PHP gen_labels函数代码示例

本文整理汇总了PHP中gen_labels函数的典型用法代码示例。如果您正苦于以下问题：PHP gen_labels函数的具体用法？PHP gen_labels怎么用？PHP gen_labels使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了gen_labels函数的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。

示例1: gen_executor


//.........这里部分代码省略.........
                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, $prolog . "\t\t");
                        out($f, $prolog . "\t};\n");
                        out($f, $prolog . "\tzend_opcode_handlers = (const void **)labels;\n");
                        out($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");

开发者ID:sutandang，项目名称:php-src，代码行数:67，代码来源:zend_vm_gen.php

示例2: gen_executor


//.........这里部分代码省略.........
                            out($f, "#define LOAD_REGS()\n");
                            out($f, "#define ZEND_VM_CONTINUE() goto *(void**)(OPLINE->handler)\n");
                            out($f, "#define ZEND_VM_RETURN()   EG(in_execution) = original_in_execution; return\n");
                            out($f, "#define ZEND_VM_ENTER()    goto zend_vm_enter\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\n");
                            out($f, "#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL execute_data TSRMLS_CC\n");
                            break;
                    }
                    break;
                case "EXECUTOR_NAME":
                    out($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, $m[1] . "opcode_handler_t dispatch_handler;\n");
                        }
                        // Emit local variables those are used for helpers' parameters
                        foreach ($params as $param => $x) {
                            out($f, $m[1] . $param . ";\n");
                        }
                    } else {
                        skip_blanks($f, $m[1], $m[3] . "\n");
                    }
                    break;
                case "INTERNAL_LABELS":
                    if ($kind == ZEND_VM_KIND_GOTO) {
                        // Emit array of labels of opcode handlers and code for
                        // zend_opcode_handlers initialization
                        $prolog = $m[1];
                        out($f, $prolog . "if (execute_data == NULL) {\n");
                        out($f, $prolog . "\tstatic const opcode_handler_t labels[] = {\n");
                        gen_labels($f, $spec, $kind, $prolog . "\t\t");
                        out($f, $prolog . "\t};\n");
                        out($f, $prolog . "\tzend_opcode_handlers = (opcode_handler_t*)labels;\n");
                        out($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, $m[1] . "\tint ret;" . $m[3] . "\n");
                    } else {
                        if ($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, $m[1] . "if ((ret = OPLINE->handler(execute_data TSRMLS_CC)) > 0)" . $m[3] . "\n");
                            break;
                        case ZEND_VM_KIND_SWITCH:
                            out($f, $m[1] . "dispatch_handler = OPLINE->handler;\nzend_vm_dispatch:\n" . $m[1] . "switch ((int)dispatch_handler)" . $m[3] . "\n");
                            break;
                        case ZEND_VM_KIND_GOTO:
                            out($f, $m[1] . "goto *(void**)(OPLINE->handler);" . $m[3] . "\n");

开发者ID:rrehbeindoi，项目名称:php-src，代码行数:67，代码来源:zend_vm_gen.php

示例3: gen_executor

function gen_executor($f, $skl, $spec, $kind, $executor_name, $initializer_name, $old)
{
    global $params, $skeleton_file, $line_no;
    $lineno = 0;
    foreach ($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":
                    if (ZEND_VM_OLD_EXECUTOR) {
                        out($f, "static int zend_vm_old_executor = 0;\n\n");
                    }
                    out($f, "static opcode_handler_t zend_vm_get_opcode_handler(zend_uchar opcode, int op1_type, int op2_type);\n\n");
                    switch ($kind) {
                        case ZEND_VM_KIND_CALL:
                            out($f, "\n");
                            out($f, "#define ZEND_VM_CONTINUE() return 0\n");
                            out($f, "#define ZEND_VM_RETURN() return 1\n");
                            out($f, "#define ZEND_VM_DISPATCH(opcode, opline) return zend_vm_get_opcode_handler(opcode, opline->op1.op_type, opline->op2.op_type)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n\n");
                            out($f, "#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL execute_data TSRMLS_CC\n");
                            break;
                        case ZEND_VM_KIND_SWITCH:
                            out($f, "\n");
                            out($f, "#define ZEND_VM_CONTINUE() goto zend_vm_continue\n");
                            out($f, "#define ZEND_VM_RETURN()   return\n");
                            out($f, "#define ZEND_VM_DISPATCH(opcode, opline) dispatch_handler = zend_vm_get_opcode_handler(opcode, opline->op1.op_type, opline->op2.op_type); goto zend_vm_dispatch;\n\n");
                            out($f, "#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL &execute_data TSRMLS_CC\n");
                            break;
                        case ZEND_VM_KIND_GOTO:
                            out($f, "\n");
                            out($f, "#define ZEND_VM_CONTINUE() goto *(void**)(EX(opline)->handler)\n");
                            out($f, "#define ZEND_VM_RETURN()   return\n");
                            out($f, "#define ZEND_VM_DISPATCH(opcode, opline) goto *(void**)(zend_vm_get_opcode_handler(opcode, opline->op1.op_type, opline->op2.op_type));\n\n");
                            out($f, "#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL &execute_data TSRMLS_CC\n");
                            break;
                        case ZEND_VM_KIND_GOTO2:
                            out($f, "\n");
                            out($f, "#define ZEND_VM_CONTINUE() goto *(void**)(EX(opline)->handler)\n");
                            //out($f,"#define ZEND_VM_RETURN()   return\n");
                            out($f, "#define ZEND_VM_RETURN()   goto ZEND_RETURN_HANDLER\n");
                            out($f, "#define ZEND_VM_DISPATCH(opcode, opline) goto *(void**)(zend_vm_get_opcode_handler(opcode, opline->op1.op_type, opline->op2.op_type));\n\n");
                            out($f, "#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL execute_data TSRMLS_CC\n");
                            break;
                    }
                    out($f, "#undef EX\n");
                    if ($kind == ZEND_VM_KIND_GOTO2) {
                        out($f, "#define EX(element) execute_data->element\n");
                    } else {
                        out($f, "#define EX(element) execute_data.element\n");
                    }
                    out($f, "#define ZEND_OPCODE_HANDLER_ARGS zend_execute_data *execute_data TSRMLS_DC\n");
                    out($f, "#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU execute_data TSRMLS_CC\n");
                    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, $m[1] . "opcode_handler_t dispatch_handler;\n");
                        }
                        // Emit local variables those are used for helpers' parameters
                        foreach ($params as $param => $x) {
                            out($f, $m[1] . $param . ";\n");
                        }
                    } else {
                        skip_blanks($f, $m[1], $m[3] . "\n");
                    }
                    if ($kind == ZEND_VM_KIND_GOTO2) {
                        out($f, $m[1] . "zend_execute_data* execute_data = do_alloca(sizeof(zend_execute_data));\n");
                    } else {
                        out($f, $m[1] . "zend_execute_data execute_data;\n");
                    }
                    break;
                case "INTERNAL_LABELS":
                    if ($kind == ZEND_VM_KIND_GOTO || $kind == ZEND_VM_KIND_GOTO2) {
                        // Emit array of labels of opcode handlers and code for
                        // zend_opcode_handlers initialization
                        $prolog = $m[1];
                        out($f, $prolog . "if (op_array == NULL) {\n");
                        out($f, $prolog . "\tstatic const opcode_handler_t labels[] = {\n");
                        gen_labels($f, $spec, $kind, $prolog . "\t\t");
                        out($f, $prolog . "\t};\n");
                        out($f, $prolog . "\tzend_opcode_handlers = (opcode_handler_t*)labels;\n");
                        out($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_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":
//.........这里部分代码省略.........

开发者ID:kennyb，项目名称:php-broken，代码行数:101，代码来源:zend_vm_gen.php

注：本文中的gen_labels函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。