_GLOBAL_LOCK) ||
|
|
EXPECTED(fetch_type == ZEND_FETCH_GLOBAL)) {
|
|
ht = &EG(symbol_table).ht;
|
|
} else if (EXPECTED(fetch_type == ZEND_FETCH_STATIC)) {
|
|
ZEND_ASSERT(EX(func)->op_array.static_variables != NULL);
|
|
ht = EX(func)->op_array.static_variables;
|
|
} else {
|
|
ZEND_ASSERT(fetch_type == ZEND_FETCH_LOCAL);
|
|
if (!EX(symbol_table)) {
|
|
zend_rebuild_symbol_table(TSRMLS_C);
|
|
}
|
|
ht = &EX(symbol_table)->ht;
|
|
}
|
|
return ht;
|
|
}
|
|
|
|
static zend_always_inline zval *zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int dim_type, int type TSRMLS_DC)
|
|
{
|
|
zval *retval;
|
|
zend_string *offset_key;
|
|
zend_ulong hval;
|
|
|
|
if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) {
|
|
hval = Z_LVAL_P(dim);
|
|
num_index:
|
|
retval = zend_hash_index_find(ht, hval);
|
|
if (retval == NULL) {
|
|
switch (type) {
|
|
case BP_VAR_R:
|
|
zend_error(E_NOTICE,"Undefined offset: " ZEND_ULONG_FMT, hval);
|
|
/* break missing intentionally */
|
|
case BP_VAR_UNSET:
|
|
case BP_VAR_IS:
|
|
retval = &EG(uninitialized_zval);
|
|
break;
|
|
case BP_VAR_RW:
|
|
zend_error(E_NOTICE,"Undefined offset: " ZEND_ULONG_FMT, hval);
|
|
/* break missing intentionally */
|
|
case BP_VAR_W:
|
|
retval = zend_hash_index_add_new(ht, hval, &EG(uninitialized_zval));
|
|
break;
|
|
}
|
|
}
|
|
} else if (EXPECTED(Z_TYPE_P(dim) == IS_STRING)) {
|
|
offset_key = Z_STR_P(dim);
|
|
if (dim_type != IS_CONST) {
|
|
if (ZEND_HANDLE_NUMERIC(offset_key, hval)) {
|
|
goto num_index;
|
|
}
|
|
}
|
|
str_index:
|
|
retval = zend_hash_find(ht, offset_key);
|
|
if (retval) {
|
|
/* support for $GLOBALS[...] */
|
|
if (UNEXPECTED(Z_TYPE_P(retval) == IS_INDIRECT)) {
|
|
retval = Z_INDIRECT_P(retval);
|
|
if (UNEXPECTED(Z_TYPE_P(retval) == IS_UNDEF)) {
|
|
switch (type) {
|
|
case BP_VAR_R:
|
|
zend_error(E_NOTICE, "Undefined index: %s", offset_key->val);
|
|
/* break missing intentionally */
|
|
case BP_VAR_UNSET:
|
|
case BP_VAR_IS:
|
|
retval = &EG(uninitialized_zval);
|
|
break;
|
|
case BP_VAR_RW:
|
|
zend_error(E_NOTICE,"Undefined index: %s", offset_key->val);
|
|
/* break missing intentionally */
|
|
case BP_VAR_W:
|
|
ZVAL_NULL(retval);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
switch (type) {
|
|
case BP_VAR_R:
|
|
zend_error(E_NOTICE, "Undefined index: %s", offset_key->val);
|
|
/* break missing intentionally */
|
|
case BP_VAR_UNSET:
|
|
case BP_VAR_IS:
|
|
retval = &EG(uninitialized_zval);
|
|
break;
|
|
case BP_VAR_RW:
|
|
zend_error(E_NOTICE,"Undefined index: %s", offset_key->val);
|
|
/* break missing intentionally */
|
|
case BP_VAR_W:
|
|
retval = zend_hash_add_new(ht, offset_key, &EG(uninitialized_zval));
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
switch (Z_TYPE_P(dim)) {
|
|
case IS_NULL:
|
|
offset_key = STR_EMPTY_ALLOC();
|
|
goto str_index;
|
|
case IS_DOUBLE:
|
|
hval = zend_dval_to_lval(Z_DVAL_P(dim));
|
|
goto num_index;
|
|
case IS_RESOURCE:
|
|
zend_error(E_STRICT, "Resource ID#%pd used as offset, casting to integer (%pd)", Z_RES_HANDLE_P(dim), Z_RES_HANDLE_P(dim));
|
|
hval = Z_RES_HANDLE_P(dim);
|
|
goto num_index;
|
|
case IS_FALSE:
|
|
hval = 0;
|
|
goto num_index;
|
|
case IS_TRUE:
|
|
hval = 1;
|
|
goto num_index;
|
|
default:
|
|
zend_error(E_WARNING, "Illegal offset type");
|
|
retval = (type == BP_VAR_W || type == BP_VAR_RW) ?
|
|
&EG(error_zval) : &EG(uninitialized_zval);
|
|
}
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
static zend_always_inline zval *zend_fetch_dimension_address(zval *result, zval *container_ptr, zval *dim, int dim_type, int type, int is_ref, int allow_str_offset TSRMLS_DC)
|
|
{
|
|
zval *retval;
|
|
zval *container = container_ptr;
|
|
|
|
ZVAL_DEREF(container);
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
|
|
SEPARATE_ARRAY(container);
|
|
fetch_from_array:
|
|
if (dim == NULL) {
|
|
retval = zend_hash_next_index_insert(Z_ARRVAL_P(container), &EG(uninitialized_zval));
|
|
if (retval == NULL) {
|
|
zend_error(E_WARNING, "Cannot add element to the array as the next element is already occupied");
|
|
retval = &EG(error_zval);
|
|
}
|
|
} else {
|
|
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type TSRMLS_CC);
|
|
}
|
|
if (is_ref) {
|
|
ZVAL_MAKE_REF(retval);
|
|
Z_ADDREF_P(retval);
|
|
ZVAL_REF(result, Z_REF_P(retval));
|
|
} else {
|
|
ZVAL_INDIRECT(result, retval);
|
|
}
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
|
|
zend_long offset;
|
|
|
|
if (type != BP_VAR_UNSET && UNEXPECTED(Z_STRLEN_P(container) == 0)) {
|
|
zval_dtor(container);
|
|
convert_to_array:
|
|
ZVAL_NEW_ARR(container);
|
|
zend_hash_init(Z_ARRVAL_P(container), 8, NULL, ZVAL_PTR_DTOR, 0);
|
|
goto fetch_from_array;
|
|
}
|
|
|
|
if (dim == NULL) {
|
|
zend_error_noreturn(E_ERROR, "[] operator not supported for strings");
|
|
}
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
|
|
switch(Z_TYPE_P(dim)) {
|
|
case IS_STRING:
|
|
if (IS_LONG == is_numeric_string(Z_STRVAL_P(dim), Z_STRLEN_P(dim), NULL, NULL, -1)) {
|
|
break;
|
|
}
|
|
if (type != BP_VAR_UNSET) {
|
|
zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim));
|
|
}
|
|
break;
|
|
case IS_DOUBLE:
|
|
case IS_NULL:
|
|
case IS_FALSE:
|
|
case IS_TRUE:
|
|
zend_error(E_NOTICE, "String offset cast occurred");
|
|
break;
|
|
default:
|
|
zend_error(E_WARNING, "Illegal offset type");
|
|
break;
|
|
}
|
|
|
|
offset = zval_get_long(dim);
|
|
} else {
|
|
offset = Z_LVAL_P(dim);
|
|
}
|
|
|
|
if (allow_str_offset) {
|
|
if (Z_REFCOUNTED_P(container)) {
|
|
if (Z_REFCOUNT_P(container) > 1) {
|
|
Z_DELREF_P(container);
|
|
zval_copy_ctor_func(container);
|
|
}
|
|
Z_ADDREF_P(container);
|
|
}
|
|
ZVAL_LONG(result, offset);
|
|
return container; /* assignment to string offset */
|
|
} else {
|
|
ZVAL_INDIRECT(result, NULL); /* wrong string offset */
|
|
}
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
|
|
if (!Z_OBJ_HT_P(container)->read_dimension) {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object as array");
|
|
} else {
|
|
retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result TSRMLS_CC);
|
|
|
|
if (UNEXPECTED(retval == &EG(uninitialized_zval))) {
|
|
zend_class_entry *ce = Z_OBJCE_P(container);
|
|
|
|
ZVAL_NULL(result);
|
|
zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ce->name->val);
|
|
} else if (retval && Z_TYPE_P(retval) != IS_UNDEF) {
|
|
if (!Z_ISREF_P(retval)) {
|
|
if (Z_REFCOUNTED_P(retval) &&
|
|
Z_REFCOUNT_P(retval) > 1) {
|
|
if (Z_TYPE_P(retval) != IS_OBJECT) {
|
|
Z_DELREF_P(retval);
|
|
ZVAL_DUP(result, retval);
|
|
retval = result;
|
|
} else {
|
|
ZVAL_COPY(result, retval);
|
|
retval = result;
|
|
}
|
|
}
|
|
if (Z_TYPE_P(retval) != IS_OBJECT) {
|
|
zend_class_entry *ce = Z_OBJCE_P(container);
|
|
zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ce->name->val);
|
|
}
|
|
}
|
|
if (result != retval) {
|
|
if (is_ref) {
|
|
ZVAL_MAKE_REF(retval);
|
|
Z_ADDREF_P(retval);
|
|
ZVAL_REF(result, Z_REF_P(retval));
|
|
} else {
|
|
ZVAL_INDIRECT(result, retval);
|
|
}
|
|
}
|
|
} else {
|
|
ZVAL_INDIRECT(result, &EG(error_zval));
|
|
}
|
|
}
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_NULL)) {
|
|
if (container == &EG(error_zval)) {
|
|
ZVAL_INDIRECT(result, &EG(error_zval));
|
|
} else if (type != BP_VAR_UNSET) {
|
|
goto convert_to_array;
|
|
} else {
|
|
/* for read-mode only */
|
|
ZVAL_NULL(result);
|
|
}
|
|
} else {
|
|
if (type != BP_VAR_UNSET &&
|
|
Z_TYPE_P(container) == IS_FALSE) {
|
|
goto convert_to_array;
|
|
}
|
|
if (type == BP_VAR_UNSET) {
|
|
zend_error(E_WARNING, "Cannot unset offset in a non-array variable");
|
|
ZVAL_NULL(result);
|
|
} else {
|
|
zend_error(E_WARNING, "Cannot use a scalar value as an array");
|
|
ZVAL_INDIRECT(result, &EG(error_zval));
|
|
}
|
|
}
|
|
return NULL; /* not an assignment to string offset */
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_W(zval *result, zval *container_ptr, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W, 0, 0 TSRMLS_CC);
|
|
}
|
|
|
|
static zend_never_inline zval *zend_fetch_dimension_address_W_str(zval *result, zval *container_ptr, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
return zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W, 0, 1 TSRMLS_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_W_ref(zval *result, zval *container_ptr, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W, 1, 0 TSRMLS_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_RW(zval *result, zval *container_ptr, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_RW, 0, 0 TSRMLS_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_UNSET(zval *result, zval *container_ptr, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_UNSET, 0, 0 TSRMLS_CC);
|
|
}
|
|
|
|
static zend_always_inline void zend_fetch_dimension_address_read(zval *result, zval *container, zval *dim, int dim_type, int type TSRMLS_DC)
|
|
{
|
|
zval *retval;
|
|
|
|
ZVAL_DEREF(container);
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
|
|
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type TSRMLS_CC);
|
|
ZVAL_COPY(result, retval);
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
|
|
zend_long offset;
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
|
|
switch(Z_TYPE_P(dim)) {
|
|
/* case IS_LONG: */
|
|
case IS_STRING:
|
|
if (IS_LONG == is_numeric_string(Z_STRVAL_P(dim), Z_STRLEN_P(dim), NULL, NULL, -1)) {
|
|
break;
|
|
}
|
|
if (type != BP_VAR_IS) {
|
|
zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim));
|
|
}
|
|
break;
|
|
case IS_DOUBLE:
|
|
case IS_NULL:
|
|
case IS_FALSE:
|
|
case IS_TRUE:
|
|
if (type != BP_VAR_IS) {
|
|
zend_error(E_NOTICE, "String offset cast occurred");
|
|
}
|
|
break;
|
|
default:
|
|
zend_error(E_WARNING, "Illegal offset type");
|
|
break;
|
|
}
|
|
|
|
offset = zval_get_long(dim);
|
|
} else {
|
|
offset = Z_LVAL_P(dim);
|
|
}
|
|
|
|
if (UNEXPECTED(offset < 0) || UNEXPECTED(Z_STRLEN_P(container) <= (size_t)offset)) {
|
|
if (type != BP_VAR_IS) {
|
|
zend_error(E_NOTICE, "Uninitialized string offset: %pd", offset);
|
|
}
|
|
ZVAL_EMPTY_STRING(result);
|
|
} else {
|
|
zend_uchar c = (zend_uchar)Z_STRVAL_P(container)[offset];
|
|
|
|
if (CG(one_char_string)[c]) {
|
|
ZVAL_INTERNED_STR(result, CG(one_char_string)[c]);
|
|
} else {
|
|
ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(container) + offset, 1, 0));
|
|
}
|
|
}
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
|
|
if (!Z_OBJ_HT_P(container)->read_dimension) {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object as array");
|
|
} else {
|
|
retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result TSRMLS_CC);
|
|
|
|
if (result) {
|
|
if (retval) {
|
|
if (result != retval) {
|
|
ZVAL_COPY(result, retval);
|
|
}
|
|
} else {
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_read_R(zval *result, zval *container, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R TSRMLS_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_read_IS(zval *result, zval *container, zval *dim, int dim_type TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS TSRMLS_CC);
|
|
}
|
|
|
|
ZEND_API void zend_fetch_dimension_by_zval(zval *result, zval *container, zval *dim TSRMLS_DC)
|
|
{
|
|
zend_fetch_dimension_address_read_R(result, container, dim, IS_TMP_VAR TSRMLS_CC);
|
|
}
|
|
|
|
static void zend_fetch_property_address(zval *result, zval *container_ptr, zval *prop_ptr, void **cache_slot, int type, int is_ref TSRMLS_DC)
|
|
{
|
|
zval *container = container_ptr;
|
|
|
|
ZVAL_DEREF(container);
|
|
if (Z_TYPE_P(container) != IS_OBJECT) {
|
|
if (container == &EG(error_zval)) {
|
|
ZVAL_INDIRECT(result, &EG(error_zval));
|
|
return;
|
|
}
|
|
|
|
/* this should modify object only if it's empty */
|
|
if (type != BP_VAR_UNSET &&
|
|
((Z_TYPE_P(container) == IS_NULL ||
|
|
Z_TYPE_P(container) == IS_FALSE ||
|
|
(Z_TYPE_P(container) == IS_STRING && Z_STRLEN_P(container)==0)))) {
|
|
zval_ptr_dtor_nogc(container);
|
|
object_init(container);
|
|
} else {
|
|
zend_error(E_WARNING, "Attempt to modify property of non-object");
|
|
ZVAL_INDIRECT(result, &EG(error_zval));
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (Z_OBJ_HT_P(container)->get_property_ptr_ptr) {
|
|
zval *ptr = Z_OBJ_HT_P(container)->get_property_ptr_ptr(container, prop_ptr, type, cache_slot TSRMLS_CC);
|
|
if (NULL == ptr) {
|
|
if (Z_OBJ_HT_P(container)->read_property &&
|
|
(ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type, cache_slot, result TSRMLS_CC)) != NULL) {
|
|
if (ptr != result) {
|
|
if (is_ref && ptr != &EG(uninitialized_zval)) {
|
|
ZVAL_MAKE_REF(ptr);
|
|
Z_ADDREF_P(ptr);
|
|
ZVAL_REF(result, Z_REF_P(ptr));
|
|
} else {
|
|
ZVAL_INDIRECT(result, ptr);
|
|
}
|
|
}
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Cannot access undefined property for object with overloaded property access");
|
|
}
|
|
} else {
|
|
if (is_ref) {
|
|
ZVAL_MAKE_REF(ptr);
|
|
Z_ADDREF_P(ptr);
|
|
ZVAL_REF(result, Z_REF_P(ptr));
|
|
} else {
|
|
ZVAL_INDIRECT(result, ptr);
|
|
}
|
|
}
|
|
} else if (Z_OBJ_HT_P(container)->read_property) {
|
|
zval *ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type, cache_slot, result TSRMLS_CC);
|
|
if (ptr != result) {
|
|
if (is_ref && ptr != &EG(uninitialized_zval)) {
|
|
ZVAL_MAKE_REF(ptr);
|
|
Z_ADDREF_P(ptr);
|
|
ZVAL_REF(result, Z_REF_P(ptr));
|
|
} else {
|
|
ZVAL_INDIRECT(result, ptr);
|
|
}
|
|
}
|
|
} else {
|
|
zend_error(E_WARNING, "This object doesn't support property references");
|
|
ZVAL_INDIRECT(result, &EG(error_zval));
|
|
}
|
|
}
|
|
|
|
static inline zend_brk_cont_element* zend_brk_cont(int nest_levels, int array_offset, const zend_op_array *op_array, const zend_execute_data *execute_data TSRMLS_DC)
|
|
{
|
|
int original_nest_levels = nest_levels;
|
|
zend_brk_cont_element *jmp_to;
|
|
|
|
do {
|
|
if (array_offset==-1) {
|
|
zend_error_noreturn(E_ERROR, "Cannot break/continue %d level%s", original_nest_levels, (original_nest_levels == 1) ? "" : "s");
|
|
}
|
|
jmp_to = &op_array->brk_cont_array[array_offset];
|
|
if (nest_levels>1) {
|
|
zend_op *brk_opline = &op_array->opcodes[jmp_to->brk];
|
|
|
|
if (brk_opline->opcode == ZEND_SWITCH_FREE) {
|
|
if (!(brk_opline->extended_value & EXT_TYPE_FREE_ON_RETURN)) {
|
|
zval_ptr_dtor(EX_VAR(brk_opline->op1.var));
|
|
}
|
|
} else if (brk_opline->opcode == ZEND_FREE) {
|
|
if (!(brk_opline->extended_value & EXT_TYPE_FREE_ON_RETURN)) {
|
|
zval_dtor(EX_VAR(brk_opline->op1.var));
|
|
}
|
|
}
|
|
}
|
|
array_offset = jmp_to->parent;
|
|
} while (--nest_levels > 0);
|
|
return jmp_to;
|
|
}
|
|
|
|
#if ZEND_INTENSIVE_DEBUGGING
|
|
|
|
#define CHECK_SYMBOL_TABLES() \
|
|
zend_hash_apply(&EG(symbol_table), zend_check_symbol TSRMLS_CC); \
|
|
if (&EG(symbol_table)!=EX(symbol_table)) { \
|
|
zend_hash_apply(EX(symbol_table), zend_check_symbol TSRMLS_CC); \
|
|
}
|
|
|
|
static int zend_check_symbol(zval *pz TSRMLS_DC)
|
|
{
|
|
if (Z_TYPE_P(pz) == IS_INDIRECT) {
|
|
pz = Z_INDIRECT_P(pz);
|
|
}
|
|
if (Z_TYPE_P(pz) > 10) {
|
|
fprintf(stderr, "Warning! %x has invalid type!\n", *pz);
|
|
/* See http://support.microsoft.com/kb/190351 */
|
|
#ifdef PHP_WIN32
|
|
fflush(stderr);
|
|
#endif
|
|
} else if (Z_TYPE_P(pz) == IS_ARRAY) {
|
|
zend_hash_apply(Z_ARRVAL_P(pz), zend_check_symbol TSRMLS_CC);
|
|
} else if (Z_TYPE_P(pz) == IS_OBJECT) {
|
|
/* OBJ-TBI - doesn't support new object model! */
|
|
zend_hash_apply(Z_OBJPROP_P(pz), zend_check_symbol TSRMLS_CC);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#else
|
|
#define CHECK_SYMBOL_TABLES()
|
|
#endif
|
|
|
|
ZEND_API opcode_handler_t *zend_opcode_handlers;
|
|
|
|
ZEND_API void execute_internal(zend_execute_data *execute_data, zval *return_value TSRMLS_DC)
|
|
{
|
|
execute_data->func->internal_function.handler(execute_data->num_args, return_value TSRMLS_CC);
|
|
}
|
|
|
|
void zend_clean_and_cache_symbol_table(zend_array *symbol_table TSRMLS_DC) /* {{{ */
|
|
{
|
|
if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) {
|
|
zend_hash_destroy(&symbol_table->ht);
|
|
FREE_HASHTABLE(symbol_table);
|
|
} else {
|
|
/* clean before putting into the cache, since clean
|
|
could call dtors, which could use cached hash */
|
|
zend_hash_clean(&symbol_table->ht);
|
|
*(++EG(symtable_cache_ptr)) = symbol_table;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline void i_free_compiled_variables(zend_execute_data *execute_data TSRMLS_DC) /* {{{ */
|
|
{
|
|
if (EXPECTED(EX(func)->op_array.last_var > 0)) {
|
|
zval *cv = EX_VAR_NUM(0);
|
|
zval *end = cv + EX(func)->op_array.last_var;
|
|
do {
|
|
zval_ptr_dtor(cv);
|
|
cv++;
|
|
} while (cv != end);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
void zend_free_compiled_variables(zend_execute_data *execute_data TSRMLS_DC) /* {{{ */
|
|
{
|
|
i_free_compiled_variables(execute_data TSRMLS_CC);
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* Stack Frame Layout (the whole stack frame is allocated at once)
|
|
* ==================
|
|
*
|
|
* +========================================+
|
|
* EG(current_execute_data) -> | zend_execute_data |
|
|
* +----------------------------------------+
|
|
* EX_CV_NUM(0) ---------> | VAR[0] = ARG[1] |
|
|
* | ... |
|
|
* | VAR[op_array->num_args-1] = ARG[N] |
|
|
* | ... |
|
|
* | VAR[op_array->last_var-1] |
|
|
* | VAR[op_array->last_var] = TMP[0] |
|
|
* | ... |
|
|
* | VAR[op_array->last_var+op_array->T-1] |
|
|
* | ARG[N+1] (extra_args) |
|
|
* | ... |
|
|
* +----------------------------------------+
|
|
*/
|
|
|
|
static zend_always_inline void i_init_func_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value, vm_frame_kind frame_kind TSRMLS_DC) /* {{{ */
|
|
{
|
|
uint32_t first_extra_arg, num_args;
|
|
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
|
|
ZEND_ASSERT(EX(object) == Z_OBJ(EG(This)));
|
|
|
|
EX(opline) = op_array->opcodes;
|
|
EX(call) = NULL;
|
|
EX(frame_kind) = frame_kind;
|
|
EX(return_value) = return_value;
|
|
EX(scope) = EG(scope);
|
|
EX(delayed_exception) = NULL;
|
|
ZVAL_UNDEF(&EX(old_error_reporting));
|
|
|
|
/* Handle arguments */
|
|
first_extra_arg = op_array->num_args;
|
|
if (UNEXPECTED((op_array->fn_flags & ZEND_ACC_VARIADIC) != 0)) {
|
|
first_extra_arg--;
|
|
}
|
|
num_args = EX(num_args);
|
|
if (UNEXPECTED(num_args > first_extra_arg)) {
|
|
zval *end, *src, *dst;
|
|
|
|
if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
|
|
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
|
|
EX(opline) += first_extra_arg;
|
|
}
|
|
|
|
/* move extra args into separate array after all CV and TMP vars */
|
|
end = EX_VAR_NUM(first_extra_arg - 1);
|
|
src = end + (num_args - first_extra_arg);
|
|
dst = src + (op_array->last_var + op_array->T - first_extra_arg);
|
|
if (EXPECTED(src != dst)) {
|
|
do {
|
|
ZVAL_COPY_VALUE(dst, src);
|
|
ZVAL_UNDEF(src);
|
|
src--;
|
|
dst--;
|
|
} while (src != end);
|
|
}
|
|
} else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
|
|
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
|
|
EX(opline) += num_args;
|
|
}
|
|
|
|
/* Initialize CV variables (skip arguments) */
|
|
if (EXPECTED(num_args < op_array->last_var)) {
|
|
zval *var = EX_VAR_NUM(num_args);
|
|
zval *end = EX_VAR_NUM(op_array->last_var);
|
|
|
|
do {
|
|
ZVAL_UNDEF(var);
|
|
var++;
|
|
} while (var != end);
|
|
}
|
|
|
|
if (op_array->this_var != -1 && EX(object)) {
|
|
ZVAL_OBJ(EX_VAR(op_array->this_var), EX(object));
|
|
GC_REFCOUNT(EX(object))++;
|
|
}
|
|
|
|
if (!op_array->run_time_cache && op_array->last_cache_slot) {
|
|
op_array->run_time_cache = zend_arena_calloc(&CG(arena), op_array->last_cache_slot, sizeof(void*));
|
|
}
|
|
EX(run_time_cache) = op_array->run_time_cache;
|
|
|
|
EG(current_execute_data) = execute_data;
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline void i_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value, vm_frame_kind frame_kind TSRMLS_DC) /* {{{ */
|
|
{
|
|
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
|
|
ZEND_ASSERT(EX(object) == Z_OBJ(EG(This)));
|
|
|
|
EX(opline) = op_array->opcodes;
|
|
EX(call) = NULL;
|
|
EX(frame_kind) = frame_kind;
|
|
EX(return_value) = return_value;
|
|
EX(scope) = EG(scope);
|
|
EX(delayed_exception) = NULL;
|
|
ZVAL_UNDEF(&EX(old_error_reporting));
|
|
|
|
zend_attach_symbol_table(execute_data);
|
|
|
|
if (!op_array->run_time_cache && op_array->last_cache_slot) {
|
|
op_array->run_time_cache = ecalloc(op_array->last_cache_slot, sizeof(void*));
|
|
}
|
|
EX(run_time_cache) = op_array->run_time_cache;
|
|
|
|
EG(current_execute_data) = execute_data;
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline void i_init_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value, vm_frame_kind frame_kind TSRMLS_DC) /* {{{ */
|
|
{
|
|
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
|
|
ZEND_ASSERT(EX(object) == Z_OBJ(EG(This)));
|
|
|
|
EX(opline) = op_array->opcodes;
|
|
EX(call) = NULL;
|
|
EX(frame_kind) = frame_kind;
|
|
EX(return_value) = return_value;
|
|
EX(scope) = EG(scope);
|
|
EX(delayed_exception) = NULL;
|
|
ZVAL_UNDEF(&EX(old_error_reporting));
|
|
|
|
if (UNEXPECTED(EX(symbol_table) != NULL)) {
|
|
zend_attach_symbol_table(execute_data);
|
|
} else {
|
|
uint32_t first_extra_arg, num_args;
|
|
|
|
/* Handle arguments */
|
|
first_extra_arg = op_array->num_args;
|
|
if (UNEXPECTED((op_array->fn_flags & ZEND_ACC_VARIADIC) != 0)) {
|
|
first_extra_arg--;
|
|
}
|
|
num_args = EX(num_args);
|
|
if (UNEXPECTED(num_args > first_extra_arg)) {
|
|
zval *end, *src, *dst;
|
|
|
|
if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
|
|
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
|
|
EX(opline) += first_extra_arg;
|
|
}
|
|
|
|
/* move extra args into separate array after all CV and TMP vars */
|
|
end = EX_VAR_NUM(first_extra_arg - 1);
|
|
src = end + (num_args - first_extra_arg);
|
|
dst = src + (op_array->last_var + op_array->T - first_extra_arg);
|
|
if (EXPECTED(src != dst)) {
|
|
do {
|
|
ZVAL_COPY_VALUE(dst, src);
|
|
ZVAL_UNDEF(src);
|
|
src--;
|
|
dst--;
|
|
} while (src != end);
|
|
}
|
|
} else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
|
|
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
|
|
EX(opline) += num_args;
|
|
}
|
|
|
|
/* Initialize CV variables (skip arguments) */
|
|
if (EXPECTED(num_args < op_array->last_var)) {
|
|
zval *var = EX_VAR_NUM(num_args);
|
|
zval *end = EX_VAR_NUM(op_array->last_var);
|
|
|
|
do {
|
|
ZVAL_UNDEF(var);
|
|
var++;
|
|
} while (var != end);
|
|
}
|
|
|
|
if (op_array->this_var != -1 && EX(object)) {
|
|
ZVAL_OBJ(EX_VAR(op_array->this_var), EX(object));
|
|
GC_REFCOUNT(EX(object))++;
|
|
}
|
|
}
|
|
|
|
if (!op_array->run_time_cache && op_array->last_cache_slot) {
|
|
if (op_array->function_name) {
|
|
op_array->run_time_cache = zend_arena_calloc(&CG(arena), op_array->last_cache_slot, sizeof(void*));
|
|
} else {
|
|
op_array->run_time_cache = ecalloc(op_array->last_cache_slot, sizeof(void*));
|
|
}
|
|
}
|
|
EX(run_time_cache) = op_array->run_time_cache;
|
|
|
|
EG(current_execute_data) = execute_data;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zend_execute_data *zend_create_generator_execute_data(zend_execute_data *call, zend_op_array *op_array, zval *return_value TSRMLS_DC) /* {{{ */
|
|
{
|
|
/*
|
|
* Normally the execute_data is allocated on the VM stack (because it does
|
|
* not actually do any allocation and thus is faster). For generators
|
|
* though this behavior would be suboptimal, because the (rather large)
|
|
* structure would have to be copied back and forth every time execution is
|
|
* suspended or resumed. That's why for generators the execution context
|
|
* is allocated using a separate VM stack, thus allowing to save and
|
|
* restore it simply by replacing a pointer.
|
|
*/
|
|
zend_execute_data *execute_data;
|
|
uint32_t num_args = call->num_args;
|
|
|
|
EG(argument_stack) = zend_vm_stack_new_page(
|
|
MAX(ZEND_VM_STACK_PAGE_SIZE,
|
|
ZEND_CALL_FRAME_SLOT + MAX(op_array->last_var + op_array->T, num_args)));
|
|
EG(argument_stack)->prev = NULL;
|
|
|
|
execute_data = zend_vm_stack_push_call_frame(
|
|
(zend_function*)op_array,
|
|
num_args,
|
|
call->flags,
|
|
call->called_scope,
|
|
call->object,
|
|
NULL TSRMLS_CC);
|
|
EX(num_args) = num_args;
|
|
|
|
/* copy arguments */
|
|
if (num_args > 0) {
|
|
zval *arg_src = ZEND_CALL_ARG(call, 1);
|
|
zval *arg_dst = ZEND_CALL_ARG(execute_data, 1);
|
|
uint32_t i;
|
|
|
|
for (i = 0; i < num_args; i++) {
|
|
ZVAL_COPY_VALUE(arg_dst + i, arg_src + i);
|
|
}
|
|
}
|
|
|
|
EX(symbol_table) = NULL;
|
|
|
|
i_init_func_execute_data(execute_data, op_array, return_value, VM_FRAME_TOP_FUNCTION TSRMLS_CC);
|
|
|
|
return execute_data;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_init_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value, vm_frame_kind frame_kind TSRMLS_DC) /* {{{ */
|
|
{
|
|
EX(prev_execute_data) = EG(current_execute_data);
|
|
i_init_execute_data(execute_data, op_array, return_value, frame_kind TSRMLS_CC);
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline zend_bool zend_is_by_ref_func_arg_fetch(const zend_op *opline, zend_execute_data *call TSRMLS_DC) /* {{{ */
|
|
{
|
|
uint32_t arg_num = opline->extended_value & ZEND_FETCH_ARG_MASK;
|
|
return ARG_SHOULD_BE_SENT_BY_REF(call->func, arg_num);
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_execute_data *zend_vm_stack_copy_call_frame(zend_execute_data *call, uint32_t passed_args, uint32_t additional_args TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_execute_data *new_call;
|
|
int used_stack = (EG(argument_stack)->top - (zval*)call) + additional_args;
|
|
|
|
/* copy call frame into new stack segment */
|
|
zend_vm_stack_extend(used_stack TSRMLS_CC);
|
|
new_call = (zend_execute_data*)EG(argument_stack)->top;
|
|
EG(argument_stack)->top += used_stack;
|
|
*new_call = *call;
|
|
if (passed_args) {
|
|
zval *src = ZEND_CALL_ARG(call, 1);
|
|
zval *dst = ZEND_CALL_ARG(new_call, 1);
|
|
do {
|
|
ZVAL_COPY_VALUE(dst, src);
|
|
passed_args--;
|
|
src++;
|
|
dst++;
|
|
} while (passed_args);
|
|
}
|
|
|
|
/* delete old call_frame from previous stack segment */
|
|
EG(argument_stack)->prev->top = (zval*)call;
|
|
|
|
/* delete previous stack segment if it becames empty */
|
|
if (UNEXPECTED(EG(argument_stack)->prev->top == ZEND_VM_STACK_ELEMETS(EG(argument_stack)->prev))) {
|
|
zend_vm_stack r = EG(argument_stack)->prev;
|
|
|
|
EG(argument_stack)->prev = r->prev;
|
|
efree(r);
|
|
}
|
|
|
|
return new_call;
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline void zend_vm_stack_extend_call_frame(zend_execute_data **call, uint32_t passed_args, uint32_t additional_args TSRMLS_DC) /* {{{ */
|
|
{
|
|
if (EXPECTED(EG(argument_stack)->end - EG(argument_stack)->top > additional_args)) {
|
|
EG(argument_stack)->top += additional_args;
|
|
} else {
|
|
*call = zend_vm_stack_copy_call_frame(*call, passed_args, additional_args TSRMLS_CC);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
#define ZEND_VM_NEXT_OPCODE() \
|
|
CHECK_SYMBOL_TABLES() \
|
|
ZEND_VM_INC_OPCODE(); \
|
|
ZEND_VM_CONTINUE()
|
|
|
|
#define ZEND_VM_SET_OPCODE(new_op) \
|
|
CHECK_SYMBOL_TABLES() \
|
|
OPLINE = new_op
|
|
|
|
#define ZEND_VM_SET_RELATIVE_OPCODE(opline, offset) \
|
|
CHECK_SYMBOL_TABLES() \
|
|
OPLINE = ((zend_op*)(((char*)opline)+(offset)))
|
|
|
|
#define ZEND_VM_JMP(new_op) \
|
|
if (EXPECTED(!EG(exception))) { \
|
|
ZEND_VM_SET_OPCODE(new_op); \
|
|
} else { \
|
|
LOAD_OPLINE(); \
|
|
} \
|
|
ZEND_VM_CONTINUE()
|
|
|
|
#define ZEND_VM_INC_OPCODE() \
|
|
OPLINE++
|
|
|
|
#ifdef __GNUC__
|
|
# define ZEND_VM_GUARD(name) __asm__("#" #name)
|
|
#else
|
|
# define ZEND_VM_GUARD(name)
|
|
#endif
|
|
|
|
#include "zend_vm_execute.h"
|
|
|
|
ZEND_API int zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler)
|
|
{
|
|
if (opcode != ZEND_USER_OPCODE) {
|
|
if (handler == NULL) {
|
|
/* restore the original handler */
|
|
zend_user_opcodes[opcode] = opcode;
|
|
} else {
|
|
zend_user_opcodes[opcode] = ZEND_USER_OPCODE;
|
|
}
|
|
zend_user_opcode_handlers[opcode] = handler;
|
|
return SUCCESS;
|
|
}
|
|
return FAILURE;
|
|
}
|
|
|
|
ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode)
|
|
{
|
|
return zend_user_opcode_handlers[opcode];
|
|
}
|
|
|
|
ZEND_API zval *zend_get_zval_ptr(int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type TSRMLS_DC) {
|
|
return get_zval_ptr(op_type, node, execute_data, should_free, type);
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*/
|