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
|
#ifndef TRACEFILE_H
#define TRACEFILE_H 1
#include "tracepoint.h"
#include "target.h"
struct trace_file_writer;
/* Operations to write trace frames to a specific trace format. */
struct trace_frame_write_ops
{
/* Write a new trace frame. The tracepoint number of this trace
frame is TPNUM. */
void (*start) (struct trace_file_writer *self, uint16_t tpnum);
/* Write an 'R' block. Buffer BUF contains its contents and SIZE is
its size. */
void (*write_r_block) (struct trace_file_writer *self,
gdb_byte *buf, int32_t size);
/* Write an 'M' block, the header and memory contents respectively.
The header of 'M' block is composed of the start address and the
length of memory collection, and the memory contents contain
the collected memory contents in tracing.
For extremely large M block, GDB is unable to get its contents
and write them into trace file in one go, due to the limitation
of the remote target or the size of internal buffer, we split
the operation to 'M' block to two operations. */
/* Write the head of 'M' block. ADDR is the start address of
collected memory and LENGTH is the length of memory contents. */
void (*write_m_block_header) (struct trace_file_writer *self,
uint64_t addr, uint16_t length);
/* Write the memory contents of 'M' block. Buffer BUF contains
its contents and LENGTH is its length. This method can be called
multiple times to write large memory contents of a single 'M'
block. */
void (*write_m_block_memory) (struct trace_file_writer *self,
gdb_byte *buf, uint16_t length);
/* Write a 'V' block. NUM is the trace variable number and VAL is
the value of the trace variable. */
void (*write_v_block) (struct trace_file_writer *self, int32_t num,
uint64_t val);
/* The end of the trace frame. */
void (*end) (struct trace_file_writer *self);
};
/* Operations to write trace buffers to a specific trace format. */
struct trace_file_write_ops
{
/* Destructor. Releases everything from SELF (but not SELF
itself). */
void (*dtor) (struct trace_file_writer *self);
/* Save the data to file or directory NAME of desired format in
target side. Return true for success, otherwise return
false. */
int (*target_save) (struct trace_file_writer *self,
const char *name);
/* Write the trace buffers to file or directory NAME. */
void (*start) (struct trace_file_writer *self,
const char *name);
/* Write the trace header. */
void (*write_header) (struct trace_file_writer *self);
/* Write the type of block about registers. SIZE is the size of
all registers on the target. */
void (*write_regblock_type) (struct trace_file_writer *self,
int size);
/* Write trace status TS. */
void (*write_status) (struct trace_file_writer *self,
struct trace_status *ts);
/* Write the uploaded TSV. */
void (*write_uploaded_tsv) (struct trace_file_writer *self,
struct uploaded_tsv *tsv);
/* Write the uploaded tracepoint TP. */
void (*write_uploaded_tp) (struct trace_file_writer *self,
struct uploaded_tp *tp);
/* Write target description. */
void (*write_tdesc) (struct trace_file_writer *self);
/* Write to mark the end of the definition part. */
void (*write_definition_end) (struct trace_file_writer *self);
/* Write the data of trace buffer without parsing. The content is
in BUF and length is LEN. */
void (*write_trace_buffer) (struct trace_file_writer *self,
gdb_byte *buf, LONGEST len);
/* Operations to write trace frames. The user of this field is
responsible to parse the data of trace buffer. Either field
'write_trace_buffer' or field ' frame_ops' is NULL. */
const struct trace_frame_write_ops *frame_ops;
/* The end of writing trace buffers. */
void (*end) (struct trace_file_writer *self);
};
/* Trace file writer for a given format. */
struct trace_file_writer
{
const struct trace_file_write_ops *ops;
};
extern struct trace_file_writer *tfile_trace_file_writer_new (void);
/* Base class for tracefile related targets. */
class tracefile_target : public target_ops
{
public:
tracefile_target ();
int get_trace_status (trace_status *ts) override;
int has_all_memory () override;
int has_memory () override;
int has_stack () override;
int has_registers () override;
int thread_alive (ptid_t ptid) override;
};
extern void tracefile_fetch_registers (struct regcache *regcache, int regno);
#endif /* TRACEFILE_H */
|
