aboutsummaryrefslogtreecommitdiff
path: root/AT91SAM7S256/armdebug/Debugger/debug_internals.h
blob: c7f5d16eae984b4ca01727010c922a9f18882f2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
/** @file debug_internals.h
 *  @brief Shared C/ASM header file for debugger internal constants
 *
 */

/* Copyright (C) 2007-2011 the NxOS developers
 *
 * Module Developed by: TC Wan <tcwan@cs.usm.my>
 *
 * See AUTHORS for a full list of the developers.
 *
 * See COPYING for redistribution license
 *
 */

#ifndef __DEBUG_INTERNALS_H__
#define __DEBUG_INTERNALS_H__

#include "_c_arm_macros.h"


/** @addtogroup debugger */
/*@{*/


/* Declarations go here. */
/** @name Debug Message Constants.
 *
 * Debug Message Values
 */
/*@{*/

/*
 * USB Buffer Sizes:    Ctrl    Intr    Iso     Bulk
 * Full Speed Device    64      64      1023    64
 * High Speed Device    64      1024    1024    512
 */

#define USB_BUFSIZE     64                                      /* USB Buffer size for AT91SAM7S */

#define NXT_MSG_TELEGRAMTYPE_OFFSET     0                       /* NXT Direct Command/Response Header */
#define NXT_MSG_SEGNUM_OFFSET           1
#define NXT_MSG_TELEGRAMSIZE_OFFSET     2

#define NXT_GDBMSG_TELEGRAMTYPE            0x8d                 /* GDB debugger specific, no Response required */

#define NXT_GDBMSG_START                3                       /* Offset into USB Telegram buffer */

#define MSG_NUMSEGMENTS  		3                       /* For packet transfers */
#define MSG_SEGMENTSIZE (USB_BUFSIZE - NXT_GDBMSG_START)        /* 61 bytes per segment */
#define MSGBUF_SIZE     (MSG_SEGMENTSIZE*MSG_NUMSEGMENTS)       /* Debug Message Buffer Size, 61 x 3 = 183 chars = ~80 bytes of actual data */
#define MSGBUF_CHKSUMOFFSET             3                       /* to be subtracted from message length */
#define MSGBUF_IN_OVERHEADLEN		5			/* For calculating max message data length (exclude ASCIIZ char) */
#define MSGBUF_OUT_OVERHEADLEN		5			/* For calculating max message data length (exclude ASCIIZ char) */

#define MSGBUF_CTRLC     0x03                                   /* For Out of Band Signaling: not implemented yet */
#define MSGBUF_STARTCHAR '$'
#define MSGBUF_ACKCHAR   '+'
#define MSGBUF_NAKCHAR   '-'
#define MSGBUF_ERRCHAR   'E'
#define MSGBUF_SIGCHAR   'S'
#define MSGBUF_SETCHAR   '='
#define MSGBUF_CHKSUMCHAR '#'
#define MSGBUF_SEPCHAR   ','
#define MSGBUF_ARGCHAR   ':'
#define MSGBUF_MSGERROR  -1
/*@}*/

/** @name Debug Command Lookup Constants.
 *
 * Debug Command Lookup
 */
/*@{*/

#define CMDINDEX_OUTOFRANGE -1
/*@}*/

/** @name Debug Register Command Constants.
 *
 * Debug Register Command
 */
/*@{*/
#define CMD_REG_NUMREGS             17
#define CMD_REG_GETONE_MINPARAMLEN  1
#define CMD_REG_GETONE_MAXPARAMLEN  2
#define CMD_REG_GETALL_PARAMLEN     0
#define CMD_REG_REGPARAMLEN         8   /* 32-bit ASCII Hex Value */
#define CMD_REG_SETONE_MINPARAMLEN     (2 + CMD_REG_REGPARAMLEN)
#define CMD_REG_SETONE_MAXPARAMLEN     (3 + CMD_REG_REGPARAMLEN)
#define CMD_REG_SETALL_PARAMLEN     (CMD_REG_NUMREGS*CMD_REG_REGPARAMLEN)
#define CMD_KILL_PARAMLEN     		0
#define CMD_DETACH_PARAMLEN    		0

/*@}*/

/** @name Debug Memory Command Constants.
 *
 * Debug Memory Command
 * FIXME: These limits are not enforced by the GDB client, it truncates addresses and lengths to remove leading '0's
 *        The PARAMLEN constants would probably be removed
 */
/*@{*/
#define CMD_NUMITEMS_PARAMLEN		4	/* 16-bit ASCII Hex Value */
#define CMD_MEM_READ_PARAMLEN		(CMD_REG_REGPARAMLEN + CMD_NUMITEMS_PARAMLEN + 1)	/* Address length is equivalent to reg param len */
#define CMD_MEM_WRITE_MINPARAMLEN	(CMD_REG_REGPARAMLEN + CMD_NUMITEMS_PARAMLEN + 2)	/* Address length is equivalent to reg param len */
#define CMD_MEM_SEPCHAR_OFFSET		CMD_REG_REGPARAMLEN	/* Address length is equivalent to reg param len */
#define CMD_MEM_MAXOUTBUFLEN		(MSGBUF_SIZE - MSGBUF_OUT_OVERHEADLEN)
#define CMD_MEM_MAXREADBYTES		(CMD_MEM_MAXOUTBUFLEN/2)
#define CMD_MEM_MAXINBUFLEN			(MSGBUF_SIZE - MSGBUF_IN_OVERHEADLEN)
#define CMD_MEM_MAXWRITEBYTES		((CMD_MEM_MAXINBUFLEN - CMD_MEM_WRITE_MINPARAMLEN)/2)
/*@}*/

/** @name Debug Continue and Step Command Constants.
 *
 * Debug Continue and Step Command
 */
/*@{*/
#define CMD_CONTINUE_MINPARAMLEN    0
#define CMD_STEP_MINPARAMLEN        0
/*@}*/



/** @name Debug Breakpoint Command Constants.
 *
 * Debug Breakpoint Command
 */
/*@{*/

#define CMD_BKPT_INSERT_MINPARAMLEN     5
#define CMD_BKPT_REMOVE_MINPARAMLEN     5


#define CMD_BKPT_TYPE_BREAK_MEMORY  0
#define CMD_BKPT_TYPE_BREAK_HARD    1   /* Not supported */
#define CMD_BKPT_TYPE_WATCH_WRITE   2   /* Not supported (yet) */
#define CMD_BKPT_TYPE_WATCH_READ    3   /* Not supported (yet) */
#define CMD_BKPT_TYPE_WATCH_ACCESS  4   /* Not supported (yet) */

#define CMD_BKPT_KIND_THUMB         2
#define CMD_BKPT_KIND_THUMB2        3   /* Not supported */
#define CMD_BKPT_KIND_ARM           4

#define CMD_BKPT_NOTFOUND           -1

/*@}*/

/** @name Debug Stack Constants.
 *
 * Debug Stack Manipulation Values
 */
/*@{*/
#define DBGSTACK_NEXTINSTR_INDEX 0                /* Next Instruction Address is at index 0 from bottom of Debug Stack */
#define DBGSTACK_USERCPSR_INDEX 1                /* User CPSR (SPSR_UNDEF) is at index 1 from bottom of Debug Stack */
#define DBGSTACK_USERREG_INDEX  2                /* R0 starts at index 2 from bottom of Debug Stack */
#define DBGSTACK_USERSP_INDEX   (DBGSTACK_USERREG_INDEX + REG_SP)     /* SP is R13 */
#define DBGSTACK_USERLR_INDEX   (DBGSTACK_USERREG_INDEX + REG_LR)     /* LR is R14 */
#define DBGSTACK_USERPC_INDEX   (DBGSTACK_USERREG_INDEX + REG_PC)     /* PC is R15 */
/*@}*/


/** @name Exception Handler Vector Definitions.
 *
 * Exception Handler Vectors.
 */
/*@{*/

#define RESET_VECTOR	0x00000000
#define UNDEF_VECTOR	0x00000004
#define SVC_VECTOR	    0x00000008
#define PABRT_VECTOR	0x0000000C
#define DABRT_VECTOR	0x00000010
#define RESERVED_VECTOR 0x00000014
#define IRQ_VECTOR		0x00000018
#define FIQ_VECTOR		0x0000001C


/*@}*/


/** @name Bitmask Definitions.
 *
 * Various Bitmasks used for data manipulation.
 */
/*@{*/
#define BKPT_STATE_THUMB_FLAG	0x01             /* Flag Thumb Breakpoint */
#define ASCII_LOWER2UPPER_MASK	0x20             /* ASCII Conversion bitmask */
#define NIBBLE0	0x0000000F                       /* Nibble 0 word(3:0) */
#define NIBBLE1	0x000000F0                       /* Nibble 1 word(7:4) */
#define NIBBLE2	0x00000F00                       /* Nibble 2 word(11:8) */
#define NIBBLE3	0x0000F000                       /* Nibble 3 word(15:12) */
#define NIBBLE4	0x000F0000                       /* Nibble 4 word(19:16) */
#define NIBBLE5	0x00F00000                       /* Nibble 5 word(23:20) */
#define NIBBLE6	0x0F000000                       /* Nibble 6 word(27:24) */
#define NIBBLE7	0xF0000000                       /* Nibble 7 word(31:28) */
#define BYTE0	0x000000FF                       /* Byte 0 word(7:0) */
#define BYTE1	0x0000FF00                       /* Byte 1 word(15:8) */
#define BYTE2	0x00FF0000                       /* Byte 2 word(23:16) */
#define BYTE3	0xFF000000                       /* Byte 3 word(31:24) */
#define HLFWRD0	0x0000FFFF                       /* Halfword 0 word(15:0) */
#define HLFWRD1	0xFFFF0000                       /* Halfword 0 word(31:16) */
/*@}*/

/** @name CPSR Bit Definitions.
 *
 * Various Bit definitions for accessing the CPSR register.
 */
/*@{*/
#define CPSR_THUMB      0x00000020
#define CPSR_FIQ        0x00000040
#define CPSR_IRQ        0x00000080
#define CPSR_MODE       0x0000001F
#define CPSR_COND		0xF0000000

/* ARM Exception Modes */
#define MODE_USR 0x10                   /* User mode */
#define MODE_FIQ 0x11                   /* FIQ mode */
#define MODE_IRQ 0x12                   /* IRQ mode */
#define MODE_SVC 0x13                   /* Supervisor mode */
#define MODE_ABT 0x17                   /* Abort mode */
#define MODE_UND 0x1B                   /* Undefined mode */
#define MODE_SYS 0x1F                   /* System mode */

/* Condition Flags
 * b31 b30 b29 b28
 *  N   Z   C   V
 */
#define CPSR_NFLAG		0x80000000
#define CPSR_ZFLAG		0x40000000
#define CPSR_CFLAG		0x20000000
#define CPSR_VFLAG		0x10000000

/*@}*/

/** Debugger State Enums
 *
 * Debugger State.
 * The enums must be consecutive, starting from 0
 */
ENUM_BEGIN
ENUM_VALASSIGN(DBG_RESET, 0)  /**< Initial State. */
ENUM_VAL(DBG_INIT)            /**< Debugger Initialized. */
ENUM_VAL(DBG_CONFIGURED)        /**< Debugger has been configured by GDB Server */
ENUM_END(dbg_state_t)

/** Breakpoint Type Enums
 *
 * Breakpoint Type.
 * The enums must be consecutive, starting from 0
 */
ENUM_BEGIN
ENUM_VALASSIGN(DBG_AUTO_BKPT,0)         /**< Auto Breakpoint (Instruction resume after breakpoint). */
ENUM_VAL(DBG_MANUAL_BKPT_ARM)           /**< Manual ARM Breakpoint. */
ENUM_VAL(DBG_NORMAL_BKPT_ARM)           /**< Normal ARM Breakpoint (Single Step, Normal). */
ENUM_VAL(DBG_MANUAL_BKPT_THUMB)         /**< Manual Thumb Breakpoint. */
ENUM_VAL(DBG_NORMAL_BKPT_THUMB)         /**< Normal Thumb Breakpoint (Single Step, Normal). */
ENUM_END(bkpt_type_t)

/** Debugger Message Error Enums
 *
 * Debugger Error Message Enums.
 * The enums must be consecutive, starting from 1
 */
/* FIXME: Need to validate against the ecos-generic-stub.c Error enums */
ENUM_BEGIN
ENUM_VALASSIGN(MSG_ERRIMPL, 0)    /**< Stub (not implemented) Error. */
ENUM_VAL(MSG_ERRINLENGTH)      	  /**< Message Write Length Error. */
ENUM_VAL(MSG_ERROUTLENGTH)        /**< Message Read Length Error. */
ENUM_VAL(MSG_ERRFORMAT)           /**< Message Format Error. */
ENUM_VAL(MSG_UNKNOWNCMD)          /**< Unrecognized Command Error. */
ENUM_VAL(MSG_UNKNOWNPARAM)        /**< Unrecognized Parameter Error. */
ENUM_VAL(MSG_UNKNOWNBRKPT)        /**< Unrecognized Breakpoint Error. */
ENUM_END(dbg_msg_errno)

/** Register Enums
 *
 * Register Enums.
 * Refer to eCOS's arm_stub.h for enum values
 */
ENUM_BEGIN
ENUM_VALASSIGN(REG_R0, 0)     /**< User Reg R0 */
ENUM_VAL(REG_R1)              /**< User Reg R1 */
ENUM_VAL(REG_R2)              /**< User Reg R2 */
ENUM_VAL(REG_R3)              /**< User Reg R3 */
ENUM_VAL(REG_R4)              /**< User Reg R4 */
ENUM_VAL(REG_R5)              /**< User Reg R5 */
ENUM_VAL(REG_R6)              /**< User Reg R6 */
ENUM_VAL(REG_R7)              /**< User Reg R7 */
ENUM_VAL(REG_R8)              /**< User Reg R8 */
ENUM_VAL(REG_R9)              /**< User Reg R9 */
ENUM_VAL(REG_R10)             /**< User Reg R10 */
ENUM_VAL(REG_R11)             /**< User Reg R11 */
ENUM_VAL(REG_R12)             /**< User Reg R12 */
ENUM_VAL(REG_SP)              /**< Previous Mode SP (R13) */
ENUM_VAL(REG_LR)              /**< Previous Mode LR (R14) */
ENUM_VAL(REG_PC)              /**< Program Counter (R15) */
ENUM_VALASSIGN(REG_FPSCR, 24) /**< Previous Mode FPSCR (dummy) */
ENUM_VAL(REG_CPSR)            /**< Previous Mode CPSR */

ENUM_END(register_enum_t)


#endif /* __DEBUG_INTERNALS_H__ */