author | pliden |
Tue, 12 Jun 2018 17:40:28 +0200 | |
changeset 50525 | 767cdb97f103 |
child 51505 | 3ccdf4887a4b |
permissions | -rw-r--r-- |
50525
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/* |
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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#include "precompiled.hpp" |
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#include "asm/macroAssembler.inline.hpp" |
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#include "gc/z/zBarrier.inline.hpp" |
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#include "gc/z/zBarrierSet.hpp" |
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#include "gc/z/zBarrierSetAssembler.hpp" |
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#include "gc/z/zBarrierSetRuntime.hpp" |
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#include "runtime/stubCodeGenerator.hpp" |
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#include "utilities/macros.hpp" |
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#ifdef COMPILER1 |
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#include "c1/c1_LIRAssembler.hpp" |
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#include "c1/c1_MacroAssembler.hpp" |
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#include "gc/z/c1/zBarrierSetC1.hpp" |
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#endif // COMPILER1 |
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#undef __ |
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#define __ masm-> |
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#ifdef PRODUCT |
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#define BLOCK_COMMENT(str) /* nothing */ |
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#else |
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#define BLOCK_COMMENT(str) __ block_comment(str) |
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#endif |
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|
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static void call_vm(MacroAssembler* masm, |
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address entry_point, |
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Register arg0, |
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Register arg1) { |
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// Setup arguments |
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if (arg1 == c_rarg0) { |
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if (arg0 == c_rarg1) { |
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__ xchgptr(c_rarg1, c_rarg0); |
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} else { |
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__ movptr(c_rarg1, arg1); |
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__ movptr(c_rarg0, arg0); |
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} |
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} else { |
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if (arg0 != c_rarg0) { |
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__ movptr(c_rarg0, arg0); |
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} |
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if (arg1 != c_rarg1) { |
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__ movptr(c_rarg1, arg1); |
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} |
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} |
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// Call VM |
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__ MacroAssembler::call_VM_leaf_base(entry_point, 2); |
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} |
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void ZBarrierSetAssembler::load_at(MacroAssembler* masm, |
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DecoratorSet decorators, |
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BasicType type, |
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Register dst, |
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Address src, |
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Register tmp1, |
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Register tmp_thread) { |
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if (!ZBarrierSet::barrier_needed(decorators, type)) { |
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// Barrier not needed |
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BarrierSetAssembler::load_at(masm, decorators, type, dst, src, tmp1, tmp_thread); |
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return; |
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} |
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BLOCK_COMMENT("ZBarrierSetAssembler::load_at {"); |
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// Allocate scratch register |
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Register scratch = tmp1; |
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if (tmp1 == noreg) { |
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scratch = r12; |
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__ push(scratch); |
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} |
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assert_different_registers(dst, scratch); |
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Label done; |
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// |
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// Fast Path |
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// |
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// Load address |
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__ lea(scratch, src); |
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// Load oop at address |
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__ movptr(dst, Address(scratch, 0)); |
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// Test address bad mask |
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__ testptr(dst, address_bad_mask_from_thread(r15_thread)); |
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__ jcc(Assembler::zero, done); |
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// |
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// Slow path |
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// |
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// Save registers |
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__ push(rax); |
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__ push(rcx); |
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__ push(rdx); |
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__ push(rdi); |
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__ push(rsi); |
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__ push(r8); |
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__ push(r9); |
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__ push(r10); |
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__ push(r11); |
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|
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// We may end up here from generate_native_wrapper, then the method may have |
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// floats as arguments, and we must spill them before calling the VM runtime |
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// leaf. From the interpreter all floats are passed on the stack. |
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assert(Argument::n_float_register_parameters_j == 8, "Assumption"); |
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const int xmm_size = wordSize * 2; |
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const int xmm_spill_size = xmm_size * Argument::n_float_register_parameters_j; |
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__ subptr(rsp, xmm_spill_size); |
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__ movdqu(Address(rsp, xmm_size * 7), xmm7); |
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__ movdqu(Address(rsp, xmm_size * 6), xmm6); |
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__ movdqu(Address(rsp, xmm_size * 5), xmm5); |
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__ movdqu(Address(rsp, xmm_size * 4), xmm4); |
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__ movdqu(Address(rsp, xmm_size * 3), xmm3); |
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__ movdqu(Address(rsp, xmm_size * 2), xmm2); |
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__ movdqu(Address(rsp, xmm_size * 1), xmm1); |
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__ movdqu(Address(rsp, xmm_size * 0), xmm0); |
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|
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// Call VM |
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call_vm(masm, ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr(decorators), dst, scratch); |
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145 |
|
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// Restore registers |
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__ movdqu(xmm0, Address(rsp, xmm_size * 0)); |
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__ movdqu(xmm1, Address(rsp, xmm_size * 1)); |
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__ movdqu(xmm2, Address(rsp, xmm_size * 2)); |
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__ movdqu(xmm3, Address(rsp, xmm_size * 3)); |
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__ movdqu(xmm4, Address(rsp, xmm_size * 4)); |
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__ movdqu(xmm5, Address(rsp, xmm_size * 5)); |
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__ movdqu(xmm6, Address(rsp, xmm_size * 6)); |
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__ movdqu(xmm7, Address(rsp, xmm_size * 7)); |
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__ addptr(rsp, xmm_spill_size); |
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156 |
|
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__ pop(r11); |
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__ pop(r10); |
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__ pop(r9); |
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__ pop(r8); |
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__ pop(rsi); |
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__ pop(rdi); |
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__ pop(rdx); |
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__ pop(rcx); |
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165 |
|
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if (dst == rax) { |
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__ addptr(rsp, wordSize); |
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} else { |
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__ movptr(dst, rax); |
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__ pop(rax); |
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} |
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172 |
|
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__ bind(done); |
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174 |
|
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// Restore scratch register |
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if (tmp1 == noreg) { |
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__ pop(scratch); |
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} |
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|
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BLOCK_COMMENT("} ZBarrierSetAssembler::load_at"); |
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} |
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|
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183 |
#ifdef ASSERT |
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|
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void ZBarrierSetAssembler::store_at(MacroAssembler* masm, |
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DecoratorSet decorators, |
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BasicType type, |
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Address dst, |
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189 |
Register src, |
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Register tmp1, |
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Register tmp2) { |
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BLOCK_COMMENT("ZBarrierSetAssembler::store_at {"); |
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193 |
|
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// Verify oop store |
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if (type == T_OBJECT || type == T_ARRAY) { |
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// Note that src could be noreg, which means we |
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// are storing null and can skip verification. |
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if (src != noreg) { |
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Label done; |
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__ testptr(src, address_bad_mask_from_thread(r15_thread)); |
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__ jcc(Assembler::zero, done); |
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__ stop("Verify oop store failed"); |
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__ should_not_reach_here(); |
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__ bind(done); |
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205 |
} |
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206 |
} |
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207 |
|
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208 |
// Store value |
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BarrierSetAssembler::store_at(masm, decorators, type, dst, src, tmp1, tmp2); |
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210 |
|
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BLOCK_COMMENT("} ZBarrierSetAssembler::store_at"); |
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} |
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213 |
|
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#endif // ASSERT |
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|
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void ZBarrierSetAssembler::arraycopy_prologue(MacroAssembler* masm, |
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DecoratorSet decorators, |
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BasicType type, |
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219 |
Register src, |
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220 |
Register dst, |
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Register count) { |
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if (!ZBarrierSet::barrier_needed(decorators, type)) { |
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// Barrier not needed |
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return; |
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225 |
} |
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226 |
|
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BLOCK_COMMENT("ZBarrierSetAssembler::arraycopy_prologue {"); |
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228 |
|
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229 |
// Save registers |
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__ pusha(); |
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231 |
|
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// Call VM |
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call_vm(masm, ZBarrierSetRuntime::load_barrier_on_oop_array_addr(), src, count); |
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|
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// Restore registers |
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__ popa(); |
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|
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BLOCK_COMMENT("} ZBarrierSetAssembler::arraycopy_prologue"); |
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} |
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|
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void ZBarrierSetAssembler::try_resolve_jobject_in_native(MacroAssembler* masm, |
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Register jni_env, |
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Register obj, |
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Register tmp, |
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Label& slowpath) { |
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BLOCK_COMMENT("ZBarrierSetAssembler::try_resolve_jobject_in_native {"); |
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|
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// Resolve jobject |
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BarrierSetAssembler::try_resolve_jobject_in_native(masm, jni_env, obj, tmp, slowpath); |
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|
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// Test address bad mask |
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__ testptr(obj, address_bad_mask_from_jni_env(jni_env)); |
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__ jcc(Assembler::notZero, slowpath); |
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|
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BLOCK_COMMENT("} ZBarrierSetAssembler::try_resolve_jobject_in_native"); |
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} |
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|
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#ifdef COMPILER1 |
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|
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#undef __ |
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#define __ ce->masm()-> |
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|
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void ZBarrierSetAssembler::generate_c1_load_barrier_test(LIR_Assembler* ce, |
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LIR_Opr ref) const { |
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__ testptr(ref->as_register(), address_bad_mask_from_thread(r15_thread)); |
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} |
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|
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void ZBarrierSetAssembler::generate_c1_load_barrier_stub(LIR_Assembler* ce, |
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ZLoadBarrierStubC1* stub) const { |
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// Stub entry |
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__ bind(*stub->entry()); |
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|
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Register ref = stub->ref()->as_register(); |
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Register ref_addr = noreg; |
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|
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if (stub->ref_addr()->is_register()) { |
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// Address already in register |
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ref_addr = stub->ref_addr()->as_pointer_register(); |
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} else { |
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// Load address into tmp register |
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ce->leal(stub->ref_addr(), stub->tmp(), stub->patch_code(), stub->patch_info()); |
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ref_addr = stub->tmp()->as_pointer_register(); |
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} |
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|
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assert_different_registers(ref, ref_addr, noreg); |
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|
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// Save rax unless it is the result register |
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if (ref != rax) { |
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__ push(rax); |
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} |
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|
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// Setup arguments and call runtime stub |
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__ subptr(rsp, 2 * BytesPerWord); |
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ce->store_parameter(ref_addr, 1); |
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ce->store_parameter(ref, 0); |
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__ call(RuntimeAddress(stub->runtime_stub())); |
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__ addptr(rsp, 2 * BytesPerWord); |
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|
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// Verify result |
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__ verify_oop(rax, "Bad oop"); |
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|
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// Restore rax unless it is the result register |
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if (ref != rax) { |
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__ movptr(ref, rax); |
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__ pop(rax); |
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} |
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|
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// Stub exit |
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__ jmp(*stub->continuation()); |
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} |
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|
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#undef __ |
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#define __ sasm-> |
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|
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void ZBarrierSetAssembler::generate_c1_load_barrier_runtime_stub(StubAssembler* sasm, |
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DecoratorSet decorators) const { |
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// Enter and save registers |
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__ enter(); |
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__ save_live_registers_no_oop_map(true /* save_fpu_registers */); |
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|
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// Setup arguments |
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__ load_parameter(1, c_rarg1); |
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__ load_parameter(0, c_rarg0); |
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|
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// Call VM |
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__ call_VM_leaf(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr(decorators), c_rarg0, c_rarg1); |
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|
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// Restore registers and return |
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__ restore_live_registers_except_rax(true /* restore_fpu_registers */); |
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__ leave(); |
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__ ret(0); |
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} |
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333 |
|
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334 |
#endif // COMPILER1 |
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|
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#undef __ |
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#define __ cgen->assembler()-> |
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|
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// Generates a register specific stub for calling |
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// ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded() or |
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// ZBarrierSetRuntime::load_barrier_on_weak_oop_field_preloaded(). |
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// |
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// The raddr register serves as both input and output for this stub. When the stub is |
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// called the raddr register contains the object field address (oop*) where the bad oop |
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// was loaded from, which caused the slow path to be taken. On return from the stub the |
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// raddr register contains the good/healed oop returned from |
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347 |
// ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded() or |
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348 |
// ZBarrierSetRuntime::load_barrier_on_weak_oop_field_preloaded(). |
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349 |
static address generate_load_barrier_stub(StubCodeGenerator* cgen, Register raddr, DecoratorSet decorators) { |
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350 |
// Don't generate stub for invalid registers |
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351 |
if (raddr == rsp || raddr == r12 || raddr == r15) { |
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352 |
return NULL; |
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353 |
} |
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|
354 |
|
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355 |
// Create stub name |
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356 |
char name[64]; |
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357 |
const bool weak = (decorators & ON_WEAK_OOP_REF) != 0; |
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358 |
os::snprintf(name, sizeof(name), "load_barrier%s_stub_%s", weak ? "_weak" : "", raddr->name()); |
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|
359 |
|
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|
360 |
__ align(CodeEntryAlignment); |
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361 |
StubCodeMark mark(cgen, "StubRoutines", os::strdup(name, mtCode)); |
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362 |
address start = __ pc(); |
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|
363 |
|
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|
364 |
// Save live registers |
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|
365 |
if (raddr != rax) { |
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366 |
__ push(rax); |
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|
367 |
} |
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|
368 |
if (raddr != rcx) { |
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|
369 |
__ push(rcx); |
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|
370 |
} |
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|
371 |
if (raddr != rdx) { |
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372 |
__ push(rdx); |
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|
373 |
} |
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|
374 |
if (raddr != rsi) { |
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|
375 |
__ push(rsi); |
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|
376 |
} |
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|
377 |
if (raddr != rdi) { |
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|
378 |
__ push(rdi); |
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|
379 |
} |
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|
380 |
if (raddr != r8) { |
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|
381 |
__ push(r8); |
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|
382 |
} |
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|
383 |
if (raddr != r9) { |
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|
384 |
__ push(r9); |
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|
385 |
} |
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|
386 |
if (raddr != r10) { |
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|
387 |
__ push(r10); |
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|
388 |
} |
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|
389 |
if (raddr != r11) { |
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|
390 |
__ push(r11); |
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|
391 |
} |
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|
392 |
|
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|
393 |
// Setup arguments |
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|
394 |
if (c_rarg1 != raddr) { |
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|
395 |
__ movq(c_rarg1, raddr); |
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|
396 |
} |
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|
397 |
__ movq(c_rarg0, Address(raddr, 0)); |
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|
398 |
|
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|
399 |
// Call barrier function |
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|
400 |
__ call_VM_leaf(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr(decorators), c_rarg0, c_rarg1); |
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|
401 |
|
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|
402 |
// Move result returned in rax to raddr, if needed |
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|
403 |
if (raddr != rax) { |
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|
404 |
__ movq(raddr, rax); |
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|
405 |
} |
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|
406 |
|
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|
407 |
// Restore saved registers |
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|
408 |
if (raddr != r11) { |
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|
409 |
__ pop(r11); |
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|
410 |
} |
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|
411 |
if (raddr != r10) { |
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|
412 |
__ pop(r10); |
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|
413 |
} |
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|
414 |
if (raddr != r9) { |
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|
415 |
__ pop(r9); |
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|
416 |
} |
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|
417 |
if (raddr != r8) { |
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|
418 |
__ pop(r8); |
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|
419 |
} |
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|
420 |
if (raddr != rdi) { |
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|
421 |
__ pop(rdi); |
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|
422 |
} |
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|
423 |
if (raddr != rsi) { |
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|
424 |
__ pop(rsi); |
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|
425 |
} |
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|
426 |
if (raddr != rdx) { |
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|
427 |
__ pop(rdx); |
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|
428 |
} |
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|
429 |
if (raddr != rcx) { |
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|
430 |
__ pop(rcx); |
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|
431 |
} |
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|
432 |
if (raddr != rax) { |
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|
433 |
__ pop(rax); |
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|
434 |
} |
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|
435 |
|
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|
436 |
__ ret(0); |
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|
437 |
|
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|
438 |
return start; |
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|
439 |
} |
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|
440 |
|
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|
441 |
#undef __ |
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|
442 |
|
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|
443 |
void ZBarrierSetAssembler::barrier_stubs_init() { |
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|
444 |
// Load barrier stubs |
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|
445 |
int stub_code_size = 256 * 16; // Rough estimate of code size |
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|
446 |
|
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|
447 |
ResourceMark rm; |
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|
448 |
BufferBlob* bb = BufferBlob::create("zgc_load_barrier_stubs", stub_code_size); |
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|
449 |
CodeBuffer buf(bb); |
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|
450 |
StubCodeGenerator cgen(&buf); |
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|
451 |
|
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|
452 |
Register rr = as_Register(0); |
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|
453 |
for (int i = 0; i < RegisterImpl::number_of_registers; i++) { |
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|
454 |
_load_barrier_slow_stub[i] = generate_load_barrier_stub(&cgen, rr, ON_STRONG_OOP_REF); |
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|
455 |
_load_barrier_weak_slow_stub[i] = generate_load_barrier_stub(&cgen, rr, ON_WEAK_OOP_REF); |
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|
456 |
rr = rr->successor(); |
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|
457 |
} |
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|
458 |
} |