xref: /PHP-8.0/Zend/zend_vm_execute.skl (revision d5d31ea3)
1{%DEFINES%}
2
3#if (ZEND_VM_KIND != ZEND_VM_KIND_CALL) && (ZEND_GCC_VERSION >= 4000) && !defined(__clang__)
4# pragma GCC push_options
5# pragma GCC optimize("no-gcse")
6# pragma GCC optimize("no-ivopts")
7#endif
8ZEND_API void {%EXECUTOR_NAME%}_ex(zend_execute_data *ex)
9{
10	DCL_OPLINE
11
12	{%HELPER_VARS%}
13
14	{%INTERNAL_LABELS%}
15
16	LOAD_OPLINE();
17	ZEND_VM_LOOP_INTERRUPT_CHECK();
18
19	while (1) {
20		{%ZEND_VM_CONTINUE_LABEL%}
21		{%ZEND_VM_DISPATCH%} {
22			{%INTERNAL_EXECUTOR%}
23		}
24
25	}
26	zend_error_noreturn(E_CORE_ERROR, "Arrived at end of main loop which shouldn't happen");
27}
28#if (ZEND_VM_KIND != ZEND_VM_KIND_CALL) && (ZEND_GCC_VERSION >= 4000) && !defined(__clang__)
29# pragma GCC pop_options
30#endif
31
32ZEND_API void zend_{%EXECUTOR_NAME%}(zend_op_array *op_array, zval *return_value)
33{
34	zend_execute_data *execute_data;
35	void *object_or_called_scope;
36	uint32_t call_info;
37
38	if (EG(exception) != NULL) {
39		return;
40	}
41
42	object_or_called_scope = zend_get_this_object(EG(current_execute_data));
43	if (EXPECTED(!object_or_called_scope)) {
44		object_or_called_scope = zend_get_called_scope(EG(current_execute_data));
45		call_info = ZEND_CALL_TOP_CODE | ZEND_CALL_HAS_SYMBOL_TABLE;
46	} else {
47		call_info = ZEND_CALL_TOP_CODE | ZEND_CALL_HAS_SYMBOL_TABLE | ZEND_CALL_HAS_THIS;
48	}
49	execute_data = zend_vm_stack_push_call_frame(call_info,
50		(zend_function*)op_array, 0, object_or_called_scope);
51	if (EG(current_execute_data)) {
52		execute_data->symbol_table = zend_rebuild_symbol_table();
53	} else {
54		execute_data->symbol_table = &EG(symbol_table);
55	}
56	EX(prev_execute_data) = EG(current_execute_data);
57	i_init_code_execute_data(execute_data, op_array, return_value);
58	ZEND_OBSERVER_FCALL_BEGIN(execute_data);
59	zend_{%EXECUTOR_NAME%}_ex(execute_data);
60	/* Observer end handlers are called from ZEND_RETURN */
61	zend_vm_stack_free_call_frame(execute_data);
62}
63
64{%EXTERNAL_EXECUTOR%}
65
66void {%INITIALIZER_NAME%}(void)
67{
68	{%EXTERNAL_LABELS%}
69	VM_TRACE_START();
70}
71
72static HashTable *zend_handlers_table = NULL;
73
74void zend_vm_dtor(void)
75{
76	VM_TRACE_END();
77	if (zend_handlers_table) {
78		zend_hash_destroy(zend_handlers_table);
79		free(zend_handlers_table);
80		zend_handlers_table = NULL;
81	}
82}
83
84static void init_opcode_serialiser(void)
85{
86	int i;
87	zval tmp;
88
89	zend_handlers_table = malloc(sizeof(HashTable));
90	zend_hash_init(zend_handlers_table, zend_handlers_count, NULL, NULL, 1);
91	zend_hash_real_init(zend_handlers_table, 0);
92	Z_TYPE_INFO(tmp) = IS_LONG;
93	for (i = 0; i < zend_handlers_count; i++) {
94		Z_LVAL(tmp) = i;
95		zend_hash_index_add(zend_handlers_table, (zend_long)(zend_uintptr_t)zend_opcode_handlers[i], &tmp);
96	}
97}
98
99ZEND_API void ZEND_FASTCALL zend_serialize_opcode_handler(zend_op *op)
100{
101	zval *zv;
102
103	if (!zend_handlers_table) {
104		init_opcode_serialiser();
105	}
106	zv = zend_hash_index_find(zend_handlers_table, (zend_long)(zend_uintptr_t)op->handler);
107	ZEND_ASSERT(zv != NULL);
108	op->handler = (const void *)(zend_uintptr_t)Z_LVAL_P(zv);
109}
110
111ZEND_API void ZEND_FASTCALL zend_deserialize_opcode_handler(zend_op *op)
112{
113	op->handler = zend_opcode_handlers[(zend_uintptr_t)op->handler];
114}
115
116ZEND_API const void* ZEND_FASTCALL zend_get_opcode_handler_func(const zend_op *op)
117{
118#if ZEND_VM_KIND == ZEND_VM_KIND_CALL
119	return op->handler;
120#elif ZEND_VM_KIND == ZEND_VM_KIND_HYBRID
121	zval *zv;
122
123	if (!zend_handlers_table) {
124		init_opcode_serialiser();
125	}
126	zv = zend_hash_index_find(zend_handlers_table, (zend_long)(zend_uintptr_t)op->handler);
127	ZEND_ASSERT(zv != NULL);
128	return zend_opcode_handler_funcs[Z_LVAL_P(zv)];
129#else
130	return NULL;
131#endif
132}
133
134ZEND_API const zend_op *zend_get_halt_op(void)
135{
136#if ZEND_VM_KIND == ZEND_VM_KIND_HYBRID
137	return &hybrid_halt_op;
138#else
139	return NULL;
140#endif
141}
142
143ZEND_API int zend_vm_kind(void)
144{
145	return ZEND_VM_KIND;
146}
147