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php-src/Zend/zend_vm_gen.php
Dmitry Stogov c19cb70dac Revert "Refactor zval cleanup into single function" 
This reverts commit bac6fdb0c5.
2016-05-06 10:47:58 +03:00

2503 lines
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<?php
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2016 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: Dmitry Stogov <dmitry@zend.com> |
+----------------------------------------------------------------------+
$Id$
*/
$header_text = <<< DATA
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2016 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> |
+----------------------------------------------------------------------+
*/
DATA;
/*
This script creates zend_vm_execute.h and zend_vm_opcodes.h
from existing zend_vm_def.h and zend_vm_execute.skl
*/
error_reporting(E_ALL);
define("ZEND_VM_KIND_CALL", 1);
define("ZEND_VM_KIND_SWITCH", 2);
define("ZEND_VM_KIND_GOTO", 3);
$vm_op_flags = array(
"ZEND_VM_OP_SPEC" => 1<<0,
"ZEND_VM_OP_CONST" => 1<<1,
"ZEND_VM_OP_TMPVAR" => 1<<2,
"ZEND_VM_OP_TMPVARCV" => 1<<3,
"ZEND_VM_OP_MASK" => 0xf0,
"ZEND_VM_OP_NUM" => 0x10,
"ZEND_VM_OP_JMP_ADDR" => 0x20,
"ZEND_VM_OP_TRY_CATCH" => 0x30,
"ZEND_VM_OP_LIVE_RANGE" => 0x40,
"ZEND_VM_OP_THIS" => 0x50,
"ZEND_VM_OP_NEXT" => 0x60,
"ZEND_VM_OP_CLASS_FETCH" => 0x70,
"ZEND_VM_OP_CONSTRUCTOR" => 0x80,
"ZEND_VM_EXT_VAR_FETCH" => 1<<16,
"ZEND_VM_EXT_ISSET" => 1<<17,
"ZEND_VM_EXT_ARG_NUM" => 1<<18,
"ZEND_VM_EXT_ARRAY_INIT" => 1<<19,
"ZEND_VM_EXT_REF" => 1<<20,
"ZEND_VM_EXT_MASK" => 0x0f000000,
"ZEND_VM_EXT_NUM" => 0x01000000,
// unused 0x2000000
"ZEND_VM_EXT_JMP_ADDR" => 0x03000000,
"ZEND_VM_EXT_DIM_OBJ" => 0x04000000,
"ZEND_VM_EXT_CLASS_FETCH" => 0x05000000,
"ZEND_VM_EXT_CONST_FETCH" => 0x06000000,
"ZEND_VM_EXT_TYPE" => 0x07000000,
"ZEND_VM_EXT_EVAL" => 0x08000000,
"ZEND_VM_EXT_FAST_CALL" => 0x09000000,
"ZEND_VM_EXT_FAST_RET" => 0x0a000000,
"ZEND_VM_EXT_SRC" => 0x0b000000,
"ZEND_VM_EXT_SEND" => 0x0c000000,
"ZEND_VM_NO_CONST_CONST" => 0x40000000,
"ZEND_VM_COMMUTATIVE" => 0x80000000,
);
foreach ($vm_op_flags as $name => $val) {
define($name, $val);
}
$vm_op_decode = array(
"ANY" => 0,
"CONST" => ZEND_VM_OP_SPEC | ZEND_VM_OP_CONST,
"TMP" => ZEND_VM_OP_SPEC,
"VAR" => ZEND_VM_OP_SPEC,
"UNUSED" => ZEND_VM_OP_SPEC,
"CV" => ZEND_VM_OP_SPEC,
"TMPVAR" => ZEND_VM_OP_SPEC | ZEND_VM_OP_TMPVAR,
"TMPVARCV" => ZEND_VM_OP_SPEC | ZEND_VM_OP_TMPVARCV,
"NUM" => ZEND_VM_OP_NUM,
"JMP_ADDR" => ZEND_VM_OP_JMP_ADDR,
"TRY_CATCH" => ZEND_VM_OP_TRY_CATCH,
"LIVE_RANGE" => ZEND_VM_OP_LIVE_RANGE,
"THIS" => ZEND_VM_OP_THIS,
"NEXT" => ZEND_VM_OP_NEXT,
"CLASS_FETCH" => ZEND_VM_OP_CLASS_FETCH,
"CONSTRUCTOR" => ZEND_VM_OP_CONSTRUCTOR,
);
$vm_ext_decode = array(
"NUM" => ZEND_VM_EXT_NUM,
"JMP_ADDR" => ZEND_VM_EXT_JMP_ADDR,
"DIM_OBJ" => ZEND_VM_EXT_DIM_OBJ,
"CLASS_FETCH" => ZEND_VM_EXT_CLASS_FETCH,
"CONST_FETCH" => ZEND_VM_EXT_CONST_FETCH,
"VAR_FETCH" => ZEND_VM_EXT_VAR_FETCH,
"ARRAY_INIT" => ZEND_VM_EXT_ARRAY_INIT,
"TYPE" => ZEND_VM_EXT_TYPE,
"EVAL" => ZEND_VM_EXT_EVAL,
"FAST_CALL" => ZEND_VM_EXT_FAST_CALL,
"FAST_RET" => ZEND_VM_EXT_FAST_RET,
"ISSET" => ZEND_VM_EXT_ISSET,
"ARG_NUM" => ZEND_VM_EXT_ARG_NUM,
"REF" => ZEND_VM_EXT_REF,
"SRC" => ZEND_VM_EXT_SRC,
"SEND" => ZEND_VM_EXT_SEND,
);
$vm_kind_name = array(
ZEND_VM_KIND_CALL => "ZEND_VM_KIND_CALL",
ZEND_VM_KIND_SWITCH => "ZEND_VM_KIND_SWITCH",
ZEND_VM_KIND_GOTO => "ZEND_VM_KIND_GOTO",
);
$op_types = array(
"ANY",
"CONST",
"TMP",
"VAR",
"UNUSED",
"CV"
);
$op_types_ex = array(
"ANY",
"CONST",
"TMP",
"VAR",
"UNUSED",
"CV",
"TMPVAR",
"TMPVARCV",
);
$prefix = array(
"ANY" => "",
"TMP" => "_TMP",
"VAR" => "_VAR",
"CONST" => "_CONST",
"UNUSED" => "_UNUSED",
"CV" => "_CV",
"TMPVAR" => "_TMPVAR",
"TMPVARCV" => "_TMPVARCV",
);
$typecode = array(
"ANY" => 0,
"TMP" => 1,
"VAR" => 2,
"CONST" => 0,
"UNUSED" => 3,
"CV" => 4,
"TMPVAR" => 0,
"TMPVARCV" => 0,
);
$commutative_order = array(
"ANY" => 0,
"TMP" => 1,
"VAR" => 2,
"CONST" => 0,
"UNUSED" => 0,
"CV" => 4,
"TMPVAR" => 2,
"TMPVARCV" => 4,
);
$op1_type = array(
"ANY" => "opline->op1_type",
"TMP" => "IS_TMP_VAR",
"VAR" => "IS_VAR",
"CONST" => "IS_CONST",
"UNUSED" => "IS_UNUSED",
"CV" => "IS_CV",
"TMPVAR" => "(IS_TMP_VAR|IS_VAR)",
"TMPVARCV" => "(IS_TMP_VAR|IS_VAR|IS_CV)",
);
$op2_type = array(
"ANY" => "opline->op2_type",
"TMP" => "IS_TMP_VAR",
"VAR" => "IS_VAR",
"CONST" => "IS_CONST",
"UNUSED" => "IS_UNUSED",
"CV" => "IS_CV",
"TMPVAR" => "(IS_TMP_VAR|IS_VAR)",
"TMPVARCV" => "(IS_TMP_VAR|IS_VAR|IS_CV)",
);
$op1_free = array(
"ANY" => "(free_op1 != NULL)",
"TMP" => "1",
"VAR" => "(free_op1 != NULL)",
"CONST" => "0",
"UNUSED" => "0",
"CV" => "0",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_free = array(
"ANY" => "(free_op2 != NULL)",
"TMP" => "1",
"VAR" => "(free_op2 != NULL)",
"CONST" => "0",
"UNUSED" => "0",
"CV" => "0",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_get_zval_ptr = array(
"ANY" => "get_zval_ptr(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op1.var, execute_data, &free_op1)",
"VAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "EX_CONSTANT(opline->op1)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"TMPVARCV" => "???",
);
$op2_get_zval_ptr = array(
"ANY" => "get_zval_ptr(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op2.var, execute_data, &free_op2)",
"VAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "EX_CONSTANT(opline->op2)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"TMPVARCV" => "???",
);
$op1_get_zval_ptr_ptr = array(
"ANY" => "get_zval_ptr_ptr(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "NULL",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_get_zval_ptr_ptr = array(
"ANY" => "get_zval_ptr_ptr(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "NULL",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_get_zval_ptr_deref = array(
"ANY" => "get_zval_ptr_deref(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op1.var, execute_data, &free_op1)",
"VAR" => "_get_zval_ptr_var_deref(opline->op1.var, execute_data, &free_op1)",
"CONST" => "EX_CONSTANT(opline->op1)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_deref_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_get_zval_ptr_deref = array(
"ANY" => "get_zval_ptr_deref(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op2.var, execute_data, &free_op2)",
"VAR" => "_get_zval_ptr_var_deref(opline->op2.var, execute_data, &free_op2)",
"CONST" => "EX_CONSTANT(opline->op2)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_deref_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_get_zval_ptr_undef = array(
"ANY" => "get_zval_ptr_undef(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op1.var, execute_data, &free_op1)",
"VAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "EX_CONSTANT(opline->op1)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_undef(execute_data, opline->op1.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"TMPVARCV" => "EX_VAR(opline->op1.var)",
);
$op2_get_zval_ptr_undef = array(
"ANY" => "get_zval_ptr_undef(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op2.var, execute_data, &free_op2)",
"VAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "EX_CONSTANT(opline->op2)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_undef(execute_data, opline->op2.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"TMPVARCV" => "EX_VAR(opline->op2.var)",
);
$op1_get_zval_ptr_ptr_undef = array(
"ANY" => "get_zval_ptr_ptr_undef(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "NULL",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_undef_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "EX_VAR(opline->op1.var)",
);
$op2_get_zval_ptr_ptr_undef = array(
"ANY" => "get_zval_ptr_ptr_undef(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "NULL",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_undef_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "???",
"TMPVARCV" => "EX_VAR(opline->op2.var)",
);
$op1_get_obj_zval_ptr = array(
"ANY" => "get_obj_zval_ptr(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op1.var, execute_data, &free_op1)",
"VAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "EX_CONSTANT(opline->op1)",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"TMPVARCV" => "???",
);
$op2_get_obj_zval_ptr = array(
"ANY" => "get_obj_zval_ptr(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op2.var, execute_data, &free_op2)",
"VAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "EX_CONSTANT(opline->op2)",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"TMPVARCV" => "???",
);
$op1_get_obj_zval_ptr_undef = array(
"ANY" => "get_obj_zval_ptr_undef(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op1.var, execute_data, &free_op1)",
"VAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "EX_CONSTANT(opline->op1)",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_undef(execute_data, opline->op1.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op1.var, execute_data, &free_op1)",
"TMPVARCV" => "EX_VAR(opline->op1.var)",
);
$op2_get_obj_zval_ptr_undef = array(
"ANY" => "get_obj_zval_ptr_undef(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op2.var, execute_data, &free_op2)",
"VAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "EX_CONSTANT(opline->op2)",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_undef(execute_data, opline->op2.var)",
"TMPVAR" => "_get_zval_ptr_var(opline->op2.var, execute_data, &free_op2)",
"TMPVARCV" => "EX_VAR(opline->op2.var)",
);
$op1_get_obj_zval_ptr_deref = array(
"ANY" => "get_obj_zval_ptr(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op1.var, execute_data, &free_op1)",
"VAR" => "_get_zval_ptr_var_deref(opline->op1.var, execute_data, &free_op1)",
"CONST" => "EX_CONSTANT(opline->op1)",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_deref_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_get_obj_zval_ptr_deref = array(
"ANY" => "get_obj_zval_ptr(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "_get_zval_ptr_tmp(opline->op2.var, execute_data, &free_op2)",
"VAR" => "_get_zval_ptr_var_deref(opline->op2.var, execute_data, &free_op2)",
"CONST" => "EX_CONSTANT(opline->op2)",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_deref_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_get_obj_zval_ptr_ptr = array(
"ANY" => "get_obj_zval_ptr_ptr(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "NULL",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_get_obj_zval_ptr_ptr = array(
"ANY" => "get_obj_zval_ptr_ptr(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "NULL",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_get_obj_zval_ptr_ptr_undef = array(
"ANY" => "get_obj_zval_ptr_ptr(opline->op1_type, opline->op1, execute_data, &free_op1, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op1.var, execute_data, &free_op1)",
"CONST" => "NULL",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_undef_\\1(execute_data, opline->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "EX_VAR(opline->op1.var)",
);
$op2_get_obj_zval_ptr_ptr_undef = array(
"ANY" => "get_obj_zval_ptr_ptr(opline->op2_type, opline->op2, execute_data, &free_op2, \\1)",
"TMP" => "NULL",
"VAR" => "_get_zval_ptr_ptr_var(opline->op2.var, execute_data, &free_op2)",
"CONST" => "NULL",
"UNUSED" => "_get_obj_zval_ptr_unused(execute_data)",
"CV" => "_get_zval_ptr_cv_undef_\\1(execute_data, opline->op2.var)",
"TMPVAR" => "???",
"TMPVARCV" => "EX_VAR(opline->op2.var)",
);
$op1_free_op = array(
"ANY" => "FREE_OP(free_op1)",
"TMP" => "zval_ptr_dtor_nogc(free_op1)",
"VAR" => "zval_ptr_dtor_nogc(free_op1)",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "zval_ptr_dtor_nogc(free_op1)",
"TMPVARCV" => "???",
);
$op2_free_op = array(
"ANY" => "FREE_OP(free_op2)",
"TMP" => "zval_ptr_dtor_nogc(free_op2)",
"VAR" => "zval_ptr_dtor_nogc(free_op2)",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "zval_ptr_dtor_nogc(free_op2)",
"TMPVARCV" => "???",
);
$op1_free_op_if_var = array(
"ANY" => "if (opline->op1_type == IS_VAR) {zval_ptr_dtor_nogc(free_op1);}",
"TMP" => "",
"VAR" => "zval_ptr_dtor_nogc(free_op1)",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_free_op_if_var = array(
"ANY" => "if (opline->op2_type == IS_VAR) {zval_ptr_dtor_nogc(free_op2);}",
"TMP" => "",
"VAR" => "zval_ptr_dtor_nogc(free_op2)",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_free_op_var_ptr = array(
"ANY" => "if (free_op1) {zval_ptr_dtor_nogc(free_op1);}",
"TMP" => "",
"VAR" => "if (UNEXPECTED(free_op1)) {zval_ptr_dtor_nogc(free_op1);}",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op2_free_op_var_ptr = array(
"ANY" => "if (free_op2) {zval_ptr_dtor_nogc(free_op2);}",
"TMP" => "",
"VAR" => "if (UNEXPECTED(free_op2)) {zval_ptr_dtor_nogc(free_op2);}",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op1_free_unfetched = array(
"ANY" => "FREE_UNFETCHED_OP(opline->op1_type, opline->op1.var)",
"TMP" => "zval_ptr_dtor_nogc(EX_VAR(opline->op1.var))",
"VAR" => "zval_ptr_dtor_nogc(EX_VAR(opline->op1.var))",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "zval_ptr_dtor_nogc(EX_VAR(opline->op1.var))",
"TMPVARCV" => "???",
);
$op2_free_unfetched = array(
"ANY" => "FREE_UNFETCHED_OP(opline->op2_type, opline->op2.var)",
"TMP" => "zval_ptr_dtor_nogc(EX_VAR(opline->op2.var))",
"VAR" => "zval_ptr_dtor_nogc(EX_VAR(opline->op2.var))",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "zval_ptr_dtor_nogc(EX_VAR(opline->op2.var))",
"TMPVARCV" => "???",
);
$op_data_type = array(
"ANY" => "(opline+1)->op1_type",
"TMP" => "IS_TMP_VAR",
"VAR" => "IS_VAR",
"CONST" => "IS_CONST",
"UNUSED" => "IS_UNUSED",
"CV" => "IS_CV",
"TMPVAR" => "(IS_TMP_VAR|IS_VAR)",
"TMPVARCV" => "(IS_TMP_VAR|IS_VAR|IS_CV)",
);
$op_data_get_zval_ptr = array(
"ANY" => "get_zval_ptr((opline+1)->op1_type, (opline+1)->op1, execute_data, &free_op_data, \\1)",
"TMP" => "_get_zval_ptr_tmp((opline+1)->op1.var, execute_data, &free_op_data)",
"VAR" => "_get_zval_ptr_var((opline+1)->op1.var, execute_data, &free_op_data)",
"CONST" => "EX_CONSTANT((opline+1)->op1)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_\\1(execute_data, (opline+1)->op1.var)",
"TMPVAR" => "_get_zval_ptr_var((opline+1)->op1.var, execute_data, &free_op_data)",
"TMPVARCV" => "???",
);
$op_data_get_zval_ptr_deref = array(
"ANY" => "get_zval_ptr((opline+1)->op1_type, (opline+1)->op1, execute_data, &free_op_data, \\1)",
"TMP" => "_get_zval_ptr_tmp((opline+1)->op1.var, execute_data, &free_op_data)",
"VAR" => "_get_zval_ptr_var_deref((opline+1)->op1.var, execute_data, &free_op_data)",
"CONST" => "EX_CONSTANT((opline+1)->op1)",
"UNUSED" => "NULL",
"CV" => "_get_zval_ptr_cv_deref_\\1(execute_data, (opline+1)->op1.var)",
"TMPVAR" => "???",
"TMPVARCV" => "???",
);
$op_data_free_op = array(
"ANY" => "FREE_OP(free_op_data)",
"TMP" => "zval_ptr_dtor_nogc(free_op_data)",
"VAR" => "zval_ptr_dtor_nogc(free_op_data)",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "zval_ptr_dtor_nogc(free_op_data)",
"TMPVARCV" => "???",
);
$op_data_free_unfetched = array(
"ANY" => "FREE_UNFETCHED_OP((opline+1)->op1_type, (opline+1)->op1.var)",
"TMP" => "zval_ptr_dtor_nogc(EX_VAR((opline+1)->op1.var))",
"VAR" => "zval_ptr_dtor_nogc(EX_VAR((opline+1)->op1.var))",
"CONST" => "",
"UNUSED" => "",
"CV" => "",
"TMPVAR" => "zval_ptr_dtor_nogc(EX_VAR((opline+1)->op1.var))",
"TMPVARCV" => "???",
);
$list = array(); // list of opcode handlers and helpers in original order
$opcodes = array(); // opcode handlers by code
$helpers = array(); // opcode helpers by name
$params = array(); // parameters of helpers
$opnames = array(); // opcode name to code mapping
$line_no = 1;
$used_extra_spec = array();
// Writes $s into resulting executor
function out($f, $s) {
global $line_no;
fputs($f,$s);
$line_no += substr_count($s, "\n");
}
// Resets #line directives in resulting executor
function out_line($f) {
global $line_no, $executor_file;
fputs($f,"#line ".($line_no+1)." \"".$executor_file."\"\n");
++$line_no;
}
// Returns name of specialized helper
function helper_name($name, $spec, $op1, $op2) {
global $prefix, $helpers;
if (isset($helpers[$name])) {
// If we haven't helper with specified spicialized operands then
// using unspecialized helper
if (!isset($helpers[$name]["op1"][$op1]) &&
isset($helpers[$name]["op1"]["ANY"])) {
$op1 = "ANY";
}
if (!isset($helpers[$name]["op2"][$op2]) &&
isset($helpers[$name]["op2"]["ANY"])) {
$op2 = "ANY";
}
}
return $name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2];
}
function opcode_name($name, $spec, $op1, $op2) {
global $prefix, $opnames, $opcodes;
if (isset($opnames[$name])) {
$opcode = $opcodes[$opnames[$name]];
// If we haven't helper with specified spicialized operands then
// using unspecialized helper
if (!isset($opcode["op1"][$op1]) &&
isset($opcode["op1"]["ANY"])) {
$op1 = "ANY";
}
if (!isset($opcode["op2"][$op2]) &&
isset($opcode["op2"]["ANY"])) {
$op2 = "ANY";
}
}
return $name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2];
}
// Generates code for opcode handler or helper
function gen_code($f, $spec, $kind, $export, $code, $op1, $op2, $name, $extra_spec=null) {
global $op1_type, $op2_type, $op1_get_zval_ptr, $op2_get_zval_ptr,
$op1_get_zval_ptr_deref, $op2_get_zval_ptr_deref,
$op1_get_zval_ptr_undef, $op2_get_zval_ptr_undef,
$op1_get_zval_ptr_ptr, $op2_get_zval_ptr_ptr,
$op1_get_zval_ptr_ptr_undef, $op2_get_zval_ptr_ptr_undef,
$op1_get_obj_zval_ptr, $op2_get_obj_zval_ptr,
$op1_get_obj_zval_ptr_undef, $op2_get_obj_zval_ptr_undef,
$op1_get_obj_zval_ptr_deref, $op2_get_obj_zval_ptr_deref,
$op1_get_obj_zval_ptr_ptr, $op2_get_obj_zval_ptr_ptr,
$op1_get_obj_zval_ptr_ptr_undef, $op2_get_obj_zval_ptr_ptr_undef,
$op1_free, $op2_free, $op1_free_unfetched, $op2_free_unfetched,
$op1_free_op, $op2_free_op, $op1_free_op_if_var, $op2_free_op_if_var,
$op1_free_op_var_ptr, $op2_free_op_var_ptr, $prefix,
$op_data_type, $op_data_get_zval_ptr, $op_data_get_zval_ptr_deref,
$op_data_free_op, $op_data_free_unfetched;
// Specializing
$code = preg_replace(
array(
"/OP1_TYPE/",
"/OP2_TYPE/",
"/OP1_FREE/",
"/OP2_FREE/",
"/GET_OP1_ZVAL_PTR\(([^)]*)\)/",
"/GET_OP2_ZVAL_PTR\(([^)]*)\)/",
"/GET_OP1_ZVAL_PTR_DEREF\(([^)]*)\)/",
"/GET_OP2_ZVAL_PTR_DEREF\(([^)]*)\)/",
"/GET_OP1_ZVAL_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP2_ZVAL_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP1_ZVAL_PTR_PTR\(([^)]*)\)/",
"/GET_OP2_ZVAL_PTR_PTR\(([^)]*)\)/",
"/GET_OP1_ZVAL_PTR_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP2_ZVAL_PTR_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP1_OBJ_ZVAL_PTR\(([^)]*)\)/",
"/GET_OP2_OBJ_ZVAL_PTR\(([^)]*)\)/",
"/GET_OP1_OBJ_ZVAL_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP2_OBJ_ZVAL_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP1_OBJ_ZVAL_PTR_DEREF\(([^)]*)\)/",
"/GET_OP2_OBJ_ZVAL_PTR_DEREF\(([^)]*)\)/",
"/GET_OP1_OBJ_ZVAL_PTR_PTR\(([^)]*)\)/",
"/GET_OP2_OBJ_ZVAL_PTR_PTR\(([^)]*)\)/",
"/GET_OP1_OBJ_ZVAL_PTR_PTR_UNDEF\(([^)]*)\)/",
"/GET_OP2_OBJ_ZVAL_PTR_PTR_UNDEF\(([^)]*)\)/",
"/FREE_OP1\(\)/",
"/FREE_OP2\(\)/",
"/FREE_OP1_IF_VAR\(\)/",
"/FREE_OP2_IF_VAR\(\)/",
"/FREE_OP1_VAR_PTR\(\)/",
"/FREE_OP2_VAR_PTR\(\)/",
"/FREE_UNFETCHED_OP1\(\)/",
"/FREE_UNFETCHED_OP2\(\)/",
"/^#(\s*)ifdef\s+ZEND_VM_SPEC\s*\n/m",
"/^#(\s*)ifndef\s+ZEND_VM_SPEC\s*\n/m",
"/\!defined\(ZEND_VM_SPEC\)/m",
"/defined\(ZEND_VM_SPEC\)/m",
"/ZEND_VM_C_LABEL\(\s*([A-Za-z_]*)\s*\)/m",
"/ZEND_VM_C_GOTO\(\s*([A-Za-z_]*)\s*\)/m",
"/^#(\s*)if\s+1\s*\\|\\|.*[^\\\\]$/m",
"/^#(\s*)if\s+0\s*&&.*[^\\\\]$/m",
"/^#(\s*)ifdef\s+ZEND_VM_EXPORT\s*\n/m",
"/^#(\s*)ifndef\s+ZEND_VM_EXPORT\s*\n/m",
"/OP_DATA_TYPE/",
"/GET_OP_DATA_ZVAL_PTR\(([^)]*)\)/",
"/GET_OP_DATA_ZVAL_PTR_DEREF\(([^)]*)\)/",
"/FREE_OP_DATA\(\)/",
"/FREE_UNFETCHED_OP_DATA\(\)/",
"/RETURN_VALUE_USED\(opline\)/",
"/arg_num <= MAX_ARG_FLAG_NUM/",
"/ZEND_VM_SMART_BRANCH\(\s*([^,)]*)\s*,\s*([^)]*)\s*\)/",
),
array(
$op1_type[$op1],
$op2_type[$op2],
$op1_free[$op1],
$op2_free[$op2],
$op1_get_zval_ptr[$op1],
$op2_get_zval_ptr[$op2],
$op1_get_zval_ptr_deref[$op1],
$op2_get_zval_ptr_deref[$op2],
$op1_get_zval_ptr_undef[$op1],
$op2_get_zval_ptr_undef[$op2],
$op1_get_zval_ptr_ptr[$op1],
$op2_get_zval_ptr_ptr[$op2],
$op1_get_zval_ptr_ptr_undef[$op1],
$op2_get_zval_ptr_ptr_undef[$op2],
$op1_get_obj_zval_ptr[$op1],
$op2_get_obj_zval_ptr[$op2],
$op1_get_obj_zval_ptr_undef[$op1],
$op2_get_obj_zval_ptr_undef[$op2],
$op1_get_obj_zval_ptr_deref[$op1],
$op2_get_obj_zval_ptr_deref[$op2],
$op1_get_obj_zval_ptr_ptr[$op1],
$op2_get_obj_zval_ptr_ptr[$op2],
$op1_get_obj_zval_ptr_ptr_undef[$op1],
$op2_get_obj_zval_ptr_ptr_undef[$op2],
$op1_free_op[$op1],
$op2_free_op[$op2],
$op1_free_op_if_var[$op1],
$op2_free_op_if_var[$op2],
$op1_free_op_var_ptr[$op1],
$op2_free_op_var_ptr[$op2],
$op1_free_unfetched[$op1],
$op2_free_unfetched[$op2],
($op1!="ANY"||$op2!="ANY")?"#\\1if 1\n":"#\\1if 0\n",
($op1!="ANY"||$op2!="ANY")?"#\\1if 0\n":"#\\1if 1\n",
($op1!="ANY"||$op2!="ANY")?"0":"1",
($op1!="ANY"||$op2!="ANY")?"1":"0",
"\\1".(($spec && $kind != ZEND_VM_KIND_CALL)?("_SPEC".$prefix[$op1].$prefix[$op2].extra_spec_name($extra_spec)):""),
"goto \\1".(($spec && $kind != ZEND_VM_KIND_CALL)?("_SPEC".$prefix[$op1].$prefix[$op2].extra_spec_name($extra_spec)):""),
"#\\1if 1",
"#\\1if 0",
$export?"#\\1if 1\n":"#\\1if 0\n",
$export?"#\\1if 0\n":"#\\1if 1\n",
$op_data_type[isset($extra_spec['OP_DATA']) ? $extra_spec['OP_DATA'] : "ANY"],
$op_data_get_zval_ptr[isset($extra_spec['OP_DATA']) ? $extra_spec['OP_DATA'] : "ANY"],
$op_data_get_zval_ptr_deref[isset($extra_spec['OP_DATA']) ? $extra_spec['OP_DATA'] : "ANY"],
$op_data_free_op[isset($extra_spec['OP_DATA']) ? $extra_spec['OP_DATA'] : "ANY"],
$op_data_free_unfetched[isset($extra_spec['OP_DATA']) ? $extra_spec['OP_DATA'] : "ANY"],
isset($extra_spec['RETVAL']) ? $extra_spec['RETVAL'] : "RETURN_VALUE_USED(opline)",
isset($extra_spec['QUICK_ARG']) ? $extra_spec['QUICK_ARG'] : "arg_num <= MAX_ARG_FLAG_NUM",
isset($extra_spec['SMART_BRANCH']) ?
($extra_spec['SMART_BRANCH'] == 1 ?
"ZEND_VM_SMART_BRANCH_JMPZ(\\1, \\2)"
: ($extra_spec['SMART_BRANCH'] == 2 ?
"ZEND_VM_SMART_BRANCH_JMPNZ(\\1, \\2)" : ""))
: "ZEND_VM_SMART_BRANCH(\\1, \\2)",
),
$code);
if (0 && strpos($code, '{') === 0) {
$code = "{\n\tfprintf(stderr, \"$name\\n\");\n" . substr($code, 1);
}
// Updating code according to selected threading model
switch($kind) {
case ZEND_VM_KIND_CALL:
$code = preg_replace_callback(
array(
"/EXECUTE_DATA/m",
"/ZEND_VM_DISPATCH_TO_HANDLER\(\s*([A-Z_]*)\s*\)/m",
"/ZEND_VM_DISPATCH_TO_HELPER\(\s*([A-Za-z_]*)\s*(,[^)]*)?\)/m",
),
function($matches) use ($spec, $prefix, $op1, $op2) {
if (strncasecmp($matches[0], "EXECUTE_DATA", strlen("EXECUTE_DATA")) == 0) {
return "execute_data";
} else if (strncasecmp($matches[0], "ZEND_VM_DISPATCH_TO_HANDLER", strlen("ZEND_VM_DISPATCH_TO_HANDLER")) == 0) {
return "ZEND_VM_TAIL_CALL(" . opcode_name($matches[1], $spec, $op1, $op2) . "_HANDLER(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU))";
} else {
// ZEND_VM_DISPATCH_TO_HELPER
if (isset($matches[2])) {
// extra args
$args = substr(preg_replace("/,\s*[A-Za-z_]*\s*,\s*([^,)\s]*)\s*/", ", $1", $matches[2]), 2);
return "ZEND_VM_TAIL_CALL(" . helper_name($matches[1], $spec, $op1, $op2) . "(" . $args. " ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_CC))";
}
return "ZEND_VM_TAIL_CALL(" . helper_name($matches[1], $spec, $op1, $op2) . "(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU))";
}
},
$code);
break;
case ZEND_VM_KIND_SWITCH:
$code = preg_replace_callback(
array(
"/EXECUTE_DATA/m",
"/ZEND_VM_DISPATCH_TO_HANDLER\(\s*([A-Z_]*)\s*\)/m",
"/ZEND_VM_DISPATCH_TO_HELPER\(\s*([A-Za-z_]*)\s*(,[^)]*)?\)/m",
),
function($matches) use ($spec, $prefix, $op1, $op2) {
if (strncasecmp($matches[0], "EXECUTE_DATA", strlen("EXECUTE_DATA")) == 0) {
return "execute_data";
} else if (strncasecmp($matches[0], "ZEND_VM_DISPATCH_TO_HANDLER", strlen("ZEND_VM_DISPATCH_TO_HANDLER")) == 0) {
return "goto " . opcode_name($matches[1], $spec, $op1, $op2) . "_LABEL";
} else {
// ZEND_VM_DISPATCH_TO_HELPER
if (isset($matches[2])) {
// extra args
$args = preg_replace("/,\s*([A-Za-z_]*)\s*,\s*([^,)\s]*)\s*/", "$1 = $2; ", $matches[2]);
return $args . "goto " . helper_name($matches[1], $spec, $op1, $op2);
}
return "goto " . helper_name($matches[1], $spec, $op1, $op2);
}
},
$code);
break;
case ZEND_VM_KIND_GOTO:
$code = preg_replace_callback(
array(
"/EXECUTE_DATA/m",
"/ZEND_VM_DISPATCH_TO_HANDLER\(\s*([A-Z_]*)\s*\)/m",
"/ZEND_VM_DISPATCH_TO_HELPER\(\s*([A-Za-z_]*)\s*(,[^)]*)?\)/m",
),
function($matches) use ($spec, $prefix, $op1, $op2) {
if (strncasecmp($matches[0], "EXECUTE_DATA", strlen("EXECUTE_DATA")) == 0) {
return "execute_data";
} else if (strncasecmp($matches[0], "ZEND_VM_DISPATCH_TO_HANDLER", strlen("ZEND_VM_DISPATCH_TO_HANDLER")) == 0) {
return "goto " . opcode_name($matches[1], $spec, $op1, $op2) . "_HANDLER";
} else {
// ZEND_VM_DISPATCH_TO_HELPER
if (isset($matches[2])) {
// extra args
$args = preg_replace("/,\s*([A-Za-z_]*)\s*,\s*([^,)\s]*)\s*/", "$1 = $2; ", $matches[2]);
return $args . "goto " . helper_name($matches[1], $spec, $op1, $op2);
}
return "goto " . helper_name($matches[1], $spec, $op1, $op2);
}
},
$code);
break;
}
/* Remove unused free_op1 and free_op2 declarations */
if ($spec && preg_match_all('/^\s*zend_free_op\s+[^;]+;\s*$/me', $code, $matches, PREG_SET_ORDER)) {
$n = 0;
foreach ($matches as $match) {
$code = preg_replace('/'.preg_quote($match[0],'/').'/', "\$D$n", $code);
++$n;
}
$del_free_op1 = (strpos($code, "free_op1") === false);
$del_free_op2 = (strpos($code, "free_op2") === false);
$del_free_op_data = (strpos($code, "free_op_data") === false);
$n = 0;
foreach ($matches as $match) {
$dcl = $match[0];
$changed = 0;
if ($del_free_op1 && strpos($dcl, "free_op1") !== false) {
$dcl = preg_replace("/free_op1\s*,\s*/", "", $dcl);
$dcl = preg_replace("/free_op1\s*;/", ";", $dcl);
$changed = 1;
}
if ($del_free_op2 && strpos($dcl, "free_op2") !== false) {
$dcl = preg_replace("/free_op2\s*,\s*/", "", $dcl);
$dcl = preg_replace("/free_op2\s*;/", ";", $dcl);
$changed = 1;
}
if ($del_free_op_data && strpos($dcl, "free_op_data") !== false) {
$dcl = preg_replace("/free_op_data\s*,\s*/", "", $dcl);
$dcl = preg_replace("/free_op_data\s*;/", ";", $dcl);
$changed = 1;
}
if ($changed) {
$dcl = preg_replace("/,\s*;/", ";", $dcl);
$dcl = preg_replace("/zend_free_op\s*;/", "", $dcl);
}
$code = preg_replace("/\\\$D$n/", $dcl, $code);
++$n;
}
}
/* Remove unnecessary ';' */
$code = preg_replace('/^\s*;\s*$/m', '', $code);
/* Remove WS */
$code = preg_replace('/[ \t]+\n/m', "\n", $code);
out($f, $code);
}
// Generates opcode handler
function gen_handler($f, $spec, $kind, $name, $op1, $op2, $use, $code, $lineno, $extra_spec = null, &$switch_labels = array()) {
global $definition_file, $prefix, $typecode, $opnames, $commutative_order;
if ($spec &&
isset($extra_spec["NO_CONST_CONST"]) &&
$op1 == "CONST" && $op2 == "CONST") {
// Skip useless constant handlers
return;
}
if ($spec &&
isset($extra_spec["COMMUTATIVE"]) &&
$commutative_order[$op1] > $commutative_order[$op2]) {
// Skip duplicate commutative handlers
return;
}
if (ZEND_VM_LINES) {
out($f, "#line $lineno \"$definition_file\"\n");
}
// Generate opcode handler's entry point according to selected threading model
$spec_name = $name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2].($spec?extra_spec_name($extra_spec):"");
switch($kind) {
case ZEND_VM_KIND_CALL:
out($f,"static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL {$spec_name}_HANDLER(ZEND_OPCODE_HANDLER_ARGS)\n");
break;
case ZEND_VM_KIND_SWITCH:
if ($spec) {
$cur = $switch_labels ? end($switch_labels) + 1 : 0;
out($f,"case $cur: /* $spec_name */");
$switch_labels[$spec_name] = $cur;
} else {
out($f,"case ".$name.":");
}
if ($use) {
// This handler is used by other handlers. We will add label to call it.
out($f," {$spec_name}_LABEL:\n");
} else {
out($f,"\n");
}
break;
case ZEND_VM_KIND_GOTO:
out($f,"{$spec_name}_HANDLER: ZEND_VM_GUARD($spec_name);\n");
break;
}
// Generate opcode handler's code
gen_code($f, $spec, $kind, 0, $code, $op1, $op2, $name, $extra_spec);
}
// Generates helper
function gen_helper($f, $spec, $kind, $name, $op1, $op2, $param, $code, $lineno, $inline) {
global $definition_file, $prefix;
if (ZEND_VM_LINES) {
out($f, "#line $lineno \"$definition_file\"\n");
}
// Generate helper's entry point according to selected threading model
switch($kind) {
case ZEND_VM_KIND_CALL:
if ($inline) {
$zend_always_inline = " zend_always_inline";
$zend_fastcall = "";
} else {
$zend_always_inline = "";
$zend_fastcall = " ZEND_FASTCALL";
}
if ($param == null) {
// Helper without parameters
out($f, "static$zend_always_inline ZEND_OPCODE_HANDLER_RET$zend_fastcall ".$name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2]."(ZEND_OPCODE_HANDLER_ARGS)\n");
} else {
// Helper with parameter
out($f, "static$zend_always_inline ZEND_OPCODE_HANDLER_RET$zend_fastcall ".$name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2]."(".$param." ZEND_OPCODE_HANDLER_ARGS_DC)\n");
}
break;
case ZEND_VM_KIND_SWITCH:
out($f, $name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2].":\n");
break;
case ZEND_VM_KIND_GOTO:
out($f, $name.($spec?"_SPEC":"").$prefix[$op1].$prefix[$op2].":\n");
break;
}
// Generate helper's code
gen_code($f, $spec, $kind, 0, $code, $op1, $op2, $name);
}
function gen_null_label($f, $kind, $prolog) {
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,$prolog."ZEND_NULL_HANDLER,\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f,$prolog."(void*)(uintptr_t)-1,\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,$prolog."(void*)&&ZEND_NULL_HANDLER,\n");
break;
}
}
// Generates array of opcode handlers (specialized or unspecialized)
function gen_labels($f, $spec, $kind, $prolog, &$specs, $switch_labels = array()) {
global $opcodes, $op_types, $prefix;
$next = 0;
$label = 0;
if ($spec) {
// Emit labels for specialized executor
// For each opcode in opcode number order
foreach($opcodes as $num => $dsc) {
$specs[$num] = "$label";
$spec_op1 = $spec_op2 = $spec_extra = false;
$next = $num + 1;
$diff = array_diff_key(array_flip($op_types), isset($dsc["op1"]) ? $dsc["op1"] : array());
if ((count($diff) == count($op_types) - 1 ? isset($diff["ANY"]) : count($diff) != count($op_types)) || isset($dsc["op1"]["TMPVAR"]) || isset($dsc["op1"]["TMPVARCV"])) {
$spec_op1 = true;
$specs[$num] .= " | SPEC_RULE_OP1";
}
$diff = array_diff_key(array_flip($op_types), isset($dsc["op2"]) ? $dsc["op2"] : array());
if ((count($diff) == count($op_types) - 1 ? isset($diff["ANY"]) : count($diff) != count($op_types)) || isset($dsc["op2"]["TMPVAR"]) || isset($dsc["op2"]["TMPVARCV"])) {
$spec_op2 = true;
$specs[$num] .= " | SPEC_RULE_OP2";
}
$spec_extra = call_user_func_array("array_merge", extra_spec_handler($dsc) ?: array(array()));
$flags = extra_spec_flags($spec_extra);
if ($flags) {
$specs[$num] .= " | ".implode("|", $flags);
}
if ($num >= 256) {
$opcodes[$num]['spec_code'] = $specs[$num];
unset($specs[$num]);
}
$foreach_op1 = function($do) use ($dsc, $op_types) {
return function() use ($do, $dsc, $op_types) {
// For each op1.op_type except ANY
foreach($op_types as $op1) {
if ($op1 != "ANY") {
if (!isset($dsc["op1"][$op1])) {
if ($op1 == "TMP" || $op1 == "VAR") {
if (isset($dsc["op1"]["TMPVAR"])) {
$op1 = "TMPVAR";
} else if (isset($dsc["op1"]["TMPVARCV"])) {
$op1 = "TMPVARCV";
} else {
$op1 = "ANY";
}
} else if ($op1 == "CV" && isset($dsc["op1"]["TMPVARCV"])) {
$op1 = "TMPVARCV";
} else {
// Try to use unspecialized handler
$op1 = "ANY";
}
}
$do($op1, "ANY");
}
}
};
};
$foreach_op2 = function($do) use ($dsc, $op_types) {
return function($op1) use ($do, $dsc, $op_types) {
// For each op2.op_type except ANY
foreach($op_types as $op2) {
if ($op2 != "ANY") {
if (!isset($dsc["op2"][$op2])) {
if ($op2 == "TMP" || $op2 == "VAR") {
if (isset($dsc["op2"]["TMPVAR"])) {
$op2 = "TMPVAR";
} else if (isset($dsc["op2"]["TMPVARCV"])) {
$op2 = "TMPVARCV";
} else {
$op2 = "ANY";
}
} else if ($op2 == "CV" && isset($dsc["op2"]["TMPVARCV"])) {
$op2 = "TMPVARCV";
} else {
// Try to use unspecialized handler
$op2 = "ANY";
}
}
$do($op1, $op2);
}
}
};
};
$foreach_op_data = function($do) use ($dsc, $op_types) {
return function($op1, $op2, $extra_spec = array()) use ($do, $dsc, $op_types) {
// For each op_data.op_type except ANY
foreach($op_types as $op_data) {
if ($op_data != "ANY") {
if (!isset($dsc["spec"]["OP_DATA"][$op_data])) {
if ($op_data == "TMP" || $op_data == "VAR") {
if (isset($dsc["spec"]["OP_DATA"]["TMPVAR"])) {
$op_data = "TMPVAR";
} else if (isset($dsc["spec"]["OP_DATA"]["TMPVARCV"])) {
$op_data = "TMPVARCV";
} else {
// Try to use unspecialized handler
$op_data = "ANY";
}
} else if ($op_data == "CV" && isset($dsc["OP_DATA"]["TMPVARCV"])) {
$op_data = "TMPVARCV";
} else {
// Try to use unspecialized handler
$op_data = "ANY";
}
}
$do($op1, $op2, array("OP_DATA" => $op_data) + $extra_spec);
}
}
};
};
$foreach_extra_spec = function($do, $spec) use ($dsc) {
return function($op1, $op2, $extra_spec = array()) use ($do, $spec, $dsc) {
foreach ($dsc["spec"][$spec] as $val) {
$do($op1, $op2, array($spec => $val) + $extra_spec);
}
};
};
$generate = function ($op1, $op2, $extra_spec = array()) use ($f, $kind, $dsc, $prefix, $prolog, $num, $switch_labels, &$label) {
global $typecode, $commutative_order;
// Check if specialized handler is defined
/* TODO: figure out better way to signal "specialized and not defined" than an extra lookup */
if (isset($dsc["op1"][$op1]) &&
isset($dsc["op2"][$op2]) &&
(!isset($extra_spec["OP_DATA"]) || isset($dsc["spec"]["OP_DATA"][$extra_spec["OP_DATA"]]))) {
if (isset($extra_spec["NO_CONST_CONST"]) &&
$op1 == "CONST" && $op2 == "CONST") {
// Skip useless constant handlers
gen_null_label($f, $kind, $prolog);
$label++;
return;
} else if (isset($extra_spec["COMMUTATIVE"]) &&
$commutative_order[$op1] > $commutative_order[$op2]) {
// Skip duplicate commutative handlers
gen_null_label($f, $kind, $prolog);
$label++;
return;
}
// Emit pointer to specialized handler
$spec_name = $dsc["op"]."_SPEC".$prefix[$op1].$prefix[$op2].extra_spec_name($extra_spec);
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,"$prolog{$spec_name}_HANDLER,\n");
$label++;
break;
case ZEND_VM_KIND_SWITCH:
out($f,$prolog."(void*)(uintptr_t)$switch_labels[$spec_name],\n");
$label++;
break;
case ZEND_VM_KIND_GOTO:
out($f,$prolog."(void*)&&{$spec_name}_HANDLER,\n");
$label++;
break;
}
} else {
// Emit pointer to handler of undefined opcode
gen_null_label($f, $kind, $prolog);
$label++;
}
};
$do = $generate;
if ($spec_extra) {
foreach ($spec_extra as $extra => $devnull) {
if ($extra == "OP_DATA") {
$do = $foreach_op_data($do);
} else {
$do = $foreach_extra_spec($do, $extra);
}
}
}
if ($spec_op2) {
$do = $foreach_op2($do);
}
if ($spec_op1) {
$do = $foreach_op1($do);
}
$do("ANY", "ANY");
}
} else {
// Emit labels for unspecialized executor
// For each opcode in opcode number order
foreach($opcodes as $num => $dsc) {
while ($next != $num) {
// If some opcode numbers are not used then fill hole with pointers
// to handler of undefined opcode
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,$prolog."ZEND_NULL_HANDLER,\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f,$prolog."(void*)(uintptr_t)-1,\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,$prolog."(void*)&&ZEND_NULL_HANDLER,\n");
break;
}
$next++;
}
if ($num >= 256) {
continue;
}
$next = $num+1;
//ugly trick for ZEND_VM_DEFINE_OP
if ($dsc["code"]) {
// Emit pointer to unspecialized handler
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,$prolog.$dsc["op"]."_HANDLER,\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f,$prolog."(void*)(uintptr_t)".((string)$num).",\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,$prolog."(void*)&&".$dsc["op"]."_HANDLER,\n");
break;
}
} else {
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,$prolog."ZEND_NULL_HANDLER,\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f,$prolog."(void*)(uintptr_t)-1,\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,$prolog."(void*)&&ZEND_NULL_HANDLER,\n");
break;
}
}
}
}
// Emit last handler's label (undefined opcode)
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,$prolog."ZEND_NULL_HANDLER\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f,$prolog."(void*)(uintptr_t)-1\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,$prolog."(void*)&&ZEND_NULL_HANDLER\n");
break;
}
$specs[$num + 1] = "$label";
}
// Generates specialized offsets
function gen_specs($f, $spec, $kind, $prolog, $specs) {
$lastdef = array_pop($specs);
$last = 0;
foreach ($specs as $num => $def) {
while (++$last < $num) {
out($f, "$prolog$lastdef,\n");
}
$last = $num;
out($f, "$prolog$def,\n");
}
out($f, "$prolog$lastdef\n");
}
// Generates handler for undefined opcodes (CALL threading model)
function gen_null_handler($f) {
static $done = 0;
// New and all executors with CALL threading model can use the same handler
// for undefined opcodes, do we emit code for it only once
if (!$done) {
$done = 1;
out($f,"static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_NULL_HANDLER(ZEND_OPCODE_HANDLER_ARGS)\n");
out($f,"{\n");
out($f,"\tUSE_OPLINE\n");
out($f,"\n");
out($f,"\tzend_error_noreturn(E_ERROR, \"Invalid opcode %d/%d/%d.\", OPLINE->opcode, OPLINE->op1_type, OPLINE->op2_type);\n");
out($f,"\tZEND_VM_NEXT_OPCODE(); /* Never reached */\n");
out($f,"}\n\n");
}
}
function extra_spec_name($extra_spec) {
global $prefix;
$s = "";
if (isset($extra_spec["OP_DATA"])) {
$s .= "_OP_DATA" . $prefix[$extra_spec["OP_DATA"]];
}
if (isset($extra_spec["RETVAL"])) {
$s .= "_RETVAL_".($extra_spec["RETVAL"] ? "USED" : "UNUSED");
}
if (isset($extra_spec["QUICK_ARG"])) {
if ($extra_spec["QUICK_ARG"]) {
$s .= "_QUICK";
}
}
if (isset($extra_spec["SMART_BRANCH"])) {
if ($extra_spec["SMART_BRANCH"] == 1) {
$s .= "_JMPZ";
} else if ($extra_spec["SMART_BRANCH"] == 2) {
$s .= "_JMPNZ";
}
}
return $s;
}
function extra_spec_flags($extra_spec) {
$s = array();
if (isset($extra_spec["OP_DATA"])) {
$s[] = "SPEC_RULE_OP_DATA";
}
if (isset($extra_spec["RETVAL"])) {
$s[] = "SPEC_RULE_RETVAL";
}
if (isset($extra_spec["QUICK_ARG"])) {
$s[] = "SPEC_RULE_QUICK_ARG";
}
if (isset($extra_spec["SMART_BRANCH"])) {
$s[] = "SPEC_RULE_SMART_BRANCH";
}
return $s;
}
function extra_spec_handler($dsc) {
global $op_types_ex;
if (!isset($dsc["spec"])) {
return array(array());
}
$specs = $dsc["spec"];
if (isset($specs["OP_DATA"])) {
$op_data_specs = $specs["OP_DATA"];
$specs["OP_DATA"] = array();
foreach($op_types_ex as $op_data) {
if (isset($dsc["spec"]["OP_DATA"][$op_data])) {
$specs["OP_DATA"][] = $op_data;
}
}
}
$f = function($specs) use (&$f) {
$spec = key($specs);
$top = array_shift($specs);
if ($specs) {
$next = $f($specs);
} else {
$next = array(array());
}
$ret = array();
foreach ($next as $existing) {
foreach ($top as $mode) {
$ret[] = array($spec => $mode) + $existing;
}
}
return $ret;
};
return $f($specs);
}
// Generates all opcode handlers and helpers (specialized or unspecilaized)
function gen_executor_code($f, $spec, $kind, $prolog, &$switch_labels = array()) {
global $list, $opcodes, $helpers, $op_types_ex;
if ($spec) {
// Produce specialized executor
$op1t = $op_types_ex;
// for each op1.op_type
foreach($op1t as $op1) {
$op2t = $op_types_ex;
// for each op2.op_type
foreach($op2t as $op2) {
// for each handlers in helpers in original order
foreach ($list as $lineno => $dsc) {
if (isset($dsc["handler"])) {
$num = $dsc["handler"];
foreach (extra_spec_handler($opcodes[$num]) as $extra_spec) {
// Check if handler accepts such types of operands (op1 and op2)
if (isset($opcodes[$num]["op1"][$op1]) &&
isset($opcodes[$num]["op2"][$op2])) {
// Generate handler code
gen_handler($f, 1, $kind, $opcodes[$num]["op"], $op1, $op2, isset($opcodes[$num]["use"]), $opcodes[$num]["code"], $lineno, $extra_spec, $switch_labels);
}
}
} else if (isset($dsc["helper"])) {
$num = $dsc["helper"];
// Check if handler accepts such types of operands (op1 and op2)
if (isset($helpers[$num]["op1"][$op1]) &&
isset($helpers[$num]["op2"][$op2])) {
// Generate helper code
gen_helper($f, 1, $kind, $num, $op1, $op2, $helpers[$num]["param"], $helpers[$num]["code"], $lineno, $helpers[$num]["inline"]);
}
} else {
var_dump($dsc);
die("??? $kind:$num\n");
}
}
}
}
} else {
// Produce unspecialized executor
// for each handlers in helpers in original order
foreach ($list as $lineno => $dsc) {
if (isset($dsc["handler"])) {
$num = $dsc["handler"];
// Generate handler code
if ($num < 256) {
gen_handler($f, 0, $kind, $opcodes[$num]["op"], "ANY", "ANY", isset($opcodes[$num]["use"]), $opcodes[$num]["code"], $lineno);
}
} else if (isset($dsc["helper"])) {
$num = $dsc["helper"];
// Generate helper code
gen_helper($f, 0, $kind, $num, "ANY", "ANY", $helpers[$num]["param"], $helpers[$num]["code"], $lineno, $helpers[$num]["inline"]);
} else {
var_dump($dsc);
die("??? $kind:$num\n");
}
}
}
if (ZEND_VM_LINES) {
// Reset #line directives
out_line($f);
}
// Generate handler for undefined opcodes
switch ($kind) {
case ZEND_VM_KIND_CALL:
gen_null_handler($f);
break;
case ZEND_VM_KIND_SWITCH:
out($f,"default:\n");
out($f,"\tzend_error_noreturn(E_ERROR, \"Invalid opcode %d/%d/%d.\", OPLINE->opcode, OPLINE->op1_type, OPLINE->op2_type);\n");
out($f,"\tZEND_VM_NEXT_OPCODE(); /* Never reached */\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,"ZEND_NULL_HANDLER:\n");
out($f,"\tzend_error_noreturn(E_ERROR, \"Invalid opcode %d/%d/%d.\", OPLINE->opcode, OPLINE->op1_type, OPLINE->op2_type);\n");
out($f,"\tZEND_VM_NEXT_OPCODE(); /* Never reached */\n");
break;
}
}
function skip_blanks($f, $prolog, $epilog) {
if (trim($prolog) != "" || trim($epilog) != "") {
out($f, $prolog.$epilog);
}
}
// Generates executor from skeleton file and definition (specialized or unspecialized)
function gen_executor($f, $skl, $spec, $kind, $executor_name, $initializer_name) {
global $params, $skeleton_file, $line_no;
$switch_labels = array();
$lineno = 0;
foreach ($skl as $line) {
// Skeleton file contains special markers in form %NAME% those are
// substituted by custom code
if (preg_match("/(.*)[{][%]([A-Z_]*)[%][}](.*)/", $line, $m)) {
switch ($m[2]) {
case "DEFINES":
out($f,"#define SPEC_START_MASK 0x0000ffff\n");
out($f,"#define SPEC_RULE_OP1 0x00010000\n");
out($f,"#define SPEC_RULE_OP2 0x00020000\n");
out($f,"#define SPEC_RULE_OP_DATA 0x00040000\n");
out($f,"#define SPEC_RULE_RETVAL 0x00080000\n");
out($f,"#define SPEC_RULE_QUICK_ARG 0x00100000\n");
out($f,"#define SPEC_RULE_SMART_BRANCH 0x00200000\n");
out($f,"\n");
out($f,"static const uint32_t *zend_spec_handlers;\n");
out($f,"static const void **zend_opcode_handlers;\n");
out($f,"static int zend_handlers_count;\n");
out($f,"static const void *zend_vm_get_opcode_handler(zend_uchar opcode, const zend_op* op);\n\n");
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,"\n");
out($f,"#ifdef ZEND_VM_FP_GLOBAL_REG\n");
out($f,"#pragma GCC diagnostic ignored \"-Wvolatile-register-var\"\n");
out($f,"register zend_execute_data* volatile execute_data __asm__(ZEND_VM_FP_GLOBAL_REG);\n");
out($f,"#pragma GCC diagnostic warning \"-Wvolatile-register-var\"\n");
out($f,"#endif\n");
out($f,"\n");
out($f,"#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f,"#pragma GCC diagnostic ignored \"-Wvolatile-register-var\"\n");
out($f,"register const zend_op* volatile opline __asm__(ZEND_VM_IP_GLOBAL_REG);\n");
out($f,"#pragma GCC diagnostic warning \"-Wvolatile-register-var\"\n");
out($f,"#endif\n");
out($f,"\n");
out($f,"#ifdef ZEND_VM_FP_GLOBAL_REG\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS void\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS_DC\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_CC\n");
out($f,"#else\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS zend_execute_data *execute_data\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU execute_data\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS_DC , ZEND_OPCODE_HANDLER_ARGS\n");
out($f,"# define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_CC , ZEND_OPCODE_HANDLER_ARGS_PASSTHRU\n");
out($f,"#endif\n");
out($f,"\n");
out($f,"#if defined(ZEND_VM_FP_GLOBAL_REG) && defined(ZEND_VM_IP_GLOBAL_REG)\n");
out($f,"# define ZEND_OPCODE_HANDLER_RET void\n");
out($f,"# define ZEND_VM_TAIL_CALL(call) call; return\n");
out($f,"# ifdef ZEND_VM_TAIL_CALL_DISPATCH\n");
out($f,"# define ZEND_VM_CONTINUE() ((opcode_handler_t)OPLINE->handler)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU); return\n");
out($f,"# else\n");
out($f,"# define ZEND_VM_CONTINUE() return\n");
out($f,"# endif\n");
out($f,"# define ZEND_VM_RETURN() opline = NULL; return\n");
out($f,"#else\n");
out($f,"# define ZEND_OPCODE_HANDLER_RET int\n");
out($f,"# define ZEND_VM_TAIL_CALL(call) return call\n");
out($f,"# define ZEND_VM_CONTINUE() return 0\n");
out($f,"# define ZEND_VM_RETURN() return -1\n");
out($f,"#endif\n");
out($f,"\n");
out($f,"typedef ZEND_OPCODE_HANDLER_RET (ZEND_FASTCALL *opcode_handler_t) (ZEND_OPCODE_HANDLER_ARGS);\n");
out($f,"\n");
out($f,"#undef OPLINE\n");
out($f,"#undef DCL_OPLINE\n");
out($f,"#undef USE_OPLINE\n");
out($f,"#undef LOAD_OPLINE\n");
out($f,"#undef LOAD_OPLINE_EX\n");
out($f,"#undef SAVE_OPLINE\n");
out($f,"#define DCL_OPLINE\n");
out($f,"#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f,"# define OPLINE opline\n");
out($f,"# define USE_OPLINE\n");
out($f,"# define LOAD_OPLINE() opline = EX(opline)\n");
out($f,"# define LOAD_NEXT_OPLINE() opline = EX(opline) + 1\n");
out($f,"# define SAVE_OPLINE() EX(opline) = opline\n");
out($f,"#else\n");
out($f,"# define OPLINE EX(opline)\n");
out($f,"# define USE_OPLINE const zend_op *opline = EX(opline);\n");
out($f,"# define LOAD_OPLINE()\n");
out($f,"# define LOAD_NEXT_OPLINE() ZEND_VM_INC_OPCODE()\n");
out($f,"# define SAVE_OPLINE()\n");
out($f,"#endif\n");
out($f,"#undef HANDLE_EXCEPTION\n");
out($f,"#undef HANDLE_EXCEPTION_LEAVE\n");
out($f,"#define HANDLE_EXCEPTION() LOAD_OPLINE(); ZEND_VM_CONTINUE()\n");
out($f,"#define HANDLE_EXCEPTION_LEAVE() LOAD_OPLINE(); ZEND_VM_LEAVE()\n");
out($f,"#if defined(ZEND_VM_FP_GLOBAL_REG)\n");
out($f,"# define ZEND_VM_ENTER() execute_data = EG(current_execute_data); LOAD_OPLINE(); ZEND_VM_INTERRUPT_CHECK(); ZEND_VM_CONTINUE()\n");
out($f,"# define ZEND_VM_LEAVE() ZEND_VM_CONTINUE()\n");
out($f,"#elif defined(ZEND_VM_IP_GLOBAL_REG)\n");
out($f,"# define ZEND_VM_ENTER() opline = EG(current_execute_data)->opline; return 1\n");
out($f,"# define ZEND_VM_LEAVE() return 2\n");
out($f,"#else\n");
out($f,"# define ZEND_VM_ENTER() return 1\n");
out($f,"# define ZEND_VM_LEAVE() return 2\n");
out($f,"#endif\n");
out($f,"#define ZEND_VM_DISPATCH(opcode, opline) ZEND_VM_TAIL_CALL(((opcode_handler_t)zend_vm_get_opcode_handler(opcode, opline))(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU));\n");
out($f,"\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f,"\n");
out($f,"#undef OPLINE\n");
out($f,"#undef DCL_OPLINE\n");
out($f,"#undef USE_OPLINE\n");
out($f,"#undef LOAD_OPLINE\n");
out($f,"#undef LOAD_NEXT_OPLINE\n");
out($f,"#undef SAVE_OPLINE\n");
out($f,"#define OPLINE opline\n");
out($f,"#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f,"# define DCL_OPLINE register const zend_op *opline __asm__(ZEND_VM_IP_GLOBAL_REG);\n");
out($f,"#else\n");
out($f,"# define DCL_OPLINE const zend_op *opline;\n");
out($f,"#endif\n");
out($f,"#define USE_OPLINE\n");
out($f,"#define LOAD_OPLINE() opline = EX(opline)\n");
out($f,"#define LOAD_NEXT_OPLINE() opline = EX(opline) + 1\n");
out($f,"#define SAVE_OPLINE() EX(opline) = opline\n");
out($f,"#undef HANDLE_EXCEPTION\n");
out($f,"#undef HANDLE_EXCEPTION_LEAVE\n");
out($f,"#define HANDLE_EXCEPTION() LOAD_OPLINE(); ZEND_VM_CONTINUE()\n");
out($f,"#define HANDLE_EXCEPTION_LEAVE() LOAD_OPLINE(); ZEND_VM_LEAVE()\n");
out($f,"#define ZEND_VM_CONTINUE() goto zend_vm_continue\n");
out($f,"#define ZEND_VM_RETURN() return\n");
out($f,"#define ZEND_VM_ENTER() execute_data = EG(current_execute_data); LOAD_OPLINE(); ZEND_VM_INTERRUPT_CHECK(); ZEND_VM_CONTINUE()\n");
out($f,"#define ZEND_VM_LEAVE() ZEND_VM_CONTINUE()\n");
out($f,"#define ZEND_VM_DISPATCH(opcode, opline) dispatch_handler = zend_vm_get_opcode_handler(opcode, opline); goto zend_vm_dispatch;\n");
out($f,"\n");
break;
case ZEND_VM_KIND_GOTO:
out($f,"\n");
out($f,"#undef OPLINE\n");
out($f,"#undef DCL_OPLINE\n");
out($f,"#undef USE_OPLINE\n");
out($f,"#undef LOAD_OPLINE\n");
out($f,"#undef LOAD_NEXT_OPLINE\n");
out($f,"#undef SAVE_OPLINE\n");
out($f,"#define OPLINE opline\n");
out($f,"#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f,"# define DCL_OPLINE register const zend_op *opline __asm__(ZEND_VM_IP_GLOBAL_REG);\n");
out($f,"#else\n");
out($f,"# define DCL_OPLINE const zend_op *opline;\n");
out($f,"#endif\n");
out($f,"#define USE_OPLINE\n");
out($f,"#define LOAD_OPLINE() opline = EX(opline)\n");
out($f,"#define LOAD_NEXT_OPLINE() opline = EX(opline) + 1\n");
out($f,"#define SAVE_OPLINE() EX(opline) = opline\n");
out($f,"#undef HANDLE_EXCEPTION\n");
out($f,"#undef HANDLE_EXCEPTION_LEAVE\n");
if (ZEND_VM_SPEC) {
out($f,"#define HANDLE_EXCEPTION() goto ZEND_HANDLE_EXCEPTION_SPEC_HANDLER\n");
out($f,"#define HANDLE_EXCEPTION_LEAVE() goto ZEND_HANDLE_EXCEPTION_SPEC_HANDLER\n");
} else {
out($f,"#define HANDLE_EXCEPTION() goto ZEND_HANDLE_EXCEPTION_HANDLER\n");
out($f,"#define HANDLE_EXCEPTION_LEAVE() goto ZEND_HANDLE_EXCEPTION_HANDLER\n");
}
out($f,"#define ZEND_VM_CONTINUE() goto *(void**)(OPLINE->handler)\n");
out($f,"#define ZEND_VM_RETURN() return\n");
out($f,"#define ZEND_VM_ENTER() execute_data = EG(current_execute_data); LOAD_OPLINE(); ZEND_VM_INTERRUPT_CHECK(); ZEND_VM_CONTINUE()\n");
out($f,"#define ZEND_VM_LEAVE() ZEND_VM_CONTINUE()\n");
out($f,"#define ZEND_VM_DISPATCH(opcode, opline) goto *(void**)(zend_vm_get_opcode_handler(opcode, opline));\n");
out($f,"\n");
break;
}
break;
case "EXECUTOR_NAME":
out($f, $m[1].$executor_name.$m[3]."\n");
break;
case "HELPER_VARS":
if ($kind != ZEND_VM_KIND_CALL) {
if ($kind == ZEND_VM_KIND_SWITCH) {
out($f,$m[1]."const void *dispatch_handler;\n");
}
// Emit local variables those are used for helpers' parameters
foreach ($params as $param => $x) {
out($f,$m[1].$param.";\n");
}
out($f,"#ifdef ZEND_VM_FP_GLOBAL_REG\n");
out($f,$m[1]."register zend_execute_data *execute_data __asm__(ZEND_VM_FP_GLOBAL_REG) = ex;\n");
out($f,"#else\n");
out($f,$m[1]."zend_execute_data *execute_data = ex;\n");
out($f,"#endif\n");
} else {
out($f,"#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f,$m[1]."const zend_op *orig_opline = opline;\n");
out($f,"#endif\n");
out($f,"#ifdef ZEND_VM_FP_GLOBAL_REG\n");
out($f,$m[1]."zend_execute_data *orig_execute_data = execute_data;\n");
out($f,$m[1]."execute_data = ex;\n");
out($f,"#else\n");
out($f,$m[1]."zend_execute_data *execute_data = ex;\n");
out($f,"#endif\n");
}
break;
case "INTERNAL_LABELS":
if ($kind == ZEND_VM_KIND_GOTO) {
// Emit array of labels of opcode handlers and code for
// zend_opcode_handlers initialization
$prolog = $m[1];
out($f,$prolog."if (UNEXPECTED(execute_data == NULL)) {\n");
out($f,$prolog."\tstatic const void* labels[] = {\n");
gen_labels($f, $spec, $kind, $prolog."\t\t", $specs);
out($f,$prolog."\t};\n");
out($f,$prolog."static const uint32_t specs[] = {\n");
gen_specs($f, $spec, $kind, $prolog."\t", $specs);
out($f,$prolog."};\n");
out($f,$prolog."\tzend_opcode_handlers = (const void **) labels;\n");
out($f,$prolog."\tzend_handlers_count = sizeof(labels) / sizeof(void*);\n");
out($f,$prolog."\tzend_spec_handlers = (const uint32_t *) specs;\n");
out($f,$prolog."\treturn;\n");
out($f,$prolog."}\n");
} else {
skip_blanks($f, $m[1], $m[3]);
}
break;
case "ZEND_VM_CONTINUE_LABEL":
if ($kind == ZEND_VM_KIND_CALL) {
// Only SWITCH dispatch method use it
out($f,"#if !defined(ZEND_VM_FP_GLOBAL_REG) || !defined(ZEND_VM_IP_GLOBAL_REG)\n");
out($f,$m[1]."\tint ret;".$m[3]."\n");
out($f,"#endif\n");
} else if ($kind == ZEND_VM_KIND_SWITCH) {
// Only SWITCH dispatch method use it
out($f,"zend_vm_continue:".$m[3]."\n");
} else {
skip_blanks($f, $m[1], $m[3]);
}
break;
case "ZEND_VM_DISPATCH":
// Emit code that dispatches to opcode handler
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f,"#if defined(ZEND_VM_FP_GLOBAL_REG) && defined(ZEND_VM_IP_GLOBAL_REG)\n");
out($f, $m[1]."((opcode_handler_t)OPLINE->handler)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n");
out($f, $m[1]."if (UNEXPECTED(!OPLINE))".$m[3]."\n");
out($f,"#else\n");
out($f, $m[1]."if (UNEXPECTED((ret = ((opcode_handler_t)OPLINE->handler)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)) != 0))".$m[3]."\n");
out($f,"#endif\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f, $m[1]."dispatch_handler = OPLINE->handler;\nzend_vm_dispatch:\n".$m[1]."switch ((int)(uintptr_t)dispatch_handler)".$m[3]."\n");
break;
case ZEND_VM_KIND_GOTO:
out($f, $m[1]."goto *(void**)(OPLINE->handler);".$m[3]."\n");
break;
}
break;
case "INTERNAL_EXECUTOR":
if ($kind == ZEND_VM_KIND_CALL) {
// Executor is defined as a set of functions
out($f,
"#ifdef ZEND_VM_FP_GLOBAL_REG\n" .
$m[1]."execute_data = orig_execute_data;\n" .
"# ifdef ZEND_VM_IP_GLOBAL_REG\n" .
$m[1]."opline = orig_opline;\n" .
"# endif\n" .
$m[1]."return;\n" .
"#else\n" .
$m[1]."if (EXPECTED(ret > 0)) {\n" .
$m[1]."\texecute_data = EG(current_execute_data);\n".
$m[1]."\tZEND_VM_INTERRUPT_CHECK();\n".
$m[1]."} else {\n" .
"# ifdef ZEND_VM_IP_GLOBAL_REG\n" .
$m[1]."\topline = orig_opline;\n" .
"# endif\n".
$m[1]."\treturn;\n".
$m[1]."}\n".
"#endif\n");
} else {
// Emit executor code
gen_executor_code($f, $spec, $kind, $m[1], $switch_labels);
}
break;
case "EXTERNAL_EXECUTOR":
if ($kind == ZEND_VM_KIND_CALL) {
gen_executor_code($f, $spec, $kind, $m[1]);
}
break;
case "INITIALIZER_NAME":
out($f, $m[1].$initializer_name.$m[3]."\n");
break;
case "EXTERNAL_LABELS":
// Emit code that initializes zend_opcode_handlers array
$prolog = $m[1];
if ($kind == ZEND_VM_KIND_GOTO) {
// Labels are defined in the executor itself, so we call it
// with execute_data NULL and it sets zend_opcode_handlers array
out($f,$prolog."");
out($f,$prolog.$executor_name."_ex(NULL);\n");
} else {
out($f,$prolog."static const void *labels[] = {\n");
gen_labels($f, $spec, $kind, $prolog."\t", $specs, $switch_labels);
out($f,$prolog."};\n");
out($f,$prolog."static const uint32_t specs[] = {\n");
gen_specs($f, $spec, $kind, $prolog."\t", $specs);
out($f,$prolog."};\n");
out($f,$prolog."zend_opcode_handlers = labels;\n");
out($f,$prolog."\tzend_handlers_count = sizeof(labels) / sizeof(void*);\n");
out($f,$prolog."zend_spec_handlers = specs;\n");
}
break;
default:
die("ERROR: Unknown keyword ".$m[2]." in skeleton file.\n");
}
} else {
// Copy the line as is
out($f, $line);
}
}
}
function parse_operand_spec($def, $lineno, $str, &$flags) {
global $vm_op_decode;
$flags = 0;
$a = explode("|",$str);
foreach($a as $val) {
if (isset($vm_op_decode[$val])) {
$flags |= $vm_op_decode[$val];
} else {
die("ERROR ($def:$lineno): Wrong operand type '$str'\n");
}
}
if (!($flags & ZEND_VM_OP_SPEC)) {
if (count($a) != 1) {
die("ERROR ($def:$lineno): Wrong operand type '$str'\n");
}
$a = array("ANY");
}
return array_flip($a);
}
function parse_ext_spec($def, $lineno, $str) {
global $vm_ext_decode;
$flags = 0;
$a = explode("|",$str);
foreach($a as $val) {
if (isset($vm_ext_decode[$val])) {
$flags |= $vm_ext_decode[$val];
} else {
die("ERROR ($def:$lineno): Wrong extended_value type '$str'\n");
}
}
return $flags;
}
function parse_spec_rules($def, $lineno, $str) {
global $used_extra_spec;
$ret = array();
$a = explode(",", $str);
foreach($a as $rule) {
$n = strpos($rule, "=");
if ($n !== false) {
$id = trim(substr($rule, 0, $n));
$val = trim(substr($rule, $n+1));
switch ($id) {
case "OP_DATA":
$ret["OP_DATA"] = parse_operand_spec($def, $lineno, $val, $devnull);
break;
default:
die("ERROR ($def:$lineno): Wrong specialization rules '$str'\n");
}
$used_extra_spec[$id] = 1;
} else {
switch ($rule) {
case "RETVAL":
$ret["RETVAL"] = array(0, 1);
break;
case "QUICK_ARG":
$ret["QUICK_ARG"] = array(0, 1);
break;
case "SMART_BRANCH":
$ret["SMART_BRANCH"] = array(0, 1, 2);
break;
case "NO_CONST_CONST":
$ret["NO_CONST_CONST"] = array(1);
break;
case "COMMUTATIVE":
$ret["COMMUTATIVE"] = array(1);
break;
default:
die("ERROR ($def:$lineno): Wrong specialization rules '$str'\n");
}
$used_extra_spec[$rule] = 1;
}
}
return $ret;
}
function gen_vm($def, $skel) {
global $definition_file, $skeleton_file, $executor_file,
$op_types, $list, $opcodes, $helpers, $params, $opnames,
$vm_op_flags, $used_extra_spec;
// Load definition file
$in = @file($def);
if (!$in) {
die("ERROR: Can not open definition file '$def'\n");
}
// We need absolute path to definition file to use it in #line directives
$definition_file = realpath($def);
// Load skeleton file
$skl = @file($skel);
if (!$skl) {
die("ERROR: Can not open skeleton file '$skel'\n");
}
// We need absolute path to skeleton file to use it in #line directives
$skeleton_file = realpath($skel);
// Parse definition file into tree
$lineno = 0;
$handler = null;
$helper = null;
$max_opcode_len = 0;
$max_opcode = 0;
$extra_num = 256;
$export = array();
foreach ($in as $line) {
++$lineno;
if (strpos($line,"ZEND_VM_HANDLER(") === 0) {
// Parsing opcode handler's definition
if (preg_match(
"/^ZEND_VM_HANDLER\(\s*([0-9]+)\s*,\s*([A-Z_]+)\s*,\s*([A-Z_|]+)\s*,\s*([A-Z_|]+)\s*(,\s*([A-Z_|]+)\s*)?(,\s*SPEC\(([A-Z_|=,]+)\)\s*)?\)/",
$line,
$m) == 0) {
die("ERROR ($def:$lineno): Invalid ZEND_VM_HANDLER definition.\n");
}
$code = (int)$m[1];
$op = $m[2];
$len = strlen($op);
$op1 = parse_operand_spec($def, $lineno, $m[3], $flags1);
$op2 = parse_operand_spec($def, $lineno, $m[4], $flags2);
$flags = $flags1 | ($flags2 << 8);
if (!empty($m[6])) {
$flags |= parse_ext_spec($def, $lineno, $m[6]);
}
if ($len > $max_opcode_len) {
$max_opcode_len = $len;
}
if ($code > $max_opcode) {
$max_opcode = $code;
}
if (isset($opcodes[$code])) {
die("ERROR ($def:$lineno): Opcode with code '$code' is already defined.\n");
}
if (isset($opnames[$op])) {
die("ERROR ($def:$lineno): Opcode with name '$op' is already defined.\n");
}
$opcodes[$code] = array("op"=>$op,"op1"=>$op1,"op2"=>$op2,"code"=>"","flags"=>$flags);
if (isset($m[8])) {
$opcodes[$code]["spec"] = parse_spec_rules($def, $lineno, $m[8]);
if (isset($opcodes[$code]["spec"]["NO_CONST_CONST"])) {
$opcodes[$code]["flags"] |= $vm_op_flags["ZEND_VM_NO_CONST_CONST"];
}
if (isset($opcodes[$code]["spec"]["COMMUTATIVE"])) {
$opcodes[$code]["flags"] |= $vm_op_flags["ZEND_VM_COMMUTATIVE"];
}
}
$opnames[$op] = $code;
$handler = $code;
$helper = null;
$list[$lineno] = array("handler"=>$handler);
} else if (strpos($line,"ZEND_VM_TYPE_SPEC_HANDLER(") === 0) {
// Parsing opcode handler's definition
if (preg_match(
"/^ZEND_VM_TYPE_SPEC_HANDLER\(\s*([A-Z_]+)\s*,\s*([^,]+),\s*([A-Za-z_]+)\s*,\s*([A-Z_|]+)\s*,\s*([A-Z_|]+)\s*(,\s*([A-Z_|]+)\s*)?(,\s*SPEC\(([A-Z_|=,]+)\)\s*)?\)/",
$line,
$m) == 0) {
die("ERROR ($def:$lineno): Invalid ZEND_VM_TYPE_HANDLER_HANDLER definition.\n");
}
$orig_op = $m[1];
if (!isset($opnames[$orig_op])) {
die("ERROR ($def:$lineno): Opcode with name '$orig_op' is not defined.\n");
}
$orig_code = $opnames[$orig_op];
$condition = $m[2];
$code = $extra_num++;
$op = $m[3];
$op1 = parse_operand_spec($def, $lineno, $m[4], $flags1);
$op2 = parse_operand_spec($def, $lineno, $m[5], $flags2);
$flags = $flags1 | ($flags2 << 8);
if (!empty($m[7])) {
$flags |= parse_ext_spec($def, $lineno, $m[7]);
}
if (isset($opcodes[$code])) {
die("ERROR ($def:$lineno): Opcode with name '$code' is already defined.\n");
}
$opcodes[$orig_code]['type_spec'][$code] = $condition;
$used_extra_spec["TYPE"] = 1;
$opcodes[$code] = array("op"=>$op,"op1"=>$op1,"op2"=>$op2,"code"=>"","flags"=>$flags);
if (isset($m[9])) {
$opcodes[$code]["spec"] = parse_spec_rules($def, $lineno, $m[9]);
if (isset($opcodes[$code]["spec"]["NO_CONST_CONST"])) {
$opcodes[$code]["flags"] |= $vm_op_flags["ZEND_VM_NO_CONST_CONST"];
}
if (isset($opcodes[$code]["spec"]["COMMUTATIVE"])) {
$opcodes[$code]["flags"] |= $vm_op_flags["ZEND_VM_COMMUTATIVE"];
}
}
$opnames[$op] = $code;
$handler = $code;
$helper = null;
$list[$lineno] = array("handler"=>$handler);
} else if (strpos($line,"ZEND_VM_HELPER(") === 0 || strpos($line,"ZEND_VM_INLINE_HELPER(") === 0) {
// Parsing helper's definition
if (preg_match(
"/^ZEND_VM(_INLINE)?_HELPER\(\s*([A-Za-z_]+)\s*,\s*([A-Z_|]+)\s*,\s*([A-Z_|]+)\s*(?:,\s*([^)]*))?\s*\)/",
$line,
$m) == 0) {
die("ERROR ($def:$lineno): Invalid ZEND_VM_HELPER definition.\n");
}
$inline = !empty($m[1]);
$helper = $m[2];
$op1 = parse_operand_spec($def, $lineno, $m[3], $flags1);
$op2 = parse_operand_spec($def, $lineno, $m[4], $flags2);
$param = isset($m[5]) ? $m[5] : null;
if (isset($helpers[$helper])) {
die("ERROR ($def:$lineno): Helper with name '$helper' is already defined.\n");
}
// Store parameters
foreach (explode(",", $param) as $p) {
$p = trim($p);
if ($p !== "") {
$params[$p] = 1;
}
}
$helpers[$helper] = array("op1"=>$op1,"op2"=>$op2,"param"=>$param,"code"=>"","inline"=>$inline);
$handler = null;
$list[$lineno] = array("helper"=>$helper);
} else if (strpos($line,"ZEND_VM_EXPORT_HANDLER(") === 0) {
if (preg_match(
"/^ZEND_VM_EXPORT_HANDLER\(\s*([A-Za-z_]+)\s*,\s*([A-Z_]+)\s*\)/",
$line,
$m) == 0) {
die("ERROR ($def:$lineno): Invalid ZEND_VM_EXPORT_HANDLER definition.\n");
}
if (!isset($opnames[$m[2]])) {
die("ERROR ($def:$lineno): opcode '{$m[2]}' is not defined.\n");
}
$export[] = array("handler",$m[1],$m[2]);
} else if (strpos($line,"ZEND_VM_EXPORT_HELPER(") === 0) {
if (preg_match(
"/^ZEND_VM_EXPORT_HELPER\(\s*([A-Za-z_]+)\s*,\s*([A-Za-z_]+)\s*\)/",
$line,
$m) == 0) {
die("ERROR ($def:$lineno): Invalid ZEND_VM_EXPORT_HELPER definition.\n");
}
if (!isset($helpers[$m[2]])) {
die("ERROR ($def:$lineno): helper '{$m[2]}' is not defined.\n");
}
$export[] = array("helper",$m[1],$m[2]);
} else if (strpos($line,"ZEND_VM_DEFINE_OP(") === 0) {
if (preg_match(
"/^ZEND_VM_DEFINE_OP\(\s*([0-9]+)\s*,\s*([A-Z_]+)\s*\);/",
$line,
$m) == 0) {
die("ERROR ($def:$lineno): Invalid ZEND_VM_DEFINE_OP definition.\n");
}
$code = (int)$m[1];
$op = $m[2];
$len = strlen($op);
if ($len > $max_opcode_len) {
$max_opcode_len = $len;
}
if ($code > $max_opcode) {
$max_opcode = $code;
}
if (isset($opcodes[$code])) {
die("ERROR ($def:$lineno): Opcode with code '$code' is already defined.\n");
}
if (isset($opnames[$op])) {
die("ERROR ($def:$lineno): Opcode with name '$op' is already defined.\n");
}
$opcodes[$code] = array("op"=>$op,"code"=>"");
$opnames[$op] = $code;
} else if ($handler !== null) {
// Add line of code to current opcode handler
$opcodes[$handler]["code"] .= $line;
} else if ($helper !== null) {
// Add line of code to current helper
$helpers[$helper]["code"] .= $line;
}
}
ksort($opcodes);
// Search for opcode handlers those are used by other opcode handlers
foreach ($opcodes as $dsc) {
if (preg_match("/ZEND_VM_DISPATCH_TO_HANDLER\(\s*([A-Z_]*)\s*\)/m", $dsc["code"], $m)) {
$op = $m[1];
if (!isset($opnames[$op])) {
die("ERROR ($def:$lineno): Opcode with name '$op' is not defined.\n");
}
$code = $opnames[$op];
$opcodes[$code]['use'] = 1;
}
}
// Generate opcode #defines (zend_vm_opcodes.h)
$code_len = strlen((string)$max_opcode);
$f = fopen(__DIR__ . "/zend_vm_opcodes.h", "w+") or die("ERROR: Cannot create zend_vm_opcodes.h\n");
// Insert header
out($f, $GLOBALS['header_text']);
fputs($f, "#ifndef ZEND_VM_OPCODES_H\n#define ZEND_VM_OPCODES_H\n\n");
fputs($f, "#define ZEND_VM_SPEC\t\t" . ZEND_VM_SPEC . "\n");
fputs($f, "#define ZEND_VM_LINES\t\t" . ZEND_VM_LINES . "\n");
fputs($f, "#define ZEND_VM_KIND_CALL\t" . ZEND_VM_KIND_CALL . "\n");
fputs($f, "#define ZEND_VM_KIND_SWITCH\t" . ZEND_VM_KIND_SWITCH . "\n");
fputs($f, "#define ZEND_VM_KIND_GOTO\t" . ZEND_VM_KIND_GOTO . "\n");
fputs($f, "#define ZEND_VM_KIND\t\t" . $GLOBALS["vm_kind_name"][ZEND_VM_KIND] . "\n");
fputs($f, "\n");
foreach($vm_op_flags as $name => $val) {
fprintf($f, "#define %-24s 0x%08x\n", $name, $val);
}
fputs($f, "#define ZEND_VM_OP1_FLAGS(flags) (flags & 0xff)\n");
fputs($f, "#define ZEND_VM_OP2_FLAGS(flags) ((flags >> 8) & 0xff)\n");
fputs($f, "\n");
fputs($f, "BEGIN_EXTERN_C()\n\n");
fputs($f, "ZEND_API const char *zend_get_opcode_name(zend_uchar opcode);\n");
fputs($f, "ZEND_API uint32_t zend_get_opcode_flags(zend_uchar opcode);\n\n");
fputs($f, "END_EXTERN_C()\n\n");
foreach ($opcodes as $code => $dsc) {
$code = str_pad((string)$code,$code_len," ",STR_PAD_LEFT);
$op = str_pad($dsc["op"],$max_opcode_len);
if ($code <= $max_opcode) {
fputs($f,"#define $op $code\n");
}
}
$code = str_pad((string)$max_opcode,$code_len," ",STR_PAD_LEFT);
$op = str_pad("ZEND_VM_LAST_OPCODE",$max_opcode_len);
fputs($f,"\n#define $op $code\n");
fputs($f, "\n#endif\n");
fclose($f);
echo "zend_vm_opcodes.h generated successfully.\n";
// zend_vm_opcodes.c
$f = fopen(__DIR__ . "/zend_vm_opcodes.c", "w+") or die("ERROR: Cannot create zend_vm_opcodes.c\n");
// Insert header
out($f, $GLOBALS['header_text']);
fputs($f,"#include <stdio.h>\n");
fputs($f,"#include <zend.h>\n\n");
fputs($f,"static const char *zend_vm_opcodes_names[".($max_opcode + 1)."] = {\n");
for ($i = 0; $i <= $max_opcode; $i++) {
fputs($f,"\t".(isset($opcodes[$i]["op"])?'"'.$opcodes[$i]["op"].'"':"NULL").",\n");
}
fputs($f, "};\n\n");
fputs($f,"static uint32_t zend_vm_opcodes_flags[".($max_opcode + 1)."] = {\n");
for ($i = 0; $i <= $max_opcode; $i++) {
fprintf($f, "\t0x%08x,\n", isset($opcodes[$i]["flags"]) ? $opcodes[$i]["flags"] : 0);
}
fputs($f, "};\n\n");
fputs($f, "ZEND_API const char* zend_get_opcode_name(zend_uchar opcode) {\n");
fputs($f, "\treturn zend_vm_opcodes_names[opcode];\n");
fputs($f, "}\n");
fputs($f, "ZEND_API uint32_t zend_get_opcode_flags(zend_uchar opcode) {\n");
fputs($f, "\treturn zend_vm_opcodes_flags[opcode];\n");
fputs($f, "}\n");
fclose($f);
echo "zend_vm_opcodes.c generated successfully.\n";
// Generate zend_vm_execute.h
$f = fopen(__DIR__ . "/zend_vm_execute.h", "w+") or die("ERROR: Cannot create zend_vm_execute.h\n");
$executor_file = realpath(__DIR__ . "/zend_vm_execute.h");
// Insert header
out($f, $GLOBALS['header_text']);
out($f, "#ifdef ZEND_WIN32\n");
// Suppress free_op1 warnings on Windows
out($f, "# pragma warning(once : 4101)\n");
if (ZEND_VM_SPEC) {
// Suppress (<non-zero constant> || <expression>) warnings on windows
out($f, "# pragma warning(once : 6235)\n");
// Suppress (<zero> && <expression>) warnings on windows
out($f, "# pragma warning(once : 6237)\n");
// Suppress (<non-zero constant> && <expression>) warnings on windows
out($f, "# pragma warning(once : 6239)\n");
// Suppress (<expression> && <non-zero constant>) warnings on windows
out($f, "# pragma warning(once : 6240)\n");
// Suppress (<non-zero constant> || <non-zero constant>) warnings on windows
out($f, "# pragma warning(once : 6285)\n");
// Suppress (<non-zero constant> || <expression>) warnings on windows
out($f, "# pragma warning(once : 6286)\n");
// Suppress constant with constant comparison warnings on windows
out($f, "# pragma warning(once : 6326)\n");
}
out($f, "#endif\n");
// Support for ZEND_USER_OPCODE
out($f, "static user_opcode_handler_t zend_user_opcode_handlers[256] = {\n");
for ($i = 0; $i < 255; ++$i) {
out($f, "\t(user_opcode_handler_t)NULL,\n");
}
out($f, "\t(user_opcode_handler_t)NULL\n};\n\n");
out($f, "static zend_uchar zend_user_opcodes[256] = {");
for ($i = 0; $i < 255; ++$i) {
if ($i % 16 == 1) out($f, "\n\t");
out($f, "$i,");
}
out($f, "255\n};\n\n");
// Generate specialized executor
gen_executor($f, $skl, ZEND_VM_SPEC, ZEND_VM_KIND, "execute", "zend_init_opcodes_handlers");
// Generate zend_vm_get_opcode_handler() function
out($f, "static const void *zend_vm_get_opcode_handler_ex(uint32_t spec, const zend_op* op)\n");
out($f, "{\n");
if (!ZEND_VM_SPEC) {
out($f, "\treturn zend_opcode_handlers[spec];\n");
} else {
out($f, "\tstatic const int zend_vm_decode[] = {\n");
out($f, "\t\t_UNUSED_CODE, /* 0 */\n");
out($f, "\t\t_CONST_CODE, /* 1 = IS_CONST */\n");
out($f, "\t\t_TMP_CODE, /* 2 = IS_TMP_VAR */\n");
out($f, "\t\t_UNUSED_CODE, /* 3 */\n");
out($f, "\t\t_VAR_CODE, /* 4 = IS_VAR */\n");
out($f, "\t\t_UNUSED_CODE, /* 5 */\n");
out($f, "\t\t_UNUSED_CODE, /* 6 */\n");
out($f, "\t\t_UNUSED_CODE, /* 7 */\n");
out($f, "\t\t_UNUSED_CODE, /* 8 = IS_UNUSED */\n");
out($f, "\t\t_UNUSED_CODE, /* 9 */\n");
out($f, "\t\t_UNUSED_CODE, /* 10 */\n");
out($f, "\t\t_UNUSED_CODE, /* 11 */\n");
out($f, "\t\t_UNUSED_CODE, /* 12 */\n");
out($f, "\t\t_UNUSED_CODE, /* 13 */\n");
out($f, "\t\t_UNUSED_CODE, /* 14 */\n");
out($f, "\t\t_UNUSED_CODE, /* 15 */\n");
out($f, "\t\t_CV_CODE /* 16 = IS_CV */\n");
out($f, "\t};\n");
out($f, "\tuint32_t offset = 0;\n");
out($f, "\tif (spec & SPEC_RULE_OP1) offset = offset * 5 + zend_vm_decode[op->op1_type];\n");
out($f, "\tif (spec & SPEC_RULE_OP2) offset = offset * 5 + zend_vm_decode[op->op2_type];\n");
if (isset($used_extra_spec["OP_DATA"])) {
out($f, "\tif (spec & SPEC_RULE_OP_DATA) offset = offset * 5 + zend_vm_decode[(op + 1)->op1_type];\n");
}
if (isset($used_extra_spec["RETVAL"])) {
out($f, "\tif (spec & SPEC_RULE_RETVAL) offset = offset * 2 + (op->result_type != IS_UNUSED);\n");
}
if (isset($used_extra_spec["QUICK_ARG"])) {
out($f, "\tif (spec & SPEC_RULE_QUICK_ARG) offset = offset * 2 + (op->op2.num < MAX_ARG_FLAG_NUM);\n");
}
if (isset($used_extra_spec["SMART_BRANCH"])) {
out($f, "\tif (spec & SPEC_RULE_SMART_BRANCH) {\n");
out($f, "\t\toffset = offset * 3;\n");
out($f, "\t\tif ((op+1)->opcode == ZEND_JMPZ) {\n");
out($f, "\t\t\toffset += 1;\n");
out($f, "\t\t} else if ((op+1)->opcode == ZEND_JMPNZ) {\n");
out($f, "\t\t\toffset += 2;\n");
out($f, "\t\t}\n");
out($f, "\t}\n");
}
out($f, "\treturn zend_opcode_handlers[(spec & SPEC_START_MASK) + offset];\n");
}
out($f, "}\n\n");
out($f, "static const void *zend_vm_get_opcode_handler(zend_uchar opcode, const zend_op* op)\n");
out($f, "{\n");
if (!ZEND_VM_SPEC) {
out($f, "\treturn zend_vm_get_opcode_handler_ex(opcode, op);\n");
} else {
out($f, "\treturn zend_vm_get_opcode_handler_ex(zend_spec_handlers[opcode], op);\n");
}
out($f, "}\n\n");
// Generate zend_vm_get_opcode_handler() function
out($f, "ZEND_API void zend_vm_set_opcode_handler(zend_op* op)\n");
out($f, "{\n");
out($f, "\top->handler = zend_vm_get_opcode_handler(zend_user_opcodes[op->opcode], op);\n");
out($f, "}\n\n");
// Generate zend_vm_set_opcode_handler_ex() function
out($f, "ZEND_API void zend_vm_set_opcode_handler_ex(zend_op* op, uint32_t op1_info, uint32_t op2_info, uint32_t res_info)\n");
out($f, "{\n");
out($f, "\tzend_uchar opcode = zend_user_opcodes[op->opcode];\n");
if (!ZEND_VM_SPEC) {
out($f, "\top->handler = zend_vm_get_opcode_handler_ex(opcode, op);\n");
} else {
out($f, "\tuint32_t spec = zend_spec_handlers[opcode];\n");
if (isset($used_extra_spec["TYPE"])) {
out($f, "\tswitch (opcode) {\n");
foreach($opcodes as $code => $dsc) {
if (isset($dsc['type_spec'])) {
$orig_op = $dsc['op'];
out($f, "\t\tcase $orig_op:\n");
$first = true;
foreach($dsc['type_spec'] as $code => $condition) {
if ($first) {
out($f, "\t\t\tif ($condition) {\n");
$first = false;
} else {
out($f, "\t\t\t} else if ($condition) {\n");
}
$spec_dsc = $opcodes[$code];
if (isset($spec_dsc["spec"]["NO_CONST_CONST"])) {
out($f, "\t\t\t\tif (op->op1_type == IS_CONST && op->op2_type == IS_CONST) {\n");
out($f, "\t\t\t\t\tbreak;\n");
out($f, "\t\t\t\t}\n");
}
out($f, "\t\t\t\tspec = ${spec_dsc['spec_code']};\n");
if (isset($spec_dsc["spec"]["COMMUTATIVE"])) {
out($f, "\t\t\t\tif (op->op1_type > op->op2_type) {\n");
out($f, "\t\t\t\t\tzend_swap_operands(op);\n");
out($f, "\t\t\t\t}\n");
}
}
if (!$first) {
out($f, "\t\t\t}\n");
}
out($f, "\t\t\tbreak;\n");
}
}
out($f, "\t\tdefault:\n");
out($f, "\t\t\tbreak;\n");
out($f, "\t}\n");
}
out($f, "\top->handler = zend_vm_get_opcode_handler_ex(spec, op);\n");
}
out($f, "}\n\n");
// Generate zend_vm_call_opcode_handler() function
if (ZEND_VM_KIND == ZEND_VM_KIND_CALL) {
out($f, "ZEND_API int zend_vm_call_opcode_handler(zend_execute_data* ex)\n");
out($f, "{\n");
out($f, "\tint ret;\n");
out($f, "#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f, "\tconst zend_op *orig_opline = opline;\n");
out($f, "#endif\n");
out($f, "#ifdef ZEND_VM_FP_GLOBAL_REG\n");
out($f, "\tzend_execute_data *orig_execute_data = execute_data;\n");
out($f, "\texecute_data = ex;\n");
out($f, "#else\n");
out($f, "\tzend_execute_data *execute_data = ex;\n");
out($f, "#endif\n");
out($f, "\n");
out($f, "\tLOAD_OPLINE();\n");
out($f,"#if defined(ZEND_VM_FP_GLOBAL_REG) && defined(ZEND_VM_IP_GLOBAL_REG)\n");
out($f, "\t((opcode_handler_t)OPLINE->handler)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n");
out($f, "\tif (EXPECTED(opline)) {\n");
out($f, "\t\tret = execute_data != ex ? (int)(execute_data->prev_execute_data != ex) + 1 : 0;\n");
out($f, "\t\tSAVE_OPLINE();\n");
out($f, "\t} else {\n");
out($f, "\t\tret = -1;\n");
out($f, "\t}\n");
out($f, "#else\n");
out($f, "\tret = ((opcode_handler_t)OPLINE->handler)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n");
out($f, "\tSAVE_OPLINE();\n");
out($f, "#endif\n");
out($f, "#ifdef ZEND_VM_FP_GLOBAL_REG\n");
out($f, "\texecute_data = orig_execute_data;\n");
out($f, "#endif\n");
out($f, "#ifdef ZEND_VM_IP_GLOBAL_REG\n");
out($f, "\topline = orig_opline;\n");
out($f, "#endif\n");
out($f, "\treturn ret;\n");
out($f, "}\n\n");
} else {
out($f, "ZEND_API int zend_vm_call_opcode_handler(zend_execute_data* ex)\n");
out($f, "{\n");
out($f, "\tzend_error_noreturn(E_CORE_ERROR, \"zend_vm_call_opcode_handler() is not supported\");\n");
out($f, "\treturn 0;\n");
out($f, "}\n\n");
}
// Export handlers and helpers
if (count($export) > 0 &&
ZEND_VM_KIND != ZEND_VM_KIND_CALL) {
out($f,"#undef OPLINE\n");
out($f,"#undef DCL_OPLINE\n");
out($f,"#undef USE_OPLINE\n");
out($f,"#undef LOAD_OPLINE\n");
out($f,"#undef LOAD_NEXT_OPLINE\n");
out($f,"#undef SAVE_OPLINE\n");
out($f,"#define OPLINE EX(opline)\n");
out($f,"#define DCL_OPLINE\n");
out($f,"#define USE_OPLINE const zend_op *opline = EX(opline);\n");
out($f,"#define LOAD_OPLINE()\n");
out($f,"#define LOAD_NEXT_OPLINE() ZEND_VM_INC_OPCODE()\n");
out($f,"#define SAVE_OPLINE()\n");
out($f,"#undef HANDLE_EXCEPTION\n");
out($f,"#undef HANDLE_EXCEPTION_LEAVE\n");
out($f,"#define HANDLE_EXCEPTION() LOAD_OPLINE(); ZEND_VM_CONTINUE()\n");
out($f,"#define HANDLE_EXCEPTION_LEAVE() LOAD_OPLINE(); ZEND_VM_LEAVE()\n");
out($f,"#undef ZEND_VM_CONTINUE\n");
out($f,"#undef ZEND_VM_RETURN\n");
out($f,"#undef ZEND_VM_ENTER\n");
out($f,"#undef ZEND_VM_LEAVE\n");
out($f,"#undef ZEND_VM_DISPATCH\n");
out($f,"#define ZEND_VM_CONTINUE() return 0\n");
out($f,"#define ZEND_VM_RETURN() return -1\n");
out($f,"#define ZEND_VM_ENTER() return 1\n");
out($f,"#define ZEND_VM_LEAVE() return 2\n");
out($f,"#define ZEND_VM_DISPATCH(opcode, opline) return zend_vm_get_opcode_handler(opcode, opline)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n\n");
out($f,"\n");
}
foreach ($export as $dsk) {
list($kind, $func, $name) = $dsk;
out($f, "ZEND_API int $func(");
if ($kind == "handler") {
out($f, "ZEND_OPCODE_HANDLER_ARGS)\n");
$code = $opcodes[$opnames[$name]]['code'];
} else {
$h = $helpers[$name];
if ($h['param'] == null) {
out($f, "ZEND_OPCODE_HANDLER_ARGS)\n");
} else {
out($f, $h['param']. " ZEND_OPCODE_HANDLER_ARGS_DC)\n");
}
$code = $h['code'];
}
$done = 0;
if (ZEND_VM_KIND == ZEND_VM_KIND_CALL) {
if ($kind == "handler") {
$op = $opcodes[$opnames[$name]];
if (isset($op['op1']["ANY"]) && isset($op['op2']["ANY"])) {
out($f, "{\n\treturn ".$name.(ZEND_VM_SPEC?"_SPEC":"")."_HANDLER(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n}\n\n");
$done = 1;
}
} else if ($helpers[$name]["param"] == null) {
$h = $helpers[$name];
if (isset($h['op1']["ANY"]) && isset($h['op2']["ANY"])) {
out($f, "{\n\treturn ".$name.(ZEND_VM_SPEC?"_SPEC":"")."(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n}\n\n");
$done = 1;
}
}
}
if (!$done) {
gen_code($f, 0, ZEND_VM_KIND_CALL, 1, $code, 'ANY', 'ANY', $name);
}
}
fclose($f);
echo "zend_vm_execute.h generated successfully.\n";
}
function usage() {
echo("\nUsage: php zend_vm_gen.php [options]\n".
"\nOptions:".
"\n --with-vm-kind=CALL|SWITCH|GOTO - select threading model (default is CALL)".
"\n --without-specializer - disable executor specialization".
"\n --with-lines - enable #line directives".
"\n\n");
}
// Parse arguments
for ($i = 1; $i < $argc; $i++) {
if (strpos($argv[$i],"--with-vm-kind=") === 0) {
$kind = substr($argv[$i], strlen("--with-vm-kind="));
switch ($kind) {
case "CALL":
define("ZEND_VM_KIND", ZEND_VM_KIND_CALL);
break;
case "SWITCH":
define("ZEND_VM_KIND", ZEND_VM_KIND_SWITCH);
break;
case "GOTO":
define("ZEND_VM_KIND", ZEND_VM_KIND_GOTO);
break;
default:
echo("ERROR: Invalid vm kind '$kind'\n");
usage();
die();
}
} else if ($argv[$i] == "--without-specializer") {
// Disabling specialization
define("ZEND_VM_SPEC", 0);
} else if ($argv[$i] == "--with-lines") {
// Enabling debugging using original zend_vm_def.h
define("ZEND_VM_LINES", 1);
} else if ($argv[$i] == "--help") {
usage();
exit();
} else {
echo("ERROR: Invalid option '".$argv[$i]."'\n");
usage();
die();
}
}
// Using defaults
if (!defined("ZEND_VM_KIND")) {
// Using CALL threading by default
define("ZEND_VM_KIND", ZEND_VM_KIND_CALL);
}
if (!defined("ZEND_VM_SPEC")) {
// Using specialized executor by default
define("ZEND_VM_SPEC", 1);
}
if (!defined("ZEND_VM_LINES")) {
// Disabling #line directives
define("ZEND_VM_LINES", 0);
}
gen_vm(__DIR__ . "/zend_vm_def.h", __DIR__ . "/zend_vm_execute.skl");
?>
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