src/os_cpu/bsd_x86/vm/bsd_x86_32.ad

*** 1,7 ****
  //
! // Copyright (c) 1999, 2008, Oracle and/or its affiliates. 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.
--- 1,7 ----
  //
! // Copyright (c) 1999, 2012, Oracle and/or its affiliates. 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.
*** 22,160 ****
  //
  //
  
  // X86 Bsd Architecture Description File
  
- //----------OS-DEPENDENT ENCODING BLOCK-----------------------------------------------------
- // This block specifies the encoding classes used by the compiler to output
- // byte streams.  Encoding classes generate functions which are called by
- // Machine Instruction Nodes in order to generate the bit encoding of the
- // instruction.  Operands specify their base encoding interface with the
- // interface keyword.  There are currently supported four interfaces,
- // REG_INTER, CONST_INTER, MEMORY_INTER, & COND_INTER.  REG_INTER causes an
- // operand to generate a function which returns its register number when
- // queried.   CONST_INTER causes an operand to generate a function which
- // returns the value of the constant when queried.  MEMORY_INTER causes an
- // operand to generate four functions which return the Base Register, the
- // Index Register, the Scale Value, and the Offset Value of the operand when
- // queried.  COND_INTER causes an operand to generate six functions which
- // return the encoding code (ie - encoding bits for the instruction)
- // associated with each basic boolean condition for a conditional instruction.
- // Instructions specify two basic values for encoding.  They use the
- // ins_encode keyword to specify their encoding class (which must be one of
- // the class names specified in the encoding block), and they use the
- // opcode keyword to specify, in order, their primary, secondary, and
- // tertiary opcode.  Only the opcode sections which a particular instruction
- // needs for encoding need to be specified.
- encode %{
-   // Build emit functions for each basic byte or larger field in the intel
-   // encoding scheme (opcode, rm, sib, immediate), and call them from C++
-   // code in the enc_class source block.  Emit functions will live in the
-   // main source block for now.  In future, we can generalize this by
-   // adding a syntax that specifies the sizes of fields in an order,
-   // so that the adlc can build the emit functions automagically
  
-   enc_class bsd_tlsencode (eRegP dst) %{
-     Register dstReg = as_Register($dst$$reg);
-     MacroAssembler* masm = new MacroAssembler(&cbuf);
-       masm->get_thread(dstReg);
-   %}
- 
-   enc_class bsd_breakpoint  %{
-     MacroAssembler* masm = new MacroAssembler(&cbuf);
-     masm->call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
-   %}
- 
-   enc_class call_epilog %{
-     if( VerifyStackAtCalls ) {
-       // Check that stack depth is unchanged: find majik cookie on stack
-       int framesize = ra_->reg2offset_unchecked(OptoReg::add(ra_->_matcher._old_SP,-3*VMRegImpl::slots_per_word));
-       if(framesize >= 128) {
-         emit_opcode(cbuf, 0x81); // cmp [esp+0],0xbadb1ood
-         emit_d8(cbuf,0xBC);
-         emit_d8(cbuf,0x24);
-         emit_d32(cbuf,framesize); // Find majik cookie from ESP
-         emit_d32(cbuf, 0xbadb100d);
-       }
-       else {
-         emit_opcode(cbuf, 0x81); // cmp [esp+0],0xbadb1ood
-         emit_d8(cbuf,0x7C);
-         emit_d8(cbuf,0x24);
-         emit_d8(cbuf,framesize); // Find majik cookie from ESP
-         emit_d32(cbuf, 0xbadb100d);
-       }
-       // jmp EQ around INT3
-       // QQQ TODO
-       const int jump_around = 5; // size of call to breakpoint, 1 for CC
-       emit_opcode(cbuf,0x74);
-       emit_d8(cbuf, jump_around);
-       // QQQ temporary
-       emit_break(cbuf);
-       // Die if stack mismatch
-       // emit_opcode(cbuf,0xCC);
-     }
-   %}
- 
- %}
- 
- // INSTRUCTIONS -- Platform dependent
- 
- //----------OS and Locking Instructions----------------------------------------
- 
- // This name is KNOWN by the ADLC and cannot be changed.
- // The ADLC forces a 'TypeRawPtr::BOTTOM' output type
- // for this guy.
- instruct tlsLoadP(eRegP dst, eFlagsReg cr) %{
-   match(Set dst (ThreadLocal));
-   effect(DEF dst, KILL cr);
- 
-   format %{ "MOV    $dst, Thread::current()" %}
-   ins_encode( bsd_tlsencode(dst) );
-   ins_pipe( ialu_reg_fat );
- %}
- 
- instruct TLS(eRegP dst) %{
-   match(Set dst (ThreadLocal));
- 
-   expand %{
-     tlsLoadP(dst);
-   %}
- %}
- 
- // Die now
- instruct ShouldNotReachHere( )
- %{
-   match(Halt);
- 
-   // Use the following format syntax
-   format %{ "INT3   ; ShouldNotReachHere" %}
-   // QQQ TODO for now call breakpoint
-   // opcode(0xCC);
-   // ins_encode(Opc);
-   ins_encode(bsd_breakpoint);
-   ins_pipe( pipe_slow );
- %}
- 
- 
- 
  // Platform dependent source
  
  source %{
  
  // emit an interrupt that is caught by the debugger
! void emit_break(CodeBuffer &cbuf) {
! 
!   // Debugger doesn't really catch this but best we can do so far QQQ
!   MacroAssembler* masm = new MacroAssembler(&cbuf);
!   masm->call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
  }
  
- void MachBreakpointNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
-   emit_break(cbuf);
- }
- 
- 
- uint MachBreakpointNode::size(PhaseRegAlloc *ra_) const {
-   return 5;
- }
- 
  %}
--- 22,40 ----
  //
  //
  
  // X86 Bsd Architecture Description File
  
  
  // Platform dependent source
  
  source %{
  
  // emit an interrupt that is caught by the debugger
! void emit_break(MacroAssembler &_masm) {
!   // __ emit_byte(0xCC);
!   // TODO for now call breakpoint instead of INT3.
!   // Debugger doesn't really catch this but best we can do so far QQQ.
!   __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
  }
  
  %}