1 // 2 // Copyright 1999-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 // CA 95054 USA or visit www.sun.com if you need additional information or 21 // have any questions. 22 // 23 // 24 25 // X86 Solaris Architecture Description File 26 27 //----------OS-DEPENDENT ENCODING BLOCK----------------------------------------------------- 28 // This block specifies the encoding classes used by the compiler to output 29 // byte streams. Encoding classes generate functions which are called by 30 // Machine Instruction Nodes in order to generate the bit encoding of the 31 // instruction. Operands specify their base encoding interface with the 32 // interface keyword. There are currently supported four interfaces, 33 // REG_INTER, CONST_INTER, MEMORY_INTER, & COND_INTER. REG_INTER causes an 34 // operand to generate a function which returns its register number when 35 // queried. CONST_INTER causes an operand to generate a function which 36 // returns the value of the constant when queried. MEMORY_INTER causes an 37 // operand to generate four functions which return the Base Register, the 38 // Index Register, the Scale Value, and the Offset Value of the operand when 39 // queried. COND_INTER causes an operand to generate six functions which 40 // return the encoding code (ie - encoding bits for the instruction) 41 // associated with each basic boolean condition for a conditional instruction. 42 // Instructions specify two basic values for encoding. They use the 43 // ins_encode keyword to specify their encoding class (which must be one of 44 // the class names specified in the encoding block), and they use the 45 // opcode keyword to specify, in order, their primary, secondary, and 46 // tertiary opcode. Only the opcode sections which a particular instruction 47 // needs for encoding need to be specified. 48 encode %{ 49 // Build emit functions for each basic byte or larger field in the intel 50 // encoding scheme (opcode, rm, sib, immediate), and call them from C++ 51 // code in the enc_class source block. Emit functions will live in the 52 // main source block for now. In future, we can generalize this by 53 // adding a syntax that specifies the sizes of fields in an order, 54 // so that the adlc can build the emit functions automagically 55 56 enc_class solaris_tlsencode (eRegP dst) %{ 57 Register dstReg = as_Register($dst$$reg); 58 MacroAssembler* masm = new MacroAssembler(&cbuf); 59 masm->get_thread(dstReg); 60 %} 61 62 enc_class solaris_breakpoint %{ 63 MacroAssembler* masm = new MacroAssembler(&cbuf); 64 // Really need to fix this 65 masm->push(rax); 66 masm->push(rcx); 67 masm->push(rdx); 68 masm->call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint))); 69 masm->pop(rdx); 70 masm->pop(rcx); 71 masm->pop(rax); 72 %} 73 74 enc_class call_epilog %{ 75 if( VerifyStackAtCalls ) { 76 // Check that stack depth is unchanged: find majik cookie on stack 77 int framesize = ra_->reg2offset_unchecked(OptoReg::add(ra_->_matcher._old_SP,-3*VMRegImpl::slots_per_word)); 78 if(framesize >= 128) { 79 emit_opcode(cbuf, 0x81); // cmp [esp+0],0xbadb1ood 80 emit_d8(cbuf,0xBC); 81 emit_d8(cbuf,0x24); 82 emit_d32(cbuf,framesize); // Find majik cookie from ESP 83 emit_d32(cbuf, 0xbadb100d); 84 } 85 else { 86 emit_opcode(cbuf, 0x81); // cmp [esp+0],0xbadb1ood 87 emit_d8(cbuf,0x7C); 88 emit_d8(cbuf,0x24); 89 emit_d8(cbuf,framesize); // Find majik cookie from ESP 90 emit_d32(cbuf, 0xbadb100d); 91 } 92 // jmp EQ around INT3 93 // QQQ TODO 94 const int jump_around = 11; // size of call to breakpoint (and register preserve), 1 for CC 95 emit_opcode(cbuf,0x74); 96 emit_d8(cbuf, jump_around); 97 // QQQ temporary 98 emit_break(cbuf); 99 // Die if stack mismatch 100 // emit_opcode(cbuf,0xCC); 101 } 102 %} 103 104 %} 105 106 // INSTRUCTIONS -- Platform dependent 107 108 //----------OS and Locking Instructions---------------------------------------- 109 110 // This name is KNOWN by the ADLC and cannot be changed. 111 // The ADLC forces a 'TypeRawPtr::BOTTOM' output type 112 // for this guy. 113 instruct tlsLoadP(eRegP dst, eFlagsReg cr) %{ 114 match(Set dst (ThreadLocal)); 115 effect(DEF dst, KILL cr); 116 117 format %{ "MOV $dst, Thread::current()" %} 118 ins_encode( solaris_tlsencode(dst) ); 119 ins_pipe( ialu_reg_fat ); 120 %} 121 122 instruct TLS(eRegP dst) %{ 123 match(Set dst (ThreadLocal)); 124 125 expand %{ 126 tlsLoadP(dst); 127 %} 128 %} 129 130 // Die now 131 instruct ShouldNotReachHere( ) 132 %{ 133 match(Halt); 134 135 // Use the following format syntax 136 format %{ "INT3 ; ShouldNotReachHere" %} 137 // QQQ TODO for now call breakpoint 138 // opcode(0xCC); 139 // ins_encode(Opc); 140 ins_encode(solaris_breakpoint); 141 ins_pipe( pipe_slow ); 142 %} 143 144 145 146 // Platform dependent source 147 148 source %{ 149 150 // emit an interrupt that is caught by the debugger 151 void emit_break(CodeBuffer &cbuf) { 152 153 // Debugger doesn't really catch this but best we can do so far QQQ 154 MacroAssembler* masm = new MacroAssembler(&cbuf); 155 masm->call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint))); 156 } 157 158 void MachBreakpointNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const { 159 emit_break(cbuf); 160 } 161 162 163 uint MachBreakpointNode::size(PhaseRegAlloc *ra_) const { 164 return 5; 165 } 166 167 %}