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

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+/*
+ * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+inline void AbstractAssembler::sync() {
+  CodeSection* cs = code_section();
+  guarantee(cs->start() == _code_begin, "must not shift code buffer");
+  cs->set_end(_code_pos);
+}
+
+inline void AbstractAssembler::emit_byte(int x) {
+  assert(isByte(x), "not a byte");
+  *(unsigned char*)_code_pos = (unsigned char)x;
+  _code_pos += sizeof(unsigned char);
+  sync();
+}
+
+
+inline void AbstractAssembler::emit_word(int x) {
+  *(short*)_code_pos = (short)x;
+  _code_pos += sizeof(short);
+  sync();
+}
+
+
+inline void AbstractAssembler::emit_long(jint x) {
+  *(jint*)_code_pos = x;
+  _code_pos += sizeof(jint);
+  sync();
+}
+
+inline void AbstractAssembler::emit_address(address x) {
+  *(address*)_code_pos = x;
+  _code_pos += sizeof(address);
+  sync();
+}
+
+inline address AbstractAssembler::inst_mark() const {
+  return code_section()->mark();
+}
+
+
+inline void AbstractAssembler::set_inst_mark() {
+  code_section()->set_mark();
+}
+
+
+inline void AbstractAssembler::clear_inst_mark() {
+  code_section()->clear_mark();
+}
+
+
+inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
+  assert(!pd_check_instruction_mark()
+         || inst_mark() == NULL || inst_mark() == _code_pos,
+         "call relocate() between instructions");
+  code_section()->relocate(_code_pos, rspec, format);
+}
+
+
+inline CodeBuffer* AbstractAssembler::code() const {
+  return code_section()->outer();
+}
+
+inline int AbstractAssembler::sect() const {
+  return code_section()->index();
+}
+
+inline int AbstractAssembler::locator() const {
+  return CodeBuffer::locator(offset(), sect());
+}
+
+inline address AbstractAssembler::target(Label& L) {
+  return code_section()->target(L, pc());
+}
+
+inline int Label::loc_pos() const {
+  return CodeBuffer::locator_pos(loc());
+}
+
+inline int Label::loc_sect() const {
+  return CodeBuffer::locator_sect(loc());
+}
+
+inline void Label::bind_loc(int pos, int sect) {
+  bind_loc(CodeBuffer::locator(pos, sect));
+}
+
+address AbstractAssembler::address_constant(Label& L) {
+  address c = NULL;
+  address ptr = start_a_const(sizeof(c), sizeof(c));
+  if (ptr != NULL) {
+    relocate(Relocation::spec_simple(relocInfo::internal_word_type));
+    *(address*)ptr = c = code_section()->target(L, ptr);
+    _code_pos = ptr + sizeof(c);
+    end_a_const();
+  }
+  return ptr;
+}
+
+address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) {
+  int addressSize = sizeof(address);
+  int sizeLabel = addressSize * labels.length();
+  address ptr = start_a_const(sizeLabel, addressSize);
+
+  if (ptr != NULL) {
+    address *labelLoc = (address*)ptr;
+    for (int i=0; i < labels.length(); i++) {
+      emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i]));
+      code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type);
+    }
+    end_a_const();
+  }
+  return ptr;
+}