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

src/cpu/sparc/vm/relocInfo_sparc.cpp@660978a2a31a (annotated)

src/cpu/sparc/vm/relocInfo_sparc.cpp

Thu, 12 Mar 2009 10:37:46 -0700

author

kvn

date

Thu, 12 Mar 2009 10:37:46 -0700

changeset 1077

660978a2a31a

parent 739

dc7f315e41f7

child 1162

6b2273dd6fa9

permissions

-rw-r--r--

6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp

duke@435	1	/*
xdono@631	2	* Copyright 1998-2008 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_relocInfo_sparc.cpp.incl"
duke@435	27
duke@435	28	void Relocation::pd_set_data_value(address x, intptr_t o) {
duke@435	29	NativeInstruction* ip = nativeInstruction_at(addr());
duke@435	30	jint inst = ip->long_at(0);
duke@435	31	assert(inst != NativeInstruction::illegal_instruction(), "no breakpoint");
duke@435	32	switch (Assembler::inv_op(inst)) {
duke@435	33
duke@435	34	case Assembler::ldst_op:
duke@435	35	#ifdef ASSERT
duke@435	36	switch (Assembler::inv_op3(inst)) {
duke@435	37	case Assembler::lduw_op3:
duke@435	38	case Assembler::ldub_op3:
duke@435	39	case Assembler::lduh_op3:
duke@435	40	case Assembler::ldd_op3:
duke@435	41	case Assembler::ldsw_op3:
duke@435	42	case Assembler::ldsb_op3:
duke@435	43	case Assembler::ldsh_op3:
duke@435	44	case Assembler::ldx_op3:
duke@435	45	case Assembler::ldf_op3:
duke@435	46	case Assembler::lddf_op3:
duke@435	47	case Assembler::stw_op3:
duke@435	48	case Assembler::stb_op3:
duke@435	49	case Assembler::sth_op3:
duke@435	50	case Assembler::std_op3:
duke@435	51	case Assembler::stx_op3:
duke@435	52	case Assembler::stf_op3:
duke@435	53	case Assembler::stdf_op3:
duke@435	54	case Assembler::casa_op3:
duke@435	55	case Assembler::casxa_op3:
duke@435	56	break;
duke@435	57	default:
duke@435	58	ShouldNotReachHere();
duke@435	59	}
duke@435	60	goto do_non_sethi;
duke@435	61	#endif
duke@435	62
duke@435	63	case Assembler::arith_op:
duke@435	64	#ifdef ASSERT
duke@435	65	switch (Assembler::inv_op3(inst)) {
duke@435	66	case Assembler::or_op3:
duke@435	67	case Assembler::add_op3:
duke@435	68	case Assembler::jmpl_op3:
duke@435	69	break;
duke@435	70	default:
duke@435	71	ShouldNotReachHere();
duke@435	72	}
duke@435	73	do_non_sethi:;
duke@435	74	#endif
duke@435	75	{
duke@435	76	guarantee(Assembler::inv_immed(inst), "must have a simm13 field");
duke@435	77	int simm13 = Assembler::low10((intptr_t)x) + o;
duke@435	78	guarantee(Assembler::is_simm13(simm13), "offset can't overflow simm13");
duke@435	79	inst &= ~Assembler::simm( -1, 13);
duke@435	80	inst |= Assembler::simm(simm13, 13);
duke@435	81	ip->set_long_at(0, inst);
duke@435	82	}
duke@435	83	break;
duke@435	84
duke@435	85	case Assembler::branch_op:
duke@435	86	{
duke@435	87	#ifdef _LP64
duke@435	88	jint inst2;
duke@435	89	guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
kvn@599	90	if (format() != 0) {
kvn@599	91	assert(type() == relocInfo::oop_type, "only narrow oops case");
kvn@599	92	jint np = oopDesc::encode_heap_oop((oop)x);
kvn@599	93	inst &= ~Assembler::hi22(-1);
kvn@599	94	inst |= Assembler::hi22((intptr_t)np);
kvn@599	95	ip->set_long_at(0, inst);
kvn@599	96	inst2 = ip->long_at( NativeInstruction::nop_instruction_size );
kvn@599	97	guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op");
kvn@599	98	ip->set_long_at(NativeInstruction::nop_instruction_size, ip->set_data32_simm13( inst2, (intptr_t)np));
kvn@599	99	break;
kvn@599	100	}
duke@435	101	ip->set_data64_sethi( ip->addr_at(0), (intptr_t)x );
duke@435	102	#ifdef COMPILER2
duke@435	103	// [RGV] Someone must have missed putting in a reloc entry for the
duke@435	104	// add in compiler2.
duke@435	105	inst2 = ip->long_at( NativeMovConstReg::add_offset );
duke@435	106	guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op");
duke@435	107	ip->set_long_at(NativeMovConstReg::add_offset,ip->set_data32_simm13( inst2, (intptr_t)x+o));
duke@435	108	#endif
duke@435	109	#else
duke@435	110	guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
duke@435	111	inst &= ~Assembler::hi22( -1);
duke@435	112	inst |= Assembler::hi22((intptr_t)x);
duke@435	113	// (ignore offset; it doesn't play into the sethi)
duke@435	114	ip->set_long_at(0, inst);
duke@435	115	#endif
duke@435	116	}
duke@435	117	break;
duke@435	118
duke@435	119	default:
duke@435	120	guarantee(false, "instruction must perform arithmetic or memory access");
duke@435	121	}
duke@435	122	}
duke@435	123
duke@435	124
duke@435	125	address Relocation::pd_call_destination(address orig_addr) {
duke@435	126	intptr_t adj = 0;
duke@435	127	if (orig_addr != NULL) {
duke@435	128	// We just moved this call instruction from orig_addr to addr().
duke@435	129	// This means its target will appear to have grown by addr() - orig_addr.
duke@435	130	adj = -( addr() - orig_addr );
duke@435	131	}
duke@435	132	if (NativeCall::is_call_at(addr())) {
duke@435	133	NativeCall* call = nativeCall_at(addr());
duke@435	134	return call->destination() + adj;
duke@435	135	}
duke@435	136	if (NativeFarCall::is_call_at(addr())) {
duke@435	137	NativeFarCall* call = nativeFarCall_at(addr());
duke@435	138	return call->destination() + adj;
duke@435	139	}
duke@435	140	// Special case: Patchable branch local to the code cache.
duke@435	141	// This will break badly if the code cache grows larger than a few Mb.
duke@435	142	NativeGeneralJump* br = nativeGeneralJump_at(addr());
duke@435	143	return br->jump_destination() + adj;
duke@435	144	}
duke@435	145
duke@435	146
duke@435	147	void Relocation::pd_set_call_destination(address x) {
duke@435	148	if (NativeCall::is_call_at(addr())) {
duke@435	149	NativeCall* call = nativeCall_at(addr());
duke@435	150	call->set_destination(x);
duke@435	151	return;
duke@435	152	}
duke@435	153	if (NativeFarCall::is_call_at(addr())) {
duke@435	154	NativeFarCall* call = nativeFarCall_at(addr());
duke@435	155	call->set_destination(x);
duke@435	156	return;
duke@435	157	}
duke@435	158	// Special case: Patchable branch local to the code cache.
duke@435	159	// This will break badly if the code cache grows larger than a few Mb.
duke@435	160	NativeGeneralJump* br = nativeGeneralJump_at(addr());
duke@435	161	br->set_jump_destination(x);
duke@435	162	}
duke@435	163
duke@435	164
duke@435	165	address* Relocation::pd_address_in_code() {
duke@435	166	// SPARC never embeds addresses in code, at present.
duke@435	167	//assert(type() == relocInfo::oop_type, "only oops are inlined at present");
duke@435	168	return (address*)addr();
duke@435	169	}
duke@435	170
duke@435	171
duke@435	172	address Relocation::pd_get_address_from_code() {
duke@435	173	// SPARC never embeds addresses in code, at present.
duke@435	174	//assert(type() == relocInfo::oop_type, "only oops are inlined at present");
duke@435	175	return *(address*)addr();
duke@435	176	}
duke@435	177
duke@435	178
duke@435	179	int Relocation::pd_breakpoint_size() {
duke@435	180	// minimum breakpoint size, in short words
duke@435	181	return NativeIllegalInstruction::instruction_size / sizeof(short);
duke@435	182	}
duke@435	183
duke@435	184	void Relocation::pd_swap_in_breakpoint(address x, short* instrs, int instrlen) {
duke@435	185	Untested("pd_swap_in_breakpoint");
duke@435	186	// %%% probably do not need a general instrlen; just use the trap size
duke@435	187	if (instrs != NULL) {
duke@435	188	assert(instrlen * sizeof(short) == NativeIllegalInstruction::instruction_size, "enough instrlen in reloc. data");
duke@435	189	for (int i = 0; i < instrlen; i++) {
duke@435	190	instrs[i] = ((short*)x)[i];
duke@435	191	}
duke@435	192	}
duke@435	193	NativeIllegalInstruction::insert(x);
duke@435	194	}
duke@435	195
duke@435	196
duke@435	197	void Relocation::pd_swap_out_breakpoint(address x, short* instrs, int instrlen) {
duke@435	198	Untested("pd_swap_out_breakpoint");
duke@435	199	assert(instrlen * sizeof(short) == sizeof(int), "enough buf");
duke@435	200	union { int l; short s[1]; } u;
duke@435	201	for (int i = 0; i < instrlen; i++) {
duke@435	202	u.s[i] = instrs[i];
duke@435	203	}
duke@435	204	NativeInstruction* ni = nativeInstruction_at(x);
duke@435	205	ni->set_long_at(0, u.l);
duke@435	206	}
never@739	207
never@739	208	void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
never@739	209	}
never@739	210
never@739	211	void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
never@739	212	}