mirror of
https://github.com/php/php-src.git
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8483a21f29
* Properly initialize PHPDBG_G(watch_tmp) Otherwise that may cause segfaults in ZTS builds. * Deactivate potentially remaining watchpoints after REPL Otherwise the memory could still be protected, resulting in segfaults during shutdown. * NULL zend_handlers_table after freeing As of commit 4130fe4[1], the `zend_handlers_table` is explicitly freed in the `zend_vm_dtor()`. Since phpdbg (and maybe some other SAPIs) may restart the engine afterwards, we have to make sure that the table is also NULLed. * Only set context option if there is a context In other words, we must not follow the null pointer. * Cater to file handles without attached console File handles do not necessarily have an attached console (for instance, pipes do not), in which case `GetConsoleScreenBufferInfo()` fails. In this case we set a default value (`40`) for lines like on other systems. [1] <http://git.php.net/?p=php-src.git;a=commit;h=4130fe437a5db7ead1444d3748bd0fbad9829cb2>
145 lines
3.5 KiB
Plaintext
145 lines
3.5 KiB
Plaintext
{%DEFINES%}
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#if (ZEND_VM_KIND != ZEND_VM_KIND_CALL) && (ZEND_GCC_VERSION >= 4000) && !defined(__clang__)
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# pragma GCC push_options
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# pragma GCC optimize("no-gcse")
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# pragma GCC optimize("no-ivopts")
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#endif
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ZEND_API void {%EXECUTOR_NAME%}_ex(zend_execute_data *ex)
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{
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DCL_OPLINE
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{%HELPER_VARS%}
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{%INTERNAL_LABELS%}
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LOAD_OPLINE();
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ZEND_VM_LOOP_INTERRUPT_CHECK();
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while (1) {
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{%ZEND_VM_CONTINUE_LABEL%}
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{%ZEND_VM_DISPATCH%} {
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{%INTERNAL_EXECUTOR%}
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}
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}
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zend_error_noreturn(E_CORE_ERROR, "Arrived at end of main loop which shouldn't happen");
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}
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#if (ZEND_VM_KIND != ZEND_VM_KIND_CALL) && (ZEND_GCC_VERSION >= 4000) && !defined(__clang__)
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# pragma GCC pop_options
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#endif
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ZEND_API void zend_{%EXECUTOR_NAME%}(zend_op_array *op_array, zval *return_value)
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{
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zend_execute_data *execute_data;
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void *object_or_called_scope;
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uint32_t call_info;
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if (EG(exception) != NULL) {
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return;
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}
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object_or_called_scope = zend_get_this_object(EG(current_execute_data));
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if (EXPECTED(!object_or_called_scope)) {
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object_or_called_scope = zend_get_called_scope(EG(current_execute_data));
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call_info = ZEND_CALL_TOP_CODE | ZEND_CALL_HAS_SYMBOL_TABLE;
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} else {
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call_info = ZEND_CALL_TOP_CODE | ZEND_CALL_HAS_SYMBOL_TABLE | ZEND_CALL_HAS_THIS;
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}
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execute_data = zend_vm_stack_push_call_frame(call_info,
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(zend_function*)op_array, 0, object_or_called_scope);
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if (EG(current_execute_data)) {
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execute_data->symbol_table = zend_rebuild_symbol_table();
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} else {
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execute_data->symbol_table = &EG(symbol_table);
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}
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EX(prev_execute_data) = EG(current_execute_data);
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i_init_code_execute_data(execute_data, op_array, return_value);
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zend_{%EXECUTOR_NAME%}_ex(execute_data);
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zend_vm_stack_free_call_frame(execute_data);
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}
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{%EXTERNAL_EXECUTOR%}
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void {%INITIALIZER_NAME%}(void)
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{
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{%EXTERNAL_LABELS%}
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VM_TRACE_START();
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}
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static HashTable *zend_handlers_table = NULL;
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void zend_vm_dtor(void)
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{
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VM_TRACE_END();
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if (zend_handlers_table) {
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zend_hash_destroy(zend_handlers_table);
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free(zend_handlers_table);
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zend_handlers_table = NULL;
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}
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}
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static void init_opcode_serialiser(void)
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{
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int i;
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zval tmp;
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zend_handlers_table = malloc(sizeof(HashTable));
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zend_hash_init_ex(zend_handlers_table, zend_handlers_count, NULL, NULL, 1, 0);
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zend_hash_real_init(zend_handlers_table, 0);
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Z_TYPE_INFO(tmp) = IS_LONG;
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for (i = 0; i < zend_handlers_count; i++) {
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Z_LVAL(tmp) = i;
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zend_hash_index_add(zend_handlers_table, (zend_long)(zend_uintptr_t)zend_opcode_handlers[i], &tmp);
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}
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}
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ZEND_API void ZEND_FASTCALL zend_serialize_opcode_handler(zend_op *op)
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{
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zval *zv;
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if (!zend_handlers_table) {
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init_opcode_serialiser();
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}
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zv = zend_hash_index_find(zend_handlers_table, (zend_long)(zend_uintptr_t)op->handler);
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ZEND_ASSERT(zv != NULL);
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op->handler = (const void *)(zend_uintptr_t)Z_LVAL_P(zv);
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}
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ZEND_API void ZEND_FASTCALL zend_deserialize_opcode_handler(zend_op *op)
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{
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op->handler = zend_opcode_handlers[(zend_uintptr_t)op->handler];
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}
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ZEND_API const void* ZEND_FASTCALL zend_get_opcode_handler_func(const zend_op *op)
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{
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#if ZEND_VM_KIND == ZEND_VM_KIND_CALL
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return op->handler;
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#elif ZEND_VM_KIND == ZEND_VM_KIND_HYBRID
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zval *zv;
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if (!zend_handlers_table) {
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init_opcode_serialiser();
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}
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zv = zend_hash_index_find(zend_handlers_table, (zend_long)(zend_uintptr_t)op->handler);
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ZEND_ASSERT(zv != NULL);
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return zend_opcode_handler_funcs[Z_LVAL_P(zv)];
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#else
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return NULL;
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#endif
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}
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ZEND_API const zend_op *zend_get_halt_op(void)
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{
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#if ZEND_VM_KIND == ZEND_VM_KIND_HYBRID
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return &hybrid_halt_op;
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#else
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return NULL;
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#endif
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}
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ZEND_API int zend_vm_kind(void)
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{
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return ZEND_VM_KIND;
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}
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