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comparison src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 11080:b800986664f4

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7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 Summary: add intrinsics using new instruction to interpreter, C1, C2, for suitable x86; add test Reviewed-by: kvn, twisti
author drchase
date Tue, 02 Jul 2013 20:42:12 -0400
parents ef57c43512d6
children 980532a806a5 0f57ccdb9084
comparison
equal deleted inserted replaced
11079:738e04fb1232 11080:b800986664f4
1 /* 1 /*
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
3582 __ jmp(L_exit); 3582 __ jmp(L_exit);
3583 3583
3584 return start; 3584 return start;
3585 } 3585 }
3586 3586
3587 3587 /**
3588 * Arguments:
3589 *
3590 * Inputs:
3591 * c_rarg0 - int crc
3592 * c_rarg1 - byte* buf
3593 * c_rarg2 - int length
3594 *
3595 * Ouput:
3596 * rax - int crc result
3597 */
3598 address generate_updateBytesCRC32() {
3599 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions");
3600
3601 __ align(CodeEntryAlignment);
3602 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32");
3603
3604 address start = __ pc();
3605 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
3606 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
3607 // rscratch1: r10
3608 const Register crc = c_rarg0; // crc
3609 const Register buf = c_rarg1; // source java byte array address
3610 const Register len = c_rarg2; // length
3611 const Register table = c_rarg3; // crc_table address (reuse register)
3612 const Register tmp = r11;
3613 assert_different_registers(crc, buf, len, table, tmp, rax);
3614
3615 BLOCK_COMMENT("Entry:");
3616 __ enter(); // required for proper stackwalking of RuntimeStub frame
3617
3618 __ kernel_crc32(crc, buf, len, table, tmp);
3619
3620 __ movl(rax, crc);
3621 __ leave(); // required for proper stackwalking of RuntimeStub frame
3622 __ ret(0);
3623
3624 return start;
3625 }
3588 3626
3589 #undef __ 3627 #undef __
3590 #define __ masm-> 3628 #define __ masm->
3591 3629
3592 // Continuation point for throwing of implicit exceptions that are 3630 // Continuation point for throwing of implicit exceptions that are
3734 StubRoutines::_throw_StackOverflowError_entry = 3772 StubRoutines::_throw_StackOverflowError_entry =
3735 generate_throw_exception("StackOverflowError throw_exception", 3773 generate_throw_exception("StackOverflowError throw_exception",
3736 CAST_FROM_FN_PTR(address, 3774 CAST_FROM_FN_PTR(address,
3737 SharedRuntime:: 3775 SharedRuntime::
3738 throw_StackOverflowError)); 3776 throw_StackOverflowError));
3777 if (UseCRC32Intrinsics) {
3778 // set table address before stub generation which use it
3779 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table;
3780 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
3781 }
3739 } 3782 }
3740 3783
3741 void generate_all() { 3784 void generate_all() {
3742 // Generates all stubs and initializes the entry points 3785 // Generates all stubs and initializes the entry points
3743 3786