thread_state.hh (2674:6d4afef73a20) thread_state.hh (2678:1f86b91dc3bb)
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef __CPU_O3_THREAD_STATE_HH__
30#define __CPU_O3_THREAD_STATE_HH__
31
32#include "arch/faults.hh"
33#include "arch/isa_traits.hh"
34#include "cpu/exec_context.hh"
35#include "cpu/thread_state.hh"
36
37class Event;
38class Process;
39
40#if FULL_SYSTEM
41class EndQuiesceEvent;
42class FunctionProfile;
43class ProfileNode;
44#else
45class FunctionalMemory;
46class Process;
47#endif
48
49/**
50 * Class that has various thread state, such as the status, the
51 * current instruction being processed, whether or not the thread has
52 * a trap pending or is being externally updated, the ExecContext
53 * proxy pointer, etc. It also handles anything related to a specific
54 * thread's process, such as syscalls and checking valid addresses.
55 */
56template <class Impl>
57struct O3ThreadState : public ThreadState {
58 typedef ExecContext::Status Status;
59 typedef typename Impl::FullCPU FullCPU;
60
61 /** Current status of the thread. */
62 Status _status;
63
64 /** Current instruction the thread is committing. Only set and
65 * used for DTB faults currently.
66 */
67 TheISA::MachInst inst;
68
69 private:
70 /** Pointer to the CPU. */
71 FullCPU *cpu;
72 public:
73 /** Whether or not the thread is currently in syscall mode, and
74 * thus able to be externally updated without squashing.
75 */
76 bool inSyscall;
77
78 /** Whether or not the thread is currently waiting on a trap, and
79 * thus able to be externally updated without squashing.
80 */
81 bool trapPending;
82
83#if FULL_SYSTEM
84 O3ThreadState(FullCPU *_cpu, int _thread_num, FunctionalMemory *_mem)
85 : ThreadState(-1, _thread_num, _mem),
86 inSyscall(0), trapPending(0)
87 { }
88#else
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef __CPU_O3_THREAD_STATE_HH__
30#define __CPU_O3_THREAD_STATE_HH__
31
32#include "arch/faults.hh"
33#include "arch/isa_traits.hh"
34#include "cpu/exec_context.hh"
35#include "cpu/thread_state.hh"
36
37class Event;
38class Process;
39
40#if FULL_SYSTEM
41class EndQuiesceEvent;
42class FunctionProfile;
43class ProfileNode;
44#else
45class FunctionalMemory;
46class Process;
47#endif
48
49/**
50 * Class that has various thread state, such as the status, the
51 * current instruction being processed, whether or not the thread has
52 * a trap pending or is being externally updated, the ExecContext
53 * proxy pointer, etc. It also handles anything related to a specific
54 * thread's process, such as syscalls and checking valid addresses.
55 */
56template <class Impl>
57struct O3ThreadState : public ThreadState {
58 typedef ExecContext::Status Status;
59 typedef typename Impl::FullCPU FullCPU;
60
61 /** Current status of the thread. */
62 Status _status;
63
64 /** Current instruction the thread is committing. Only set and
65 * used for DTB faults currently.
66 */
67 TheISA::MachInst inst;
68
69 private:
70 /** Pointer to the CPU. */
71 FullCPU *cpu;
72 public:
73 /** Whether or not the thread is currently in syscall mode, and
74 * thus able to be externally updated without squashing.
75 */
76 bool inSyscall;
77
78 /** Whether or not the thread is currently waiting on a trap, and
79 * thus able to be externally updated without squashing.
80 */
81 bool trapPending;
82
83#if FULL_SYSTEM
84 O3ThreadState(FullCPU *_cpu, int _thread_num, FunctionalMemory *_mem)
85 : ThreadState(-1, _thread_num, _mem),
86 inSyscall(0), trapPending(0)
87 { }
88#else
89 O3ThreadState(FullCPU *_cpu, int _thread_num, Process *_process, int _asid)
90 : ThreadState(-1, _thread_num, NULL, _process, _asid),
89 O3ThreadState(FullCPU *_cpu, int _thread_num, Process *_process, int _asid,
90 MemObject *mem)
91 : ThreadState(-1, _thread_num, mem, _process, _asid),
91 cpu(_cpu), inSyscall(0), trapPending(0)
92 { }
92 cpu(_cpu), inSyscall(0), trapPending(0)
93 { }
93
94 O3ThreadState(FullCPU *_cpu, int _thread_num, FunctionalMemory *_mem,
95 int _asid)
96 : ThreadState(-1, _thread_num, _mem, NULL, _asid),
97 cpu(_cpu), inSyscall(0), trapPending(0)
98 { }
99#endif
100
101 /** Pointer to the ExecContext of this thread. @todo: Don't call
102 this a proxy.*/
103 ExecContext *xcProxy;
104
105 /** Returns a pointer to the XC of this thread. */
106 ExecContext *getXCProxy() { return xcProxy; }
107
108 /** Returns the status of this thread. */
109 Status status() const { return _status; }
110
111 /** Sets the status of this thread. */
112 void setStatus(Status new_status) { _status = new_status; }
113
114 /** Sets the current instruction being committed. */
115 void setInst(TheISA::MachInst _inst) { inst = _inst; }
116
117 /** Reads the number of instructions functionally executed and
118 * committed.
119 */
120 Counter readFuncExeInst() { return funcExeInst; }
121
122 /** Sets the total number of instructions functionally executed
123 * and committed.
124 */
125 void setFuncExeInst(Counter new_val) { funcExeInst = new_val; }
126
127#if !FULL_SYSTEM
128 /** Handles the syscall. */
129 void syscall(int64_t callnum) { process->syscall(callnum, xcProxy); }
130#endif
131};
132
133#endif // __CPU_O3_THREAD_STATE_HH__
94#endif
95
96 /** Pointer to the ExecContext of this thread. @todo: Don't call
97 this a proxy.*/
98 ExecContext *xcProxy;
99
100 /** Returns a pointer to the XC of this thread. */
101 ExecContext *getXCProxy() { return xcProxy; }
102
103 /** Returns the status of this thread. */
104 Status status() const { return _status; }
105
106 /** Sets the status of this thread. */
107 void setStatus(Status new_status) { _status = new_status; }
108
109 /** Sets the current instruction being committed. */
110 void setInst(TheISA::MachInst _inst) { inst = _inst; }
111
112 /** Reads the number of instructions functionally executed and
113 * committed.
114 */
115 Counter readFuncExeInst() { return funcExeInst; }
116
117 /** Sets the total number of instructions functionally executed
118 * and committed.
119 */
120 void setFuncExeInst(Counter new_val) { funcExeInst = new_val; }
121
122#if !FULL_SYSTEM
123 /** Handles the syscall. */
124 void syscall(int64_t callnum) { process->syscall(callnum, xcProxy); }
125#endif
126};
127
128#endif // __CPU_O3_THREAD_STATE_HH__