23 */ 24 25 #ifndef SHARE_UTILITIES_CONSTANTTAG_HPP 26 #define SHARE_UTILITIES_CONSTANTTAG_HPP 27 28 #include "jvm.h" 29 #include "utilities/globalDefinitions.hpp" 30 31 32 class outputStream; 33 34 // constant tags in Java .class files 35 36 enum { 37 // See jvm.h for shared JVM_CONSTANT_XXX tags 38 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 39 // Hotspot specific tags 40 JVM_CONSTANT_Invalid = 0, // For bad value initialization 41 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) 42 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use 43 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool 44 JVM_CONSTANT_StringIndex = 102, // Temporary tag while constructing constant pool 45 JVM_CONSTANT_UnresolvedClassInError = 103, // Error tag due to resolution error 46 JVM_CONSTANT_MethodHandleInError = 104, // Error tag due to resolution error 47 JVM_CONSTANT_MethodTypeInError = 105, // Error tag due to resolution error 48 JVM_CONSTANT_DynamicInError = 106, // Error tag due to resolution error 49 JVM_CONSTANT_InternalMax = 106 // Last implementation tag 50 }; 51 52 53 class constantTag { 54 private: 55 jbyte _tag; 56 public: 57 bool is_klass() const { return _tag == JVM_CONSTANT_Class; } 58 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } 59 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } 60 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } 61 bool is_string() const { return _tag == JVM_CONSTANT_String; } 62 bool is_int() const { return _tag == JVM_CONSTANT_Integer; } 63 bool is_float() const { return _tag == JVM_CONSTANT_Float; } 64 bool is_long() const { return _tag == JVM_CONSTANT_Long; } 65 bool is_double() const { return _tag == JVM_CONSTANT_Double; } 66 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } 67 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } 68 69 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } 70 71 bool is_unresolved_klass() const { 72 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError; 73 } 74 75 bool is_unresolved_klass_in_error() const { 76 return _tag == JVM_CONSTANT_UnresolvedClassInError; 77 } 78 79 bool is_method_handle_in_error() const { 80 return _tag == JVM_CONSTANT_MethodHandleInError; 81 } 82 bool is_method_type_in_error() const { 83 return _tag == JVM_CONSTANT_MethodTypeInError; 84 } 85 86 bool is_dynamic_constant_in_error() const { 87 return _tag == JVM_CONSTANT_DynamicInError; 88 } 89 90 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } 91 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } 92 93 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } 94 bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); } 95 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } 96 bool is_symbol() const { return is_utf8(); } 99 bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; } 100 bool is_dynamic_constant() const { return _tag == JVM_CONSTANT_Dynamic; } 101 bool is_invoke_dynamic() const { return _tag == JVM_CONSTANT_InvokeDynamic; } 102 103 bool has_bootstrap() const { 104 return (_tag == JVM_CONSTANT_Dynamic || 105 _tag == JVM_CONSTANT_DynamicInError || 106 _tag == JVM_CONSTANT_InvokeDynamic); 107 } 108 109 bool is_loadable_constant() const { 110 return ((_tag >= JVM_CONSTANT_Integer && _tag <= JVM_CONSTANT_String) || 111 is_method_type() || is_method_handle() || is_dynamic_constant() || 112 is_unresolved_klass()); 113 } 114 115 constantTag() { 116 _tag = JVM_CONSTANT_Invalid; 117 } 118 constantTag(jbyte tag) { 119 assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) || 120 (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) || 121 (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag"); 122 _tag = tag; 123 } 124 125 static constantTag ofBasicType(BasicType bt) { 126 if (is_subword_type(bt)) bt = T_INT; 127 switch (bt) { 128 case T_OBJECT: return constantTag(JVM_CONSTANT_String); 129 case T_INT: return constantTag(JVM_CONSTANT_Integer); 130 case T_LONG: return constantTag(JVM_CONSTANT_Long); 131 case T_FLOAT: return constantTag(JVM_CONSTANT_Float); 132 case T_DOUBLE: return constantTag(JVM_CONSTANT_Double); 133 default: break; 134 } 135 assert(false, "bad basic type for tag"); 136 return constantTag(); 137 } 138 139 jbyte value() const { return _tag; } 140 jbyte error_value() const; 141 jbyte non_error_value() const; 142 143 BasicType basic_type() const; // if used with ldc, what kind of value gets pushed? 144 145 const char* internal_name() const; // for error reporting 146 147 void print_on(outputStream* st) const PRODUCT_RETURN; 148 }; 149 150 #endif // SHARE_UTILITIES_CONSTANTTAG_HPP | 23 */ 24 25 #ifndef SHARE_UTILITIES_CONSTANTTAG_HPP 26 #define SHARE_UTILITIES_CONSTANTTAG_HPP 27 28 #include "jvm.h" 29 #include "utilities/globalDefinitions.hpp" 30 31 32 class outputStream; 33 34 // constant tags in Java .class files 35 36 enum { 37 // See jvm.h for shared JVM_CONSTANT_XXX tags 38 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java 39 // Hotspot specific tags 40 JVM_CONSTANT_Invalid = 0, // For bad value initialization 41 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) 42 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use 43 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool, class redefinition 44 JVM_CONSTANT_StringIndex = 102, // Temporary tag while constructing constant pool, class redefinition 45 JVM_CONSTANT_UnresolvedClassInError = 103, // Error tag due to resolution error 46 JVM_CONSTANT_MethodHandleInError = 104, // Error tag due to resolution error 47 JVM_CONSTANT_MethodTypeInError = 105, // Error tag due to resolution error 48 JVM_CONSTANT_DynamicInError = 106, // Error tag due to resolution error 49 JVM_CONSTANT_InternalMax = 106 // Last implementation tag 50 }; 51 52 #define JVM_CONSTANT_QDESC_BIT (1 << 7) 53 54 class constantTag { 55 private: 56 jbyte _tag; 57 public: 58 bool is_klass() const { return value() == JVM_CONSTANT_Class; } 59 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } 60 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } 61 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } 62 bool is_string() const { return _tag == JVM_CONSTANT_String; } 63 bool is_int() const { return _tag == JVM_CONSTANT_Integer; } 64 bool is_float() const { return _tag == JVM_CONSTANT_Float; } 65 bool is_long() const { return _tag == JVM_CONSTANT_Long; } 66 bool is_double() const { return _tag == JVM_CONSTANT_Double; } 67 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } 68 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } 69 70 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } 71 72 bool is_unresolved_klass() const { 73 return value() == JVM_CONSTANT_UnresolvedClass || value() == JVM_CONSTANT_UnresolvedClassInError; 74 } 75 76 bool is_unresolved_klass_in_error() const { 77 return value() == JVM_CONSTANT_UnresolvedClassInError; 78 } 79 80 bool is_Qdescriptor_klass() const { 81 return (_tag & JVM_CONSTANT_QDESC_BIT) != 0; 82 } 83 84 bool is_method_handle_in_error() const { 85 return _tag == JVM_CONSTANT_MethodHandleInError; 86 } 87 bool is_method_type_in_error() const { 88 return _tag == JVM_CONSTANT_MethodTypeInError; 89 } 90 91 bool is_dynamic_constant_in_error() const { 92 return _tag == JVM_CONSTANT_DynamicInError; 93 } 94 95 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } 96 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } 97 98 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } 99 bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); } 100 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } 101 bool is_symbol() const { return is_utf8(); } 104 bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; } 105 bool is_dynamic_constant() const { return _tag == JVM_CONSTANT_Dynamic; } 106 bool is_invoke_dynamic() const { return _tag == JVM_CONSTANT_InvokeDynamic; } 107 108 bool has_bootstrap() const { 109 return (_tag == JVM_CONSTANT_Dynamic || 110 _tag == JVM_CONSTANT_DynamicInError || 111 _tag == JVM_CONSTANT_InvokeDynamic); 112 } 113 114 bool is_loadable_constant() const { 115 return ((_tag >= JVM_CONSTANT_Integer && _tag <= JVM_CONSTANT_String) || 116 is_method_type() || is_method_handle() || is_dynamic_constant() || 117 is_unresolved_klass()); 118 } 119 120 constantTag() { 121 _tag = JVM_CONSTANT_Invalid; 122 } 123 constantTag(jbyte tag) { 124 jbyte entry_tag = tag & ~JVM_CONSTANT_QDESC_BIT; 125 assert((((tag & JVM_CONSTANT_QDESC_BIT) == 0) && (entry_tag >= 0 && entry_tag <= JVM_CONSTANT_NameAndType) || 126 (entry_tag >= JVM_CONSTANT_MethodHandle && entry_tag <= JVM_CONSTANT_InvokeDynamic) || 127 (entry_tag >= JVM_CONSTANT_InternalMin && entry_tag <= JVM_CONSTANT_InternalMax)) 128 || (((tag & JVM_CONSTANT_QDESC_BIT) != 0) && (entry_tag == JVM_CONSTANT_Class || 129 entry_tag == JVM_CONSTANT_UnresolvedClass || entry_tag == JVM_CONSTANT_UnresolvedClassInError 130 || entry_tag == JVM_CONSTANT_ClassIndex)) 131 , "Invalid constant tag"); 132 _tag = tag; 133 } 134 135 static constantTag ofBasicType(BasicType bt) { 136 if (is_subword_type(bt)) bt = T_INT; 137 switch (bt) { 138 case T_OBJECT: return constantTag(JVM_CONSTANT_String); 139 case T_INT: return constantTag(JVM_CONSTANT_Integer); 140 case T_LONG: return constantTag(JVM_CONSTANT_Long); 141 case T_FLOAT: return constantTag(JVM_CONSTANT_Float); 142 case T_DOUBLE: return constantTag(JVM_CONSTANT_Double); 143 default: break; 144 } 145 assert(false, "bad basic type for tag"); 146 return constantTag(); 147 } 148 149 jbyte value() const { return _tag & ~JVM_CONSTANT_QDESC_BIT; } 150 jbyte tag() const { return _tag; } 151 jbyte error_value() const; 152 jbyte non_error_value() const; 153 154 BasicType basic_type() const; // if used with ldc, what kind of value gets pushed? 155 156 const char* internal_name() const; // for error reporting 157 158 void print_on(outputStream* st) const PRODUCT_RETURN; 159 }; 160 161 #endif // SHARE_UTILITIES_CONSTANTTAG_HPP |