• file
• revisions
• annotate
• diff
• comparison
• raw

src/cpu/sparc/vm/relocInfo_sparc.cpp@f90c822e73f8 (annotated)

src/cpu/sparc/vm/relocInfo_sparc.cpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "asm/assembler.hpp"
aoqi@0	27	#include "code/relocInfo.hpp"
aoqi@0	28	#include "nativeInst_sparc.hpp"
aoqi@0	29	#include "oops/oop.inline.hpp"
aoqi@0	30	#include "runtime/safepoint.hpp"
aoqi@0	31
aoqi@0	32	void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {
aoqi@0	33	NativeInstruction* ip = nativeInstruction_at(addr());
aoqi@0	34	jint inst = ip->long_at(0);
aoqi@0	35	assert(inst != NativeInstruction::illegal_instruction(), "no breakpoint");
aoqi@0	36	switch (Assembler::inv_op(inst)) {
aoqi@0	37
aoqi@0	38	case Assembler::ldst_op:
aoqi@0	39	#ifdef ASSERT
aoqi@0	40	switch (Assembler::inv_op3(inst)) {
aoqi@0	41	case Assembler::lduw_op3:
aoqi@0	42	case Assembler::ldub_op3:
aoqi@0	43	case Assembler::lduh_op3:
aoqi@0	44	case Assembler::ldd_op3:
aoqi@0	45	case Assembler::ldsw_op3:
aoqi@0	46	case Assembler::ldsb_op3:
aoqi@0	47	case Assembler::ldsh_op3:
aoqi@0	48	case Assembler::ldx_op3:
aoqi@0	49	case Assembler::ldf_op3:
aoqi@0	50	case Assembler::lddf_op3:
aoqi@0	51	case Assembler::stw_op3:
aoqi@0	52	case Assembler::stb_op3:
aoqi@0	53	case Assembler::sth_op3:
aoqi@0	54	case Assembler::std_op3:
aoqi@0	55	case Assembler::stx_op3:
aoqi@0	56	case Assembler::stf_op3:
aoqi@0	57	case Assembler::stdf_op3:
aoqi@0	58	case Assembler::casa_op3:
aoqi@0	59	case Assembler::casxa_op3:
aoqi@0	60	break;
aoqi@0	61	default:
aoqi@0	62	ShouldNotReachHere();
aoqi@0	63	}
aoqi@0	64	goto do_non_sethi;
aoqi@0	65	#endif
aoqi@0	66
aoqi@0	67	case Assembler::arith_op:
aoqi@0	68	#ifdef ASSERT
aoqi@0	69	switch (Assembler::inv_op3(inst)) {
aoqi@0	70	case Assembler::or_op3:
aoqi@0	71	case Assembler::add_op3:
aoqi@0	72	case Assembler::jmpl_op3:
aoqi@0	73	break;
aoqi@0	74	default:
aoqi@0	75	ShouldNotReachHere();
aoqi@0	76	}
aoqi@0	77	do_non_sethi:;
aoqi@0	78	#endif
aoqi@0	79	{
aoqi@0	80	guarantee(Assembler::inv_immed(inst), "must have a simm13 field");
aoqi@0	81	int simm13 = Assembler::low10((intptr_t)x) + o;
aoqi@0	82	guarantee(Assembler::is_simm13(simm13), "offset can't overflow simm13");
aoqi@0	83	inst &= ~Assembler::simm( -1, 13);
aoqi@0	84	inst |= Assembler::simm(simm13, 13);
aoqi@0	85	if (verify_only) {
aoqi@0	86	assert(ip->long_at(0) == inst, "instructions must match");
aoqi@0	87	} else {
aoqi@0	88	ip->set_long_at(0, inst);
aoqi@0	89	}
aoqi@0	90	}
aoqi@0	91	break;
aoqi@0	92
aoqi@0	93	case Assembler::branch_op:
aoqi@0	94	{
aoqi@0	95	#ifdef _LP64
aoqi@0	96	jint inst2;
aoqi@0	97	guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
aoqi@0	98	if (format() != 0) {
aoqi@0	99	assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, "only narrow oops or klasses case");
aoqi@0	100	jint np = type() == relocInfo::oop_type ? oopDesc::encode_heap_oop((oop)x) : Klass::encode_klass((Klass*)x);
aoqi@0	101	inst &= ~Assembler::hi22(-1);
aoqi@0	102	inst |= Assembler::hi22((intptr_t)np);
aoqi@0	103	if (verify_only) {
aoqi@0	104	assert(ip->long_at(0) == inst, "instructions must match");
aoqi@0	105	} else {
aoqi@0	106	ip->set_long_at(0, inst);
aoqi@0	107	}
aoqi@0	108	inst2 = ip->long_at( NativeInstruction::nop_instruction_size );
aoqi@0	109	guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op");
aoqi@0	110	if (verify_only) {
aoqi@0	111	assert(ip->long_at(NativeInstruction::nop_instruction_size) == NativeInstruction::set_data32_simm13( inst2, (intptr_t)np),
aoqi@0	112	"instructions must match");
aoqi@0	113	} else {
aoqi@0	114	ip->set_long_at(NativeInstruction::nop_instruction_size, NativeInstruction::set_data32_simm13( inst2, (intptr_t)np));
aoqi@0	115	}
aoqi@0	116	break;
aoqi@0	117	}
aoqi@0	118	if (verify_only) {
aoqi@0	119	ip->verify_data64_sethi( ip->addr_at(0), (intptr_t)x );
aoqi@0	120	} else {
aoqi@0	121	ip->set_data64_sethi( ip->addr_at(0), (intptr_t)x );
aoqi@0	122	}
aoqi@0	123	#else
aoqi@0	124	guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
aoqi@0	125	inst &= ~Assembler::hi22( -1);
aoqi@0	126	inst |= Assembler::hi22((intptr_t)x);
aoqi@0	127	// (ignore offset; it doesn't play into the sethi)
aoqi@0	128	if (verify_only) {
aoqi@0	129	assert(ip->long_at(0) == inst, "instructions must match");
aoqi@0	130	} else {
aoqi@0	131	ip->set_long_at(0, inst);
aoqi@0	132	}
aoqi@0	133	#endif
aoqi@0	134	}
aoqi@0	135	break;
aoqi@0	136
aoqi@0	137	default:
aoqi@0	138	guarantee(false, "instruction must perform arithmetic or memory access");
aoqi@0	139	}
aoqi@0	140	}
aoqi@0	141
aoqi@0	142
aoqi@0	143	address Relocation::pd_call_destination(address orig_addr) {
aoqi@0	144	intptr_t adj = 0;
aoqi@0	145	if (orig_addr != NULL) {
aoqi@0	146	// We just moved this call instruction from orig_addr to addr().
aoqi@0	147	// This means its target will appear to have grown by addr() - orig_addr.
aoqi@0	148	adj = -( addr() - orig_addr );
aoqi@0	149	}
aoqi@0	150	if (NativeCall::is_call_at(addr())) {
aoqi@0	151	NativeCall* call = nativeCall_at(addr());
aoqi@0	152	return call->destination() + adj;
aoqi@0	153	}
aoqi@0	154	if (NativeFarCall::is_call_at(addr())) {
aoqi@0	155	NativeFarCall* call = nativeFarCall_at(addr());
aoqi@0	156	return call->destination() + adj;
aoqi@0	157	}
aoqi@0	158	// Special case: Patchable branch local to the code cache.
aoqi@0	159	// This will break badly if the code cache grows larger than a few Mb.
aoqi@0	160	NativeGeneralJump* br = nativeGeneralJump_at(addr());
aoqi@0	161	return br->jump_destination() + adj;
aoqi@0	162	}
aoqi@0	163
aoqi@0	164
aoqi@0	165	void Relocation::pd_set_call_destination(address x) {
aoqi@0	166	if (NativeCall::is_call_at(addr())) {
aoqi@0	167	NativeCall* call = nativeCall_at(addr());
aoqi@0	168	call->set_destination(x);
aoqi@0	169	return;
aoqi@0	170	}
aoqi@0	171	if (NativeFarCall::is_call_at(addr())) {
aoqi@0	172	NativeFarCall* call = nativeFarCall_at(addr());
aoqi@0	173	call->set_destination(x);
aoqi@0	174	return;
aoqi@0	175	}
aoqi@0	176	// Special case: Patchable branch local to the code cache.
aoqi@0	177	// This will break badly if the code cache grows larger than a few Mb.
aoqi@0	178	NativeGeneralJump* br = nativeGeneralJump_at(addr());
aoqi@0	179	br->set_jump_destination(x);
aoqi@0	180	}
aoqi@0	181
aoqi@0	182
aoqi@0	183	address* Relocation::pd_address_in_code() {
aoqi@0	184	// SPARC never embeds addresses in code, at present.
aoqi@0	185	//assert(type() == relocInfo::oop_type, "only oops are inlined at present");
aoqi@0	186	return (address*)addr();
aoqi@0	187	}
aoqi@0	188
aoqi@0	189
aoqi@0	190	address Relocation::pd_get_address_from_code() {
aoqi@0	191	// SPARC never embeds addresses in code, at present.
aoqi@0	192	//assert(type() == relocInfo::oop_type, "only oops are inlined at present");
aoqi@0	193	return *(address*)addr();
aoqi@0	194	}
aoqi@0	195
aoqi@0	196	void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0	197	}
aoqi@0	198
aoqi@0	199	void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@0	200	}
aoqi@0	201
aoqi@0	202	void metadata_Relocation::pd_fix_value(address x) {
aoqi@0	203	}