1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * jitdump.h: jitted code info encapsulation f 2 * jitdump.h: jitted code info encapsulation file format
4 * 3 *
5 * Adapted from OProfile GPLv2 support jidump. 4 * Adapted from OProfile GPLv2 support jidump.h:
6 * Copyright 2007 OProfile authors 5 * Copyright 2007 OProfile authors
7 * Jens Wilke 6 * Jens Wilke
8 * Daniel Hansel 7 * Daniel Hansel
9 * Copyright IBM Corporation 2007 8 * Copyright IBM Corporation 2007
10 */ 9 */
11 #ifndef JITDUMP_H 10 #ifndef JITDUMP_H
12 #define JITDUMP_H 11 #define JITDUMP_H
13 12
14 #include <sys/time.h> 13 #include <sys/time.h>
15 #include <time.h> 14 #include <time.h>
16 #include <stdint.h> 15 #include <stdint.h>
17 16
18 /* JiTD */ 17 /* JiTD */
19 #define JITHEADER_MAGIC 0x4A695444 18 #define JITHEADER_MAGIC 0x4A695444
20 #define JITHEADER_MAGIC_SW 0x4454694A 19 #define JITHEADER_MAGIC_SW 0x4454694A
21 20
22 #define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 21 #define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7)
23 #define ALIGN_8(x) (((x) + 7) & (~7)) 22 #define ALIGN_8(x) (((x) + 7) & (~7))
24 23
25 #define JITHEADER_VERSION 1 24 #define JITHEADER_VERSION 1
26 25
27 enum jitdump_flags_bits { 26 enum jitdump_flags_bits {
28 JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT, 27 JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT,
29 JITDUMP_FLAGS_MAX_BIT, 28 JITDUMP_FLAGS_MAX_BIT,
30 }; 29 };
31 30
32 #define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL 31 #define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT)
33 32
34 #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_ 33 #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \
35 (~((1ULL << JI 34 (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0)
36 35
37 struct jitheader { 36 struct jitheader {
38 uint32_t magic; /* characters 37 uint32_t magic; /* characters "jItD" */
39 uint32_t version; /* header vers 38 uint32_t version; /* header version */
40 uint32_t total_size; /* total size 39 uint32_t total_size; /* total size of header */
41 uint32_t elf_mach; /* elf mach ta 40 uint32_t elf_mach; /* elf mach target */
42 uint32_t pad1; /* reserved */ 41 uint32_t pad1; /* reserved */
43 uint32_t pid; /* JIT process 42 uint32_t pid; /* JIT process id */
44 uint64_t timestamp; /* timestamp * 43 uint64_t timestamp; /* timestamp */
45 uint64_t flags; /* flags */ 44 uint64_t flags; /* flags */
46 }; 45 };
47 46
48 enum jit_record_type { 47 enum jit_record_type {
49 JIT_CODE_LOAD = 0, 48 JIT_CODE_LOAD = 0,
50 JIT_CODE_MOVE = 1, 49 JIT_CODE_MOVE = 1,
51 JIT_CODE_DEBUG_INFO = 2, 50 JIT_CODE_DEBUG_INFO = 2,
52 JIT_CODE_CLOSE = 3, 51 JIT_CODE_CLOSE = 3,
53 JIT_CODE_UNWINDING_INFO = 4, 52 JIT_CODE_UNWINDING_INFO = 4,
54 53
55 JIT_CODE_MAX, 54 JIT_CODE_MAX,
56 }; 55 };
57 56
58 /* record prefix (mandatory in each record) */ 57 /* record prefix (mandatory in each record) */
59 struct jr_prefix { 58 struct jr_prefix {
60 uint32_t id; 59 uint32_t id;
61 uint32_t total_size; 60 uint32_t total_size;
62 uint64_t timestamp; 61 uint64_t timestamp;
63 }; 62 };
64 63
65 struct jr_code_load { 64 struct jr_code_load {
66 struct jr_prefix p; 65 struct jr_prefix p;
67 66
68 uint32_t pid; 67 uint32_t pid;
69 uint32_t tid; 68 uint32_t tid;
70 uint64_t vma; 69 uint64_t vma;
71 uint64_t code_addr; 70 uint64_t code_addr;
72 uint64_t code_size; 71 uint64_t code_size;
73 uint64_t code_index; 72 uint64_t code_index;
74 }; 73 };
75 74
76 struct jr_code_close { 75 struct jr_code_close {
77 struct jr_prefix p; 76 struct jr_prefix p;
78 }; 77 };
79 78
80 struct jr_code_move { 79 struct jr_code_move {
81 struct jr_prefix p; 80 struct jr_prefix p;
82 81
83 uint32_t pid; 82 uint32_t pid;
84 uint32_t tid; 83 uint32_t tid;
85 uint64_t vma; 84 uint64_t vma;
86 uint64_t old_code_addr; 85 uint64_t old_code_addr;
87 uint64_t new_code_addr; 86 uint64_t new_code_addr;
88 uint64_t code_size; 87 uint64_t code_size;
89 uint64_t code_index; 88 uint64_t code_index;
90 }; 89 };
91 90
92 struct debug_entry { 91 struct debug_entry {
93 uint64_t addr; 92 uint64_t addr;
94 int lineno; /* source line num 93 int lineno; /* source line number starting at 1 */
95 int discrim; /* column discrimi 94 int discrim; /* column discriminator, 0 is default */
96 const char name[]; /* null terminated !! 95 const char name[0]; /* null terminated filename, \xff\0 if same as previous entry */
97 }; 96 };
98 97
99 struct jr_code_debug_info { 98 struct jr_code_debug_info {
100 struct jr_prefix p; 99 struct jr_prefix p;
101 100
102 uint64_t code_addr; 101 uint64_t code_addr;
103 uint64_t nr_entry; 102 uint64_t nr_entry;
104 struct debug_entry entries[]; !! 103 struct debug_entry entries[0];
105 }; 104 };
106 105
107 struct jr_code_unwinding_info { 106 struct jr_code_unwinding_info {
108 struct jr_prefix p; 107 struct jr_prefix p;
109 108
110 uint64_t unwinding_size; 109 uint64_t unwinding_size;
111 uint64_t eh_frame_hdr_size; 110 uint64_t eh_frame_hdr_size;
112 uint64_t mapped_size; 111 uint64_t mapped_size;
113 const char unwinding_data[]; !! 112 const char unwinding_data[0];
114 }; 113 };
115 114
116 union jr_entry { 115 union jr_entry {
117 struct jr_code_debug_info info; 116 struct jr_code_debug_info info;
118 struct jr_code_close close; 117 struct jr_code_close close;
119 struct jr_code_load load; 118 struct jr_code_load load;
120 struct jr_code_move move; 119 struct jr_code_move move;
121 struct jr_prefix prefix; 120 struct jr_prefix prefix;
122 struct jr_code_unwinding_info unwindin 121 struct jr_code_unwinding_info unwinding;
123 }; 122 };
124 123
125 static inline struct debug_entry * 124 static inline struct debug_entry *
126 debug_entry_next(struct debug_entry *ent) 125 debug_entry_next(struct debug_entry *ent)
127 { 126 {
128 void *a = ent + 1; 127 void *a = ent + 1;
129 size_t l = strlen(ent->name) + 1; 128 size_t l = strlen(ent->name) + 1;
130 return a + l; 129 return a + l;
131 } 130 }
132 131
133 static inline char * 132 static inline char *
134 debug_entry_file(struct debug_entry *ent) 133 debug_entry_file(struct debug_entry *ent)
135 { 134 {
136 void *a = ent + 1; 135 void *a = ent + 1;
137 return a; 136 return a;
138 } 137 }
139 138
140 #endif /* !JITDUMP_H */ 139 #endif /* !JITDUMP_H */
141 140
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