Mercurial > hg > truffle
view src/os_cpu/linux_x86/vm/linux_x86_64.ad @ 3438:0e9653efc6ea
Merge
author | asaha |
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date | Mon, 06 Jun 2011 10:55:41 -0700 |
parents | c18cbe5936b8 |
children | 95134e034042 |
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// // Copyright (c) 2003, 2006, 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. // // 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA // or visit www.oracle.com if you need additional information or have any // questions. // // // AMD64 Linux 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 Java_To_Runtime(method meth) %{ // No relocation needed // movq r10, <meth> emit_opcode(cbuf, Assembler::REX_WB); emit_opcode(cbuf, 0xB8 | (R10_enc - 8)); emit_d64(cbuf, (int64_t) $meth$$method); // call (r10) emit_opcode(cbuf, Assembler::REX_B); emit_opcode(cbuf, 0xFF); emit_opcode(cbuf, 0xD0 | (R10_enc - 8)); %} enc_class linux_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) { if (framesize < 0x80) { emit_opcode(cbuf, Assembler::REX_W); emit_opcode(cbuf, 0x81); // cmpq [rsp+0],0xbadb1ood emit_d8(cbuf, 0x7C); emit_d8(cbuf, 0x24); emit_d8(cbuf, framesize); // Find majik cookie from ESP emit_d32(cbuf, 0xbadb100d); } else { emit_opcode(cbuf, Assembler::REX_W); emit_opcode(cbuf, 0x81); // cmpq [rsp+0],0xbadb1ood emit_d8(cbuf, 0xBC); emit_d8(cbuf, 0x24); emit_d32(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(r15_RegP dst) %{ match(Set dst (ThreadLocal)); effect(DEF dst); size(0); format %{ "# TLS is in R15" %} ins_encode( /*empty encoding*/ ); ins_pipe(ialu_reg_reg); %} // Die now instruct ShouldNotReachHere() %{ match(Halt); // Use the following format syntax format %{ "int3\t# ShouldNotReachHere" %} // QQQ TODO for now call breakpoint // opcode(0xCC); // ins_encode(Opc); ins_encode(linux_breakpoint); ins_pipe(pipe_slow); %} // Platform dependent source source %{ int MachCallRuntimeNode::ret_addr_offset() { return 13; // movq r10,#addr; callq (r10) } // 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; } %}