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src/cpu/ppc/vm/icBuffer_ppc.cpp@04ff2f6cd0eb (annotated)

src/cpu/ppc/vm/icBuffer_ppc.cpp

Tue, 17 Oct 2017 12:58:25 +0800

author

aoqi

date

Tue, 17 Oct 2017 12:58:25 +0800

changeset 7994

04ff2f6cd0eb

parent 0

f90c822e73f8

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* Copyright 2012, 2013 SAP AG. All rights reserved.
aoqi@0	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	5	*
aoqi@0	6	* This code is free software; you can redistribute it and/or modify it
aoqi@0	7	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	8	* published by the Free Software Foundation.
aoqi@0	9	*
aoqi@0	10	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	13	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	14	* accompanied this code).
aoqi@0	15	*
aoqi@0	16	* You should have received a copy of the GNU General Public License version
aoqi@0	17	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	19	*
aoqi@0	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	21	* or visit www.oracle.com if you need additional information or have any
aoqi@0	22	* questions.
aoqi@0	23	*
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	#include "precompiled.hpp"
aoqi@0	27	#include "asm/assembler.hpp"
aoqi@0	28	#include "assembler_ppc.inline.hpp"
aoqi@0	29	#include "code/icBuffer.hpp"
aoqi@0	30	#include "gc_interface/collectedHeap.inline.hpp"
aoqi@0	31	#include "interpreter/bytecodes.hpp"
aoqi@0	32	#include "memory/resourceArea.hpp"
aoqi@0	33	#include "nativeInst_ppc.hpp"
aoqi@0	34	#include "oops/oop.inline.hpp"
aoqi@0	35	#include "oops/oop.inline2.hpp"
aoqi@0	36
aoqi@0	37	#define __ masm.
aoqi@0	38
aoqi@0	39	int InlineCacheBuffer::ic_stub_code_size() {
aoqi@0	40	return MacroAssembler::load_const_size + MacroAssembler::b64_patchable_size;
aoqi@0	41	}
aoqi@0	42
aoqi@0	43	void InlineCacheBuffer::assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point) {
aoqi@0	44	ResourceMark rm;
aoqi@0	45	CodeBuffer code(code_begin, ic_stub_code_size());
aoqi@0	46	MacroAssembler masm(&code);
aoqi@0	47	// Note: even though the code contains an embedded metadata, we do not need reloc info
aoqi@0	48	// because
aoqi@0	49	// (1) the metadata is old (i.e., doesn't matter for scavenges)
aoqi@0	50	// (2) these ICStubs are removed *before* a GC happens, so the roots disappear.
aoqi@0	51
aoqi@0	52	// Load the oop ...
aoqi@0	53	__ load_const(R19_method, (address) cached_value, R0);
aoqi@0	54	// ... and jump to entry point.
aoqi@0	55	__ b64_patchable((address) entry_point, relocInfo::none);
aoqi@0	56
aoqi@0	57	__ flush();
aoqi@0	58	}
aoqi@0	59
aoqi@0	60	address InlineCacheBuffer::ic_buffer_entry_point(address code_begin) {
aoqi@0	61	NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object
aoqi@0	62	NativeJump* jump = nativeJump_at(move->next_instruction_address());
aoqi@0	63	return jump->jump_destination();
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	void* InlineCacheBuffer::ic_buffer_cached_value(address code_begin) {
aoqi@0	67	NativeMovConstReg* move = nativeMovConstReg_at(code_begin); // creation also verifies the object
aoqi@0	68	void* o = (void*)move->data();
aoqi@0	69	return o;
aoqi@0	70	}
aoqi@0	71