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src/share/vm/asm/assembler.inline.hpp@c89f86385056 (annotated)

src/share/vm/asm/assembler.inline.hpp

Fri, 20 Mar 2009 23:19:36 -0700

author

jrose

date

Fri, 20 Mar 2009 23:19:36 -0700

changeset 1100

c89f86385056

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never

duke@435	1	/*
duke@435	2	* Copyright 1997-2006 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	inline void AbstractAssembler::sync() {
duke@435	26	CodeSection* cs = code_section();
duke@435	27	guarantee(cs->start() == _code_begin, "must not shift code buffer");
duke@435	28	cs->set_end(_code_pos);
duke@435	29	}
duke@435	30
duke@435	31	inline void AbstractAssembler::emit_byte(int x) {
duke@435	32	assert(isByte(x), "not a byte");
duke@435	33	*(unsigned char*)_code_pos = (unsigned char)x;
duke@435	34	_code_pos += sizeof(unsigned char);
duke@435	35	sync();
duke@435	36	}
duke@435	37
duke@435	38
duke@435	39	inline void AbstractAssembler::emit_word(int x) {
duke@435	40	*(short*)_code_pos = (short)x;
duke@435	41	_code_pos += sizeof(short);
duke@435	42	sync();
duke@435	43	}
duke@435	44
duke@435	45
duke@435	46	inline void AbstractAssembler::emit_long(jint x) {
duke@435	47	*(jint*)_code_pos = x;
duke@435	48	_code_pos += sizeof(jint);
duke@435	49	sync();
duke@435	50	}
duke@435	51
duke@435	52	inline void AbstractAssembler::emit_address(address x) {
duke@435	53	*(address*)_code_pos = x;
duke@435	54	_code_pos += sizeof(address);
duke@435	55	sync();
duke@435	56	}
duke@435	57
duke@435	58	inline address AbstractAssembler::inst_mark() const {
duke@435	59	return code_section()->mark();
duke@435	60	}
duke@435	61
duke@435	62
duke@435	63	inline void AbstractAssembler::set_inst_mark() {
duke@435	64	code_section()->set_mark();
duke@435	65	}
duke@435	66
duke@435	67
duke@435	68	inline void AbstractAssembler::clear_inst_mark() {
duke@435	69	code_section()->clear_mark();
duke@435	70	}
duke@435	71
duke@435	72
duke@435	73	inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
duke@435	74	assert(!pd_check_instruction_mark()
duke@435	75	|| inst_mark() == NULL || inst_mark() == _code_pos,
duke@435	76	"call relocate() between instructions");
duke@435	77	code_section()->relocate(_code_pos, rspec, format);
duke@435	78	}
duke@435	79
duke@435	80
duke@435	81	inline CodeBuffer* AbstractAssembler::code() const {
duke@435	82	return code_section()->outer();
duke@435	83	}
duke@435	84
duke@435	85	inline int AbstractAssembler::sect() const {
duke@435	86	return code_section()->index();
duke@435	87	}
duke@435	88
duke@435	89	inline int AbstractAssembler::locator() const {
duke@435	90	return CodeBuffer::locator(offset(), sect());
duke@435	91	}
duke@435	92
duke@435	93	inline address AbstractAssembler::target(Label& L) {
duke@435	94	return code_section()->target(L, pc());
duke@435	95	}
duke@435	96
duke@435	97	inline int Label::loc_pos() const {
duke@435	98	return CodeBuffer::locator_pos(loc());
duke@435	99	}
duke@435	100
duke@435	101	inline int Label::loc_sect() const {
duke@435	102	return CodeBuffer::locator_sect(loc());
duke@435	103	}
duke@435	104
duke@435	105	inline void Label::bind_loc(int pos, int sect) {
duke@435	106	bind_loc(CodeBuffer::locator(pos, sect));
duke@435	107	}
duke@435	108
duke@435	109	address AbstractAssembler::address_constant(Label& L) {
duke@435	110	address c = NULL;
duke@435	111	address ptr = start_a_const(sizeof(c), sizeof(c));
duke@435	112	if (ptr != NULL) {
duke@435	113	relocate(Relocation::spec_simple(relocInfo::internal_word_type));
duke@435	114	*(address*)ptr = c = code_section()->target(L, ptr);
duke@435	115	_code_pos = ptr + sizeof(c);
duke@435	116	end_a_const();
duke@435	117	}
duke@435	118	return ptr;
duke@435	119	}
duke@435	120
duke@435	121	address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) {
duke@435	122	int addressSize = sizeof(address);
duke@435	123	int sizeLabel = addressSize * labels.length();
duke@435	124	address ptr = start_a_const(sizeLabel, addressSize);
duke@435	125
duke@435	126	if (ptr != NULL) {
duke@435	127	address *labelLoc = (address*)ptr;
duke@435	128	for (int i=0; i < labels.length(); i++) {
duke@435	129	emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i]));
duke@435	130	code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type);
duke@435	131	}
duke@435	132	end_a_const();
duke@435	133	}
duke@435	134	return ptr;
duke@435	135	}