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Ali Saidi081b6fe2009-07-27 00:53:39 -07001/*
Ali Saidid3a519e2010-06-02 12:58:17 -05002 * Copyright (c) 2010 ARM Limited
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 *
Ali Saidi081b6fe2009-07-27 00:53:39 -070014 * Copyright (c) 2009 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Ali Saidi
41 * Gabe Black
42 */
43
44#ifndef TRACECHILD_ARM_HH
45#define TRACECHILD_ARM_HH
46
Nathan Binkert39a05562011-04-15 10:44:06 -070047#include <sys/ptrace.h>
48#include <sys/user.h>
49
Ali Saidi081b6fe2009-07-27 00:53:39 -070050#include <cassert>
51#include <string>
Ali Saidi081b6fe2009-07-27 00:53:39 -070052
Nathan Binkert39a05562011-04-15 10:44:06 -070053#include "base/tracechild.hh"
Ali Saidi081b6fe2009-07-27 00:53:39 -070054
55class ARMTraceChild : public TraceChild
56{
57 public:
58 enum RegNum
59 {
60 // r0 - r3 argument, temp, caller save
61 // r4 - r10 callee save
62 // r11 - FP
63 // r12 - temp
64 // r13 - stack
65 // r14 - link
66 // r15 - pc
67 R0, R1, R2, R3, R4, R5, R6, R7,
68 R8, R9, R10, FP, R12, SP, LR, PC,
69 CPSR,
Ali Saidi48f7fda2011-05-04 20:38:26 -050070 F0, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, F13, F14, F15,
71 F16, F17, F18, F19, F20, F21, F22, F23, F24, F25, F26, F27, F28, F29,
72 F30, F31, FPSCR,
Ali Saidi081b6fe2009-07-27 00:53:39 -070073 numregs
74 };
Ali Saidi48f7fda2011-05-04 20:38:26 -050075
76 struct vfp_regs {
77 uint64_t fpregs[32];
78 uint32_t fpscr;
79 };
80
Ali Saidi081b6fe2009-07-27 00:53:39 -070081 private:
Ali Saidi081b6fe2009-07-27 00:53:39 -070082 uint32_t getRegs(user_regs& myregs, int num);
Ali Saidi48f7fda2011-05-04 20:38:26 -050083 uint64_t getFpRegs(vfp_regs &myfpregs, int num);
84
Ali Saidi081b6fe2009-07-27 00:53:39 -070085 user_regs regs;
86 user_regs oldregs;
Ali Saidi48f7fda2011-05-04 20:38:26 -050087
88 vfp_regs fpregs;
89 vfp_regs oldfpregs;
90
Ali Saidi081b6fe2009-07-27 00:53:39 -070091 bool regDiffSinceUpdate[numregs];
Ali Saidid3a519e2010-06-02 12:58:17 -050092 bool foundMvn;
93
Ali Saidi081b6fe2009-07-27 00:53:39 -070094 protected:
95 bool update(int pid);
Ali Saidid3a519e2010-06-02 12:58:17 -050096
Ali Saidi081b6fe2009-07-27 00:53:39 -070097 public:
98 ARMTraceChild();
99 bool sendState(int socket);
100
Ali Saidi081b6fe2009-07-27 00:53:39 -0700101 int64_t getRegVal(int num);
102 int64_t getOldRegVal(int num);
Ali Saidid3a519e2010-06-02 12:58:17 -0500103
Ali Saidi081b6fe2009-07-27 00:53:39 -0700104 bool step();
105
Gabe Black3df970f2011-03-02 22:53:10 -0800106 uint64_t
107 getPC()
Ali Saidi081b6fe2009-07-27 00:53:39 -0700108 {
Gabe Black3df970f2011-03-02 22:53:10 -0800109 return getRegVal(PC);
Ali Saidi081b6fe2009-07-27 00:53:39 -0700110 }
111
Gabe Black3df970f2011-03-02 22:53:10 -0800112 uint64_t
113 getSP()
Ali Saidi081b6fe2009-07-27 00:53:39 -0700114 {
Gabe Black3df970f2011-03-02 22:53:10 -0800115 return getRegVal(SP);
Ali Saidi081b6fe2009-07-27 00:53:39 -0700116 }
117
Ali Saidi081b6fe2009-07-27 00:53:39 -0700118 std::ostream & outputStartState(std::ostream & os);
119
120};
121
122#endif
123