1 /*
   2  * Copyright (c) 1997, 2009, 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 
  25 #include "incls/_precompiled.incl"
  26 #include "incls/_assembler.cpp.incl"













  27 
  28 
  29 // Implementation of AbstractAssembler
  30 //
  31 // The AbstractAssembler is generating code into a CodeBuffer. To make code generation faster,
  32 // the assembler keeps a copy of the code buffers boundaries & modifies them when
  33 // emitting bytes rather than using the code buffers accessor functions all the time.
  34 // The code buffer is updated via set_code_end(...) after emitting a whole instruction.
  35 
  36 AbstractAssembler::AbstractAssembler(CodeBuffer* code) {
  37   if (code == NULL)  return;
  38   CodeSection* cs = code->insts();
  39   cs->clear_mark();   // new assembler kills old mark
  40   _code_section = cs;
  41   _code_begin  = cs->start();
  42   _code_limit  = cs->limit();
  43   _code_pos    = cs->end();
  44   _oop_recorder= code->oop_recorder();
  45   if (_code_begin == NULL)  {
  46     vm_exit_out_of_memory(0, err_msg("CodeCache: no room for %s",

   1 /*
   2  * Copyright (c) 1997, 2010, 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 
  25 #include "precompiled.hpp"
  26 #include "asm/assembler.hpp"
  27 #include "asm/assembler.inline.hpp"
  28 #include "asm/codeBuffer.hpp"
  29 #include "runtime/icache.hpp"
  30 #include "runtime/os.hpp"
  31 #ifdef TARGET_ARCH_x86
  32 # include "assembler_x86.inline.hpp"
  33 #endif
  34 #ifdef TARGET_ARCH_sparc
  35 # include "assembler_sparc.inline.hpp"
  36 #endif
  37 #ifdef TARGET_ARCH_zero
  38 # include "assembler_zero.inline.hpp"
  39 #endif
  40 
  41 
  42 // Implementation of AbstractAssembler
  43 //
  44 // The AbstractAssembler is generating code into a CodeBuffer. To make code generation faster,
  45 // the assembler keeps a copy of the code buffers boundaries & modifies them when
  46 // emitting bytes rather than using the code buffers accessor functions all the time.
  47 // The code buffer is updated via set_code_end(...) after emitting a whole instruction.
  48 
  49 AbstractAssembler::AbstractAssembler(CodeBuffer* code) {
  50   if (code == NULL)  return;
  51   CodeSection* cs = code->insts();
  52   cs->clear_mark();   // new assembler kills old mark
  53   _code_section = cs;
  54   _code_begin  = cs->start();
  55   _code_limit  = cs->limit();
  56   _code_pos    = cs->end();
  57   _oop_recorder= code->oop_recorder();
  58   if (_code_begin == NULL)  {
  59     vm_exit_out_of_memory(0, err_msg("CodeCache: no room for %s",