mirror of
https://github.com/php/php-src.git
synced 2024-09-24 19:37:26 +00:00
88eae43ff9
The DECLARE_(ANON_)INHERITED_CLASS(_DELAYED) opcodes were referencing the parent ce VAR through extended_value. This is hacky and we can't track the def-use chain in SSA. To avoid this, the layout of declaration opcodes is changed as follows: op1 points to the lcname and rtd_key literals, in that order. (For anon/lambda declarations only one of lcname or rtd_key is present.) This frees up op2, which is now used to reference the parent ce VAR in inheriting declarations. The jmp offset for anon class declarations is moved frop op2 to extended_value. The changes were applied both to class and function declarations to keep everything symmetric.
821 lines
24 KiB
C
821 lines
24 KiB
C
/*
|
|
+----------------------------------------------------------------------+
|
|
| Zend Engine |
|
|
+----------------------------------------------------------------------+
|
|
| Copyright (c) 1998-2015 Zend Technologies Ltd. (http://www.zend.com) |
|
|
+----------------------------------------------------------------------+
|
|
| This source file is subject to version 2.00 of the Zend license, |
|
|
| that is bundled with this package in the file LICENSE, and is |
|
|
| available through the world-wide-web at the following url: |
|
|
| http://www.zend.com/license/2_00.txt. |
|
|
| If you did not receive a copy of the Zend license and are unable to |
|
|
| obtain it through the world-wide-web, please send a note to |
|
|
| license@zend.com so we can mail you a copy immediately. |
|
|
+----------------------------------------------------------------------+
|
|
| Authors: Andi Gutmans <andi@zend.com> |
|
|
| Zeev Suraski <zeev@zend.com> |
|
|
| Dmitry Stogov <dmitry@zend.com> |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
/* $Id$ */
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "zend.h"
|
|
#include "zend_alloc.h"
|
|
#include "zend_compile.h"
|
|
#include "zend_extensions.h"
|
|
#include "zend_API.h"
|
|
|
|
#include "zend_vm.h"
|
|
|
|
static void zend_extension_op_array_ctor_handler(zend_extension *extension, zend_op_array *op_array)
|
|
{
|
|
if (extension->op_array_ctor) {
|
|
extension->op_array_ctor(op_array);
|
|
}
|
|
}
|
|
|
|
static void zend_extension_op_array_dtor_handler(zend_extension *extension, zend_op_array *op_array)
|
|
{
|
|
if (extension->op_array_dtor) {
|
|
extension->op_array_dtor(op_array);
|
|
}
|
|
}
|
|
|
|
static void op_array_alloc_ops(zend_op_array *op_array, uint32_t size)
|
|
{
|
|
op_array->opcodes = erealloc(op_array->opcodes, size * sizeof(zend_op));
|
|
}
|
|
|
|
void init_op_array(zend_op_array *op_array, zend_uchar type, int initial_ops_size)
|
|
{
|
|
op_array->type = type;
|
|
op_array->arg_flags[0] = 0;
|
|
op_array->arg_flags[1] = 0;
|
|
op_array->arg_flags[2] = 0;
|
|
|
|
op_array->refcount = (uint32_t *) emalloc(sizeof(uint32_t));
|
|
*op_array->refcount = 1;
|
|
op_array->last = 0;
|
|
op_array->opcodes = NULL;
|
|
op_array_alloc_ops(op_array, initial_ops_size);
|
|
|
|
op_array->last_var = 0;
|
|
op_array->vars = NULL;
|
|
|
|
op_array->T = 0;
|
|
|
|
op_array->function_name = NULL;
|
|
op_array->filename = zend_get_compiled_filename();
|
|
op_array->doc_comment = NULL;
|
|
|
|
op_array->arg_info = NULL;
|
|
op_array->num_args = 0;
|
|
op_array->required_num_args = 0;
|
|
|
|
op_array->scope = NULL;
|
|
op_array->prototype = NULL;
|
|
|
|
op_array->live_range = NULL;
|
|
op_array->try_catch_array = NULL;
|
|
op_array->last_live_range = 0;
|
|
|
|
op_array->static_variables = NULL;
|
|
op_array->last_try_catch = 0;
|
|
|
|
op_array->this_var = -1;
|
|
|
|
op_array->fn_flags = 0;
|
|
|
|
op_array->early_binding = -1;
|
|
|
|
op_array->last_literal = 0;
|
|
op_array->literals = NULL;
|
|
|
|
op_array->run_time_cache = NULL;
|
|
op_array->cache_size = 0;
|
|
|
|
memset(op_array->reserved, 0, ZEND_MAX_RESERVED_RESOURCES * sizeof(void*));
|
|
|
|
if (zend_extension_flags & ZEND_EXTENSIONS_HAVE_OP_ARRAY_CTOR) {
|
|
zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) zend_extension_op_array_ctor_handler, op_array);
|
|
}
|
|
}
|
|
|
|
ZEND_API void destroy_zend_function(zend_function *function)
|
|
{
|
|
if (function->type == ZEND_USER_FUNCTION) {
|
|
destroy_op_array(&function->op_array);
|
|
} else {
|
|
ZEND_ASSERT(function->type == ZEND_INTERNAL_FUNCTION);
|
|
ZEND_ASSERT(function->common.function_name);
|
|
zend_string_release(function->common.function_name);
|
|
}
|
|
}
|
|
|
|
ZEND_API void zend_function_dtor(zval *zv)
|
|
{
|
|
zend_function *function = Z_PTR_P(zv);
|
|
|
|
if (function->type == ZEND_USER_FUNCTION) {
|
|
ZEND_ASSERT(function->common.function_name);
|
|
destroy_op_array(&function->op_array);
|
|
/* op_arrays are allocated on arena, so we don't have to free them */
|
|
} else {
|
|
ZEND_ASSERT(function->type == ZEND_INTERNAL_FUNCTION);
|
|
ZEND_ASSERT(function->common.function_name);
|
|
zend_string_release(function->common.function_name);
|
|
if (!(function->common.fn_flags & ZEND_ACC_ARENA_ALLOCATED)) {
|
|
pefree(function, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
ZEND_API void zend_cleanup_op_array_data(zend_op_array *op_array)
|
|
{
|
|
if (op_array->static_variables &&
|
|
!(GC_FLAGS(op_array->static_variables) & IS_ARRAY_IMMUTABLE)) {
|
|
zend_hash_clean(op_array->static_variables);
|
|
}
|
|
}
|
|
|
|
ZEND_API void zend_cleanup_user_class_data(zend_class_entry *ce)
|
|
{
|
|
/* Clean all parts that can contain run-time data */
|
|
/* Note that only run-time accessed data need to be cleaned up, pre-defined data can
|
|
not contain objects and thus are not probelmatic */
|
|
if (ce->ce_flags & ZEND_HAS_STATIC_IN_METHODS) {
|
|
zend_function *func;
|
|
|
|
ZEND_HASH_FOREACH_PTR(&ce->function_table, func) {
|
|
if (func->type == ZEND_USER_FUNCTION) {
|
|
zend_cleanup_op_array_data((zend_op_array *) func);
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
}
|
|
if (ce->static_members_table) {
|
|
zval *static_members = ce->static_members_table;
|
|
zval *p = static_members;
|
|
zval *end = p + ce->default_static_members_count;
|
|
|
|
|
|
ce->default_static_members_count = 0;
|
|
ce->default_static_members_table = ce->static_members_table = NULL;
|
|
while (p != end) {
|
|
i_zval_ptr_dtor(p ZEND_FILE_LINE_CC);
|
|
p++;
|
|
}
|
|
efree(static_members);
|
|
}
|
|
}
|
|
|
|
ZEND_API void zend_cleanup_internal_class_data(zend_class_entry *ce)
|
|
{
|
|
if (CE_STATIC_MEMBERS(ce)) {
|
|
zval *static_members = CE_STATIC_MEMBERS(ce);
|
|
zval *p = static_members;
|
|
zval *end = p + ce->default_static_members_count;
|
|
|
|
#ifdef ZTS
|
|
CG(static_members_table)[(zend_intptr_t)(ce->static_members_table)] = NULL;
|
|
#else
|
|
ce->static_members_table = NULL;
|
|
#endif
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
while (p != end) {
|
|
i_zval_ptr_dtor(p ZEND_FILE_LINE_CC);
|
|
p++;
|
|
}
|
|
efree(static_members);
|
|
}
|
|
}
|
|
|
|
void _destroy_zend_class_traits_info(zend_class_entry *ce)
|
|
{
|
|
if (ce->num_traits > 0 && ce->traits) {
|
|
efree(ce->traits);
|
|
}
|
|
|
|
if (ce->trait_aliases) {
|
|
size_t i = 0;
|
|
while (ce->trait_aliases[i]) {
|
|
if (ce->trait_aliases[i]->trait_method) {
|
|
if (ce->trait_aliases[i]->trait_method->method_name) {
|
|
zend_string_release(ce->trait_aliases[i]->trait_method->method_name);
|
|
}
|
|
if (ce->trait_aliases[i]->trait_method->class_name) {
|
|
zend_string_release(ce->trait_aliases[i]->trait_method->class_name);
|
|
}
|
|
efree(ce->trait_aliases[i]->trait_method);
|
|
}
|
|
|
|
if (ce->trait_aliases[i]->alias) {
|
|
zend_string_release(ce->trait_aliases[i]->alias);
|
|
}
|
|
|
|
efree(ce->trait_aliases[i]);
|
|
i++;
|
|
}
|
|
|
|
efree(ce->trait_aliases);
|
|
}
|
|
|
|
if (ce->trait_precedences) {
|
|
size_t i = 0;
|
|
|
|
while (ce->trait_precedences[i]) {
|
|
zend_string_release(ce->trait_precedences[i]->trait_method->method_name);
|
|
zend_string_release(ce->trait_precedences[i]->trait_method->class_name);
|
|
efree(ce->trait_precedences[i]->trait_method);
|
|
|
|
if (ce->trait_precedences[i]->exclude_from_classes) {
|
|
size_t j = 0;
|
|
zend_trait_precedence *cur_precedence = ce->trait_precedences[i];
|
|
while (cur_precedence->exclude_from_classes[j].class_name) {
|
|
zend_string_release(cur_precedence->exclude_from_classes[j].class_name);
|
|
j++;
|
|
}
|
|
efree(ce->trait_precedences[i]->exclude_from_classes);
|
|
}
|
|
efree(ce->trait_precedences[i]);
|
|
i++;
|
|
}
|
|
efree(ce->trait_precedences);
|
|
}
|
|
}
|
|
|
|
ZEND_API void destroy_zend_class(zval *zv)
|
|
{
|
|
zend_property_info *prop_info;
|
|
zend_class_entry *ce = Z_PTR_P(zv);
|
|
|
|
if (--ce->refcount > 0) {
|
|
return;
|
|
}
|
|
switch (ce->type) {
|
|
case ZEND_USER_CLASS:
|
|
if (ce->default_properties_table) {
|
|
zval *p = ce->default_properties_table;
|
|
zval *end = p + ce->default_properties_count;
|
|
|
|
while (p != end) {
|
|
i_zval_ptr_dtor(p ZEND_FILE_LINE_CC);
|
|
p++;
|
|
}
|
|
efree(ce->default_properties_table);
|
|
}
|
|
if (ce->default_static_members_table) {
|
|
zval *p = ce->default_static_members_table;
|
|
zval *end = p + ce->default_static_members_count;
|
|
|
|
while (p != end) {
|
|
i_zval_ptr_dtor(p ZEND_FILE_LINE_CC);
|
|
p++;
|
|
}
|
|
efree(ce->default_static_members_table);
|
|
}
|
|
ZEND_HASH_FOREACH_PTR(&ce->properties_info, prop_info) {
|
|
if (prop_info->ce == ce || (prop_info->flags & ZEND_ACC_SHADOW)) {
|
|
zend_string_release(prop_info->name);
|
|
if (prop_info->doc_comment) {
|
|
zend_string_release(prop_info->doc_comment);
|
|
}
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
zend_hash_destroy(&ce->properties_info);
|
|
zend_string_release(ce->name);
|
|
zend_hash_destroy(&ce->function_table);
|
|
if (zend_hash_num_elements(&ce->constants_table)) {
|
|
zend_class_constant *c;
|
|
|
|
ZEND_HASH_FOREACH_PTR(&ce->constants_table, c) {
|
|
zval_ptr_dtor(&c->value);
|
|
if (c->doc_comment && c->ce == ce) {
|
|
zend_string_release(c->doc_comment);
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
zend_hash_destroy(&ce->constants_table);
|
|
}
|
|
if (ce->num_interfaces > 0 && ce->interfaces) {
|
|
efree(ce->interfaces);
|
|
}
|
|
if (ce->info.user.doc_comment) {
|
|
zend_string_release(ce->info.user.doc_comment);
|
|
}
|
|
|
|
_destroy_zend_class_traits_info(ce);
|
|
|
|
break;
|
|
case ZEND_INTERNAL_CLASS:
|
|
if (ce->default_properties_table) {
|
|
zval *p = ce->default_properties_table;
|
|
zval *end = p + ce->default_properties_count;
|
|
|
|
while (p != end) {
|
|
zval_internal_ptr_dtor(p);
|
|
p++;
|
|
}
|
|
free(ce->default_properties_table);
|
|
}
|
|
if (ce->default_static_members_table) {
|
|
zval *p = ce->default_static_members_table;
|
|
zval *end = p + ce->default_static_members_count;
|
|
|
|
while (p != end) {
|
|
zval_internal_ptr_dtor(p);
|
|
p++;
|
|
}
|
|
free(ce->default_static_members_table);
|
|
}
|
|
zend_hash_destroy(&ce->properties_info);
|
|
zend_string_release(ce->name);
|
|
zend_hash_destroy(&ce->function_table);
|
|
if (zend_hash_num_elements(&ce->constants_table)) {
|
|
zend_class_constant *c;
|
|
|
|
ZEND_HASH_FOREACH_PTR(&ce->constants_table, c) {
|
|
zval_internal_ptr_dtor(&c->value);
|
|
if (c->doc_comment && c->ce == ce) {
|
|
zend_string_release(c->doc_comment);
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
zend_hash_destroy(&ce->constants_table);
|
|
}
|
|
if (ce->num_interfaces > 0) {
|
|
free(ce->interfaces);
|
|
}
|
|
free(ce);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void zend_class_add_ref(zval *zv)
|
|
{
|
|
zend_class_entry *ce = Z_PTR_P(zv);
|
|
|
|
ce->refcount++;
|
|
}
|
|
|
|
ZEND_API void destroy_op_array(zend_op_array *op_array)
|
|
{
|
|
zval *literal = op_array->literals;
|
|
zval *end;
|
|
uint32_t i;
|
|
|
|
if (op_array->static_variables &&
|
|
!(GC_FLAGS(op_array->static_variables) & IS_ARRAY_IMMUTABLE)) {
|
|
if (--GC_REFCOUNT(op_array->static_variables) == 0) {
|
|
zend_array_destroy(op_array->static_variables);
|
|
}
|
|
}
|
|
|
|
if (op_array->run_time_cache && !op_array->function_name) {
|
|
efree(op_array->run_time_cache);
|
|
op_array->run_time_cache = NULL;
|
|
}
|
|
|
|
if (!op_array->refcount || --(*op_array->refcount) > 0) {
|
|
return;
|
|
}
|
|
|
|
efree_size(op_array->refcount, sizeof(*(op_array->refcount)));
|
|
|
|
if (op_array->vars) {
|
|
i = op_array->last_var;
|
|
while (i > 0) {
|
|
i--;
|
|
zend_string_release(op_array->vars[i]);
|
|
}
|
|
efree(op_array->vars);
|
|
}
|
|
|
|
if (literal) {
|
|
end = literal + op_array->last_literal;
|
|
while (literal < end) {
|
|
zval_ptr_dtor_nogc(literal);
|
|
literal++;
|
|
}
|
|
efree(op_array->literals);
|
|
}
|
|
efree(op_array->opcodes);
|
|
|
|
if (op_array->function_name) {
|
|
zend_string_release(op_array->function_name);
|
|
}
|
|
if (op_array->doc_comment) {
|
|
zend_string_release(op_array->doc_comment);
|
|
}
|
|
if (op_array->live_range) {
|
|
efree(op_array->live_range);
|
|
}
|
|
if (op_array->try_catch_array) {
|
|
efree(op_array->try_catch_array);
|
|
}
|
|
if (zend_extension_flags & ZEND_EXTENSIONS_HAVE_OP_ARRAY_DTOR) {
|
|
if (op_array->fn_flags & ZEND_ACC_DONE_PASS_TWO) {
|
|
zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) zend_extension_op_array_dtor_handler, op_array);
|
|
}
|
|
}
|
|
if (op_array->arg_info) {
|
|
int32_t num_args = op_array->num_args;
|
|
zend_arg_info *arg_info = op_array->arg_info;
|
|
int32_t i;
|
|
|
|
if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
|
|
arg_info--;
|
|
num_args++;
|
|
}
|
|
if (op_array->fn_flags & ZEND_ACC_VARIADIC) {
|
|
num_args++;
|
|
}
|
|
for (i = 0 ; i < num_args; i++) {
|
|
if (arg_info[i].name) {
|
|
zend_string_release(arg_info[i].name);
|
|
}
|
|
if (arg_info[i].class_name) {
|
|
zend_string_release(arg_info[i].class_name);
|
|
}
|
|
}
|
|
efree(arg_info);
|
|
}
|
|
}
|
|
|
|
void init_op(zend_op *op)
|
|
{
|
|
memset(op, 0, sizeof(zend_op));
|
|
op->lineno = CG(zend_lineno);
|
|
SET_UNUSED(op->result);
|
|
}
|
|
|
|
zend_op *get_next_op(zend_op_array *op_array)
|
|
{
|
|
uint32_t next_op_num = op_array->last++;
|
|
zend_op *next_op;
|
|
|
|
if (next_op_num >= CG(context).opcodes_size) {
|
|
CG(context).opcodes_size *= 4;
|
|
op_array_alloc_ops(op_array, CG(context).opcodes_size);
|
|
}
|
|
|
|
next_op = &(op_array->opcodes[next_op_num]);
|
|
|
|
init_op(next_op);
|
|
|
|
return next_op;
|
|
}
|
|
|
|
int get_next_op_number(zend_op_array *op_array)
|
|
{
|
|
return op_array->last;
|
|
}
|
|
|
|
zend_brk_cont_element *get_next_brk_cont_element(void)
|
|
{
|
|
CG(context).last_brk_cont++;
|
|
CG(context).brk_cont_array = erealloc(CG(context).brk_cont_array, sizeof(zend_brk_cont_element) * CG(context).last_brk_cont);
|
|
return &CG(context).brk_cont_array[CG(context).last_brk_cont-1];
|
|
}
|
|
|
|
static void zend_update_extended_info(zend_op_array *op_array)
|
|
{
|
|
zend_op *opline = op_array->opcodes, *end=opline+op_array->last;
|
|
|
|
while (opline<end) {
|
|
if (opline->opcode == ZEND_EXT_STMT) {
|
|
if (opline+1<end) {
|
|
if ((opline+1)->opcode == ZEND_EXT_STMT) {
|
|
opline->opcode = ZEND_NOP;
|
|
opline++;
|
|
continue;
|
|
}
|
|
if (opline+1<end) {
|
|
opline->lineno = (opline+1)->lineno;
|
|
}
|
|
} else {
|
|
opline->opcode = ZEND_NOP;
|
|
}
|
|
}
|
|
opline++;
|
|
}
|
|
}
|
|
|
|
static void zend_extension_op_array_handler(zend_extension *extension, zend_op_array *op_array)
|
|
{
|
|
if (extension->op_array_handler) {
|
|
extension->op_array_handler(op_array);
|
|
}
|
|
}
|
|
|
|
static void zend_check_finally_breakout(zend_op_array *op_array, uint32_t op_num, uint32_t dst_num)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < op_array->last_try_catch; i++) {
|
|
if ((op_num < op_array->try_catch_array[i].finally_op ||
|
|
op_num >= op_array->try_catch_array[i].finally_end)
|
|
&& (dst_num >= op_array->try_catch_array[i].finally_op &&
|
|
dst_num <= op_array->try_catch_array[i].finally_end)) {
|
|
CG(in_compilation) = 1;
|
|
CG(active_op_array) = op_array;
|
|
CG(zend_lineno) = op_array->opcodes[op_num].lineno;
|
|
zend_error_noreturn(E_COMPILE_ERROR, "jump into a finally block is disallowed");
|
|
} else if ((op_num >= op_array->try_catch_array[i].finally_op
|
|
&& op_num <= op_array->try_catch_array[i].finally_end)
|
|
&& (dst_num > op_array->try_catch_array[i].finally_end
|
|
|| dst_num < op_array->try_catch_array[i].finally_op)) {
|
|
CG(in_compilation) = 1;
|
|
CG(active_op_array) = op_array;
|
|
CG(zend_lineno) = op_array->opcodes[op_num].lineno;
|
|
zend_error_noreturn(E_COMPILE_ERROR, "jump out of a finally block is disallowed");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void zend_resolve_fast_call(zend_op_array *op_array, uint32_t op_num)
|
|
{
|
|
int i;
|
|
uint32_t finally_num = (uint32_t)-1;
|
|
|
|
for (i = 0; i < op_array->last_try_catch; i++) {
|
|
if (op_num >= op_array->try_catch_array[i].finally_op
|
|
&& op_num < op_array->try_catch_array[i].finally_end) {
|
|
finally_num = i;
|
|
}
|
|
}
|
|
|
|
if (finally_num != (uint32_t)-1) {
|
|
/* Must be ZEND_FAST_CALL */
|
|
ZEND_ASSERT(op_array->opcodes[op_array->try_catch_array[finally_num].finally_op - 2].opcode == ZEND_FAST_CALL);
|
|
op_array->opcodes[op_num].extended_value = ZEND_FAST_CALL_FROM_FINALLY;
|
|
op_array->opcodes[op_num].op2.num = finally_num;
|
|
}
|
|
}
|
|
|
|
static void zend_resolve_finally_ret(zend_op_array *op_array, uint32_t op_num)
|
|
{
|
|
int i;
|
|
uint32_t finally_num = (uint32_t)-1;
|
|
uint32_t catch_num = (uint32_t)-1;
|
|
|
|
for (i = 0; i < op_array->last_try_catch; i++) {
|
|
if (op_array->try_catch_array[i].try_op > op_num) {
|
|
break;
|
|
}
|
|
if (op_num < op_array->try_catch_array[i].finally_op) {
|
|
finally_num = i;
|
|
}
|
|
if (op_num < op_array->try_catch_array[i].catch_op) {
|
|
catch_num = i;
|
|
}
|
|
}
|
|
|
|
if (finally_num != (uint32_t)-1 &&
|
|
(catch_num == (uint32_t)-1 ||
|
|
op_array->try_catch_array[catch_num].catch_op >=
|
|
op_array->try_catch_array[finally_num].finally_op)) {
|
|
/* in case of unhandled exception return to upward finally block */
|
|
op_array->opcodes[op_num].extended_value = ZEND_FAST_RET_TO_FINALLY;
|
|
op_array->opcodes[op_num].op2.num = finally_num;
|
|
} else if (catch_num != (uint32_t)-1) {
|
|
/* in case of unhandled exception return to upward catch block */
|
|
op_array->opcodes[op_num].extended_value = ZEND_FAST_RET_TO_CATCH;
|
|
op_array->opcodes[op_num].op2.num = catch_num;
|
|
}
|
|
}
|
|
|
|
static uint32_t zend_get_brk_cont_target(const zend_op_array *op_array, const zend_op *opline) {
|
|
int nest_levels = opline->op2.num;
|
|
int array_offset = opline->op1.num;
|
|
zend_brk_cont_element *jmp_to;
|
|
do {
|
|
jmp_to = &CG(context).brk_cont_array[array_offset];
|
|
if (nest_levels > 1) {
|
|
array_offset = jmp_to->parent;
|
|
}
|
|
} while (--nest_levels > 0);
|
|
|
|
return opline->opcode == ZEND_BRK ? jmp_to->brk : jmp_to->cont;
|
|
}
|
|
|
|
ZEND_API int pass_two(zend_op_array *op_array)
|
|
{
|
|
zend_op *opline, *end;
|
|
|
|
if (!ZEND_USER_CODE(op_array->type)) {
|
|
return 0;
|
|
}
|
|
if (CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO) {
|
|
zend_update_extended_info(op_array);
|
|
}
|
|
if (CG(compiler_options) & ZEND_COMPILE_HANDLE_OP_ARRAY) {
|
|
if (zend_extension_flags & ZEND_EXTENSIONS_HAVE_OP_ARRAY_PERSIST) {
|
|
zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) zend_extension_op_array_handler, op_array);
|
|
}
|
|
}
|
|
|
|
if (CG(context).vars_size != op_array->last_var) {
|
|
op_array->vars = (zend_string**) erealloc(op_array->vars, sizeof(zend_string*)*op_array->last_var);
|
|
CG(context).vars_size = op_array->last_var;
|
|
}
|
|
if (CG(context).opcodes_size != op_array->last) {
|
|
op_array->opcodes = (zend_op *) erealloc(op_array->opcodes, sizeof(zend_op)*op_array->last);
|
|
CG(context).opcodes_size = op_array->last;
|
|
}
|
|
if (CG(context).literals_size != op_array->last_literal) {
|
|
op_array->literals = (zval*)erealloc(op_array->literals, sizeof(zval) * op_array->last_literal);
|
|
CG(context).literals_size = op_array->last_literal;
|
|
}
|
|
opline = op_array->opcodes;
|
|
end = opline + op_array->last;
|
|
while (opline < end) {
|
|
switch (opline->opcode) {
|
|
case ZEND_FAST_CALL:
|
|
opline->op1.opline_num = op_array->try_catch_array[opline->op1.num].finally_op;
|
|
zend_resolve_fast_call(op_array, opline - op_array->opcodes);
|
|
ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, opline->op1);
|
|
break;
|
|
case ZEND_FAST_RET:
|
|
zend_resolve_finally_ret(op_array, opline - op_array->opcodes);
|
|
break;
|
|
case ZEND_BRK:
|
|
case ZEND_CONT:
|
|
{
|
|
uint32_t jmp_target = zend_get_brk_cont_target(op_array, opline);
|
|
|
|
if (op_array->fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK) {
|
|
zend_check_finally_breakout(op_array, opline - op_array->opcodes, jmp_target);
|
|
}
|
|
opline->opcode = ZEND_JMP;
|
|
opline->op1.opline_num = jmp_target;
|
|
opline->op2.num = 0;
|
|
ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, opline->op1);
|
|
}
|
|
break;
|
|
case ZEND_GOTO:
|
|
zend_resolve_goto_label(op_array, opline);
|
|
if (op_array->fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK) {
|
|
zend_check_finally_breakout(op_array, opline - op_array->opcodes, opline->op1.opline_num);
|
|
}
|
|
/* break omitted intentionally */
|
|
case ZEND_JMP:
|
|
ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, opline->op1);
|
|
break;
|
|
case ZEND_JMPZNZ:
|
|
/* absolute index to relative offset */
|
|
opline->extended_value = ZEND_OPLINE_NUM_TO_OFFSET(op_array, opline, opline->extended_value);
|
|
/* break omitted intentionally */
|
|
case ZEND_JMPZ:
|
|
case ZEND_JMPNZ:
|
|
case ZEND_JMPZ_EX:
|
|
case ZEND_JMPNZ_EX:
|
|
case ZEND_JMP_SET:
|
|
case ZEND_COALESCE:
|
|
case ZEND_NEW:
|
|
case ZEND_FE_RESET_R:
|
|
case ZEND_FE_RESET_RW:
|
|
ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, opline->op2);
|
|
break;
|
|
case ZEND_ASSERT_CHECK:
|
|
/* If result of assert is unused, result of check is unused as well */
|
|
if (op_array->opcodes[opline->op2.opline_num - 1].result_type & EXT_TYPE_UNUSED) {
|
|
opline->result_type |= EXT_TYPE_UNUSED;
|
|
}
|
|
ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, opline->op2);
|
|
break;
|
|
case ZEND_DECLARE_ANON_CLASS:
|
|
case ZEND_DECLARE_ANON_INHERITED_CLASS:
|
|
case ZEND_CATCH:
|
|
case ZEND_FE_FETCH_R:
|
|
case ZEND_FE_FETCH_RW:
|
|
/* absolute index to relative offset */
|
|
opline->extended_value = ZEND_OPLINE_NUM_TO_OFFSET(op_array, opline, opline->extended_value);
|
|
break;
|
|
case ZEND_VERIFY_RETURN_TYPE:
|
|
if (op_array->fn_flags & ZEND_ACC_GENERATOR) {
|
|
if (opline->op1_type != IS_UNUSED) {
|
|
(opline + 1)->op1 = opline->op1;
|
|
(opline + 1)->op1_type = opline->op1_type;
|
|
}
|
|
MAKE_NOP(opline);
|
|
}
|
|
break;
|
|
case ZEND_RETURN:
|
|
case ZEND_RETURN_BY_REF:
|
|
if (op_array->fn_flags & ZEND_ACC_GENERATOR) {
|
|
opline->opcode = ZEND_GENERATOR_RETURN;
|
|
}
|
|
break;
|
|
}
|
|
if (opline->op1_type == IS_CONST) {
|
|
ZEND_PASS_TWO_UPDATE_CONSTANT(op_array, opline->op1);
|
|
} else if (opline->op1_type & (IS_VAR|IS_TMP_VAR)) {
|
|
opline->op1.var = (uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + opline->op1.var);
|
|
}
|
|
if (opline->op2_type == IS_CONST) {
|
|
ZEND_PASS_TWO_UPDATE_CONSTANT(op_array, opline->op2);
|
|
} else if (opline->op2_type & (IS_VAR|IS_TMP_VAR)) {
|
|
opline->op2.var = (uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + opline->op2.var);
|
|
}
|
|
if (opline->result_type & (IS_VAR|IS_TMP_VAR)) {
|
|
opline->result.var = (uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + opline->result.var);
|
|
}
|
|
ZEND_VM_SET_OPCODE_HANDLER(opline);
|
|
opline++;
|
|
}
|
|
|
|
if (op_array->live_range) {
|
|
uint32_t i;
|
|
|
|
for (i = 0; i < op_array->last_live_range; i++) {
|
|
op_array->live_range[i].var =
|
|
(uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + (op_array->live_range[i].var / sizeof(zval))) |
|
|
(op_array->live_range[i].var & ZEND_LIVE_MASK);
|
|
}
|
|
}
|
|
|
|
op_array->fn_flags |= ZEND_ACC_DONE_PASS_TWO;
|
|
return 0;
|
|
}
|
|
|
|
ZEND_API unary_op_type get_unary_op(int opcode)
|
|
{
|
|
switch (opcode) {
|
|
case ZEND_BW_NOT:
|
|
return (unary_op_type) bitwise_not_function;
|
|
case ZEND_BOOL_NOT:
|
|
return (unary_op_type) boolean_not_function;
|
|
default:
|
|
return (unary_op_type) NULL;
|
|
}
|
|
}
|
|
|
|
ZEND_API binary_op_type get_binary_op(int opcode)
|
|
{
|
|
switch (opcode) {
|
|
case ZEND_ADD:
|
|
case ZEND_ASSIGN_ADD:
|
|
return (binary_op_type) add_function;
|
|
case ZEND_SUB:
|
|
case ZEND_ASSIGN_SUB:
|
|
return (binary_op_type) sub_function;
|
|
case ZEND_MUL:
|
|
case ZEND_ASSIGN_MUL:
|
|
return (binary_op_type) mul_function;
|
|
case ZEND_POW:
|
|
return (binary_op_type) pow_function;
|
|
case ZEND_DIV:
|
|
case ZEND_ASSIGN_DIV:
|
|
return (binary_op_type) div_function;
|
|
case ZEND_MOD:
|
|
case ZEND_ASSIGN_MOD:
|
|
return (binary_op_type) mod_function;
|
|
case ZEND_SL:
|
|
case ZEND_ASSIGN_SL:
|
|
return (binary_op_type) shift_left_function;
|
|
case ZEND_SR:
|
|
case ZEND_ASSIGN_SR:
|
|
return (binary_op_type) shift_right_function;
|
|
case ZEND_FAST_CONCAT:
|
|
case ZEND_CONCAT:
|
|
case ZEND_ASSIGN_CONCAT:
|
|
return (binary_op_type) concat_function;
|
|
case ZEND_IS_IDENTICAL:
|
|
return (binary_op_type) is_identical_function;
|
|
case ZEND_IS_NOT_IDENTICAL:
|
|
return (binary_op_type) is_not_identical_function;
|
|
case ZEND_IS_EQUAL:
|
|
return (binary_op_type) is_equal_function;
|
|
case ZEND_IS_NOT_EQUAL:
|
|
return (binary_op_type) is_not_equal_function;
|
|
case ZEND_IS_SMALLER:
|
|
return (binary_op_type) is_smaller_function;
|
|
case ZEND_IS_SMALLER_OR_EQUAL:
|
|
return (binary_op_type) is_smaller_or_equal_function;
|
|
case ZEND_SPACESHIP:
|
|
return (binary_op_type) compare_function;
|
|
case ZEND_BW_OR:
|
|
case ZEND_ASSIGN_BW_OR:
|
|
return (binary_op_type) bitwise_or_function;
|
|
case ZEND_BW_AND:
|
|
case ZEND_ASSIGN_BW_AND:
|
|
return (binary_op_type) bitwise_and_function;
|
|
case ZEND_BW_XOR:
|
|
case ZEND_ASSIGN_BW_XOR:
|
|
return (binary_op_type) bitwise_xor_function;
|
|
case ZEND_BOOL_XOR:
|
|
return (binary_op_type) boolean_xor_function;
|
|
default:
|
|
return (binary_op_type) NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*/
|