1// Copyright (c) 2006-2007 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright
9// notice, this list of conditions and the following disclaimer in the
10// documentation and/or other materials provided with the distribution;
11// neither the name of the copyright holders nor the names of its
12// contributors may be used to endorse or promote products derived from
13// this software without specific prior written permission.
14//
15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26//
27// Authors: Gabe Black
28// Steve Reinhardt
29
30////////////////////////////////////////////////////////////////////
31//
32// Trap instructions
33//
34
35output header {{
36 /**
37 * Base class for trap instructions,
38 * or instructions that always fault.
39 */
40 class Trap : public SparcStaticInst
41 {
42 protected:
43
44 // Constructor
45 Trap(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
46 SparcStaticInst(mnem, _machInst, __opClass), trapNum(SW_TRAP)
47 {
48 }
49
50 std::string generateDisassembly(Addr pc,
51 const SymbolTable *symtab) const;
52
53 int trapNum;
54 };
55}};
56
57output decoder {{
58 std::string
59 Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const
60 {
61 std::stringstream response;
62
63 printMnemonic(response, mnemonic);
64 ccprintf(response, " ");
65 printReg(response, _srcRegIdx[0]);
66 ccprintf(response, ", 0x%x", trapNum);
67 ccprintf(response, ", or ");
68 printReg(response, _srcRegIdx[1]);
69 return response.str();
70 }
71}};
72
35def template TrapExecute {{
36 Fault
37 %(class_name)s::execute(ExecContext *xc,
38 Trace::InstRecord *traceData) const
39 {
40 Fault fault = NoFault;
41 %(op_decl)s;
42 %(op_rd)s;
43 %(code)s
44 return fault;
45 }
46}};
47
48def template FpUnimplExecute {{
49 Fault
50 %(class_name)s::execute(ExecContext *xc,
51 Trace::InstRecord *traceData) const
52 {
53 Fault fault = NoFault;
54 %(op_decl)s;
55 %(op_rd)s;
56 %(code)s
57 %(op_wb)s;
58 return fault;
59 }
60}};
61
62def format Trap(code, *opt_flags) {{
63 iop = InstObjParams(name, Name, 'Trap', code, opt_flags)
64 header_output = BasicDeclare.subst(iop)
65 decoder_output = BasicConstructor.subst(iop)
66 decode_block = BasicDecode.subst(iop)
67 exec_output = TrapExecute.subst(iop)
68}};
69
108output header {{
109 class FpUnimpl : public SparcStaticInst
110 {
111 protected:
112 FpUnimpl(const char *mnem,
113 ExtMachInst _machInst, OpClass __opClass)
114 : SparcStaticInst(mnem, _machInst, __opClass)
115 {
116 }
117
118 std::string
119 generateDisassembly(Addr pc, const SymbolTable *symtab) const
120 {
121 return mnemonic;
122 }
123 };
124}};
125
70def format FpUnimpl(*flags) {{
71 fpunimpl_code = '''
72 Fsr = insertBits(Fsr, 16, 14, 3);
73 fault = std::make_shared<FpExceptionOther>();
74 '''
75 iop = InstObjParams(name, Name, 'FpUnimpl', fpunimpl_code, flags)
76 header_output = BasicDeclare.subst(iop)
77 decoder_output = BasicConstructor.subst(iop)
78 decode_block = BasicDecode.subst(iop)
79 exec_output = FpUnimplExecute.subst(iop)
80}};