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comparison src/cpu/x86/vm/templateInterpreter_x86_64.cpp @ 11230:5c153c59ba62

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fixed bug in java.util.zip.CRC32.updateBytes interpreter entry stub
author Doug Simon <doug.simon@oracle.com>
date Tue, 06 Aug 2013 21:40:09 +0200
parents e28663a9f5ef
children 84589a49d184
comparison
equal deleted inserted replaced
11229:78da293f6efa 11230:5c153c59ba62
993 993
994 // Load parameters 994 // Load parameters
995 const Register crc = c_rarg0; // crc 995 const Register crc = c_rarg0; // crc
996 const Register buf = c_rarg1; // source java byte array address 996 const Register buf = c_rarg1; // source java byte array address
997 const Register len = c_rarg2; // length 997 const Register len = c_rarg2; // length
998 const Register off = len; // offset (never overlaps with 'len')
998 999
999 // Arguments are reversed on java expression stack 1000 // Arguments are reversed on java expression stack
1000 __ movl(len, Address(rsp, wordSize)); // Length
1001 // Calculate address of start element 1001 // Calculate address of start element
1002 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { 1002 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
1003 __ movptr(buf, Address(rsp, 3*wordSize)); // long buf 1003 __ movptr(buf, Address(rsp, 3*wordSize)); // long buf
1004 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset 1004 __ movl(len, Address(rsp, 2*wordSize)); // offset
1005 __ addq(buf, len); // + offset
1005 __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC 1006 __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC
1006 } else { 1007 } else {
1007 __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array 1008 __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array
1008 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size 1009 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
1009 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset 1010 __ movl(len, Address(rsp, 2*wordSize)); // offset
1011 __ addq(buf, len); // + offset
1010 __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC 1012 __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC
1011 } 1013 }
1014 // Can now load 'len' since we're finished with 'off'
1015 __ movl(len, Address(rsp, wordSize)); // Length
1012 1016
1013 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len); 1017 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len);
1014 // result in rax 1018 // result in rax
1015 1019
1016 // _areturn 1020 // _areturn