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9b07e27f SE |
1 | /* |
2 | * jitdump.h: jitted code info encapsulation file format | |
3 | * | |
4 | * Adapted from OProfile GPLv2 support jidump.h: | |
5 | * Copyright 2007 OProfile authors | |
6 | * Jens Wilke | |
7 | * Daniel Hansel | |
8 | * Copyright IBM Corporation 2007 | |
9 | */ | |
10 | #ifndef JITDUMP_H | |
11 | #define JITDUMP_H | |
12 | ||
13 | #include <sys/time.h> | |
14 | #include <time.h> | |
15 | #include <stdint.h> | |
16 | ||
17 | /* JiTD */ | |
18 | #define JITHEADER_MAGIC 0x4A695444 | |
19 | #define JITHEADER_MAGIC_SW 0x4454694A | |
20 | ||
21 | #define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7) | |
0284fecd | 22 | #define ALIGN_8(x) (((x) + 7) & (~7)) |
9b07e27f SE |
23 | |
24 | #define JITHEADER_VERSION 1 | |
25 | ||
26 | enum jitdump_flags_bits { | |
2a28e230 | 27 | JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT, |
9b07e27f SE |
28 | JITDUMP_FLAGS_MAX_BIT, |
29 | }; | |
30 | ||
2a28e230 AH |
31 | #define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT) |
32 | ||
9b07e27f SE |
33 | #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \ |
34 | (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0) | |
35 | ||
36 | struct jitheader { | |
37 | uint32_t magic; /* characters "jItD" */ | |
38 | uint32_t version; /* header version */ | |
39 | uint32_t total_size; /* total size of header */ | |
40 | uint32_t elf_mach; /* elf mach target */ | |
41 | uint32_t pad1; /* reserved */ | |
42 | uint32_t pid; /* JIT process id */ | |
43 | uint64_t timestamp; /* timestamp */ | |
44 | uint64_t flags; /* flags */ | |
45 | }; | |
46 | ||
47 | enum jit_record_type { | |
48 | JIT_CODE_LOAD = 0, | |
49 | JIT_CODE_MOVE = 1, | |
50 | JIT_CODE_DEBUG_INFO = 2, | |
51 | JIT_CODE_CLOSE = 3, | |
0284fecd | 52 | JIT_CODE_UNWINDING_INFO = 4, |
9b07e27f SE |
53 | |
54 | JIT_CODE_MAX, | |
55 | }; | |
56 | ||
57 | /* record prefix (mandatory in each record) */ | |
58 | struct jr_prefix { | |
59 | uint32_t id; | |
60 | uint32_t total_size; | |
61 | uint64_t timestamp; | |
62 | }; | |
63 | ||
64 | struct jr_code_load { | |
65 | struct jr_prefix p; | |
66 | ||
67 | uint32_t pid; | |
68 | uint32_t tid; | |
69 | uint64_t vma; | |
70 | uint64_t code_addr; | |
71 | uint64_t code_size; | |
72 | uint64_t code_index; | |
73 | }; | |
74 | ||
75 | struct jr_code_close { | |
76 | struct jr_prefix p; | |
77 | }; | |
78 | ||
79 | struct jr_code_move { | |
80 | struct jr_prefix p; | |
81 | ||
82 | uint32_t pid; | |
83 | uint32_t tid; | |
84 | uint64_t vma; | |
85 | uint64_t old_code_addr; | |
86 | uint64_t new_code_addr; | |
87 | uint64_t code_size; | |
88 | uint64_t code_index; | |
89 | }; | |
90 | ||
91 | struct debug_entry { | |
92 | uint64_t addr; | |
93 | int lineno; /* source line number starting at 1 */ | |
94 | int discrim; /* column discriminator, 0 is default */ | |
95 | const char name[0]; /* null terminated filename, \xff\0 if same as previous entry */ | |
96 | }; | |
97 | ||
98 | struct jr_code_debug_info { | |
99 | struct jr_prefix p; | |
100 | ||
101 | uint64_t code_addr; | |
102 | uint64_t nr_entry; | |
103 | struct debug_entry entries[0]; | |
104 | }; | |
105 | ||
0284fecd SS |
106 | struct jr_code_unwinding_info { |
107 | struct jr_prefix p; | |
108 | ||
109 | uint64_t unwinding_size; | |
110 | uint64_t eh_frame_hdr_size; | |
111 | uint64_t mapped_size; | |
112 | const char unwinding_data[0]; | |
113 | }; | |
114 | ||
9b07e27f SE |
115 | union jr_entry { |
116 | struct jr_code_debug_info info; | |
117 | struct jr_code_close close; | |
118 | struct jr_code_load load; | |
119 | struct jr_code_move move; | |
120 | struct jr_prefix prefix; | |
0284fecd | 121 | struct jr_code_unwinding_info unwinding; |
9b07e27f SE |
122 | }; |
123 | ||
124 | static inline struct debug_entry * | |
125 | debug_entry_next(struct debug_entry *ent) | |
126 | { | |
127 | void *a = ent + 1; | |
128 | size_t l = strlen(ent->name) + 1; | |
129 | return a + l; | |
130 | } | |
131 | ||
132 | static inline char * | |
133 | debug_entry_file(struct debug_entry *ent) | |
134 | { | |
135 | void *a = ent + 1; | |
136 | return a; | |
137 | } | |
138 | ||
139 | #endif /* !JITDUMP_H */ |