mirror of
https://github.com/php/php-src.git
synced 2024-11-27 11:53:33 +08:00
3178 lines
94 KiB
C
3178 lines
94 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
|
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| Copyright (c) 1998-2017 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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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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| Dmitry Stogov <dmitry@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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#include "zend_type_info.h"
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|
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/* Virtual current working directory support */
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#include "zend_virtual_cwd.h"
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#ifdef HAVE_GCC_GLOBAL_REGS
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# if defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(i386)
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# define ZEND_VM_FP_GLOBAL_REG "%esi"
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# define ZEND_VM_IP_GLOBAL_REG "%edi"
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# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__x86_64__)
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# define ZEND_VM_FP_GLOBAL_REG "%r14"
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# define ZEND_VM_IP_GLOBAL_REG "%r15"
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# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__powerpc64__)
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# define ZEND_VM_FP_GLOBAL_REG "r28"
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# define ZEND_VM_IP_GLOBAL_REG "r29"
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# elif defined(__IBMC__) && ZEND_GCC_VERSION >= 4002 && defined(__powerpc64__)
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# define ZEND_VM_FP_GLOBAL_REG "r28"
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# define ZEND_VM_IP_GLOBAL_REG "r29"
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# endif
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#endif
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#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
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# pragma GCC diagnostic ignored "-Wvolatile-register-var"
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register zend_execute_data* volatile execute_data __asm__(ZEND_VM_FP_GLOBAL_REG);
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# pragma GCC diagnostic warning "-Wvolatile-register-var"
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# define EXECUTE_DATA_D void
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# define EXECUTE_DATA_C
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# define EXECUTE_DATA_DC
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# define EXECUTE_DATA_CC
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# define NO_EXECUTE_DATA_CC
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# define OPLINE_D void
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# define OPLINE_C
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# define OPLINE_DC
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# define OPLINE_CC
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#else
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# define EXECUTE_DATA_D zend_execute_data* execute_data
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# define EXECUTE_DATA_C execute_data
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# define EXECUTE_DATA_DC , EXECUTE_DATA_D
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# define EXECUTE_DATA_CC , EXECUTE_DATA_C
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# define NO_EXECUTE_DATA_CC , NULL
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# define OPLINE_D const zend_op* opline
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# define OPLINE_C opline
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# define OPLINE_DC , OPLINE_D
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# define OPLINE_CC , OPLINE_C
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#endif
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#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
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# pragma GCC diagnostic ignored "-Wvolatile-register-var"
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register const zend_op* volatile opline __asm__(ZEND_VM_IP_GLOBAL_REG);
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# pragma GCC diagnostic warning "-Wvolatile-register-var"
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#else
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#endif
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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 (ZEND_FASTCALL *incdec_t)(zval *);
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#define get_zval_ptr(op_type, node, should_free, type) _get_zval_ptr(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC)
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#define get_zval_ptr_deref(op_type, node, should_free, type) _get_zval_ptr_deref(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC)
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#define get_zval_ptr_undef(op_type, node, should_free, type) _get_zval_ptr_undef(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC)
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#define get_op_data_zval_ptr_r(op_type, node, should_free) _get_op_data_zval_ptr_r(op_type, node, should_free EXECUTE_DATA_CC OPLINE_CC)
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#define get_op_data_zval_ptr_deref_r(op_type, node, should_free) _get_op_data_zval_ptr_deref_r(op_type, node, should_free EXECUTE_DATA_CC OPLINE_CC)
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#define get_zval_ptr_ptr(op_type, node, should_free, type) _get_zval_ptr_ptr(op_type, node, should_free, type EXECUTE_DATA_CC)
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#define get_zval_ptr_ptr_undef(op_type, node, should_free, type) _get_zval_ptr_ptr(op_type, node, should_free, type EXECUTE_DATA_CC)
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#define get_obj_zval_ptr(op_type, node, should_free, type) _get_obj_zval_ptr(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC)
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#define get_obj_zval_ptr_undef(op_type, node, should_free, type) _get_obj_zval_ptr_undef(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC)
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#define get_obj_zval_ptr_ptr(op_type, node, should_free, type) _get_obj_zval_ptr_ptr(op_type, node, should_free, type EXECUTE_DATA_CC)
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#define RETURN_VALUE_USED(opline) ((opline)->result_type != IS_UNUSED)
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static ZEND_FUNCTION(pass)
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{
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}
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ZEND_API const zend_internal_function zend_pass_function = {
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ZEND_INTERNAL_FUNCTION, /* type */
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{0, 0, 0}, /* arg_flags */
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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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{NULL,NULL,NULL,NULL} /* reserved */
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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)
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#define FREE_VAR_PTR_AND_EXTRACT_RESULT_IF_NECESSARY(free_op, result) do { \
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zval *__container_to_free = (free_op); \
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if (UNEXPECTED(__container_to_free) \
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&& EXPECTED(Z_REFCOUNTED_P(__container_to_free))) { \
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zend_refcounted *__ref = Z_COUNTED_P(__container_to_free); \
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if (UNEXPECTED(!GC_DELREF(__ref))) { \
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zval *__zv = (result); \
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if (EXPECTED(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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zval_dtor_func(__ref); \
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} \
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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) { \
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zval_ptr_dtor_nogc(should_free); \
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}
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#define FREE_UNFETCHED_OP(type, var) \
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if ((type) & (IS_TMP_VAR|IS_VAR)) { \
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zval_ptr_dtor_nogc(EX_VAR(var)); \
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}
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#define FREE_OP_VAR_PTR(should_free) \
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if (should_free) { \
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zval_ptr_dtor_nogc(should_free); \
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}
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#define CV_DEF_OF(i) (EX(func)->op_array.vars[i])
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#define ZEND_VM_STACK_PAGE_SLOTS (16 * 1024) /* should be a power of 2 */
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#define ZEND_VM_STACK_PAGE_SIZE (ZEND_VM_STACK_PAGE_SLOTS * sizeof(zval))
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#define ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size) \
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(((size) + ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval) \
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+ (ZEND_VM_STACK_PAGE_SIZE - 1)) & ~(ZEND_VM_STACK_PAGE_SIZE - 1))
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static zend_always_inline zend_vm_stack zend_vm_stack_new_page(size_t size, zend_vm_stack prev) {
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zend_vm_stack page = (zend_vm_stack)emalloc(size);
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page->top = ZEND_VM_STACK_ELEMENTS(page);
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page->end = (zval*)((char*)page + size);
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page->prev = prev;
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return page;
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}
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ZEND_API void zend_vm_stack_init(void)
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{
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EG(vm_stack_page_size) = ZEND_VM_STACK_PAGE_SIZE;
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EG(vm_stack) = zend_vm_stack_new_page(ZEND_VM_STACK_PAGE_SIZE, NULL);
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EG(vm_stack)->top++;
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EG(vm_stack_top) = EG(vm_stack)->top;
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EG(vm_stack_end) = EG(vm_stack)->end;
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}
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ZEND_API void zend_vm_stack_destroy(void)
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{
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zend_vm_stack stack = EG(vm_stack);
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while (stack != NULL) {
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zend_vm_stack p = stack->prev;
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efree(stack);
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stack = p;
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}
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}
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ZEND_API void* zend_vm_stack_extend(size_t size)
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{
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zend_vm_stack stack;
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void *ptr;
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stack = EG(vm_stack);
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stack->top = EG(vm_stack_top);
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EG(vm_stack) = stack = zend_vm_stack_new_page(
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EXPECTED(size < EG(vm_stack_page_size) - (ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval))) ?
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EG(vm_stack_page_size) : ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size),
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stack);
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ptr = stack->top;
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EG(vm_stack_top) = (void*)(((char*)ptr) + size);
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EG(vm_stack_end) = stack->end;
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return ptr;
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}
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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, zend_free_op *should_free EXECUTE_DATA_DC)
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{
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zval *ret = EX_VAR(var);
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*should_free = 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, zend_free_op *should_free EXECUTE_DATA_DC)
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{
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zval *ret = EX_VAR(var);
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*should_free = 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, zend_free_op *should_free EXECUTE_DATA_DC)
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{
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zval *ret = EX_VAR(var);
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*should_free = 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 ZEND_COLD void zval_undefined_cv(uint32_t var EXECUTE_DATA_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", ZSTR_VAL(cv));
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}
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static zend_never_inline zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type EXECUTE_DATA_DC)
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{
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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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zval_undefined_cv(var EXECUTE_DATA_CC);
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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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zval_undefined_cv(var EXECUTE_DATA_CC);
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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 EXECUTE_DATA_DC)
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{
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zval_undefined_cv(var EXECUTE_DATA_CC);
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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 EXECUTE_DATA_DC)
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{
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zval_undefined_cv(var EXECUTE_DATA_CC);
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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 EXECUTE_DATA_DC)
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{
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ZVAL_NULL(ptr);
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zval_undefined_cv(var EXECUTE_DATA_CC);
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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 EXECUTE_DATA_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(uint32_t var, int type EXECUTE_DATA_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_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(uint32_t var EXECUTE_DATA_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(uint32_t var, int type EXECUTE_DATA_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_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(uint32_t var EXECUTE_DATA_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_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(uint32_t var EXECUTE_DATA_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_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(uint32_t var EXECUTE_DATA_DC)
|
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{
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zval *ret = EX_VAR(var);
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|
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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_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(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
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|
return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var EXECUTE_DATA_CC);
|
|
}
|
|
ZVAL_DEREF(ret);
|
|
return ret;
|
|
}
|
|
|
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
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|
|
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return ret;
|
|
}
|
|
|
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static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_IS(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
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ZVAL_DEREF(ret);
|
|
return ret;
|
|
}
|
|
|
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static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
|
|
return _get_zval_cv_lookup_BP_VAR_RW(ret, var EXECUTE_DATA_CC);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
|
|
return _get_zval_cv_lookup_BP_VAR_RW(ret, var EXECUTE_DATA_CC);
|
|
}
|
|
ZVAL_DEREF(ret);
|
|
return ret;
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
|
if (Z_TYPE_P(ret) == IS_UNDEF) {
|
|
return _get_zval_cv_lookup_BP_VAR_W(ret, var EXECUTE_DATA_CC);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_W(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
return EX_VAR(var);
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
return EX_VAR(var);
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_UNSET(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
return EX_VAR(var);
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_W(uint32_t var EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
|
if (Z_TYPE_P(ret) == IS_UNDEF) {
|
|
return _get_zval_cv_lookup_BP_VAR_W(ret, var EXECUTE_DATA_CC);
|
|
}
|
|
ZVAL_DEREF(ret);
|
|
return ret;
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type & (IS_TMP_VAR|IS_VAR)) {
|
|
if (op_type == IS_TMP_VAR) {
|
|
return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC);
|
|
} else {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_var(node.var, should_free EXECUTE_DATA_CC);
|
|
}
|
|
} else {
|
|
*should_free = NULL;
|
|
if (op_type == IS_CONST) {
|
|
return RT_CONSTANT(opline, node);
|
|
} else if (op_type == IS_CV) {
|
|
return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_op_data_zval_ptr_r(int op_type, znode_op node, zend_free_op *should_free EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type & (IS_TMP_VAR|IS_VAR)) {
|
|
if (op_type == IS_TMP_VAR) {
|
|
return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC);
|
|
} else {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_var(node.var, should_free EXECUTE_DATA_CC);
|
|
}
|
|
} else {
|
|
*should_free = NULL;
|
|
if (op_type == IS_CONST) {
|
|
return RT_CONSTANT(opline + 1, node);
|
|
} else if (op_type == IS_CV) {
|
|
return _get_zval_ptr_cv_BP_VAR_R(node.var EXECUTE_DATA_CC);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_deref(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type & (IS_TMP_VAR|IS_VAR)) {
|
|
if (op_type == IS_TMP_VAR) {
|
|
return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC);
|
|
} else {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_var_deref(node.var, should_free EXECUTE_DATA_CC);
|
|
}
|
|
} else {
|
|
*should_free = NULL;
|
|
if (op_type == IS_CONST) {
|
|
return RT_CONSTANT(opline, node);
|
|
} else if (op_type == IS_CV) {
|
|
return _get_zval_ptr_cv_deref(node.var, type EXECUTE_DATA_CC);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_op_data_zval_ptr_deref_r(int op_type, znode_op node, zend_free_op *should_free EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type & (IS_TMP_VAR|IS_VAR)) {
|
|
if (op_type == IS_TMP_VAR) {
|
|
return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC);
|
|
} else {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_var_deref(node.var, should_free EXECUTE_DATA_CC);
|
|
}
|
|
} else {
|
|
*should_free = NULL;
|
|
if (op_type == IS_CONST) {
|
|
return RT_CONSTANT(opline + 1, node);
|
|
} else if (op_type == IS_CV) {
|
|
return _get_zval_ptr_cv_deref_BP_VAR_R(node.var EXECUTE_DATA_CC);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_undef(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type & (IS_TMP_VAR|IS_VAR)) {
|
|
if (op_type == IS_TMP_VAR) {
|
|
return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC);
|
|
} else {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_var(node.var, should_free EXECUTE_DATA_CC);
|
|
}
|
|
} else {
|
|
*should_free = NULL;
|
|
if (op_type == IS_CONST) {
|
|
return RT_CONSTANT(opline, node);
|
|
} else if (op_type == IS_CV) {
|
|
return _get_zval_ptr_cv_undef(node.var EXECUTE_DATA_CC);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var, zend_free_op *should_free EXECUTE_DATA_DC)
|
|
{
|
|
zval *ret = EX_VAR(var);
|
|
|
|
if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) {
|
|
*should_free = NULL;
|
|
ret = Z_INDIRECT_P(ret);
|
|
} else {
|
|
*should_free = ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline zval *_get_zval_ptr_ptr(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC)
|
|
{
|
|
if (op_type == IS_CV) {
|
|
*should_free = NULL;
|
|
return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC);
|
|
} else /* if (op_type == IS_VAR) */ {
|
|
ZEND_ASSERT(op_type == IS_VAR);
|
|
return _get_zval_ptr_ptr_var(node.var, should_free EXECUTE_DATA_CC);
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval *_get_obj_zval_ptr_unused(EXECUTE_DATA_D)
|
|
{
|
|
return &EX(This);
|
|
}
|
|
|
|
static inline zval *_get_obj_zval_ptr(int op_type, znode_op op, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type == IS_UNUSED) {
|
|
*should_free = NULL;
|
|
return &EX(This);
|
|
}
|
|
return get_zval_ptr(op_type, op, should_free, type);
|
|
}
|
|
|
|
static inline zval *_get_obj_zval_ptr_undef(int op_type, znode_op op, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
if (op_type == IS_UNUSED) {
|
|
*should_free = NULL;
|
|
return &EX(This);
|
|
}
|
|
return get_zval_ptr_undef(op_type, op, should_free, type);
|
|
}
|
|
|
|
static inline zval *_get_obj_zval_ptr_ptr(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC)
|
|
{
|
|
if (op_type == IS_UNUSED) {
|
|
*should_free = NULL;
|
|
return &EX(This);
|
|
}
|
|
return get_zval_ptr_ptr(op_type, node, should_free, type);
|
|
}
|
|
|
|
static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr)
|
|
{
|
|
zend_reference *ref;
|
|
|
|
if (EXPECTED(!Z_ISREF_P(value_ptr))) {
|
|
ZVAL_NEW_REF(value_ptr, value_ptr);
|
|
} else if (UNEXPECTED(variable_ptr == value_ptr)) {
|
|
return;
|
|
}
|
|
|
|
ref = Z_REF_P(value_ptr);
|
|
GC_ADDREF(ref);
|
|
if (Z_REFCOUNTED_P(variable_ptr)) {
|
|
zend_refcounted *garbage = Z_COUNTED_P(variable_ptr);
|
|
|
|
if (GC_DELREF(garbage) == 0) {
|
|
ZVAL_REF(variable_ptr, ref);
|
|
zval_dtor_func(garbage);
|
|
return;
|
|
} else {
|
|
gc_check_possible_root(garbage);
|
|
}
|
|
}
|
|
ZVAL_REF(variable_ptr, ref);
|
|
}
|
|
|
|
/* this should modify object only if it's empty */
|
|
static inline int make_real_object(zval *object)
|
|
{
|
|
if (UNEXPECTED(Z_TYPE_P(object) != IS_OBJECT)) {
|
|
if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE)) {
|
|
/* nothing to destroy */
|
|
} else if (EXPECTED((Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0))) {
|
|
zval_ptr_dtor_nogc(object);
|
|
} else {
|
|
return 0;
|
|
}
|
|
object_init(object);
|
|
zend_error(E_WARNING, "Creating default object from empty value");
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static ZEND_COLD void zend_verify_type_error_common(
|
|
const zend_function *zf, const zend_arg_info *arg_info,
|
|
const zend_class_entry *ce, zval *value,
|
|
const char **fname, const char **fsep, const char **fclass,
|
|
const char **need_msg, const char **need_kind, const char **need_or_null,
|
|
const char **given_msg, const char **given_kind)
|
|
{
|
|
zend_bool is_interface = 0;
|
|
*fname = ZSTR_VAL(zf->common.function_name);
|
|
if (zf->common.scope) {
|
|
*fsep = "::";
|
|
*fclass = ZSTR_VAL(zf->common.scope->name);
|
|
} else {
|
|
*fsep = "";
|
|
*fclass = "";
|
|
}
|
|
|
|
if (ZEND_TYPE_IS_CLASS(arg_info->type)) {
|
|
if (ce) {
|
|
if (ce->ce_flags & ZEND_ACC_INTERFACE) {
|
|
*need_msg = "implement interface ";
|
|
is_interface = 1;
|
|
} else {
|
|
*need_msg = "be an instance of ";
|
|
}
|
|
*need_kind = ZSTR_VAL(ce->name);
|
|
} else {
|
|
/* We don't know whether it's a class or interface, assume it's a class */
|
|
|
|
*need_msg = "be an instance of ";
|
|
*need_kind = ZSTR_VAL(ZEND_TYPE_NAME(arg_info->type));
|
|
}
|
|
} else {
|
|
switch (ZEND_TYPE_CODE(arg_info->type)) {
|
|
case IS_OBJECT:
|
|
*need_msg = "be an ";
|
|
*need_kind = "object";
|
|
break;
|
|
case IS_CALLABLE:
|
|
*need_msg = "be callable";
|
|
*need_kind = "";
|
|
break;
|
|
case IS_ITERABLE:
|
|
*need_msg = "be iterable";
|
|
*need_kind = "";
|
|
break;
|
|
default:
|
|
*need_msg = "be of the type ";
|
|
*need_kind = zend_get_type_by_const(ZEND_TYPE_CODE(arg_info->type));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ZEND_TYPE_ALLOW_NULL(arg_info->type)) {
|
|
*need_or_null = is_interface ? " or be null" : " or null";
|
|
} else {
|
|
*need_or_null = "";
|
|
}
|
|
|
|
if (value) {
|
|
if (ZEND_TYPE_IS_CLASS(arg_info->type) && Z_TYPE_P(value) == IS_OBJECT) {
|
|
*given_msg = "instance of ";
|
|
*given_kind = ZSTR_VAL(Z_OBJCE_P(value)->name);
|
|
} else {
|
|
*given_msg = zend_zval_type_name(value);
|
|
*given_kind = "";
|
|
}
|
|
} else {
|
|
*given_msg = "none";
|
|
*given_kind = "";
|
|
}
|
|
}
|
|
|
|
static ZEND_COLD void zend_verify_arg_error(
|
|
const zend_function *zf, const zend_arg_info *arg_info,
|
|
int arg_num, const zend_class_entry *ce, zval *value)
|
|
{
|
|
zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
|
|
const char *fname, *fsep, *fclass;
|
|
const char *need_msg, *need_kind, *need_or_null, *given_msg, *given_kind;
|
|
|
|
if (value) {
|
|
zend_verify_type_error_common(
|
|
zf, arg_info, ce, value,
|
|
&fname, &fsep, &fclass, &need_msg, &need_kind, &need_or_null, &given_msg, &given_kind);
|
|
|
|
if (zf->common.type == ZEND_USER_FUNCTION) {
|
|
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
|
|
zend_type_error("Argument %d passed to %s%s%s() must %s%s%s, %s%s given, called in %s on line %d",
|
|
arg_num, fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind,
|
|
ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno);
|
|
} else {
|
|
zend_type_error("Argument %d passed to %s%s%s() must %s%s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind);
|
|
}
|
|
} else {
|
|
zend_type_error("Argument %d passed to %s%s%s() must %s%s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind);
|
|
}
|
|
} else {
|
|
zend_missing_arg_error(ptr);
|
|
}
|
|
}
|
|
|
|
static int is_null_constant(zend_class_entry *scope, zval *default_value)
|
|
{
|
|
if (Z_TYPE_P(default_value) == IS_CONSTANT_AST) {
|
|
zval constant;
|
|
|
|
ZVAL_COPY(&constant, default_value);
|
|
if (UNEXPECTED(zval_update_constant_ex(&constant, scope) != SUCCESS)) {
|
|
return 0;
|
|
}
|
|
if (Z_TYPE(constant) == IS_NULL) {
|
|
return 1;
|
|
}
|
|
zval_ptr_dtor_nogc(&constant);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static zend_bool zend_verify_weak_scalar_type_hint(zend_uchar type_hint, zval *arg)
|
|
{
|
|
switch (type_hint) {
|
|
case _IS_BOOL: {
|
|
zend_bool dest;
|
|
|
|
if (!zend_parse_arg_bool_weak(arg, &dest)) {
|
|
return 0;
|
|
}
|
|
zval_ptr_dtor(arg);
|
|
ZVAL_BOOL(arg, dest);
|
|
return 1;
|
|
}
|
|
case IS_LONG: {
|
|
zend_long dest;
|
|
|
|
if (!zend_parse_arg_long_weak(arg, &dest)) {
|
|
return 0;
|
|
}
|
|
zval_ptr_dtor(arg);
|
|
ZVAL_LONG(arg, dest);
|
|
return 1;
|
|
}
|
|
case IS_DOUBLE: {
|
|
double dest;
|
|
|
|
if (!zend_parse_arg_double_weak(arg, &dest)) {
|
|
return 0;
|
|
}
|
|
zval_ptr_dtor(arg);
|
|
ZVAL_DOUBLE(arg, dest);
|
|
return 1;
|
|
}
|
|
case IS_STRING: {
|
|
zend_string *dest;
|
|
|
|
/* on success "arg" is converted to IS_STRING */
|
|
if (!zend_parse_arg_str_weak(arg, &dest)) {
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static zend_bool zend_verify_scalar_type_hint(zend_uchar type_hint, zval *arg, zend_bool strict)
|
|
{
|
|
if (UNEXPECTED(strict)) {
|
|
/* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */
|
|
if (type_hint != IS_DOUBLE || Z_TYPE_P(arg) != IS_LONG) {
|
|
return 0;
|
|
}
|
|
} else if (UNEXPECTED(Z_TYPE_P(arg) == IS_NULL)) {
|
|
/* NULL may be accepted only by nullable hints (this is already checked) */
|
|
return 0;
|
|
}
|
|
return zend_verify_weak_scalar_type_hint(type_hint, arg);
|
|
}
|
|
|
|
static zend_always_inline zend_bool zend_check_type(
|
|
zend_type type,
|
|
zval *arg, zend_class_entry **ce, void **cache_slot,
|
|
zval *default_value, zend_class_entry *scope,
|
|
zend_bool is_return_type)
|
|
{
|
|
if (!ZEND_TYPE_IS_SET(type)) {
|
|
return 1;
|
|
}
|
|
|
|
ZVAL_DEREF(arg);
|
|
if (ZEND_TYPE_IS_CLASS(type)) {
|
|
if (EXPECTED(*cache_slot)) {
|
|
*ce = (zend_class_entry *) *cache_slot;
|
|
} else {
|
|
*ce = zend_fetch_class(ZEND_TYPE_NAME(type), (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD));
|
|
if (UNEXPECTED(!*ce)) {
|
|
return Z_TYPE_P(arg) == IS_NULL && (ZEND_TYPE_ALLOW_NULL(type) || (default_value && is_null_constant(scope, default_value)));
|
|
}
|
|
*cache_slot = (void *) *ce;
|
|
}
|
|
if (EXPECTED(Z_TYPE_P(arg) == IS_OBJECT)) {
|
|
return instanceof_function(Z_OBJCE_P(arg), *ce);
|
|
}
|
|
return Z_TYPE_P(arg) == IS_NULL && (ZEND_TYPE_ALLOW_NULL(type) || (default_value && is_null_constant(scope, default_value)));
|
|
} else if (EXPECTED(ZEND_TYPE_CODE(type) == Z_TYPE_P(arg))) {
|
|
return 1;
|
|
}
|
|
|
|
if (Z_TYPE_P(arg) == IS_NULL && (ZEND_TYPE_ALLOW_NULL(type) || (default_value && is_null_constant(scope, default_value)))) {
|
|
/* Null passed to nullable type */
|
|
return 1;
|
|
}
|
|
|
|
if (ZEND_TYPE_CODE(type) == IS_CALLABLE) {
|
|
return zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL);
|
|
} else if (ZEND_TYPE_CODE(type) == IS_ITERABLE) {
|
|
return zend_is_iterable(arg);
|
|
} else if (ZEND_TYPE_CODE(type) == _IS_BOOL &&
|
|
EXPECTED(Z_TYPE_P(arg) == IS_FALSE || Z_TYPE_P(arg) == IS_TRUE)) {
|
|
return 1;
|
|
} else {
|
|
return zend_verify_scalar_type_hint(ZEND_TYPE_CODE(type), arg,
|
|
is_return_type ? ZEND_RET_USES_STRICT_TYPES() : ZEND_ARG_USES_STRICT_TYPES());
|
|
}
|
|
|
|
/* Special handling for IS_VOID is not necessary (for return types),
|
|
* because this case is already checked at compile-time. */
|
|
}
|
|
|
|
static zend_always_inline int zend_verify_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value, void **cache_slot)
|
|
{
|
|
zend_arg_info *cur_arg_info;
|
|
zend_class_entry *ce;
|
|
|
|
if (EXPECTED(arg_num <= zf->common.num_args)) {
|
|
cur_arg_info = &zf->common.arg_info[arg_num-1];
|
|
} else if (UNEXPECTED(zf->common.fn_flags & ZEND_ACC_VARIADIC)) {
|
|
cur_arg_info = &zf->common.arg_info[zf->common.num_args];
|
|
} else {
|
|
return 1;
|
|
}
|
|
|
|
if (UNEXPECTED(!zend_check_type(cur_arg_info->type, arg, &ce, cache_slot, default_value, zf->common.scope, 0))) {
|
|
zend_verify_arg_error(zf, cur_arg_info, arg_num, ce, arg);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static zend_never_inline int zend_verify_internal_arg_types(zend_function *fbc, zend_execute_data *call)
|
|
{
|
|
uint32_t i;
|
|
uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
|
|
zval *p = ZEND_CALL_ARG(call, 1);
|
|
void *dummy_cache_slot;
|
|
|
|
for (i = 0; i < num_args; ++i) {
|
|
dummy_cache_slot = NULL;
|
|
if (UNEXPECTED(!zend_verify_arg_type(fbc, i + 1, p, NULL, &dummy_cache_slot))) {
|
|
EG(current_execute_data) = call->prev_execute_data;
|
|
zend_vm_stack_free_args(call);
|
|
return 0;
|
|
}
|
|
p++;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_missing_arg_error(zend_execute_data *execute_data)
|
|
{
|
|
zend_execute_data *ptr = EX(prev_execute_data);
|
|
|
|
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
|
|
zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed in %s on line %d and %s %d expected",
|
|
EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "",
|
|
EX(func)->common.scope ? "::" : "",
|
|
ZSTR_VAL(EX(func)->common.function_name),
|
|
EX_NUM_ARGS(),
|
|
ZSTR_VAL(ptr->func->op_array.filename),
|
|
ptr->opline->lineno,
|
|
EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least",
|
|
EX(func)->common.required_num_args);
|
|
} else {
|
|
zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed and %s %d expected",
|
|
EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "",
|
|
EX(func)->common.scope ? "::" : "",
|
|
ZSTR_VAL(EX(func)->common.function_name),
|
|
EX_NUM_ARGS(),
|
|
EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least",
|
|
EX(func)->common.required_num_args);
|
|
}
|
|
}
|
|
|
|
static ZEND_COLD void zend_verify_return_error(
|
|
const zend_function *zf, const zend_class_entry *ce, zval *value)
|
|
{
|
|
const zend_arg_info *arg_info = &zf->common.arg_info[-1];
|
|
const char *fname, *fsep, *fclass;
|
|
const char *need_msg, *need_kind, *need_or_null, *given_msg, *given_kind;
|
|
|
|
zend_verify_type_error_common(
|
|
zf, arg_info, ce, value,
|
|
&fname, &fsep, &fclass, &need_msg, &need_kind, &need_or_null, &given_msg, &given_kind);
|
|
|
|
zend_type_error("Return value of %s%s%s() must %s%s%s, %s%s returned",
|
|
fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind);
|
|
}
|
|
|
|
#if ZEND_DEBUG
|
|
static ZEND_COLD void zend_verify_internal_return_error(
|
|
const zend_function *zf, const zend_class_entry *ce, zval *value)
|
|
{
|
|
const zend_arg_info *arg_info = &zf->common.arg_info[-1];
|
|
const char *fname, *fsep, *fclass;
|
|
const char *need_msg, *need_kind, *need_or_null, *given_msg, *given_kind;
|
|
|
|
zend_verify_type_error_common(
|
|
zf, arg_info, ce, value,
|
|
&fname, &fsep, &fclass, &need_msg, &need_kind, &need_or_null, &given_msg, &given_kind);
|
|
|
|
zend_error_noreturn(E_CORE_ERROR, "Return value of %s%s%s() must %s%s%s, %s%s returned",
|
|
fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind);
|
|
}
|
|
|
|
static ZEND_COLD void zend_verify_void_return_error(const zend_function *zf, const char *returned_msg, const char *returned_kind)
|
|
{
|
|
const char *fname = ZSTR_VAL(zf->common.function_name);
|
|
const char *fsep;
|
|
const char *fclass;
|
|
|
|
if (zf->common.scope) {
|
|
fsep = "::";
|
|
fclass = ZSTR_VAL(zf->common.scope->name);
|
|
} else {
|
|
fsep = "";
|
|
fclass = "";
|
|
}
|
|
|
|
zend_type_error("%s%s%s() must not return a value, %s%s returned",
|
|
fclass, fsep, fname, returned_msg, returned_kind);
|
|
}
|
|
|
|
static int zend_verify_internal_return_type(zend_function *zf, zval *ret)
|
|
{
|
|
zend_internal_arg_info *ret_info = zf->internal_function.arg_info - 1;
|
|
zend_class_entry *ce = NULL;
|
|
void *dummy_cache_slot = NULL;
|
|
|
|
if (UNEXPECTED(ZEND_TYPE_CODE(ret_info->type) == IS_VOID && Z_TYPE_P(ret) != IS_NULL)) {
|
|
zend_verify_void_return_error(zf, zend_zval_type_name(ret), "");
|
|
return 0;
|
|
}
|
|
|
|
if (UNEXPECTED(!zend_check_type(ret_info->type, ret, &ce, &dummy_cache_slot, NULL, NULL, 1))) {
|
|
zend_verify_internal_return_error(zf, ce, ret);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
static zend_always_inline void zend_verify_return_type(zend_function *zf, zval *ret, void **cache_slot)
|
|
{
|
|
zend_arg_info *ret_info = zf->common.arg_info - 1;
|
|
zend_class_entry *ce = NULL;
|
|
|
|
if (UNEXPECTED(!zend_check_type(ret_info->type, ret, &ce, cache_slot, NULL, NULL, 1))) {
|
|
zend_verify_return_error(zf, ce, ret);
|
|
}
|
|
}
|
|
|
|
static ZEND_COLD int zend_verify_missing_return_type(zend_function *zf, void **cache_slot)
|
|
{
|
|
zend_arg_info *ret_info = zf->common.arg_info - 1;
|
|
|
|
if (ZEND_TYPE_IS_SET(ret_info->type) && UNEXPECTED(ZEND_TYPE_CODE(ret_info->type) != IS_VOID)) {
|
|
zend_class_entry *ce = NULL;
|
|
if (ZEND_TYPE_IS_CLASS(ret_info->type)) {
|
|
if (EXPECTED(*cache_slot)) {
|
|
ce = (zend_class_entry*) *cache_slot;
|
|
} else {
|
|
ce = zend_fetch_class(ZEND_TYPE_NAME(ret_info->type), (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD));
|
|
if (ce) {
|
|
*cache_slot = (void*)ce;
|
|
}
|
|
}
|
|
}
|
|
zend_verify_return_error(zf, ce, NULL);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static zend_never_inline void zend_assign_to_object_dim(zval *object, zval *dim, zval *value)
|
|
{
|
|
if (UNEXPECTED(!Z_OBJ_HT_P(object)->write_dimension)) {
|
|
zend_throw_error(NULL, "Cannot use object as array");
|
|
return;
|
|
}
|
|
|
|
Z_OBJ_HT_P(object)->write_dimension(object, dim, value);
|
|
}
|
|
|
|
static zend_never_inline void zend_binary_assign_op_obj_dim(zval *object, zval *property, zval *value, zval *retval, binary_op_type binary_op EXECUTE_DATA_DC)
|
|
{
|
|
zval *z;
|
|
zval rv, res;
|
|
|
|
if (Z_OBJ_HT_P(object)->read_dimension &&
|
|
(z = Z_OBJ_HT_P(object)->read_dimension(object, property, BP_VAR_R, &rv)) != NULL) {
|
|
|
|
if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) {
|
|
zval rv2;
|
|
zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
|
|
|
|
if (z == &rv) {
|
|
zval_ptr_dtor(&rv);
|
|
}
|
|
ZVAL_COPY_VALUE(z, value);
|
|
}
|
|
binary_op(&res, Z_ISREF_P(z) ? Z_REFVAL_P(z) : z, value);
|
|
Z_OBJ_HT_P(object)->write_dimension(object, property, &res);
|
|
if (z == &rv) {
|
|
zval_ptr_dtor(&rv);
|
|
}
|
|
if (retval) {
|
|
ZVAL_COPY(retval, &res);
|
|
}
|
|
zval_ptr_dtor(&res);
|
|
} else {
|
|
zend_error(E_WARNING, "Attempt to assign property of non-object");
|
|
if (retval) {
|
|
ZVAL_NULL(retval);
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_never_inline zend_long zend_check_string_offset(zval *dim, int type EXECUTE_DATA_DC)
|
|
{
|
|
zend_long offset;
|
|
|
|
try_again:
|
|
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_UNDEF:
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
case IS_DOUBLE:
|
|
case IS_NULL:
|
|
case IS_FALSE:
|
|
case IS_TRUE:
|
|
zend_error(E_NOTICE, "String offset cast occurred");
|
|
break;
|
|
case IS_REFERENCE:
|
|
dim = Z_REFVAL_P(dim);
|
|
goto try_again;
|
|
default:
|
|
zend_error(E_WARNING, "Illegal offset type");
|
|
break;
|
|
}
|
|
|
|
offset = zval_get_long_func(dim);
|
|
} else {
|
|
offset = Z_LVAL_P(dim);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static zend_never_inline ZEND_COLD void zend_wrong_string_offset(EXECUTE_DATA_D)
|
|
{
|
|
const char *msg = NULL;
|
|
const zend_op *opline = EX(opline);
|
|
const zend_op *end;
|
|
uint32_t var;
|
|
|
|
switch (opline->opcode) {
|
|
case ZEND_ASSIGN_ADD:
|
|
case ZEND_ASSIGN_SUB:
|
|
case ZEND_ASSIGN_MUL:
|
|
case ZEND_ASSIGN_DIV:
|
|
case ZEND_ASSIGN_MOD:
|
|
case ZEND_ASSIGN_SL:
|
|
case ZEND_ASSIGN_SR:
|
|
case ZEND_ASSIGN_CONCAT:
|
|
case ZEND_ASSIGN_BW_OR:
|
|
case ZEND_ASSIGN_BW_AND:
|
|
case ZEND_ASSIGN_BW_XOR:
|
|
case ZEND_ASSIGN_POW:
|
|
msg = "Cannot use assign-op operators with string offsets";
|
|
break;
|
|
case ZEND_FETCH_DIM_W:
|
|
case ZEND_FETCH_DIM_RW:
|
|
case ZEND_FETCH_DIM_FUNC_ARG:
|
|
case ZEND_FETCH_DIM_UNSET:
|
|
case ZEND_FETCH_LIST_W:
|
|
/* TODO: Encode the "reason" into opline->extended_value??? */
|
|
var = opline->result.var;
|
|
opline++;
|
|
end = EG(current_execute_data)->func->op_array.opcodes +
|
|
EG(current_execute_data)->func->op_array.last;
|
|
while (opline < end) {
|
|
if (opline->op1_type == IS_VAR && opline->op1.var == var) {
|
|
switch (opline->opcode) {
|
|
case ZEND_ASSIGN_ADD:
|
|
case ZEND_ASSIGN_SUB:
|
|
case ZEND_ASSIGN_MUL:
|
|
case ZEND_ASSIGN_DIV:
|
|
case ZEND_ASSIGN_MOD:
|
|
case ZEND_ASSIGN_SL:
|
|
case ZEND_ASSIGN_SR:
|
|
case ZEND_ASSIGN_CONCAT:
|
|
case ZEND_ASSIGN_BW_OR:
|
|
case ZEND_ASSIGN_BW_AND:
|
|
case ZEND_ASSIGN_BW_XOR:
|
|
case ZEND_ASSIGN_POW:
|
|
if (opline->extended_value == ZEND_ASSIGN_OBJ) {
|
|
msg = "Cannot use string offset as an object";
|
|
} else if (opline->extended_value == ZEND_ASSIGN_DIM) {
|
|
msg = "Cannot use string offset as an array";
|
|
} else {
|
|
msg = "Cannot use assign-op operators with string offsets";
|
|
}
|
|
break;
|
|
case ZEND_PRE_INC_OBJ:
|
|
case ZEND_PRE_DEC_OBJ:
|
|
case ZEND_POST_INC_OBJ:
|
|
case ZEND_POST_DEC_OBJ:
|
|
case ZEND_PRE_INC:
|
|
case ZEND_PRE_DEC:
|
|
case ZEND_POST_INC:
|
|
case ZEND_POST_DEC:
|
|
msg = "Cannot increment/decrement string offsets";
|
|
break;
|
|
case ZEND_FETCH_DIM_W:
|
|
case ZEND_FETCH_DIM_RW:
|
|
case ZEND_FETCH_DIM_FUNC_ARG:
|
|
case ZEND_FETCH_DIM_UNSET:
|
|
case ZEND_FETCH_LIST_W:
|
|
case ZEND_ASSIGN_DIM:
|
|
msg = "Cannot use string offset as an array";
|
|
break;
|
|
case ZEND_FETCH_OBJ_W:
|
|
case ZEND_FETCH_OBJ_RW:
|
|
case ZEND_FETCH_OBJ_FUNC_ARG:
|
|
case ZEND_FETCH_OBJ_UNSET:
|
|
case ZEND_ASSIGN_OBJ:
|
|
msg = "Cannot use string offset as an object";
|
|
break;
|
|
case ZEND_ASSIGN_REF:
|
|
case ZEND_ADD_ARRAY_ELEMENT:
|
|
case ZEND_INIT_ARRAY:
|
|
case ZEND_MAKE_REF:
|
|
msg = "Cannot create references to/from string offsets";
|
|
break;
|
|
case ZEND_RETURN_BY_REF:
|
|
case ZEND_VERIFY_RETURN_TYPE:
|
|
msg = "Cannot return string offsets by reference";
|
|
break;
|
|
case ZEND_UNSET_DIM:
|
|
case ZEND_UNSET_OBJ:
|
|
msg = "Cannot unset string offsets";
|
|
break;
|
|
case ZEND_YIELD:
|
|
msg = "Cannot yield string offsets by reference";
|
|
break;
|
|
case ZEND_SEND_REF:
|
|
case ZEND_SEND_VAR_EX:
|
|
msg = "Only variables can be passed by reference";
|
|
break;
|
|
case ZEND_FE_RESET_RW:
|
|
msg = "Cannot iterate on string offsets by reference";
|
|
break;
|
|
EMPTY_SWITCH_DEFAULT_CASE();
|
|
}
|
|
break;
|
|
}
|
|
if (opline->op2_type == IS_VAR && opline->op2.var == var) {
|
|
ZEND_ASSERT(opline->opcode == ZEND_ASSIGN_REF);
|
|
msg = "Cannot create references to/from string offsets";
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
EMPTY_SWITCH_DEFAULT_CASE();
|
|
}
|
|
ZEND_ASSERT(msg != NULL);
|
|
zend_throw_error(NULL, "%s", msg);
|
|
}
|
|
|
|
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_assignment(zval *property)
|
|
{
|
|
zend_string *tmp_property_name;
|
|
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
|
|
zend_error(E_WARNING, "Attempt to assign property '%s' of non-object", ZSTR_VAL(property_name));
|
|
zend_tmp_string_release(property_name);
|
|
}
|
|
|
|
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_inc_dec(zval *property)
|
|
{
|
|
zend_string *tmp_property_name;
|
|
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
|
|
zend_error(E_WARNING, "Attempt to increment/decrement property '%s' of non-object", ZSTR_VAL(property_name));
|
|
zend_tmp_string_release(property_name);
|
|
}
|
|
|
|
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_read(zval *property)
|
|
{
|
|
zend_string *tmp_property_name;
|
|
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
|
|
zend_error(E_NOTICE, "Trying to get property '%s' of non-object", ZSTR_VAL(property_name));
|
|
zend_tmp_string_release(property_name);
|
|
}
|
|
|
|
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_unset(zval *property)
|
|
{
|
|
zend_string *tmp_property_name;
|
|
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
|
|
zend_error(E_NOTICE, "Trying to unset property '%s' of non-object", ZSTR_VAL(property_name));
|
|
zend_tmp_string_release(property_name);
|
|
}
|
|
|
|
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_check(zval *property)
|
|
{
|
|
zend_string *tmp_property_name;
|
|
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
|
|
zend_error(E_NOTICE, "Trying to check property '%s' of non-object", ZSTR_VAL(property_name));
|
|
zend_tmp_string_release(property_name);
|
|
}
|
|
|
|
static zend_never_inline void zend_assign_to_string_offset(zval *str, zval *dim, zval *value, zval *result EXECUTE_DATA_DC)
|
|
{
|
|
zend_string *old_str;
|
|
zend_uchar c;
|
|
size_t string_len;
|
|
zend_long offset;
|
|
|
|
offset = zend_check_string_offset(dim, BP_VAR_W EXECUTE_DATA_CC);
|
|
if (offset < -(zend_long)Z_STRLEN_P(str)) {
|
|
/* Error on negative offset */
|
|
zend_error(E_WARNING, "Illegal string offset: " ZEND_LONG_FMT, offset);
|
|
if (result) {
|
|
ZVAL_NULL(result);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (Z_TYPE_P(value) != IS_STRING) {
|
|
/* Convert to string, just the time to pick the 1st byte */
|
|
zend_string *tmp = zval_get_string_func(value);
|
|
|
|
string_len = ZSTR_LEN(tmp);
|
|
c = (zend_uchar)ZSTR_VAL(tmp)[0];
|
|
zend_string_release(tmp);
|
|
} else {
|
|
string_len = Z_STRLEN_P(value);
|
|
c = (zend_uchar)Z_STRVAL_P(value)[0];
|
|
}
|
|
|
|
if (string_len == 0) {
|
|
/* Error on empty input string */
|
|
zend_error(E_WARNING, "Cannot assign an empty string to a string offset");
|
|
if (result) {
|
|
ZVAL_NULL(result);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (offset < 0) { /* Handle negative offset */
|
|
offset += (zend_long)Z_STRLEN_P(str);
|
|
}
|
|
|
|
if ((size_t)offset >= Z_STRLEN_P(str)) {
|
|
/* Extend string if needed */
|
|
zend_long old_len = Z_STRLEN_P(str);
|
|
Z_STR_P(str) = zend_string_extend(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)) {
|
|
old_str = Z_STR_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;
|
|
zend_string_release(old_str);
|
|
} else {
|
|
SEPARATE_STRING(str);
|
|
zend_string_forget_hash_val(Z_STR_P(str));
|
|
}
|
|
|
|
Z_STRVAL_P(str)[offset] = c;
|
|
|
|
if (result) {
|
|
/* Return the new character */
|
|
ZVAL_INTERNED_STR(result, ZSTR_CHAR(c));
|
|
}
|
|
}
|
|
|
|
static zend_never_inline void zend_post_incdec_overloaded_property(zval *object, zval *property, void **cache_slot, int inc, zval *result)
|
|
{
|
|
if (Z_OBJ_HT_P(object)->read_property && Z_OBJ_HT_P(object)->write_property) {
|
|
zval rv, obj;
|
|
zval *z;
|
|
zval z_copy;
|
|
|
|
ZVAL_OBJ(&obj, Z_OBJ_P(object));
|
|
Z_ADDREF(obj);
|
|
z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv);
|
|
if (UNEXPECTED(EG(exception))) {
|
|
OBJ_RELEASE(Z_OBJ(obj));
|
|
ZVAL_UNDEF(result);
|
|
return;
|
|
}
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(z) == IS_OBJECT) && Z_OBJ_HT_P(z)->get) {
|
|
zval rv2;
|
|
zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
|
|
if (z == &rv) {
|
|
zval_ptr_dtor(&rv);
|
|
}
|
|
ZVAL_COPY_VALUE(z, value);
|
|
}
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(z) == IS_REFERENCE)) {
|
|
ZVAL_COPY(result, Z_REFVAL_P(z));
|
|
} else {
|
|
ZVAL_COPY(result, z);
|
|
}
|
|
ZVAL_DUP(&z_copy, result);
|
|
if (inc) {
|
|
increment_function(&z_copy);
|
|
} else {
|
|
decrement_function(&z_copy);
|
|
}
|
|
Z_OBJ_HT(obj)->write_property(&obj, property, &z_copy, cache_slot);
|
|
OBJ_RELEASE(Z_OBJ(obj));
|
|
zval_ptr_dtor(&z_copy);
|
|
zval_ptr_dtor(z);
|
|
} else {
|
|
zend_error(E_WARNING, "Attempt to increment/decrement property of non-object");
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
|
|
static zend_never_inline void zend_pre_incdec_overloaded_property(zval *object, zval *property, void **cache_slot, int inc, zval *result)
|
|
{
|
|
zval rv;
|
|
|
|
if (Z_OBJ_HT_P(object)->read_property && Z_OBJ_HT_P(object)->write_property) {
|
|
zval *z, *zptr, obj;
|
|
|
|
ZVAL_OBJ(&obj, Z_OBJ_P(object));
|
|
Z_ADDREF(obj);
|
|
zptr = z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv);
|
|
if (UNEXPECTED(EG(exception))) {
|
|
OBJ_RELEASE(Z_OBJ(obj));
|
|
if (result) {
|
|
ZVAL_UNDEF(result);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(z) == IS_OBJECT) && Z_OBJ_HT_P(z)->get) {
|
|
zval rv2;
|
|
zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
|
|
|
|
if (z == &rv) {
|
|
zval_ptr_dtor(&rv);
|
|
}
|
|
ZVAL_COPY_VALUE(z, value);
|
|
}
|
|
ZVAL_DEREF(z);
|
|
if (inc) {
|
|
increment_function(z);
|
|
} else {
|
|
decrement_function(z);
|
|
}
|
|
if (UNEXPECTED(result)) {
|
|
ZVAL_COPY(result, z);
|
|
}
|
|
Z_OBJ_HT(obj)->write_property(&obj, property, z, cache_slot);
|
|
OBJ_RELEASE(Z_OBJ(obj));
|
|
zval_ptr_dtor(zptr);
|
|
} else {
|
|
zend_error(E_WARNING, "Attempt to increment/decrement property of non-object");
|
|
if (UNEXPECTED(result)) {
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_never_inline void zend_assign_op_overloaded_property(zval *object, zval *property, void **cache_slot, zval *value, binary_op_type binary_op, zval *result)
|
|
{
|
|
zval *z;
|
|
zval rv, obj;
|
|
zval *zptr;
|
|
|
|
ZVAL_OBJ(&obj, Z_OBJ_P(object));
|
|
Z_ADDREF(obj);
|
|
if (EXPECTED(Z_OBJ_HT(obj)->read_property)) {
|
|
z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv);
|
|
if (UNEXPECTED(EG(exception))) {
|
|
OBJ_RELEASE(Z_OBJ(obj));
|
|
if (result) {
|
|
ZVAL_UNDEF(result);
|
|
}
|
|
return;
|
|
}
|
|
if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) {
|
|
zval rv2;
|
|
zval *value = Z_OBJ_HT_P(z)->get(z, &rv2);
|
|
|
|
if (z == &rv) {
|
|
zval_ptr_dtor(&rv);
|
|
}
|
|
ZVAL_COPY_VALUE(z, value);
|
|
}
|
|
zptr = z;
|
|
ZVAL_DEREF(z);
|
|
binary_op(z, z, value);
|
|
Z_OBJ_HT(obj)->write_property(&obj, property, z, cache_slot);
|
|
if (UNEXPECTED(result)) {
|
|
ZVAL_COPY(result, z);
|
|
}
|
|
zval_ptr_dtor(zptr);
|
|
} else {
|
|
zend_error(E_WARNING, "Attempt to assign property of non-object");
|
|
if (UNEXPECTED(result)) {
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
OBJ_RELEASE(Z_OBJ(obj));
|
|
}
|
|
|
|
/* Utility Functions for Extensions */
|
|
static void zend_extension_statement_handler(const zend_extension *extension, zend_execute_data *frame)
|
|
{
|
|
if (extension->statement_handler) {
|
|
extension->statement_handler(frame);
|
|
}
|
|
}
|
|
|
|
|
|
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_execute_data *frame)
|
|
{
|
|
if (extension->fcall_begin_handler) {
|
|
extension->fcall_begin_handler(frame);
|
|
}
|
|
}
|
|
|
|
|
|
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_execute_data *frame)
|
|
{
|
|
if (extension->fcall_end_handler) {
|
|
extension->fcall_end_handler(frame);
|
|
}
|
|
}
|
|
|
|
|
|
static zend_always_inline HashTable *zend_get_target_symbol_table(int fetch_type EXECUTE_DATA_DC)
|
|
{
|
|
HashTable *ht;
|
|
|
|
if (EXPECTED(fetch_type == ZEND_FETCH_GLOBAL_LOCK) ||
|
|
EXPECTED(fetch_type == ZEND_FETCH_GLOBAL)) {
|
|
ht = &EG(symbol_table);
|
|
} else {
|
|
ZEND_ASSERT(fetch_type == ZEND_FETCH_LOCAL);
|
|
if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) {
|
|
zend_rebuild_symbol_table();
|
|
}
|
|
ht = EX(symbol_table);
|
|
}
|
|
return ht;
|
|
}
|
|
|
|
static zend_always_inline zval *zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int dim_type, int type EXECUTE_DATA_DC)
|
|
{
|
|
zval *retval;
|
|
zend_string *offset_key;
|
|
zend_ulong hval;
|
|
|
|
try_again:
|
|
if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) {
|
|
hval = Z_LVAL_P(dim);
|
|
num_index:
|
|
ZEND_HASH_INDEX_FIND(ht, hval, retval, num_undef);
|
|
return retval;
|
|
num_undef:
|
|
switch (type) {
|
|
case BP_VAR_R:
|
|
zend_error(E_NOTICE,"Undefined offset: " ZEND_LONG_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_LONG_FMT, hval);
|
|
retval = zend_hash_index_update(ht, hval, &EG(uninitialized_zval));
|
|
break;
|
|
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_ex(ht, offset_key, dim_type == IS_CONST);
|
|
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", ZSTR_VAL(offset_key));
|
|
/* 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", ZSTR_VAL(offset_key));
|
|
/* 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", ZSTR_VAL(offset_key));
|
|
/* 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", ZSTR_VAL(offset_key));
|
|
retval = zend_hash_update(ht, offset_key, &EG(uninitialized_zval));
|
|
break;
|
|
case BP_VAR_W:
|
|
retval = zend_hash_add_new(ht, offset_key, &EG(uninitialized_zval));
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
switch (Z_TYPE_P(dim)) {
|
|
case IS_UNDEF:
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
/* break missing intentionally */
|
|
case IS_NULL:
|
|
offset_key = ZSTR_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_NOTICE, "Resource ID#%d used as offset, casting to integer (%d)", 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;
|
|
case IS_REFERENCE:
|
|
dim = Z_REFVAL_P(dim);
|
|
goto try_again;
|
|
default:
|
|
zend_error(E_WARNING, "Illegal offset type");
|
|
retval = (type == BP_VAR_W || type == BP_VAR_RW) ?
|
|
NULL : &EG(uninitialized_zval);
|
|
}
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_W EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_W EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_RW EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_RW EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_always_inline void zend_fetch_dimension_address(zval *result, zval *container, zval *dim, int dim_type, int type EXECUTE_DATA_DC)
|
|
{
|
|
zval *retval;
|
|
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
|
|
try_array:
|
|
SEPARATE_ARRAY(container);
|
|
fetch_from_array:
|
|
if (dim == NULL) {
|
|
retval = zend_hash_next_index_insert(Z_ARRVAL_P(container), &EG(uninitialized_zval));
|
|
if (UNEXPECTED(retval == NULL)) {
|
|
zend_error(E_WARNING, "Cannot add element to the array as the next element is already occupied");
|
|
ZVAL_ERROR(result);
|
|
return;
|
|
}
|
|
} else {
|
|
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC);
|
|
if (UNEXPECTED(!retval)) {
|
|
ZVAL_ERROR(result);
|
|
return;
|
|
}
|
|
}
|
|
ZVAL_INDIRECT(result, retval);
|
|
return;
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) {
|
|
container = Z_REFVAL_P(container);
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
|
|
goto try_array;
|
|
}
|
|
}
|
|
if (UNEXPECTED(Z_TYPE_P(container) == IS_STRING)) {
|
|
if (dim == NULL) {
|
|
zend_throw_error(NULL, "[] operator not supported for strings");
|
|
} else {
|
|
zend_check_string_offset(dim, type EXECUTE_DATA_CC);
|
|
zend_wrong_string_offset(EXECUTE_DATA_C);
|
|
}
|
|
ZVAL_ERROR(result);
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
|
|
if (/*dim_type == IS_CV &&*/ dim && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
dim = &EG(uninitialized_zval);
|
|
}
|
|
if (!Z_OBJ_HT_P(container)->read_dimension) {
|
|
zend_throw_error(NULL, "Cannot use object as array");
|
|
ZVAL_ERROR(result);
|
|
} else {
|
|
retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result);
|
|
|
|
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", ZSTR_VAL(ce->name));
|
|
} else if (EXPECTED(retval && Z_TYPE_P(retval) != IS_UNDEF)) {
|
|
if (!Z_ISREF_P(retval)) {
|
|
if (result != retval) {
|
|
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", ZSTR_VAL(ce->name));
|
|
}
|
|
} else if (UNEXPECTED(Z_REFCOUNT_P(retval) == 1)) {
|
|
ZVAL_UNREF(retval);
|
|
}
|
|
if (result != retval) {
|
|
ZVAL_INDIRECT(result, retval);
|
|
}
|
|
} else {
|
|
ZVAL_ERROR(result);
|
|
}
|
|
}
|
|
} else {
|
|
if (type != BP_VAR_W && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC);
|
|
}
|
|
if (/*dim_type == IS_CV &&*/ dim && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
}
|
|
if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) {
|
|
if (type != BP_VAR_UNSET) {
|
|
array_init(container);
|
|
goto fetch_from_array;
|
|
} else {
|
|
/* for read-mode only */
|
|
ZVAL_NULL(result);
|
|
}
|
|
} else if (EXPECTED(Z_ISERROR_P(container))) {
|
|
ZVAL_ERROR(result);
|
|
} else {
|
|
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_ERROR(result);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_W(zval *result, zval *container_ptr, zval *dim, int dim_type EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_RW(zval *result, zval *container_ptr, zval *dim, int dim_type EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_RW EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_UNSET(zval *result, zval *container_ptr, zval *dim, int dim_type EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_UNSET EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_always_inline void zend_fetch_dimension_address_read(zval *result, zval *container, zval *dim, int dim_type, int type, int support_strings, int slow EXECUTE_DATA_DC)
|
|
{
|
|
zval *retval;
|
|
|
|
if (!slow) {
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
|
|
try_array:
|
|
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC);
|
|
ZVAL_COPY(result, retval);
|
|
return;
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) {
|
|
container = Z_REFVAL_P(container);
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
|
|
goto try_array;
|
|
}
|
|
}
|
|
}
|
|
if (support_strings && EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
|
|
zend_long offset;
|
|
|
|
try_string_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) {
|
|
ZVAL_NULL(result);
|
|
return;
|
|
}
|
|
zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim));
|
|
break;
|
|
case IS_UNDEF:
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
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;
|
|
case IS_REFERENCE:
|
|
dim = Z_REFVAL_P(dim);
|
|
goto try_string_offset;
|
|
default:
|
|
zend_error(E_WARNING, "Illegal offset type");
|
|
break;
|
|
}
|
|
|
|
offset = zval_get_long_func(dim);
|
|
} else {
|
|
offset = Z_LVAL_P(dim);
|
|
}
|
|
|
|
if (UNEXPECTED(Z_STRLEN_P(container) < (size_t)((offset < 0) ? -offset : (offset + 1)))) {
|
|
if (type != BP_VAR_IS) {
|
|
zend_error(E_NOTICE, "Uninitialized string offset: " ZEND_LONG_FMT, offset);
|
|
ZVAL_EMPTY_STRING(result);
|
|
} else {
|
|
ZVAL_NULL(result);
|
|
}
|
|
} else {
|
|
zend_uchar c;
|
|
zend_long real_offset;
|
|
|
|
real_offset = (UNEXPECTED(offset < 0)) /* Handle negative offset */
|
|
? (zend_long)Z_STRLEN_P(container) + offset : offset;
|
|
c = (zend_uchar)Z_STRVAL_P(container)[real_offset];
|
|
|
|
ZVAL_INTERNED_STR(result, ZSTR_CHAR(c));
|
|
}
|
|
} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
|
|
if (/*dim_type == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
dim = &EG(uninitialized_zval);
|
|
}
|
|
if (!Z_OBJ_HT_P(container)->read_dimension) {
|
|
zend_throw_error(NULL, "Cannot use object as array");
|
|
ZVAL_NULL(result);
|
|
} else {
|
|
retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result);
|
|
|
|
ZEND_ASSERT(result != NULL);
|
|
if (retval) {
|
|
if (result != retval) {
|
|
ZVAL_COPY(result, retval);
|
|
}
|
|
} else {
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
} else {
|
|
if (type != BP_VAR_IS && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC);
|
|
}
|
|
if (/*dim_type == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
|
|
}
|
|
ZVAL_NULL(result);
|
|
}
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_read_R(zval *result, zval *container, zval *dim, int dim_type EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 1, 0 EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_read_R_slow(zval *result, zval *container, zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address_read(result, container, dim, IS_CV, BP_VAR_R, 1, 1 EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_read_IS(zval *result, zval *container, zval *dim, int dim_type EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS, 1, 0 EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_LIST_w(zval *result, zval *container, zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address(result, container, dim, IS_TMP_VAR, BP_VAR_W EXECUTE_DATA_CC);
|
|
}
|
|
|
|
static zend_never_inline void zend_fetch_dimension_address_LIST_r(zval *result, zval *container, zval *dim EXECUTE_DATA_DC)
|
|
{
|
|
zend_fetch_dimension_address_read(result, container, dim, IS_TMP_VAR, BP_VAR_R, 0, 0 EXECUTE_DATA_CC);
|
|
}
|
|
|
|
ZEND_API void zend_fetch_dimension_const(zval *result, zval *container, zval *dim, int type)
|
|
{
|
|
if (type == BP_VAR_IS) {
|
|
zend_fetch_dimension_address_read_IS(result, container, dim, IS_TMP_VAR NO_EXECUTE_DATA_CC);
|
|
} else {
|
|
zend_fetch_dimension_address_read_R(result, container, dim, IS_TMP_VAR NO_EXECUTE_DATA_CC);
|
|
}
|
|
}
|
|
|
|
static zend_always_inline void zend_fetch_property_address(zval *result, zval *container, uint32_t container_op_type, zval *prop_ptr, uint32_t prop_op_type, void **cache_slot, int type)
|
|
{
|
|
if (container_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(container) != IS_OBJECT)) {
|
|
do {
|
|
if (Z_ISREF_P(container)) {
|
|
container = Z_REFVAL_P(container);
|
|
if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* this should modify object only if it's empty */
|
|
if (type != BP_VAR_UNSET &&
|
|
EXPECTED(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 {
|
|
if (container_op_type != IS_VAR || EXPECTED(!Z_ISERROR_P(container))) {
|
|
zend_string *property_name = zval_get_string(prop_ptr);
|
|
zend_error(E_WARNING, "Attempt to modify property '%s' of non-object", ZSTR_VAL(property_name));
|
|
zend_string_release(property_name);
|
|
}
|
|
ZVAL_ERROR(result);
|
|
return;
|
|
}
|
|
} while (0);
|
|
}
|
|
if (prop_op_type == IS_CONST &&
|
|
EXPECTED(Z_OBJCE_P(container) == CACHED_PTR_EX(cache_slot))) {
|
|
uintptr_t prop_offset = (uintptr_t)CACHED_PTR_EX(cache_slot + 1);
|
|
zend_object *zobj = Z_OBJ_P(container);
|
|
zval *retval;
|
|
|
|
if (EXPECTED(IS_VALID_PROPERTY_OFFSET(prop_offset))) {
|
|
retval = OBJ_PROP(zobj, prop_offset);
|
|
if (EXPECTED(Z_TYPE_P(retval) != IS_UNDEF)) {
|
|
ZVAL_INDIRECT(result, retval);
|
|
return;
|
|
}
|
|
} else if (EXPECTED(zobj->properties != NULL)) {
|
|
if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
|
|
if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
|
|
GC_DELREF(zobj->properties);
|
|
}
|
|
zobj->properties = zend_array_dup(zobj->properties);
|
|
}
|
|
retval = zend_hash_find_ex(zobj->properties, Z_STR_P(prop_ptr), 1);
|
|
if (EXPECTED(retval)) {
|
|
ZVAL_INDIRECT(result, retval);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
if (EXPECTED(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);
|
|
if (NULL == ptr) {
|
|
if (EXPECTED(Z_OBJ_HT_P(container)->read_property)) {
|
|
use_read_property:
|
|
ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type, cache_slot, result);
|
|
if (ptr != result) {
|
|
ZVAL_INDIRECT(result, ptr);
|
|
} else if (UNEXPECTED(Z_ISREF_P(ptr) && Z_REFCOUNT_P(ptr) == 1)) {
|
|
ZVAL_UNREF(ptr);
|
|
}
|
|
} else {
|
|
zend_throw_error(NULL, "Cannot access undefined property for object with overloaded property access");
|
|
ZVAL_ERROR(result);
|
|
}
|
|
} else {
|
|
ZVAL_INDIRECT(result, ptr);
|
|
}
|
|
} else if (EXPECTED(Z_OBJ_HT_P(container)->read_property)) {
|
|
goto use_read_property;
|
|
} else {
|
|
zend_error(E_WARNING, "This object doesn't support property references");
|
|
ZVAL_ERROR(result);
|
|
}
|
|
}
|
|
|
|
static zend_always_inline zval* zend_fetch_static_property_address(zval *varname, zend_uchar varname_type, znode_op op2, zend_uchar op2_type, int type EXECUTE_DATA_DC OPLINE_DC)
|
|
{
|
|
zval *retval;
|
|
zend_string *name, *tmp_name;
|
|
zend_class_entry *ce;
|
|
|
|
if (varname_type == IS_CONST) {
|
|
name = Z_STR_P(varname);
|
|
} else if (EXPECTED(Z_TYPE_P(varname) == IS_STRING)) {
|
|
name = Z_STR_P(varname);
|
|
tmp_name = NULL;
|
|
} else {
|
|
if (varname_type == IS_CV && UNEXPECTED(Z_TYPE_P(varname) == IS_UNDEF)) {
|
|
zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC);
|
|
}
|
|
name = zval_get_tmp_string(varname, &tmp_name);
|
|
}
|
|
|
|
if (op2_type == IS_CONST) {
|
|
if (varname_type == IS_CONST && EXPECTED((ce = CACHED_PTR(Z_CACHE_SLOT_P(varname))) != NULL)) {
|
|
retval = CACHED_PTR(Z_CACHE_SLOT_P(varname) + sizeof(void*));
|
|
|
|
/* check if static properties were destoyed */
|
|
if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
|
|
if (type != BP_VAR_IS) {
|
|
zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
return retval;
|
|
} else {
|
|
zval *class_name = RT_CONSTANT(opline, op2);
|
|
|
|
if (UNEXPECTED((ce = CACHED_PTR(Z_CACHE_SLOT_P(class_name))) == NULL)) {
|
|
ce = zend_fetch_class_by_name(Z_STR_P(class_name), class_name + 1, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
|
|
if (UNEXPECTED(ce == NULL)) {
|
|
if (varname_type != IS_CONST) {
|
|
zend_tmp_string_release(tmp_name);
|
|
}
|
|
return NULL;
|
|
}
|
|
CACHE_PTR(Z_CACHE_SLOT_P(class_name), ce);
|
|
}
|
|
}
|
|
} else {
|
|
if (op2_type == IS_UNUSED) {
|
|
ce = zend_fetch_class(NULL, op2.num);
|
|
if (UNEXPECTED(ce == NULL)) {
|
|
if (varname_type != IS_CONST) {
|
|
zend_tmp_string_release(tmp_name);
|
|
}
|
|
return NULL;
|
|
}
|
|
} else {
|
|
ce = Z_CE_P(EX_VAR(op2.var));
|
|
}
|
|
if (varname_type == IS_CONST &&
|
|
EXPECTED(CACHED_PTR(Z_CACHE_SLOT_P(varname)) == ce)) {
|
|
retval = CACHED_PTR(Z_CACHE_SLOT_P(varname) + sizeof(void*));
|
|
|
|
/* check if static properties were destoyed */
|
|
if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
|
|
if (type != BP_VAR_IS) {
|
|
zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
}
|
|
|
|
retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
|
|
|
|
if (varname_type != IS_CONST) {
|
|
zend_tmp_string_release(tmp_name);
|
|
}
|
|
|
|
if (UNEXPECTED(retval == NULL)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (varname_type == IS_CONST) {
|
|
CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(varname), ce, retval);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
#if ZEND_INTENSIVE_DEBUGGING
|
|
|
|
#define CHECK_SYMBOL_TABLES() \
|
|
zend_hash_apply(&EG(symbol_table), zend_check_symbol); \
|
|
if (&EG(symbol_table)!=EX(symbol_table)) { \
|
|
zend_hash_apply(EX(symbol_table), zend_check_symbol); \
|
|
}
|
|
|
|
static int zend_check_symbol(zval *pz)
|
|
{
|
|
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 ZEND_WIN32
|
|
fflush(stderr);
|
|
#endif
|
|
} else if (Z_TYPE_P(pz) == IS_ARRAY) {
|
|
zend_hash_apply(Z_ARRVAL_P(pz), zend_check_symbol);
|
|
} 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);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#else
|
|
#define CHECK_SYMBOL_TABLES()
|
|
#endif
|
|
|
|
ZEND_API void execute_internal(zend_execute_data *execute_data, zval *return_value)
|
|
{
|
|
execute_data->func->internal_function.handler(execute_data, return_value);
|
|
}
|
|
|
|
ZEND_API void zend_clean_and_cache_symbol_table(zend_array *symbol_table) /* {{{ */
|
|
{
|
|
if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) {
|
|
zend_array_destroy(symbol_table);
|
|
} else {
|
|
/* clean before putting into the cache, since clean
|
|
could call dtors, which could use cached hash */
|
|
zend_symtable_clean(symbol_table);
|
|
*(++EG(symtable_cache_ptr)) = symbol_table;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline void i_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
|
|
{
|
|
zval *cv = EX_VAR_NUM(0);
|
|
int count = EX(func)->op_array.last_var;
|
|
while (EXPECTED(count != 0)) {
|
|
if (Z_REFCOUNTED_P(cv)) {
|
|
zend_refcounted *r = Z_COUNTED_P(cv);
|
|
if (!GC_DELREF(r)) {
|
|
ZVAL_NULL(cv);
|
|
zval_dtor_func(r);
|
|
} else {
|
|
gc_check_possible_root(r);
|
|
}
|
|
}
|
|
cv++;
|
|
count--;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
|
|
{
|
|
i_free_compiled_variables(execute_data);
|
|
}
|
|
/* }}} */
|
|
|
|
#define ZEND_VM_INTERRUPT_CHECK() do { \
|
|
if (UNEXPECTED(EG(vm_interrupt))) { \
|
|
ZEND_VM_INTERRUPT(); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define ZEND_VM_LOOP_INTERRUPT_CHECK() do { \
|
|
if (UNEXPECTED(EG(vm_interrupt))) { \
|
|
ZEND_VM_LOOP_INTERRUPT(); \
|
|
} \
|
|
} while (0)
|
|
|
|
/*
|
|
* 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_never_inline void zend_copy_extra_args(EXECUTE_DATA_D)
|
|
{
|
|
zend_op_array *op_array = &EX(func)->op_array;
|
|
uint32_t first_extra_arg = op_array->num_args;
|
|
uint32_t num_args = EX_NUM_ARGS();
|
|
zval *src;
|
|
size_t delta;
|
|
uint32_t count;
|
|
uint32_t type_flags = 0;
|
|
|
|
if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
|
|
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
|
|
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
|
|
opline += first_extra_arg;
|
|
#else
|
|
EX(opline) += first_extra_arg;
|
|
#endif
|
|
|
|
}
|
|
|
|
/* move extra args into separate array after all CV and TMP vars */
|
|
src = EX_VAR_NUM(num_args - 1);
|
|
delta = op_array->last_var + op_array->T - first_extra_arg;
|
|
count = num_args - first_extra_arg;
|
|
if (EXPECTED(delta != 0)) {
|
|
delta *= sizeof(zval);
|
|
do {
|
|
type_flags |= Z_TYPE_INFO_P(src);
|
|
ZVAL_COPY_VALUE((zval*)(((char*)src) + delta), src);
|
|
ZVAL_UNDEF(src);
|
|
src--;
|
|
} while (--count);
|
|
} else {
|
|
do {
|
|
type_flags |= Z_TYPE_INFO_P(src);
|
|
src--;
|
|
} while (--count);
|
|
}
|
|
ZEND_ADD_CALL_FLAG(execute_data, ((type_flags >> Z_TYPE_FLAGS_SHIFT) & IS_TYPE_REFCOUNTED));
|
|
}
|
|
|
|
static zend_always_inline void zend_init_cvs(uint32_t first, uint32_t last EXECUTE_DATA_DC)
|
|
{
|
|
if (EXPECTED(first < last)) {
|
|
uint32_t count = last - first;
|
|
zval *var = EX_VAR_NUM(first);
|
|
|
|
do {
|
|
ZVAL_UNDEF(var);
|
|
var++;
|
|
} while (--count);
|
|
}
|
|
}
|
|
|
|
static zend_always_inline void i_init_func_execute_data(zend_op_array *op_array, zval *return_value, zend_bool may_be_trampoline EXECUTE_DATA_DC) /* {{{ */
|
|
{
|
|
uint32_t first_extra_arg, num_args;
|
|
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
|
|
|
|
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
|
|
opline = op_array->opcodes;
|
|
#else
|
|
EX(opline) = op_array->opcodes;
|
|
#endif
|
|
EX(call) = NULL;
|
|
EX(return_value) = return_value;
|
|
|
|
/* Handle arguments */
|
|
first_extra_arg = op_array->num_args;
|
|
num_args = EX_NUM_ARGS();
|
|
if (UNEXPECTED(num_args > first_extra_arg)) {
|
|
if (!may_be_trampoline || EXPECTED(!(op_array->fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))) {
|
|
zend_copy_extra_args(EXECUTE_DATA_C);
|
|
}
|
|
} else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
|
|
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
|
|
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
|
|
opline += num_args;
|
|
#else
|
|
EX(opline) += num_args;
|
|
#endif
|
|
}
|
|
|
|
/* Initialize CV variables (skip arguments) */
|
|
zend_init_cvs(num_args, op_array->last_var EXECUTE_DATA_CC);
|
|
|
|
EX_LOAD_RUN_TIME_CACHE(op_array);
|
|
|
|
EG(current_execute_data) = execute_data;
|
|
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
|
|
EX(opline) = opline;
|
|
#endif
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_never_inline void ZEND_FASTCALL init_func_run_time_cache(zend_op_array *op_array) /* {{{ */
|
|
{
|
|
ZEND_ASSERT(op_array->run_time_cache == NULL);
|
|
op_array->run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size);
|
|
memset(op_array->run_time_cache, 0, op_array->cache_size);
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline void i_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
|
|
{
|
|
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
|
|
|
|
EX(opline) = op_array->opcodes;
|
|
EX(call) = NULL;
|
|
EX(return_value) = return_value;
|
|
|
|
zend_attach_symbol_table(execute_data);
|
|
|
|
if (!op_array->run_time_cache) {
|
|
op_array->run_time_cache = emalloc(op_array->cache_size);
|
|
memset(op_array->run_time_cache, 0, op_array->cache_size);
|
|
}
|
|
EX_LOAD_RUN_TIME_CACHE(op_array);
|
|
|
|
EG(current_execute_data) = execute_data;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_init_func_execute_data(zend_execute_data *ex, zend_op_array *op_array, zval *return_value) /* {{{ */
|
|
{
|
|
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
|
|
zend_execute_data *orig_execute_data = execute_data;
|
|
const zend_op *orig_opline = opline;
|
|
execute_data = ex;
|
|
#else
|
|
zend_execute_data *execute_data = ex;
|
|
#endif
|
|
|
|
EX(prev_execute_data) = EG(current_execute_data);
|
|
if (!op_array->run_time_cache) {
|
|
op_array->run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size);
|
|
memset(op_array->run_time_cache, 0, op_array->cache_size);
|
|
}
|
|
i_init_func_execute_data(op_array, return_value, 1 EXECUTE_DATA_CC);
|
|
|
|
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
|
|
EX(opline) = opline;
|
|
opline = orig_opline;
|
|
execute_data = orig_execute_data;
|
|
#endif
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
|
|
{
|
|
EX(prev_execute_data) = EG(current_execute_data);
|
|
if (!op_array->run_time_cache) {
|
|
op_array->run_time_cache = emalloc(op_array->cache_size);
|
|
memset(op_array->run_time_cache, 0, op_array->cache_size);
|
|
}
|
|
i_init_code_execute_data(execute_data, op_array, return_value);
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_init_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
|
|
{
|
|
if (EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE) {
|
|
zend_init_code_execute_data(execute_data, op_array, return_value);
|
|
} else {
|
|
zend_init_func_execute_data(execute_data, op_array, return_value);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline zend_bool zend_is_by_ref_func_arg_fetch(const zend_op *opline, zend_execute_data *call) /* {{{ */
|
|
{
|
|
uint32_t arg_num = opline->extended_value & ZEND_FETCH_ARG_MASK;
|
|
|
|
if (EXPECTED(arg_num <= MAX_ARG_FLAG_NUM)) {
|
|
return QUICK_ARG_SHOULD_BE_SENT_BY_REF(call->func, arg_num);
|
|
}
|
|
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) /* {{{ */
|
|
{
|
|
zend_execute_data *new_call;
|
|
int used_stack = (EG(vm_stack_top) - (zval*)call) + additional_args;
|
|
|
|
/* copy call frame into new stack segment */
|
|
new_call = zend_vm_stack_extend(used_stack * sizeof(zval));
|
|
*new_call = *call;
|
|
ZEND_ADD_CALL_FLAG(new_call, ZEND_CALL_ALLOCATED);
|
|
|
|
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(vm_stack)->prev->top = (zval*)call;
|
|
|
|
/* delete previous stack segment if it becames empty */
|
|
if (UNEXPECTED(EG(vm_stack)->prev->top == ZEND_VM_STACK_ELEMENTS(EG(vm_stack)->prev))) {
|
|
zend_vm_stack r = EG(vm_stack)->prev;
|
|
|
|
EG(vm_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) /* {{{ */
|
|
{
|
|
if (EXPECTED((uint32_t)(EG(vm_stack_end) - EG(vm_stack_top)) > additional_args)) {
|
|
EG(vm_stack_top) += additional_args;
|
|
} else {
|
|
*call = zend_vm_stack_copy_call_frame(*call, passed_args, additional_args);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_always_inline zend_generator *zend_get_running_generator(EXECUTE_DATA_D) /* {{{ */
|
|
{
|
|
/* The generator object is stored in EX(return_value) */
|
|
zend_generator *generator = (zend_generator *) EX(return_value);
|
|
/* However control may currently be delegated to another generator.
|
|
* That's the one we're interested in. */
|
|
return generator;
|
|
}
|
|
/* }}} */
|
|
|
|
static void cleanup_unfinished_calls(zend_execute_data *execute_data, uint32_t op_num) /* {{{ */
|
|
{
|
|
if (UNEXPECTED(EX(call))) {
|
|
zend_execute_data *call = EX(call);
|
|
zend_op *opline = EX(func)->op_array.opcodes + op_num;
|
|
int level;
|
|
int do_exit;
|
|
|
|
if (UNEXPECTED(opline->opcode == ZEND_INIT_FCALL ||
|
|
opline->opcode == ZEND_INIT_FCALL_BY_NAME ||
|
|
opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME ||
|
|
opline->opcode == ZEND_INIT_DYNAMIC_CALL ||
|
|
opline->opcode == ZEND_INIT_USER_CALL ||
|
|
opline->opcode == ZEND_INIT_METHOD_CALL ||
|
|
opline->opcode == ZEND_INIT_STATIC_METHOD_CALL ||
|
|
opline->opcode == ZEND_NEW)) {
|
|
ZEND_ASSERT(op_num);
|
|
opline--;
|
|
}
|
|
|
|
do {
|
|
/* If the exception was thrown during a function call there might be
|
|
* arguments pushed to the stack that have to be dtor'ed. */
|
|
|
|
/* find the number of actually passed arguments */
|
|
level = 0;
|
|
do_exit = 0;
|
|
do {
|
|
switch (opline->opcode) {
|
|
case ZEND_DO_FCALL:
|
|
case ZEND_DO_ICALL:
|
|
case ZEND_DO_UCALL:
|
|
case ZEND_DO_FCALL_BY_NAME:
|
|
level++;
|
|
break;
|
|
case ZEND_INIT_FCALL:
|
|
case ZEND_INIT_FCALL_BY_NAME:
|
|
case ZEND_INIT_NS_FCALL_BY_NAME:
|
|
case ZEND_INIT_DYNAMIC_CALL:
|
|
case ZEND_INIT_USER_CALL:
|
|
case ZEND_INIT_METHOD_CALL:
|
|
case ZEND_INIT_STATIC_METHOD_CALL:
|
|
case ZEND_NEW:
|
|
if (level == 0) {
|
|
ZEND_CALL_NUM_ARGS(call) = 0;
|
|
do_exit = 1;
|
|
}
|
|
level--;
|
|
break;
|
|
case ZEND_SEND_VAL:
|
|
case ZEND_SEND_VAL_EX:
|
|
case ZEND_SEND_VAR:
|
|
case ZEND_SEND_VAR_EX:
|
|
case ZEND_SEND_REF:
|
|
case ZEND_SEND_VAR_NO_REF:
|
|
case ZEND_SEND_VAR_NO_REF_EX:
|
|
case ZEND_SEND_USER:
|
|
if (level == 0) {
|
|
ZEND_CALL_NUM_ARGS(call) = opline->op2.num;
|
|
do_exit = 1;
|
|
}
|
|
break;
|
|
case ZEND_SEND_ARRAY:
|
|
case ZEND_SEND_UNPACK:
|
|
if (level == 0) {
|
|
do_exit = 1;
|
|
}
|
|
break;
|
|
}
|
|
if (!do_exit) {
|
|
opline--;
|
|
}
|
|
} while (!do_exit);
|
|
if (call->prev_execute_data) {
|
|
/* skip current call region */
|
|
level = 0;
|
|
do_exit = 0;
|
|
do {
|
|
switch (opline->opcode) {
|
|
case ZEND_DO_FCALL:
|
|
case ZEND_DO_ICALL:
|
|
case ZEND_DO_UCALL:
|
|
case ZEND_DO_FCALL_BY_NAME:
|
|
level++;
|
|
break;
|
|
case ZEND_INIT_FCALL:
|
|
case ZEND_INIT_FCALL_BY_NAME:
|
|
case ZEND_INIT_NS_FCALL_BY_NAME:
|
|
case ZEND_INIT_DYNAMIC_CALL:
|
|
case ZEND_INIT_USER_CALL:
|
|
case ZEND_INIT_METHOD_CALL:
|
|
case ZEND_INIT_STATIC_METHOD_CALL:
|
|
case ZEND_NEW:
|
|
if (level == 0) {
|
|
do_exit = 1;
|
|
}
|
|
level--;
|
|
break;
|
|
}
|
|
opline--;
|
|
} while (!do_exit);
|
|
}
|
|
|
|
zend_vm_stack_free_args(EX(call));
|
|
|
|
if (ZEND_CALL_INFO(call) & ZEND_CALL_RELEASE_THIS) {
|
|
if (ZEND_CALL_INFO(call) & ZEND_CALL_CTOR) {
|
|
GC_DELREF(Z_OBJ(call->This));
|
|
if (GC_REFCOUNT(Z_OBJ(call->This)) == 1) {
|
|
zend_object_store_ctor_failed(Z_OBJ(call->This));
|
|
}
|
|
}
|
|
OBJ_RELEASE(Z_OBJ(call->This));
|
|
}
|
|
if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) {
|
|
zend_object_release((zend_object *) call->func->common.prototype);
|
|
} else if (call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
|
|
zend_string_release(call->func->common.function_name);
|
|
zend_free_trampoline(call->func);
|
|
}
|
|
|
|
EX(call) = call->prev_execute_data;
|
|
zend_vm_stack_free_call_frame(call);
|
|
call = EX(call);
|
|
} while (call);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void cleanup_live_vars(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) /* {{{ */
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < EX(func)->op_array.last_live_range; i++) {
|
|
const zend_live_range *range = &EX(func)->op_array.live_range[i];
|
|
if (range->start > op_num) {
|
|
/* further blocks will not be relevant... */
|
|
break;
|
|
} else if (op_num < range->end) {
|
|
if (!catch_op_num || catch_op_num >= range->end) {
|
|
uint32_t kind = range->var & ZEND_LIVE_MASK;
|
|
uint32_t var_num = range->var & ~ZEND_LIVE_MASK;
|
|
zval *var = EX_VAR(var_num);
|
|
|
|
if (kind == ZEND_LIVE_TMPVAR) {
|
|
zval_ptr_dtor_nogc(var);
|
|
} else if (kind == ZEND_LIVE_LOOP) {
|
|
if (Z_TYPE_P(var) != IS_ARRAY && Z_FE_ITER_P(var) != (uint32_t)-1) {
|
|
zend_hash_iterator_del(Z_FE_ITER_P(var));
|
|
}
|
|
zval_ptr_dtor_nogc(var);
|
|
} else if (kind == ZEND_LIVE_ROPE) {
|
|
zend_string **rope = (zend_string **)var;
|
|
zend_op *last = EX(func)->op_array.opcodes + op_num;
|
|
while ((last->opcode != ZEND_ROPE_ADD && last->opcode != ZEND_ROPE_INIT)
|
|
|| last->result.var != var_num) {
|
|
ZEND_ASSERT(last >= EX(func)->op_array.opcodes);
|
|
last--;
|
|
}
|
|
if (last->opcode == ZEND_ROPE_INIT) {
|
|
zend_string_release(*rope);
|
|
} else {
|
|
int j = last->extended_value;
|
|
do {
|
|
zend_string_release(rope[j]);
|
|
} while (j--);
|
|
}
|
|
} else if (kind == ZEND_LIVE_SILENCE) {
|
|
/* restore previous error_reporting value */
|
|
if (!EG(error_reporting) && Z_LVAL_P(var) != 0) {
|
|
EG(error_reporting) = Z_LVAL_P(var);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_cleanup_unfinished_execution(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) {
|
|
cleanup_unfinished_calls(execute_data, op_num);
|
|
cleanup_live_vars(execute_data, op_num, catch_op_num);
|
|
}
|
|
|
|
static void zend_swap_operands(zend_op *op) /* {{{ */
|
|
{
|
|
znode_op tmp;
|
|
zend_uchar tmp_type;
|
|
|
|
tmp = op->op1;
|
|
tmp_type = op->op1_type;
|
|
op->op1 = op->op2;
|
|
op->op1_type = op->op2_type;
|
|
op->op2 = tmp;
|
|
op->op2_type = tmp_type;
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_never_inline zend_execute_data *zend_init_dynamic_call_string(zend_string *function, uint32_t num_args) /* {{{ */
|
|
{
|
|
zend_function *fbc;
|
|
zval *func;
|
|
zend_class_entry *called_scope;
|
|
zend_string *lcname;
|
|
const char *colon;
|
|
|
|
if ((colon = zend_memrchr(ZSTR_VAL(function), ':', ZSTR_LEN(function))) != NULL &&
|
|
colon > ZSTR_VAL(function) &&
|
|
*(colon-1) == ':'
|
|
) {
|
|
zend_string *mname;
|
|
size_t cname_length = colon - ZSTR_VAL(function) - 1;
|
|
size_t mname_length = ZSTR_LEN(function) - cname_length - (sizeof("::") - 1);
|
|
|
|
lcname = zend_string_init(ZSTR_VAL(function), cname_length, 0);
|
|
|
|
called_scope = zend_fetch_class_by_name(lcname, NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
|
|
if (UNEXPECTED(called_scope == NULL)) {
|
|
zend_string_release(lcname);
|
|
return NULL;
|
|
}
|
|
|
|
mname = zend_string_init(ZSTR_VAL(function) + (cname_length + sizeof("::") - 1), mname_length, 0);
|
|
|
|
if (called_scope->get_static_method) {
|
|
fbc = called_scope->get_static_method(called_scope, mname);
|
|
} else {
|
|
fbc = zend_std_get_static_method(called_scope, mname, NULL);
|
|
}
|
|
if (UNEXPECTED(fbc == NULL)) {
|
|
if (EXPECTED(!EG(exception))) {
|
|
zend_throw_error(NULL, "Call to undefined method %s::%s()", ZSTR_VAL(called_scope->name), ZSTR_VAL(mname));
|
|
}
|
|
zend_string_release(lcname);
|
|
zend_string_release(mname);
|
|
return NULL;
|
|
}
|
|
|
|
zend_string_release(lcname);
|
|
zend_string_release(mname);
|
|
|
|
if (UNEXPECTED(!(fbc->common.fn_flags & ZEND_ACC_STATIC))) {
|
|
if (fbc->common.fn_flags & ZEND_ACC_ALLOW_STATIC) {
|
|
zend_error(E_DEPRECATED,
|
|
"Non-static method %s::%s() should not be called statically",
|
|
ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
|
|
if (UNEXPECTED(EG(exception) != NULL)) {
|
|
return NULL;
|
|
}
|
|
} else {
|
|
zend_throw_error(
|
|
zend_ce_error,
|
|
"Non-static method %s::%s() cannot be called statically",
|
|
ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
|
|
return NULL;
|
|
}
|
|
}
|
|
} else {
|
|
if (ZSTR_VAL(function)[0] == '\\') {
|
|
lcname = zend_string_alloc(ZSTR_LEN(function) - 1, 0);
|
|
zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(function) + 1, ZSTR_LEN(function) - 1);
|
|
} else {
|
|
lcname = zend_string_tolower(function);
|
|
}
|
|
if (UNEXPECTED((func = zend_hash_find(EG(function_table), lcname)) == NULL)) {
|
|
zend_throw_error(NULL, "Call to undefined function %s()", ZSTR_VAL(function));
|
|
zend_string_release(lcname);
|
|
return NULL;
|
|
}
|
|
zend_string_release(lcname);
|
|
|
|
fbc = Z_FUNC_P(func);
|
|
called_scope = NULL;
|
|
}
|
|
|
|
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) {
|
|
init_func_run_time_cache(&fbc->op_array);
|
|
}
|
|
|
|
return zend_vm_stack_push_call_frame(ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC,
|
|
fbc, num_args, called_scope, NULL);
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_never_inline zend_execute_data *zend_init_dynamic_call_object(zval *function, uint32_t num_args) /* {{{ */
|
|
{
|
|
zend_function *fbc;
|
|
zend_class_entry *called_scope;
|
|
zend_object *object;
|
|
uint32_t call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC;
|
|
|
|
if (EXPECTED(Z_OBJ_HANDLER_P(function, get_closure)) &&
|
|
EXPECTED(Z_OBJ_HANDLER_P(function, get_closure)(function, &called_scope, &fbc, &object) == SUCCESS)) {
|
|
|
|
if (fbc->common.fn_flags & ZEND_ACC_CLOSURE) {
|
|
/* Delay closure destruction until its invocation */
|
|
ZEND_ASSERT(GC_TYPE((zend_object*)fbc->common.prototype) == IS_OBJECT);
|
|
GC_ADDREF((zend_object*)fbc->common.prototype);
|
|
call_info |= ZEND_CALL_CLOSURE;
|
|
if (fbc->common.fn_flags & ZEND_ACC_FAKE_CLOSURE) {
|
|
call_info |= ZEND_CALL_FAKE_CLOSURE;
|
|
}
|
|
} else if (object) {
|
|
call_info |= ZEND_CALL_RELEASE_THIS;
|
|
GC_ADDREF(object); /* For $this pointer */
|
|
}
|
|
} else {
|
|
zend_throw_error(NULL, "Function name must be a string");
|
|
return NULL;
|
|
}
|
|
|
|
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) {
|
|
init_func_run_time_cache(&fbc->op_array);
|
|
}
|
|
|
|
return zend_vm_stack_push_call_frame(call_info,
|
|
fbc, num_args, called_scope, object);
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_never_inline zend_execute_data *zend_init_dynamic_call_array(zend_array *function, uint32_t num_args) /* {{{ */
|
|
{
|
|
zend_function *fbc;
|
|
zend_class_entry *called_scope;
|
|
zend_object *object;
|
|
uint32_t call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC;
|
|
|
|
if (zend_hash_num_elements(function) == 2) {
|
|
zval *obj;
|
|
zval *method;
|
|
obj = zend_hash_index_find(function, 0);
|
|
method = zend_hash_index_find(function, 1);
|
|
|
|
if (UNEXPECTED(!obj) || UNEXPECTED(!method)) {
|
|
zend_throw_error(NULL, "Array callback has to contain indices 0 and 1");
|
|
return NULL;
|
|
}
|
|
|
|
ZVAL_DEREF(obj);
|
|
if (UNEXPECTED(Z_TYPE_P(obj) != IS_STRING) && UNEXPECTED(Z_TYPE_P(obj) != IS_OBJECT)) {
|
|
zend_throw_error(NULL, "First array member is not a valid class name or object");
|
|
return NULL;
|
|
}
|
|
|
|
ZVAL_DEREF(method);
|
|
if (UNEXPECTED(Z_TYPE_P(method) != IS_STRING)) {
|
|
zend_throw_error(NULL, "Second array member is not a valid method");
|
|
return NULL;
|
|
}
|
|
|
|
if (Z_TYPE_P(obj) == IS_STRING) {
|
|
object = NULL;
|
|
called_scope = zend_fetch_class_by_name(Z_STR_P(obj), NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
|
|
if (UNEXPECTED(called_scope == NULL)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (called_scope->get_static_method) {
|
|
fbc = called_scope->get_static_method(called_scope, Z_STR_P(method));
|
|
} else {
|
|
fbc = zend_std_get_static_method(called_scope, Z_STR_P(method), NULL);
|
|
}
|
|
if (UNEXPECTED(fbc == NULL)) {
|
|
if (EXPECTED(!EG(exception))) {
|
|
zend_throw_error(NULL, "Call to undefined method %s::%s()", ZSTR_VAL(called_scope->name), Z_STRVAL_P(method));
|
|
}
|
|
return NULL;
|
|
}
|
|
if (!(fbc->common.fn_flags & ZEND_ACC_STATIC)) {
|
|
if (fbc->common.fn_flags & ZEND_ACC_ALLOW_STATIC) {
|
|
zend_error(E_DEPRECATED,
|
|
"Non-static method %s::%s() should not be called statically",
|
|
ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
|
|
if (UNEXPECTED(EG(exception) != NULL)) {
|
|
return NULL;
|
|
}
|
|
} else {
|
|
zend_throw_error(
|
|
zend_ce_error,
|
|
"Non-static method %s::%s() cannot be called statically",
|
|
ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
|
|
return NULL;
|
|
}
|
|
}
|
|
} else {
|
|
called_scope = Z_OBJCE_P(obj);
|
|
object = Z_OBJ_P(obj);
|
|
|
|
fbc = Z_OBJ_HT_P(obj)->get_method(&object, Z_STR_P(method), NULL);
|
|
if (UNEXPECTED(fbc == NULL)) {
|
|
if (EXPECTED(!EG(exception))) {
|
|
zend_throw_error(NULL, "Call to undefined method %s::%s()", ZSTR_VAL(object->ce->name), Z_STRVAL_P(method));
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
if ((fbc->common.fn_flags & ZEND_ACC_STATIC) != 0) {
|
|
object = NULL;
|
|
} else {
|
|
call_info |= ZEND_CALL_RELEASE_THIS;
|
|
GC_ADDREF(object); /* For $this pointer */
|
|
}
|
|
}
|
|
} else {
|
|
zend_throw_error(NULL, "Function name must be a string");
|
|
return NULL;
|
|
}
|
|
|
|
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) {
|
|
init_func_run_time_cache(&fbc->op_array);
|
|
}
|
|
|
|
return zend_vm_stack_push_call_frame(call_info,
|
|
fbc, num_args, called_scope, object);
|
|
}
|
|
/* }}} */
|
|
|
|
#define ZEND_FAKE_OP_ARRAY ((zend_op_array*)(zend_intptr_t)-1)
|
|
|
|
static zend_never_inline zend_op_array* ZEND_FASTCALL zend_include_or_eval(zval *inc_filename, int type) /* {{{ */
|
|
{
|
|
zend_op_array *new_op_array = NULL;
|
|
zval tmp_inc_filename;
|
|
|
|
ZVAL_UNDEF(&tmp_inc_filename);
|
|
if (Z_TYPE_P(inc_filename) != IS_STRING) {
|
|
ZVAL_STR(&tmp_inc_filename, zval_get_string_func(inc_filename));
|
|
inc_filename = &tmp_inc_filename;
|
|
}
|
|
|
|
if (type != ZEND_EVAL && strlen(Z_STRVAL_P(inc_filename)) != Z_STRLEN_P(inc_filename)) {
|
|
if (type == ZEND_INCLUDE_ONCE || type == ZEND_INCLUDE) {
|
|
zend_message_dispatcher(ZMSG_FAILED_INCLUDE_FOPEN, Z_STRVAL_P(inc_filename));
|
|
} else {
|
|
zend_message_dispatcher(ZMSG_FAILED_REQUIRE_FOPEN, Z_STRVAL_P(inc_filename));
|
|
}
|
|
} else {
|
|
switch (type) {
|
|
case ZEND_INCLUDE_ONCE:
|
|
case ZEND_REQUIRE_ONCE: {
|
|
zend_file_handle file_handle;
|
|
zend_string *resolved_path;
|
|
|
|
resolved_path = zend_resolve_path(Z_STRVAL_P(inc_filename), Z_STRLEN_P(inc_filename));
|
|
if (resolved_path) {
|
|
if (zend_hash_exists(&EG(included_files), resolved_path)) {
|
|
goto already_compiled;
|
|
}
|
|
} else {
|
|
resolved_path = zend_string_copy(Z_STR_P(inc_filename));
|
|
}
|
|
|
|
if (SUCCESS == zend_stream_open(ZSTR_VAL(resolved_path), &file_handle)) {
|
|
|
|
if (!file_handle.opened_path) {
|
|
file_handle.opened_path = zend_string_copy(resolved_path);
|
|
}
|
|
|
|
if (zend_hash_add_empty_element(&EG(included_files), file_handle.opened_path)) {
|
|
zend_op_array *op_array = zend_compile_file(&file_handle, (type==ZEND_INCLUDE_ONCE?ZEND_INCLUDE:ZEND_REQUIRE));
|
|
zend_destroy_file_handle(&file_handle);
|
|
zend_string_release(resolved_path);
|
|
if (Z_TYPE(tmp_inc_filename) != IS_UNDEF) {
|
|
zend_string_release(Z_STR(tmp_inc_filename));
|
|
}
|
|
return op_array;
|
|
} else {
|
|
zend_file_handle_dtor(&file_handle);
|
|
already_compiled:
|
|
new_op_array = ZEND_FAKE_OP_ARRAY;
|
|
}
|
|
} else {
|
|
if (type == ZEND_INCLUDE_ONCE) {
|
|
zend_message_dispatcher(ZMSG_FAILED_INCLUDE_FOPEN, Z_STRVAL_P(inc_filename));
|
|
} else {
|
|
zend_message_dispatcher(ZMSG_FAILED_REQUIRE_FOPEN, Z_STRVAL_P(inc_filename));
|
|
}
|
|
}
|
|
zend_string_release(resolved_path);
|
|
}
|
|
break;
|
|
case ZEND_INCLUDE:
|
|
case ZEND_REQUIRE:
|
|
new_op_array = compile_filename(type, inc_filename);
|
|
break;
|
|
case ZEND_EVAL: {
|
|
char *eval_desc = zend_make_compiled_string_description("eval()'d code");
|
|
new_op_array = zend_compile_string(inc_filename, eval_desc);
|
|
efree(eval_desc);
|
|
}
|
|
break;
|
|
EMPTY_SWITCH_DEFAULT_CASE()
|
|
}
|
|
}
|
|
if (Z_TYPE(tmp_inc_filename) != IS_UNDEF) {
|
|
zend_string_release(Z_STR(tmp_inc_filename));
|
|
}
|
|
return new_op_array;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API int ZEND_FASTCALL zend_do_fcall_overloaded(zend_execute_data *call, zval *ret) /* {{{ */
|
|
{
|
|
zend_function *fbc = call->func;
|
|
zend_object *object;
|
|
|
|
/* Not sure what should be done here if it's a static method */
|
|
if (UNEXPECTED(Z_TYPE(call->This) != IS_OBJECT)) {
|
|
zend_vm_stack_free_args(call);
|
|
if (fbc->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) {
|
|
zend_string_release(fbc->common.function_name);
|
|
}
|
|
efree(fbc);
|
|
zend_vm_stack_free_call_frame(call);
|
|
|
|
zend_throw_error(NULL, "Cannot call overloaded function for non-object");
|
|
return 0;
|
|
}
|
|
|
|
object = Z_OBJ(call->This);
|
|
|
|
ZVAL_NULL(ret);
|
|
|
|
EG(current_execute_data) = call;
|
|
object->handlers->call_method(fbc->common.function_name, object, call, ret);
|
|
EG(current_execute_data) = call->prev_execute_data;
|
|
|
|
zend_vm_stack_free_args(call);
|
|
|
|
if (fbc->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) {
|
|
zend_string_release(fbc->common.function_name);
|
|
}
|
|
efree(fbc);
|
|
|
|
return 1;
|
|
}
|
|
/* }}} */
|
|
|
|
#define ZEND_VM_NEXT_OPCODE_EX(check_exception, skip) \
|
|
CHECK_SYMBOL_TABLES() \
|
|
if (check_exception) { \
|
|
OPLINE = EX(opline) + (skip); \
|
|
} else { \
|
|
OPLINE = opline + (skip); \
|
|
} \
|
|
ZEND_VM_CONTINUE()
|
|
|
|
#define ZEND_VM_NEXT_OPCODE_CHECK_EXCEPTION() \
|
|
ZEND_VM_NEXT_OPCODE_EX(1, 1)
|
|
|
|
#define ZEND_VM_NEXT_OPCODE() \
|
|
ZEND_VM_NEXT_OPCODE_EX(0, 1)
|
|
|
|
#define ZEND_VM_SET_NEXT_OPCODE(new_op) \
|
|
CHECK_SYMBOL_TABLES() \
|
|
OPLINE = new_op
|
|
|
|
#define ZEND_VM_SET_OPCODE(new_op) \
|
|
CHECK_SYMBOL_TABLES() \
|
|
OPLINE = new_op; \
|
|
ZEND_VM_INTERRUPT_CHECK()
|
|
|
|
#define ZEND_VM_SET_RELATIVE_OPCODE(opline, offset) \
|
|
ZEND_VM_SET_OPCODE(ZEND_OFFSET_TO_OPLINE(opline, offset))
|
|
|
|
#define ZEND_VM_JMP(new_op) do { \
|
|
if (UNEXPECTED(EG(exception))) { \
|
|
HANDLE_EXCEPTION(); \
|
|
} \
|
|
ZEND_VM_SET_OPCODE(new_op); \
|
|
ZEND_VM_CONTINUE(); \
|
|
} while (0)
|
|
|
|
#define ZEND_VM_INC_OPCODE() \
|
|
OPLINE++
|
|
|
|
|
|
#ifndef VM_SMART_OPCODES
|
|
# define VM_SMART_OPCODES 1
|
|
#endif
|
|
|
|
#if VM_SMART_OPCODES
|
|
# define ZEND_VM_REPEATABLE_OPCODE \
|
|
do {
|
|
# define ZEND_VM_REPEAT_OPCODE(_opcode) \
|
|
} while (UNEXPECTED((++opline)->opcode == _opcode)); \
|
|
OPLINE = opline; \
|
|
ZEND_VM_CONTINUE()
|
|
# define ZEND_VM_SMART_BRANCH(_result, _check) do { \
|
|
int __result; \
|
|
if (EXPECTED((opline+1)->opcode == ZEND_JMPZ)) { \
|
|
__result = (_result); \
|
|
} else if (EXPECTED((opline+1)->opcode == ZEND_JMPNZ)) { \
|
|
__result = !(_result); \
|
|
} else { \
|
|
break; \
|
|
} \
|
|
if ((_check) && UNEXPECTED(EG(exception))) { \
|
|
ZVAL_UNDEF(EX_VAR(opline->result.var)); \
|
|
HANDLE_EXCEPTION(); \
|
|
} \
|
|
if (__result) { \
|
|
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
|
|
} else { \
|
|
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
|
|
} \
|
|
ZEND_VM_CONTINUE(); \
|
|
} while (0)
|
|
# define ZEND_VM_SMART_BRANCH_JMPZ(_result, _check) do { \
|
|
if ((_check) && UNEXPECTED(EG(exception))) { \
|
|
ZVAL_UNDEF(EX_VAR(opline->result.var)); \
|
|
HANDLE_EXCEPTION(); \
|
|
} \
|
|
if (_result) { \
|
|
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
|
|
} else { \
|
|
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
|
|
} \
|
|
ZEND_VM_CONTINUE(); \
|
|
} while (0)
|
|
# define ZEND_VM_SMART_BRANCH_JMPNZ(_result, _check) do { \
|
|
if ((_check) && UNEXPECTED(EG(exception))) { \
|
|
ZVAL_UNDEF(EX_VAR(opline->result.var)); \
|
|
HANDLE_EXCEPTION(); \
|
|
} \
|
|
if (!(_result)) { \
|
|
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
|
|
} else { \
|
|
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
|
|
} \
|
|
ZEND_VM_CONTINUE(); \
|
|
} while (0)
|
|
#else
|
|
# define ZEND_VM_REPEATABLE_OPCODE
|
|
# define ZEND_VM_REPEAT_OPCODE(_opcode)
|
|
# define ZEND_VM_SMART_BRANCH(_result, _check)
|
|
# define ZEND_VM_SMART_BRANCH_JMPZ(_result, _check)
|
|
# define ZEND_VM_SMART_BRANCH_JMPNZ(_result, _check)
|
|
#endif
|
|
|
|
#ifdef __GNUC__
|
|
# define ZEND_VM_GUARD(name) __asm__("#" #name)
|
|
#else
|
|
# define ZEND_VM_GUARD(name)
|
|
#endif
|
|
|
|
#define GET_OP1_UNDEF_CV(ptr, type) \
|
|
_get_zval_cv_lookup_ ## type(ptr, opline->op1.var EXECUTE_DATA_CC)
|
|
#define GET_OP2_UNDEF_CV(ptr, type) \
|
|
_get_zval_cv_lookup_ ## type(ptr, opline->op2.var EXECUTE_DATA_CC)
|
|
|
|
#define UNDEF_RESULT() do { \
|
|
if (opline->result_type & (IS_VAR | IS_TMP_VAR)) { \
|
|
ZVAL_UNDEF(EX_VAR(opline->result.var)); \
|
|
} \
|
|
} while (0)
|
|
|
|
#if ZEND_GCC_VERSION >= 4000
|
|
# pragma GCC push_options
|
|
# pragma GCC optimize("no-gcse")
|
|
# pragma GCC optimize("no-ivopts")
|
|
#endif
|
|
|
|
#include "zend_vm_execute.h"
|
|
|
|
#if ZEND_GCC_VERSION >= 4000
|
|
# pragma GCC pop_options
|
|
#endif
|
|
|
|
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(const zend_op *opline, int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
|
|
{
|
|
zval *ret;
|
|
|
|
switch (op_type) {
|
|
case IS_CONST:
|
|
ret = RT_CONSTANT(opline, *node);
|
|
*should_free = NULL;
|
|
break;
|
|
case IS_TMP_VAR:
|
|
case IS_VAR:
|
|
ret = EX_VAR(node->var);
|
|
*should_free = ret;
|
|
break;
|
|
case IS_CV:
|
|
ret = EX_VAR(node->var);
|
|
*should_free = NULL;
|
|
break;
|
|
default:
|
|
ret = NULL;
|
|
*should_free = ret;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
ZEND_API void ZEND_FASTCALL zend_check_internal_arg_type(zend_function *zf, uint32_t arg_num, zval *arg)
|
|
{
|
|
void *dummy_cache_slot = NULL;
|
|
|
|
zend_verify_arg_type(zf, arg_num, arg, NULL, &dummy_cache_slot);
|
|
}
|
|
|
|
ZEND_API int ZEND_FASTCALL zend_check_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value, void **cache_slot)
|
|
{
|
|
return zend_verify_arg_type(zf, arg_num, arg, default_value, cache_slot);
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
* vim600: sw=4 ts=4 fdm=marker
|
|
* vim<600: sw=4 ts=4
|
|
*/
|