src/os_cpu/windows_x86/vm/windows_x86_32.ad
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7145346 Cdiff src/os_cpu/windows_x86/vm/windows_x86_32.ad
src/os_cpu/windows_x86/vm/windows_x86_32.ad
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*** 1,7 ****
//
! // Copyright (c) 1999, 2010, 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.
*** 22,157 ****
//
//
// X86 Win32 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 tlsencode (eRegP dst, eRegP src) %{
- emit_rm(cbuf, 0x2, $dst$$reg, $src$$reg);
- emit_d32(cbuf, ThreadLocalStorage::get_thread_ptr_offset() );
- %}
-
- 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
- emit_opcode(cbuf,0x74);
- emit_d8(cbuf,1);
- // Die if stack mismatch
- emit_opcode(cbuf,0xCC);
- }
- %}
-
- %}
-
- // INSTRUCTIONS -- Platform dependent
-
-
- //----------OS and Locking Instructions----------------------------------------
-
- // The prefix of this name is KNOWN by the ADLC and cannot be changed.
- instruct tlsLoadP_prefixLoadP(eRegP t1) %{
- effect(DEF t1);
-
- format %{ "MOV $t1,FS:[0x00] "%}
- opcode(0x8B, 0x64);
- ins_encode(OpcS, OpcP, conmemref(t1));
- ins_pipe( ialu_reg_fat );
- %}
-
- // This name is KNOWN by the ADLC and cannot be changed.
- // The ADLC forces a 'TypeRawPtr::BOTTOM' output type
- // for this guy.
- // %%% Should do this with a clause like: bottom_type(TypeRawPtr::BOTTOM);
- instruct tlsLoadP(eRegP dst, eRegP t1) %{
- effect(DEF dst, USE t1);
-
- format %{ "MOV $dst,[$t1 + TLS::thread_ptr_offset()]" %}
- opcode(0x8B);
- ins_encode(OpcP, tlsencode(dst, t1));
- ins_pipe( ialu_reg_reg_fat );
- %}
-
- instruct TLS(eRegP dst) %{
- match(Set dst (ThreadLocal));
- expand %{
- eRegP t1;
- tlsLoadP_prefixLoadP(t1);
- tlsLoadP(dst, t1);
- %}
- %}
-
- // Die now
- instruct ShouldNotReachHere( )
- %{
- match(Halt);
- // Use the following format syntax
- format %{ "INT3 ; ShouldNotReachHere" %}
- opcode(0xCC);
- ins_encode(OpcP);
- ins_pipe( pipe_slow );
- %}
-
//
// Platform dependent source
//
source %{
// emit an interrupt that is caught by the debugger
! void emit_break(CodeBuffer &cbuf) {
! cbuf.insts()->emit_int8((unsigned char) 0xcc);
}
- void MachBreakpointNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
- emit_break(cbuf);
- }
-
-
- uint MachBreakpointNode::size(PhaseRegAlloc *ra_) const {
- return 1;
- }
-
-
%}
--- 22,38 ----
//
//
// X86 Win32 Architecture Description File
//
// Platform dependent source
//
source %{
// emit an interrupt that is caught by the debugger
! void emit_break(MacroAssembler &_masm) {
! __ emit_byte(0xCC);
}
%}
src/os_cpu/windows_x86/vm/windows_x86_32.ad
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