utility.hh (8902:75b524b64c28) utility.hh (9759:8f1f1bdedf8c)
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
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.
13 *
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.
24 *
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.
36 *
37 * Authors: Gabe Black
38 */
39
40#ifndef __ARCH_X86_UTILITY_HH__
41#define __ARCH_X86_UTILITY_HH__
42
43#include "arch/x86/regs/misc.hh"
44#include "arch/x86/types.hh"
45#include "base/hashmap.hh"
46#include "base/misc.hh"
47#include "base/types.hh"
48#include "cpu/static_inst.hh"
49#include "cpu/thread_context.hh"
50#include "sim/full_system.hh"
51
52class ThreadContext;
53
54namespace X86ISA
55{
56
57 inline PCState
58 buildRetPC(const PCState &curPC, const PCState &callPC)
59 {
60 PCState retPC = callPC;
61 retPC.uEnd();
62 return retPC;
63 }
64
65 uint64_t
66 getArgument(ThreadContext *tc, int &number, uint16_t size, bool fp);
67
68 static inline bool
69 inUserMode(ThreadContext *tc)
70 {
71 if (!FullSystem) {
72 return true;
73 } else {
74 HandyM5Reg m5reg = tc->readMiscRegNoEffect(MISCREG_M5_REG);
75 return m5reg.cpl == 3;
76 }
77 }
78
79 /**
80 * Function to insure ISA semantics about 0 registers.
81 * @param tc The thread context.
82 */
83 template <class TC>
84 void zeroRegisters(TC *tc);
85
86 void initCPU(ThreadContext *tc, int cpuId);
87
88 void startupCPU(ThreadContext *tc, int cpuId);
89
90 void copyRegs(ThreadContext *src, ThreadContext *dest);
91
92 void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
93
94 void skipFunction(ThreadContext *tc);
95
96 inline void
97 advancePC(PCState &pc, const StaticInstPtr inst)
98 {
99 inst->advancePC(pc);
100 }
101
102 inline uint64_t
103 getExecutingAsid(ThreadContext *tc)
104 {
105 return 0;
106 }
107
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
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.
13 *
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.
24 *
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.
36 *
37 * Authors: Gabe Black
38 */
39
40#ifndef __ARCH_X86_UTILITY_HH__
41#define __ARCH_X86_UTILITY_HH__
42
43#include "arch/x86/regs/misc.hh"
44#include "arch/x86/types.hh"
45#include "base/hashmap.hh"
46#include "base/misc.hh"
47#include "base/types.hh"
48#include "cpu/static_inst.hh"
49#include "cpu/thread_context.hh"
50#include "sim/full_system.hh"
51
52class ThreadContext;
53
54namespace X86ISA
55{
56
57 inline PCState
58 buildRetPC(const PCState &curPC, const PCState &callPC)
59 {
60 PCState retPC = callPC;
61 retPC.uEnd();
62 return retPC;
63 }
64
65 uint64_t
66 getArgument(ThreadContext *tc, int &number, uint16_t size, bool fp);
67
68 static inline bool
69 inUserMode(ThreadContext *tc)
70 {
71 if (!FullSystem) {
72 return true;
73 } else {
74 HandyM5Reg m5reg = tc->readMiscRegNoEffect(MISCREG_M5_REG);
75 return m5reg.cpl == 3;
76 }
77 }
78
79 /**
80 * Function to insure ISA semantics about 0 registers.
81 * @param tc The thread context.
82 */
83 template <class TC>
84 void zeroRegisters(TC *tc);
85
86 void initCPU(ThreadContext *tc, int cpuId);
87
88 void startupCPU(ThreadContext *tc, int cpuId);
89
90 void copyRegs(ThreadContext *src, ThreadContext *dest);
91
92 void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
93
94 void skipFunction(ThreadContext *tc);
95
96 inline void
97 advancePC(PCState &pc, const StaticInstPtr inst)
98 {
99 inst->advancePC(pc);
100 }
101
102 inline uint64_t
103 getExecutingAsid(ThreadContext *tc)
104 {
105 return 0;
106 }
107
108
109 /**
110 * Reconstruct the rflags register from the internal gem5 register
111 * state.
112 *
113 * gem5 stores rflags in several different registers to avoid
114 * pipeline dependencies. In order to get the true rflags value,
115 * we can't simply read the value of MISCREG_RFLAGS. Instead, we
116 * need to read out various state from microcode registers and
117 * merge that with MISCREG_RFLAGS.
118 *
119 * @param tc Thread context to read rflags from.
120 * @return rflags as seen by the guest.
121 */
122 uint64_t getRFlags(ThreadContext *tc);
123
124 /**
125 * Set update the rflags register and internal gem5 state.
126 *
127 * @note This function does not update MISCREG_M5_REG. You might
128 * need to update this register by writing anything to
129 * MISCREG_M5_REG with side-effects.
130 *
131 * @see X86ISA::getRFlags()
132 *
133 * @param tc Thread context to update
134 * @param val New rflags value to store in TC
135 */
136 void setRFlags(ThreadContext *tc, uint64_t val);
108}
109
110#endif // __ARCH_X86_UTILITY_HH__
137}
138
139#endif // __ARCH_X86_UTILITY_HH__