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Merge branch 'PHP-8.1'

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* PHP-8.1:
  JIT: Partially fix handling of exceptions thrown in interrupt handlers
This commit is contained in:
Dmitry Stogov 2021-11-11 21:22:54 +03:00
commit e96f980fcc
4 changed files with 26 additions and 0 deletions
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4
ext/opcache/jit/zend_jit_arm64.dasc
View file

@ -1778,6 +1778,10 @@ static int zend_jit_interrupt_handler_stub(dasm_State **Dst)
| //zend_interrupt_function(execute_data);
| mov CARG1, FP
| EXT_CALL zend_interrupt_function, TMP1
| MEM_LOAD_64_ZTS ldr, REG0, executor_globals, exception, TMP1
| cbz REG0, >1
| EXT_CALL zend_jit_exception_in_interrupt_handler_helper, TMP1
|1:
| //ZEND_VM_ENTER();
| //execute_data = EG(current_execute_data);
| MEM_LOAD_64_ZTS ldr, FP, executor_globals, current_execute_data, TMP1

1
ext/opcache/jit/zend_jit_disasm.c
View file

@ -700,6 +700,7 @@ static int zend_jit_disasm_init(void)
REGISTER_HELPER(zval_jit_update_constant_ex);
#endif
REGISTER_HELPER(zend_jit_free_trampoline_helper);
REGISTER_HELPER(zend_jit_exception_in_interrupt_handler_helper);
#undef REGISTER_HELPER
#ifndef _WIN32

17
ext/opcache/jit/zend_jit_helpers.c
View file

@ -2545,6 +2545,23 @@ static void ZEND_FASTCALL zend_jit_free_trampoline_helper(zend_function *func)
zend_free_trampoline(func);
}
static void ZEND_FASTCALL zend_jit_exception_in_interrupt_handler_helper(void)
{
if (EG(exception)) {
/* We have to UNDEF result, because ZEND_HANDLE_EXCEPTION is going to free it */
const zend_op *throw_op = EG(opline_before_exception);
if (throw_op
&& throw_op->result_type & (IS_TMP_VAR|IS_VAR)
&& throw_op->opcode != ZEND_ADD_ARRAY_ELEMENT
&& throw_op->opcode != ZEND_ADD_ARRAY_UNPACK
&& throw_op->opcode != ZEND_ROPE_INIT
&& throw_op->opcode != ZEND_ROPE_ADD) {
ZVAL_UNDEF(ZEND_CALL_VAR(EG(current_execute_data), throw_op->result.var));
}
}
}
static zend_string* ZEND_FASTCALL zend_jit_rope_end(zend_string **rope, uint32_t count)
{
zend_string *ret;

4
ext/opcache/jit/zend_jit_x86.dasc
View file

@ -1715,6 +1715,10 @@ static int zend_jit_interrupt_handler_stub(dasm_State **Dst)
| mov aword A1, FP
| EXT_CALL zend_interrupt_function, r0
|.endif
| MEM_CMP_ZTS aword, executor_globals, exception, 0, r0
| je >1
| EXT_CALL zend_jit_exception_in_interrupt_handler_helper, r0
|1:
| //ZEND_VM_ENTER();
| //execute_data = EG(current_execute_data);
| MEM_LOAD_ZTS FP, aword, executor_globals, current_execute_data, r0