assembler.inline.hpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25inline void AbstractAssembler::sync() { 26 CodeSection* cs = code_section(); 27 guarantee(cs->start() == _code_begin, "must not shift code buffer"); 28 cs->set_end(_code_pos); 29} 30 31inline void AbstractAssembler::emit_byte(int x) { 32 assert(isByte(x), "not a byte"); 33 *(unsigned char*)_code_pos = (unsigned char)x; 34 _code_pos += sizeof(unsigned char); 35 sync(); 36} 37 38 39inline void AbstractAssembler::emit_word(int x) { 40 *(short*)_code_pos = (short)x; 41 _code_pos += sizeof(short); 42 sync(); 43} 44 45 46inline void AbstractAssembler::emit_long(jint x) { 47 *(jint*)_code_pos = x; 48 _code_pos += sizeof(jint); 49 sync(); 50} 51 52inline void AbstractAssembler::emit_address(address x) { 53 *(address*)_code_pos = x; 54 _code_pos += sizeof(address); 55 sync(); 56} 57 58inline address AbstractAssembler::inst_mark() const { 59 return code_section()->mark(); 60} 61 62 63inline void AbstractAssembler::set_inst_mark() { 64 code_section()->set_mark(); 65} 66 67 68inline void AbstractAssembler::clear_inst_mark() { 69 code_section()->clear_mark(); 70} 71 72 73inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) { 74 assert(!pd_check_instruction_mark() 75 || inst_mark() == NULL || inst_mark() == _code_pos, 76 "call relocate() between instructions"); 77 code_section()->relocate(_code_pos, rspec, format); 78} 79 80 81inline CodeBuffer* AbstractAssembler::code() const { 82 return code_section()->outer(); 83} 84 85inline int AbstractAssembler::sect() const { 86 return code_section()->index(); 87} 88 89inline int AbstractAssembler::locator() const { 90 return CodeBuffer::locator(offset(), sect()); 91} 92 93inline address AbstractAssembler::target(Label& L) { 94 return code_section()->target(L, pc()); 95} 96 97inline int Label::loc_pos() const { 98 return CodeBuffer::locator_pos(loc()); 99} 100 101inline int Label::loc_sect() const { 102 return CodeBuffer::locator_sect(loc()); 103} 104 105inline void Label::bind_loc(int pos, int sect) { 106 bind_loc(CodeBuffer::locator(pos, sect)); 107} 108 109address AbstractAssembler::address_constant(Label& L) { 110 address c = NULL; 111 address ptr = start_a_const(sizeof(c), sizeof(c)); 112 if (ptr != NULL) { 113 relocate(Relocation::spec_simple(relocInfo::internal_word_type)); 114 *(address*)ptr = c = code_section()->target(L, ptr); 115 _code_pos = ptr + sizeof(c); 116 end_a_const(); 117 } 118 return ptr; 119} 120 121address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) { 122 int addressSize = sizeof(address); 123 int sizeLabel = addressSize * labels.length(); 124 address ptr = start_a_const(sizeLabel, addressSize); 125 126 if (ptr != NULL) { 127 address *labelLoc = (address*)ptr; 128 for (int i=0; i < labels.length(); i++) { 129 emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i])); 130 code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type); 131 } 132 end_a_const(); 133 } 134 return ptr; 135} 136