remote_gdb.hh revision 10600
1/* 2 * Copyright 2014 Google, Inc. 3 * Copyright (c) 2007 The Hewlett-Packard Development Company 4 * All rights reserved. 5 * 6 * The license below extends only to copyright in the software and shall 7 * not be construed as granting a license to any other intellectual 8 * property including but not limited to intellectual property relating 9 * to a hardware implementation of the functionality of the software 10 * licensed hereunder. You may use the software subject to the license 11 * terms below provided that you ensure that this notice is replicated 12 * unmodified and in its entirety in all distributions of the software, 13 * modified or unmodified, in source code or in binary form. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions are 17 * met: redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer; 19 * redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution; 22 * neither the name of the copyright holders nor the names of its 23 * contributors may be used to endorse or promote products derived from 24 * this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 * 38 * Authors: Gabe Black 39 */ 40 41#ifndef __ARCH_X86_REMOTEGDB_HH__ 42#define __ARCH_X86_REMOTEGDB_HH__ 43 44#include <algorithm> 45 46#include "arch/x86/types.hh" 47#include "base/remote_gdb.hh" 48 49class System; 50class ThreadContext; 51 52namespace X86ISA 53{ 54class RemoteGDB : public BaseRemoteGDB 55{ 56 public: 57 enum 58 { 59 GDB32_EAX, 60 GDB32_ECX, 61 GDB32_EDX, 62 GDB32_EBX, 63 GDB32_ESP, 64 GDB32_EBP, 65 GDB32_ESI, 66 GDB32_EDI, 67 GDB32_EIP, 68 GDB32_EFLAGS, 69 GDB32_CS, 70 GDB32_SS, 71 GDB32_DS, 72 GDB32_ES, 73 GDB32_FS, 74 GDB32_GS, 75 76 GDB32_NUMREGS 77 }; 78 79 enum 80 { 81 GDB64_RAX, 82 GDB64_RBX, 83 GDB64_RCX, 84 GDB64_RDX, 85 GDB64_RSI, 86 GDB64_RDI, 87 GDB64_RBP, 88 GDB64_RSP, 89 GDB64_R8, 90 GDB64_R9, 91 GDB64_R10, 92 GDB64_R11, 93 GDB64_R12, 94 GDB64_R13, 95 GDB64_R14, 96 GDB64_R15, 97 GDB64_RIP, 98 // These indices index into the reg cache treated as an array of 32 99 // bit integers. The next index is one beyond the previous, and then 100 // scaled up from an index into an array of 64 bit integers. 101 GDB64_RFLAGS_32 = (GDB64_RIP + 1) * 2, 102 GDB64_CS_32, 103 GDB64_SS_32, 104 GDB64_DS_32, 105 GDB64_ES_32, 106 GDB64_FS_32, 107 GDB64_GS_32, 108 109 // Scale the end index count back down (rounded up) to be for an 110 // array of 64 bit integers. 111 GDB64_NUMREGS = (GDB64_GS_32 + 1) / 2 + 1 112 }; 113 114 RemoteGDB(System *system, ThreadContext *context); 115 116 bool acc(Addr addr, size_t len); 117 118 protected: 119 class SingleStepEvent : public Event 120 { 121 protected: 122 RemoteGDB *gdb; 123 124 public: 125 SingleStepEvent(RemoteGDB *g) : gdb(g) 126 {} 127 128 void process(); 129 }; 130 131 SingleStepEvent singleStepEvent; 132 133 void getregs(); 134 void setregs(); 135 136 void clearSingleStep(); 137 void setSingleStep(); 138 139 bool checkBpLen(size_t len) { return len == 1; } 140}; 141 142const int GDB_REG_BYTES = 143 std::max(RemoteGDB::GDB32_NUMREGS * sizeof(uint32_t), 144 RemoteGDB::GDB64_NUMREGS * sizeof(uint64_t)); 145 146} 147 148#endif // __ARCH_X86_REMOTEGDB_HH__ 149