2 * Copyright (c) 2007 The Hewlett-Packard Development Company
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 #ifndef __ARCH_X86_FAULTS_HH__
41 #define __ARCH_X86_FAULTS_HH__
45 #include "base/bitunion.hh"
46 #include "base/misc.hh"
47 #include "sim/faults.hh"
52 // Base class for all x86 "faults" where faults is in the m5 sense
53 class X86FaultBase : public FaultBase
56 const char * faultName;
61 X86FaultBase(const char * _faultName, const char * _mnem,
62 const uint8_t _vector, uint64_t _errorCode = (uint64_t)-1)
63 : faultName(_faultName), mnem(_mnem),
64 vector(_vector), errorCode(_errorCode)
68 const char * name() const
73 virtual bool isBenign()
78 virtual const char * mnemonic() const
88 void invoke(ThreadContext * tc,
89 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
91 virtual std::string describe() const;
94 // Base class for x86 faults which behave as if the underlying instruction
96 class X86Fault : public X86FaultBase
99 X86Fault(const char * name, const char * mnem,
100 const uint8_t vector, uint64_t _errorCode = (uint64_t)-1)
101 : X86FaultBase(name, mnem, vector, _errorCode)
105 // Base class for x86 traps which behave as if the underlying instruction
107 class X86Trap : public X86FaultBase
110 X86Trap(const char * name, const char * mnem,
111 const uint8_t vector, uint64_t _errorCode = (uint64_t)-1)
112 : X86FaultBase(name, mnem, vector, _errorCode)
115 void invoke(ThreadContext * tc,
116 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
119 // Base class for x86 aborts which seem to be catastrophic failures.
120 class X86Abort : public X86FaultBase
123 X86Abort(const char * name, const char * mnem,
124 const uint8_t vector, uint64_t _errorCode = (uint64_t)-1)
125 : X86FaultBase(name, mnem, vector, _errorCode)
128 void invoke(ThreadContext * tc,
129 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
132 // Base class for x86 interrupts.
133 class X86Interrupt : public X86FaultBase
136 X86Interrupt(const char * name, const char * mnem,
137 const uint8_t _vector, uint64_t _errorCode = (uint64_t)-1)
138 : X86FaultBase(name, mnem, _vector, _errorCode)
142 class UnimpInstFault : public FaultBase
145 const char * name() const
147 return "unimplemented_micro";
150 void invoke(ThreadContext * tc,
151 StaticInstPtr inst = StaticInst::nullStaticInstPtr)
153 panic("Unimplemented instruction!");
157 // Below is a summary of the interrupt/exception information in the
158 // architecture manuals.
160 // Class | Type | vector | Cause | mnem
161 //------------------------------------------------------------------------
162 //Contrib Fault 0 Divide-by-Zero-Error #DE
163 //Benign Either 1 Debug #DB
164 //Benign Interrupt 2 Non-Maskable-Interrupt #NMI
165 //Benign Trap 3 Breakpoint #BP
166 //Benign Trap 4 Overflow #OF
167 //Benign Fault 5 Bound-Range #BR
168 //Benign Fault 6 Invalid-Opcode #UD
169 //Benign Fault 7 Device-Not-Available #NM
170 //Benign Abort 8 Double-Fault #DF
171 // 9 Coprocessor-Segment-Overrun
172 //Contrib Fault 10 Invalid-TSS #TS
173 //Contrib Fault 11 Segment-Not-Present #NP
174 //Contrib Fault 12 Stack #SS
175 //Contrib Fault 13 General-Protection #GP
176 //Either Fault 14 Page-Fault #PF
178 //Benign Fault 16 x87 Floating-Point Exception Pending #MF
179 //Benign Fault 17 Alignment-Check #AC
180 //Benign Abort 18 Machine-Check #MC
181 //Benign Fault 19 SIMD Floating-Point #XF
183 //Contrib ? 30 Security Exception #SX
185 //Benign Interrupt 0-255 External Interrupts #INTR
186 //Benign Interrupt 0-255 Software Interrupts INTn
188 class DivideByZero : public X86Fault
192 X86Fault("Divide-by-Zero-Error", "#DE", 0)
196 class DebugException : public X86FaultBase
200 X86FaultBase("Debug", "#DB", 1)
204 class NonMaskableInterrupt : public X86Interrupt
207 NonMaskableInterrupt(uint8_t _vector) :
208 X86Interrupt("Non Maskable Interrupt", "#NMI", 2, _vector)
212 class Breakpoint : public X86Trap
216 X86Trap("Breakpoint", "#BP", 3)
220 class OverflowTrap : public X86Trap
224 X86Trap("Overflow", "#OF", 4)
228 class BoundRange : public X86Fault
232 X86Fault("Bound-Range", "#BR", 5)
236 class InvalidOpcode : public X86Fault
240 X86Fault("Invalid-Opcode", "#UD", 6)
243 void invoke(ThreadContext * tc,
244 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
247 class DeviceNotAvailable : public X86Fault
250 DeviceNotAvailable() :
251 X86Fault("Device-Not-Available", "#NM", 7)
255 class DoubleFault : public X86Abort
259 X86Abort("Double-Fault", "#DF", 8, 0)
263 class InvalidTSS : public X86Fault
266 InvalidTSS(uint32_t _errorCode) :
267 X86Fault("Invalid-TSS", "#TS", 10, _errorCode)
271 class SegmentNotPresent : public X86Fault
274 SegmentNotPresent(uint32_t _errorCode) :
275 X86Fault("Segment-Not-Present", "#NP", 11, _errorCode)
279 class StackFault : public X86Fault
282 StackFault(uint32_t _errorCode) :
283 X86Fault("Stack", "#SS", 12, _errorCode)
287 class GeneralProtection : public X86Fault
290 GeneralProtection(uint32_t _errorCode) :
291 X86Fault("General-Protection", "#GP", 13, _errorCode)
295 class PageFault : public X86Fault
298 BitUnion32(PageFaultErrorCode)
302 Bitfield<3> reserved;
304 EndBitUnion(PageFaultErrorCode)
309 PageFault(Addr _addr, uint32_t _errorCode) :
310 X86Fault("Page-Fault", "#PF", 14, _errorCode), addr(_addr)
313 PageFault(Addr _addr, bool present, BaseTLB::Mode mode,
314 bool user, bool reserved) :
315 X86Fault("Page-Fault", "#PF", 14, 0), addr(_addr)
317 PageFaultErrorCode code = 0;
318 code.present = present;
319 code.write = (mode == BaseTLB::Write);
321 code.reserved = reserved;
322 code.fetch = (mode == BaseTLB::Execute);
326 void invoke(ThreadContext * tc,
327 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
329 virtual std::string describe() const;
332 class X87FpExceptionPending : public X86Fault
335 X87FpExceptionPending() :
336 X86Fault("x87 Floating-Point Exception Pending", "#MF", 16)
340 class AlignmentCheck : public X86Fault
344 X86Fault("Alignment-Check", "#AC", 17, 0)
348 class MachineCheck : public X86Abort
352 X86Abort("Machine-Check", "#MC", 18)
356 class SIMDFloatingPointFault : public X86Fault
359 SIMDFloatingPointFault() :
360 X86Fault("SIMD Floating-Point", "#XF", 19)
364 class SecurityException : public X86FaultBase
367 SecurityException() :
368 X86FaultBase("Security Exception", "#SX", 30)
372 class ExternalInterrupt : public X86Interrupt
375 ExternalInterrupt(uint8_t _vector) :
376 X86Interrupt("External Interrupt", "#INTR", _vector)
380 class SystemManagementInterrupt : public X86Interrupt
383 SystemManagementInterrupt() :
384 X86Interrupt("System Management Interrupt", "#SMI", 0)
388 class InitInterrupt : public X86Interrupt
391 InitInterrupt(uint8_t _vector) :
392 X86Interrupt("INIT Interrupt", "#INIT", _vector)
395 void invoke(ThreadContext * tc,
396 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
399 class StartupInterrupt : public X86Interrupt
402 StartupInterrupt(uint8_t _vector) :
403 X86Interrupt("Startup Interrupt", "#SIPI", _vector)
406 void invoke(ThreadContext * tc,
407 StaticInstPtr inst = StaticInst::nullStaticInstPtr);
410 class SoftwareInterrupt : public X86Interrupt
413 SoftwareInterrupt(uint8_t _vector) :
414 X86Interrupt("Software Interrupt", "#INTR", _vector)
424 #endif // __ARCH_X86_FAULTS_HH__