28 #include "classfile/dictionary.hpp" |
28 #include "classfile/dictionary.hpp" |
29 #include "classfile/vmSymbols.hpp" |
29 #include "classfile/vmSymbols.hpp" |
30 #include "memory/resourceArea.hpp" |
30 #include "memory/resourceArea.hpp" |
31 |
31 |
32 const bool ClassFileStream::verify = true; |
32 const bool ClassFileStream::verify = true; |
33 const bool ClassFileStream::no_verification = false; |
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34 |
33 |
35 void ClassFileStream::truncated_file_error(TRAPS) const { |
34 void ClassFileStream::truncated_file_error(TRAPS) const { |
36 THROW_MSG(vmSymbols::java_lang_ClassFormatError(), "Truncated class file"); |
35 THROW_MSG(vmSymbols::java_lang_ClassFormatError(), "Truncated class file"); |
37 } |
36 } |
38 |
37 |
71 length(), |
70 length(), |
72 clone_source(), |
71 clone_source(), |
73 need_verify()); |
72 need_verify()); |
74 } |
73 } |
75 |
74 |
76 u1 ClassFileStream::get_u1(TRAPS) const { |
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77 if (_need_verify) { |
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78 guarantee_more(1, CHECK_0); |
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79 } else { |
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80 assert(1 <= _buffer_end - _current, "buffer overflow"); |
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81 } |
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82 return *_current++; |
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83 } |
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84 |
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85 u2 ClassFileStream::get_u2(TRAPS) const { |
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86 if (_need_verify) { |
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87 guarantee_more(2, CHECK_0); |
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88 } else { |
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89 assert(2 <= _buffer_end - _current, "buffer overflow"); |
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90 } |
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91 const u1* tmp = _current; |
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92 _current += 2; |
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93 return Bytes::get_Java_u2((address)tmp); |
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94 } |
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95 |
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96 u4 ClassFileStream::get_u4(TRAPS) const { |
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97 if (_need_verify) { |
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98 guarantee_more(4, CHECK_0); |
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99 } else { |
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100 assert(4 <= _buffer_end - _current, "buffer overflow"); |
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101 } |
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102 const u1* tmp = _current; |
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103 _current += 4; |
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104 return Bytes::get_Java_u4((address)tmp); |
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105 } |
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106 |
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107 u8 ClassFileStream::get_u8(TRAPS) const { |
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108 if (_need_verify) { |
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109 guarantee_more(8, CHECK_0); |
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110 } else { |
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111 assert(8 <= _buffer_end - _current, "buffer overflow"); |
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112 } |
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113 const u1* tmp = _current; |
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114 _current += 8; |
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115 return Bytes::get_Java_u8((address)tmp); |
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116 } |
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117 |
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118 void ClassFileStream::skip_u1(int length, TRAPS) const { |
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119 if (_need_verify) { |
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120 guarantee_more(length, CHECK); |
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121 } |
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122 _current += length; |
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123 } |
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124 |
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125 void ClassFileStream::skip_u2(int length, TRAPS) const { |
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126 if (_need_verify) { |
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127 guarantee_more(length * 2, CHECK); |
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128 } |
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129 _current += length * 2; |
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130 } |
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131 |
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132 void ClassFileStream::skip_u4(int length, TRAPS) const { |
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133 if (_need_verify) { |
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134 guarantee_more(length * 4, CHECK); |
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135 } |
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136 _current += length * 4; |
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137 } |
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138 |
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139 uint64_t ClassFileStream::compute_fingerprint() const { |
75 uint64_t ClassFileStream::compute_fingerprint() const { |
140 int classfile_size = length(); |
76 int classfile_size = length(); |
141 int classfile_crc = ClassLoader::crc32(0, (const char*)buffer(), length()); |
77 int classfile_crc = ClassLoader::crc32(0, (const char*)buffer(), length()); |
142 uint64_t fingerprint = (uint64_t(classfile_size) << 32) | uint64_t(uint32_t(classfile_crc)); |
78 uint64_t fingerprint = (uint64_t(classfile_size) << 32) | uint64_t(uint32_t(classfile_crc)); |
143 assert(fingerprint != 0, "must not be zero"); |
79 assert(fingerprint != 0, "must not be zero"); |