| 1 | /** @file
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| 2 | Transfer protocol definitions used by debug agent and host. It is only
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| 3 | intended to be used by Debug related module implementation.
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| 4 |
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| 5 | Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
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| 6 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 7 |
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| 8 | **/
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| 9 |
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| 10 | #ifndef __TRANSFER_PROTOCOL_H__
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| 11 | #define __TRANSFER_PROTOCOL_H__
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| 12 |
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| 13 | #include "ProcessorContext.h"
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| 14 |
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| 15 | //
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| 16 | // Current revision of transfer protocol
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| 17 | // 0.4: Packet compression and decompression.
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| 18 | //
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| 19 | #define DEBUG_AGENT_REVISION_03 ((0 << 16) | 03)
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| 20 | #define DEBUG_AGENT_REVISION_04 ((0 << 16) | 04)
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| 21 | #define DEBUG_AGENT_CAPABILITIES 0
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| 22 |
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| 23 | //
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| 24 | // Definitions for the (A)ttach command
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| 25 | //
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| 26 | #define DEBUG_STARTING_SYMBOL_ATTACH (0xFA)
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| 27 |
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| 28 | //
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| 29 | // Definition for starting symbol of a normal debug packet. Choose a non-ASCII to avoid conflict with other serial output.
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| 30 | //
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| 31 | #define DEBUG_STARTING_SYMBOL_NORMAL (0xFE)
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| 32 |
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| 33 | //
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| 34 | // Definition for starting symbol of a (C)ompressed debug packet. Choose a non-ASCII to avoid conflict with other serial output.
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| 35 | //
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| 36 | #define DEBUG_STARTING_SYMBOL_COMPRESS (0xFC)
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| 37 |
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| 38 | #pragma pack(1)
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| 39 |
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| 40 | //
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| 41 | // Definition for debug packet header for debug packets (not including attach command)
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| 42 | //
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| 43 | typedef struct {
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| 44 | UINT8 StartSymbol;
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| 45 | UINT8 Command;
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| 46 | UINT8 Length; // Length of Debug Packet including header and payload in byte
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| 47 | UINT8 SequenceNo;
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| 48 | UINT16 Crc;
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| 49 | } DEBUG_PACKET_HEADER;
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| 50 |
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| 51 | //
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| 52 | // Definition for Command field for debug packets
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| 53 | //
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| 54 | #define DEBUG_COMMAND_REQUEST (0 << 7)
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| 55 | #define DEBUG_COMMAND_RESPONSE (1 << 7)
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| 56 |
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| 57 | #define IS_REQUEST(x) (((x)->Command & DEBUG_COMMAND_RESPONSE) == 0)
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| 58 |
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| 59 | //
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| 60 | // HOST initiated commands
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| 61 | //
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| 62 | #define DEBUG_COMMAND_RESET (DEBUG_COMMAND_REQUEST | 0x00)
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| 63 | #define DEBUG_COMMAND_GO (DEBUG_COMMAND_REQUEST | 0x01)
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| 64 | #define DEBUG_COMMAND_BREAK_CAUSE (DEBUG_COMMAND_REQUEST | 0x02)
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| 65 | #define DEBUG_COMMAND_SET_HW_BREAKPOINT (DEBUG_COMMAND_REQUEST | 0x03)
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| 66 | #define DEBUG_COMMAND_CLEAR_HW_BREAKPOINT (DEBUG_COMMAND_REQUEST | 0x04)
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| 67 | #define DEBUG_COMMAND_SINGLE_STEPPING (DEBUG_COMMAND_REQUEST | 0x05)
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| 68 | #define DEBUG_COMMAND_SET_SW_BREAKPOINT (DEBUG_COMMAND_REQUEST | 0x06)
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| 69 | #define DEBUG_COMMAND_READ_MEMORY (DEBUG_COMMAND_REQUEST | 0x07)
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| 70 | #define DEBUG_COMMAND_WRITE_MEMORY (DEBUG_COMMAND_REQUEST | 0x08)
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| 71 | #define DEBUG_COMMAND_READ_IO (DEBUG_COMMAND_REQUEST | 0x09)
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| 72 | #define DEBUG_COMMAND_WRITE_IO (DEBUG_COMMAND_REQUEST | 0x0A)
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| 73 | #define DEBUG_COMMAND_READ_REGISTER (DEBUG_COMMAND_REQUEST | 0x0B)
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| 74 | #define DEBUG_COMMAND_WRITE_REGISTER (DEBUG_COMMAND_REQUEST | 0x0C)
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| 75 | #define DEBUG_COMMAND_READ_ALL_REGISTERS (DEBUG_COMMAND_REQUEST | 0x0D)
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| 76 | #define DEBUG_COMMAND_ARCH_MODE (DEBUG_COMMAND_REQUEST | 0x0E)
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| 77 | #define DEBUG_COMMAND_READ_MSR (DEBUG_COMMAND_REQUEST | 0x0F)
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| 78 | #define DEBUG_COMMAND_WRITE_MSR (DEBUG_COMMAND_REQUEST | 0x10)
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| 79 | #define DEBUG_COMMAND_SET_DEBUG_SETTING (DEBUG_COMMAND_REQUEST | 0x11)
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| 80 | #define DEBUG_COMMAND_GET_REVISION (DEBUG_COMMAND_REQUEST | 0x12)
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| 81 | #define DEBUG_COMMAND_GET_EXCEPTION (DEBUG_COMMAND_REQUEST | 0x13)
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| 82 | #define DEBUG_COMMAND_SET_VIEWPOINT (DEBUG_COMMAND_REQUEST | 0x14)
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| 83 | #define DEBUG_COMMAND_GET_VIEWPOINT (DEBUG_COMMAND_REQUEST | 0x15)
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| 84 | #define DEBUG_COMMAND_DETACH (DEBUG_COMMAND_REQUEST | 0x16)
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| 85 | #define DEBUG_COMMAND_CPUID (DEBUG_COMMAND_REQUEST | 0x17)
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| 86 | #define DEBUG_COMMAND_SEARCH_SIGNATURE (DEBUG_COMMAND_REQUEST | 0x18)
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| 87 | #define DEBUG_COMMAND_HALT (DEBUG_COMMAND_REQUEST | 0x19)
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| 88 |
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| 89 | //
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| 90 | // TARGET initiated commands
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| 91 | //
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| 92 | #define DEBUG_COMMAND_INIT_BREAK (DEBUG_COMMAND_REQUEST | 0x3F)
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| 93 | #define DEBUG_COMMAND_BREAK_POINT (DEBUG_COMMAND_REQUEST | 0x3E)
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| 94 | #define DEBUG_COMMAND_MEMORY_READY (DEBUG_COMMAND_REQUEST | 0x3D)
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| 95 | #define DEBUG_COMMAND_PRINT_MESSAGE (DEBUG_COMMAND_REQUEST | 0x3C)
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| 96 | #define DEBUG_COMMAND_ATTACH_BREAK (DEBUG_COMMAND_REQUEST | 0x3B)
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| 97 |
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| 98 | //
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| 99 | // Response commands
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| 100 | //
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| 101 | #define DEBUG_COMMAND_OK (DEBUG_COMMAND_RESPONSE | 0x00)
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| 102 | #define DEBUG_COMMAND_RESEND (DEBUG_COMMAND_RESPONSE | 0x01)
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| 103 | #define DEBUG_COMMAND_ABORT (DEBUG_COMMAND_RESPONSE | 0x02)
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| 104 | //
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| 105 | // The below 2 commands are used when transferring big data (like > ~250 bytes).
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| 106 | // The sequence is:
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| 107 | // HOST TARGET
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| 108 | // Request =>
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| 109 | // <= IN_PROGRESS with partial data
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| 110 | // CONTINUE =>
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| 111 | // (could have multiple IN_PROGRESS and CONTINUE interactions)
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| 112 | // <= OK with the last part of data
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| 113 | // OK (no data as ACK) =>
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| 114 | //
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| 115 | #define DEBUG_COMMAND_IN_PROGRESS (DEBUG_COMMAND_RESPONSE | 0x03)
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| 116 | #define DEBUG_COMMAND_CONTINUE (DEBUG_COMMAND_RESPONSE | 0x04)
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| 117 | //
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| 118 | // The below 2 commands are used to support deferred halt:
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| 119 | // TARGET returns HALT_DEFERRED when it receives a HALT request in inter-active mode.
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| 120 | // TARGET returns HALT_PROCESSED when it receives a GO request and has a pending HALT request.
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| 121 | //
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| 122 | #define DEBUG_COMMAND_HALT_DEFERRED (DEBUG_COMMAND_RESPONSE | 0x05)
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| 123 | #define DEBUG_COMMAND_HALT_PROCESSED (DEBUG_COMMAND_RESPONSE | 0x06)
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| 124 |
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| 125 | #define DEBUG_COMMAND_TIMEOUT (DEBUG_COMMAND_RESPONSE | 0x07)
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| 126 | #define DEBUG_COMMAND_NOT_SUPPORTED (DEBUG_COMMAND_RESPONSE | 0x0F)
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| 127 |
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| 128 | //
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| 129 | // Definition for data field for debug packets
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| 130 | //
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| 131 | #define DEBUG_DATA_UPPER_LIMIT 0xff // Upper limit for the data size, by the limit of the packet header definition.
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| 132 |
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| 133 | #define DEBUG_DATA_MAXIMUM_REAL_DATA (DEBUG_DATA_UPPER_LIMIT - sizeof (DEBUG_PACKET_HEADER))
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| 134 |
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| 135 | //
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| 136 | // Response data for DEBUG_COMMAND_BREAK_CAUSE
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| 137 | //
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| 138 | typedef struct {
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| 139 | UINT8 Cause;
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| 140 | UINT64 StopAddress;
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| 141 | } DEBUG_DATA_RESPONSE_BREAK_CAUSE;
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| 142 | //
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| 143 | // Break type definitions for DEBUG_DATA_BREAK_CAUSE
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| 144 | //
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| 145 | #define DEBUG_DATA_BREAK_CAUSE_UNKNOWN 0
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| 146 | #define DEBUG_DATA_BREAK_CAUSE_HW_BREAKPOINT 1
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| 147 | #define DEBUG_DATA_BREAK_CAUSE_STEPPING 2
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| 148 | #define DEBUG_DATA_BREAK_CAUSE_SW_BREAKPOINT 3
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| 149 | #define DEBUG_DATA_BREAK_CAUSE_USER_HALT 4
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| 150 | #define DEBUG_DATA_BREAK_CAUSE_IMAGE_LOAD 5
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| 151 | #define DEBUG_DATA_BREAK_CAUSE_IMAGE_UNLOAD 6
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| 152 | #define DEBUG_DATA_BREAK_CAUSE_SYSTEM_RESET 7
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| 153 | #define DEBUG_DATA_BREAK_CAUSE_EXCEPTION 8
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| 154 | #define DEBUG_DATA_BREAK_CAUSE_MEMORY_READY 9
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| 155 |
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| 156 | //
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| 157 | // Response data for DEBUG_COMMAND_ARCH_MODE, defined as SOFT_DEBUGGER_PROCESSOR_...
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| 158 | //
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| 159 | typedef struct {
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| 160 | UINT8 CpuMode;
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| 161 | } DEBUG_DATA_RESPONSE_ARCH_MODE;
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| 162 | //
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| 163 | // Cpu architecture definitions for DEBUG_DATA_RESPONSE_ARCH_MODE
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| 164 | //
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| 165 | #define DEBUG_DATA_BREAK_CPU_ARCH_IA16 0
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| 166 | #define DEBUG_DATA_BREAK_CPU_ARCH_IA32 1
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| 167 | #define DEBUG_DATA_BREAK_CPU_ARCH_X64 2
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| 168 |
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| 169 | typedef struct {
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| 170 | UINT8 Length : 2; // Refer to below DEBUG_DATA_BREAKPOINT_LENGTH_XX macros
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| 171 | UINT8 Access : 2; // Refer to below DEBUG_DATA_BREAKPOINT_ACCESS_XX macros
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| 172 | UINT8 Index : 2; // Index of debug register
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| 173 | UINT8 Reserved : 2;
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| 174 | } DEBUG_DATA_BREAKPOINT_TYPE;
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| 175 | #define DEBUG_DATA_BREAKPOINT_MEMORY_ACCESS (0x3)
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| 176 | #define DEBUG_DATA_BREAKPOINT_IO_ACCESS (0x2)
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| 177 | #define DEBUG_DATA_BREAKPOINT_MEMORY_WRITE (0x1)
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| 178 | #define DEBUG_DATA_BREAKPOINT_MEMORY_EXECUTE (0x0)
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| 179 | #define DEBUG_DATA_BREAKPOINT_LENGTH_32 (0x3)
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| 180 | #define DEBUG_DATA_BREAKPOINT_LENGTH_64 (0x2)
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| 181 | #define DEBUG_DATA_BREAKPOINT_LENGTH_16 (0x1)
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| 182 | #define DEBUG_DATA_BREAKPOINT_LENGTH_8 (0x0)
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| 183 |
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| 184 | //
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| 185 | // Request data for DEBUG_COMMAND_SET_HW_BREAKPOINT
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| 186 | //
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| 187 | typedef struct {
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| 188 | DEBUG_DATA_BREAKPOINT_TYPE Type;
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| 189 | UINT64 Address;
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| 190 | } DEBUG_DATA_SET_HW_BREAKPOINT;
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| 191 |
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| 192 | //
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| 193 | // Request data for DEBUG_COMMAND_CLEAR_HW_BREAKPOINT
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| 194 | //
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| 195 | typedef struct {
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| 196 | UINT8 IndexMask; // 0x0f will clear all hw breakpoints
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| 197 | } DEBUG_DATA_CLEAR_HW_BREAKPOINT;
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| 198 |
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| 199 | //
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| 200 | // Request and response data for DEBUG_COMMAND_SET_SW_BREAKPOINT
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| 201 | //
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| 202 | typedef struct {
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| 203 | UINT64 Address;
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| 204 | } DEBUG_DATA_SET_SW_BREAKPOINT;
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| 205 |
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| 206 | typedef struct {
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| 207 | UINT8 OriginalData;
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| 208 | } DEBUG_DATA_RESPONSE_SET_SW_BREAKPOINT;
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| 209 |
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| 210 | //
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| 211 | // Request data for DEBUG_COMMAND_READ_MEMORY
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| 212 | //
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| 213 | typedef struct {
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| 214 | UINT64 Address;
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| 215 | UINT8 Width;
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| 216 | UINT16 Count;
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| 217 | } DEBUG_DATA_READ_MEMORY;
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| 218 |
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| 219 | //
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| 220 | // Request data for DEBUG_COMMAND_WRITE_MEMORY
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| 221 | //
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| 222 | typedef struct {
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| 223 | UINT64 Address;
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| 224 | UINT8 Width;
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| 225 | UINT16 Count;
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| 226 | UINT8 Data[1]; // The actual length is (Width * Count)
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| 227 | } DEBUG_DATA_WRITE_MEMORY;
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| 228 |
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| 229 | //
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| 230 | // Request and response data for DEBUG_COMMAND_READ_IO
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| 231 | //
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| 232 | typedef struct {
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| 233 | UINT64 Port;
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| 234 | UINT8 Width;
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| 235 | } DEBUG_DATA_READ_IO;
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| 236 |
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| 237 | typedef struct {
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| 238 | UINT8 Data[1]; // The actual length depends on the packet header
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| 239 | } DEBUG_DATA_RESPONSE_READ_IO;
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| 240 |
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| 241 | //
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| 242 | // Request data for DEBUG_COMMAND_WRITE_IO
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| 243 | //
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| 244 | typedef struct {
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| 245 | UINT64 Port;
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| 246 | UINT8 Width;
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| 247 | UINT8 Data[1]; // The actual length is Width
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| 248 | } DEBUG_DATA_WRITE_IO;
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| 249 |
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| 250 | //
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| 251 | // Request data for DEBUG_COMMAND_READ_REGISTER
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| 252 | //
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| 253 | typedef struct {
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| 254 | UINT8 Index; // defined as SOFT_DEBUGGER_REGISTER_XX
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| 255 | } DEBUG_DATA_READ_REGISTER;
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| 256 |
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| 257 | //
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| 258 | // Request data for DEBUG_COMMAND_WRITE_REGISTER
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| 259 | //
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| 260 | typedef struct {
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| 261 | UINT8 Index; // defined as SOFT_DEBUGGER_REGISTER_XX
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| 262 | UINT8 Length;
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| 263 | UINT8 Data[1]; // The actual length is Length
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| 264 | } DEBUG_DATA_WRITE_REGISTER;
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| 265 |
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| 266 | //
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| 267 | // Request and response data for DEBUG_COMMAND_READ_MSR
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| 268 | //
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| 269 | typedef struct {
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| 270 | UINT32 Index;
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| 271 | } DEBUG_DATA_READ_MSR;
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| 272 |
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| 273 | typedef struct {
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| 274 | UINT64 Value;
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| 275 | } DEBUG_DATA_RESPONSE_READ_MSR;
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| 276 |
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| 277 | //
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| 278 | // Request data for DEBUG_COMMAND_WRITE_MSR
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| 279 | //
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| 280 | typedef struct {
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| 281 | UINT32 Index;
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| 282 | UINT64 Value;
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| 283 | } DEBUG_DATA_WRITE_MSR;
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| 284 |
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| 285 | //
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| 286 | // Response data for DEBUG_COMMAND_GET_REVISION
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| 287 | //
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| 288 | typedef struct {
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| 289 | UINT32 Revision;
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| 290 | UINT32 Capabilities;
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| 291 | } DEBUG_DATA_RESPONSE_GET_REVISION;
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| 292 |
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| 293 | //
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| 294 | // Response data for DEBUG_COMMAND_GET_EXCEPTION
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| 295 | //
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| 296 | typedef struct {
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| 297 | UINT8 ExceptionNum;
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| 298 | UINT32 ExceptionData;
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| 299 | } DEBUG_DATA_RESPONSE_GET_EXCEPTION;
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| 300 |
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| 301 | //
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| 302 | // Request data for DEBUG_DATA_SET_DEBUG_SETTING
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| 303 | //
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| 304 | typedef struct {
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| 305 | UINT8 Key;
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| 306 | UINT8 Value;
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| 307 | } DEBUG_DATA_SET_DEBUG_SETTING;
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| 308 | //
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| 309 | // Supported keys
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| 310 | //
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| 311 | #define DEBUG_AGENT_SETTING_SMM_ENTRY_BREAK 1
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| 312 | #define DEBUG_AGENT_SETTING_PRINT_ERROR_LEVEL 2
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| 313 | #define DEBUG_AGENT_SETTING_BOOT_SCRIPT_ENTRY_BREAK 3
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| 314 | //
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| 315 | // Bitmask of print error level for debug message
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| 316 | //
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| 317 | #define DEBUG_AGENT_ERROR BIT0
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| 318 | #define DEBUG_AGENT_WARNING BIT1
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| 319 | #define DEBUG_AGENT_INFO BIT2
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| 320 | #define DEBUG_AGENT_VERBOSE BIT3
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| 321 |
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| 322 | //
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| 323 | // Request data for DEBUG_COMMAND_SET_VIEWPOINT
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| 324 | //
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| 325 | typedef struct {
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| 326 | UINT32 ViewPoint; // The index of viewpoint will be set
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| 327 | } DEBUG_DATA_SET_VIEWPOINT;
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| 328 |
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| 329 | //
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| 330 | // Response data for DEBUG_COMMAND_GET_VIEWPOINT
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| 331 | //
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| 332 | typedef struct {
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| 333 | UINT32 ViewPoint; // The index of viewpoint will be returned
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| 334 | } DEBUG_DATA_RESPONSE_GET_VIEWPOINT;
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| 335 |
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| 336 | //
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| 337 | // Request and response data for DEBUG_COMMAND_CPUID
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| 338 | //
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| 339 | typedef struct {
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| 340 | UINT32 Eax; // The value of EAX prior to invoking the CPUID instruction
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| 341 | UINT32 Ecx; // The value of ECX prior to invoking the CPUID instruction
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| 342 | } DEBUG_DATA_CPUID;
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| 343 |
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| 344 | typedef struct {
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| 345 | UINT32 Eax; // The value of EAX returned by the CPUID instruction
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| 346 | UINT32 Ebx; // The value of EBX returned by the CPUID instruction
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| 347 | UINT32 Ecx; // The value of ECX returned by the CPUID instruction
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| 348 | UINT32 Edx; // The value of EDX returned by the CPUID instruction
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| 349 | } DEBUG_DATA_RESPONSE_CPUID;
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| 350 |
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| 351 | //
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| 352 | // Request and response data for DEBUG_COMMAND_SEARCH_SIGNATURE
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| 353 | //
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| 354 | typedef struct {
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| 355 | UINT64 Start;
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| 356 | UINT32 Count;
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| 357 | UINT32 Alignment;
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| 358 | BOOLEAN Positive; // TRUE to search in higher address memory
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| 359 | UINT8 DataLength;
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| 360 | UINT8 Data[1];
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| 361 | } DEBUG_DATA_SEARCH_SIGNATURE;
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| 362 |
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| 363 | typedef struct {
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| 364 | UINT64 Address; // -1 indicates not found
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| 365 | } DEBUG_DATA_RESPONSE_SEARCH_SIGNATURE;
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| 366 |
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| 367 | #pragma pack()
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| 368 |
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| 369 | #endif
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