2 * jitdump.h: jitted code info encapsulation file format
4 * Adapted from OProfile GPLv2 support jidump.h:
5 * Copyright 2007 OProfile authors
8 * Copyright IBM Corporation 2007
18 #define JITHEADER_MAGIC 0x4A695444
19 #define JITHEADER_MAGIC_SW 0x4454694A
21 #define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7)
22 #define ALIGN_8(x) (((x) + 7) & (~7))
24 #define JITHEADER_VERSION 1
26 enum jitdump_flags_bits {
27 JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT,
28 JITDUMP_FLAGS_MAX_BIT,
31 #define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT)
33 #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \
34 (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0)
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 */
47 enum jit_record_type {
50 JIT_CODE_DEBUG_INFO = 2,
52 JIT_CODE_UNWINDING_INFO = 4,
57 /* record prefix (mandatory in each record) */
75 struct jr_code_close {
85 uint64_t old_code_addr;
86 uint64_t new_code_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 */
98 struct jr_code_debug_info {
103 struct debug_entry entries[0];
106 struct jr_code_unwinding_info {
109 uint64_t unwinding_size;
110 uint64_t eh_frame_hdr_size;
111 uint64_t mapped_size;
112 const char unwinding_data[0];
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;
121 struct jr_code_unwinding_info unwinding;
124 static inline struct debug_entry *
125 debug_entry_next(struct debug_entry *ent)
128 size_t l = strlen(ent->name) + 1;
133 debug_entry_file(struct debug_entry *ent)
139 #endif /* !JITDUMP_H */