J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1 | /* |
Coleen Phillimore | 7e2463e | 2014-05-05 19:53:00 -0400 | [diff] [blame] | 2 | * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
Erik Trimble | ba7c173 | 2010-05-27 19:08:38 -0700 | [diff] [blame] | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 22 | * |
| 23 | */ |
| 24 | |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 25 | #ifndef SHARE_VM_UTILITIES_CONSTANTTAG_HPP |
| 26 | #define SHARE_VM_UTILITIES_CONSTANTTAG_HPP |
| 27 | |
Stefan Karlsson | f78228b | 2016-04-12 09:53:43 +0200 | [diff] [blame] | 28 | #include "memory/allocation.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 29 | #include "prims/jvm.h" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 30 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 31 | // constant tags in Java .class files |
| 32 | |
| 33 | |
| 34 | enum { |
| 35 | // See jvm.h for shared JVM_CONSTANT_XXX tags |
| 36 | // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java |
| 37 | // Hotspot specific tags |
| 38 | JVM_CONSTANT_Invalid = 0, // For bad value initialization |
| 39 | JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) |
| 40 | JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use |
| 41 | JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 42 | JVM_CONSTANT_StringIndex = 102, // Temporary tag while constructing constant pool |
| 43 | JVM_CONSTANT_UnresolvedClassInError = 103, // Error tag due to resolution error |
| 44 | JVM_CONSTANT_MethodHandleInError = 104, // Error tag due to resolution error |
| 45 | JVM_CONSTANT_MethodTypeInError = 105, // Error tag due to resolution error |
Coleen Phillimore | b8b9434 | 2013-02-22 08:36:42 -0500 | [diff] [blame] | 46 | JVM_CONSTANT_InternalMax = 105 // Last implementation tag |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 47 | }; |
| 48 | |
| 49 | |
| 50 | class constantTag VALUE_OBJ_CLASS_SPEC { |
| 51 | private: |
| 52 | jbyte _tag; |
| 53 | public: |
| 54 | bool is_klass() const { return _tag == JVM_CONSTANT_Class; } |
| 55 | bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } |
| 56 | bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } |
| 57 | bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } |
| 58 | bool is_string() const { return _tag == JVM_CONSTANT_String; } |
| 59 | bool is_int() const { return _tag == JVM_CONSTANT_Integer; } |
| 60 | bool is_float() const { return _tag == JVM_CONSTANT_Float; } |
| 61 | bool is_long() const { return _tag == JVM_CONSTANT_Long; } |
| 62 | bool is_double() const { return _tag == JVM_CONSTANT_Double; } |
| 63 | bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } |
| 64 | bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } |
| 65 | |
| 66 | bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } |
| 67 | |
| 68 | bool is_unresolved_klass() const { |
| 69 | return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError; |
| 70 | } |
| 71 | |
| 72 | bool is_unresolved_klass_in_error() const { |
| 73 | return _tag == JVM_CONSTANT_UnresolvedClassInError; |
| 74 | } |
| 75 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 76 | bool is_method_handle_in_error() const { |
| 77 | return _tag == JVM_CONSTANT_MethodHandleInError; |
| 78 | } |
| 79 | bool is_method_type_in_error() const { |
| 80 | return _tag == JVM_CONSTANT_MethodTypeInError; |
| 81 | } |
| 82 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 83 | bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 84 | bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } |
| 85 | |
| 86 | bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } |
John R Rose | 849e0ff | 2008-11-12 22:33:26 -0800 | [diff] [blame] | 87 | bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 88 | bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } |
| 89 | bool is_symbol() const { return is_utf8(); } |
| 90 | |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 91 | bool is_method_type() const { return _tag == JVM_CONSTANT_MethodType; } |
| 92 | bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; } |
John R Rose | 16784a7 | 2011-04-07 17:02:30 -0700 | [diff] [blame] | 93 | bool is_invoke_dynamic() const { return _tag == JVM_CONSTANT_InvokeDynamic; } |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 94 | |
John R Rose | ce0125e | 2010-10-30 13:08:23 -0700 | [diff] [blame] | 95 | bool is_loadable_constant() const { |
| 96 | return ((_tag >= JVM_CONSTANT_Integer && _tag <= JVM_CONSTANT_String) || |
| 97 | is_method_type() || is_method_handle() || |
Coleen Phillimore | b8b9434 | 2013-02-22 08:36:42 -0500 | [diff] [blame] | 98 | is_unresolved_klass()); |
John R Rose | ce0125e | 2010-10-30 13:08:23 -0700 | [diff] [blame] | 99 | } |
| 100 | |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 101 | constantTag() { |
| 102 | _tag = JVM_CONSTANT_Invalid; |
| 103 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 104 | constantTag(jbyte tag) { |
| 105 | assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) || |
John R Rose | a4e4149 | 2010-07-15 18:40:45 -0700 | [diff] [blame] | 106 | (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) || |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 107 | (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag"); |
| 108 | _tag = tag; |
| 109 | } |
| 110 | |
Coleen Phillimore | fa72ad2 | 2013-10-11 11:23:49 -0400 | [diff] [blame] | 111 | jbyte value() const { return _tag; } |
Coleen Phillimore | 7e2463e | 2014-05-05 19:53:00 -0400 | [diff] [blame] | 112 | jbyte error_value() const; |
Coleen Phillimore | fa72ad2 | 2013-10-11 11:23:49 -0400 | [diff] [blame] | 113 | jbyte non_error_value() const; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 114 | |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 115 | BasicType basic_type() const; // if used with ldc, what kind of value gets pushed? |
| 116 | |
| 117 | const char* internal_name() const; // for error reporting |
| 118 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 119 | void print_on(outputStream* st) const PRODUCT_RETURN; |
| 120 | }; |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 121 | |
| 122 | #endif // SHARE_VM_UTILITIES_CONSTANTTAG_HPP |