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Line 30... |
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namespace gold {
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namespace gold {
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// Read an unsigned LEB128 number. Each byte contains 7 bits of
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// Read an unsigned LEB128 number. Each byte contains 7 bits of
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// information, plus one bit saying whether the number continues or
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// information, plus one bit saying whether the number continues or
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// not.
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// not. BYTE contains the first byte of the number, and is guaranteed
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// to have the continuation bit set.
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uint64_t
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uint64_t
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read_unsigned_LEB_128(const unsigned char* buffer, size_t* len)
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read_unsigned_LEB_128_x(const unsigned char* buffer, size_t* len,
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unsigned char byte)
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{
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{
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uint64_t result = 0;
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uint64_t result = static_cast<uint64_t>(byte & 0x7f);
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size_t num_read = 0;
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size_t num_read = 1;
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unsigned int shift = 0;
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unsigned int shift = 7;
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unsigned char byte;
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do
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do
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{
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{
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if (num_read >= 64 / 7)
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if (num_read > 64 / 7 + 1)
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{
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{
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gold_warning(_("Unusually large LEB128 decoded, "
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gold_warning(_("Unusually large LEB128 decoded, "
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"debug information may be corrupted"));
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"debug information may be corrupted"));
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break;
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break;
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}
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}
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Line 63... |
return result;
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return result;
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}
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}
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// Read a signed LEB128 number. These are like regular LEB128
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// Read a signed LEB128 number. These are like regular LEB128
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// numbers, except the last byte may have a sign bit set.
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// numbers, except the last byte may have a sign bit set.
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// BYTE contains the first byte of the number, and is guaranteed
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// to have the continuation bit set.
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int64_t
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int64_t
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read_signed_LEB_128(const unsigned char* buffer, size_t* len)
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read_signed_LEB_128_x(const unsigned char* buffer, size_t* len,
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unsigned char byte)
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{
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{
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int64_t result = 0;
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int64_t result = static_cast<uint64_t>(byte & 0x7f);
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int shift = 0;
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int shift = 7;
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size_t num_read = 0;
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size_t num_read = 1;
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unsigned char byte;
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do
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do
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{
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{
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if (num_read >= 64 / 7)
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if (num_read > 64 / 7 + 1)
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{
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{
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gold_warning(_("Unusually large LEB128 decoded, "
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gold_warning(_("Unusually large LEB128 decoded, "
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"debug information may be corrupted"));
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"debug information may be corrupted"));
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break;
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break;
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}
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}
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