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)
23 #define JITHEADER_VERSION 1
25 enum jitdump_flags_bits {
26 JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT,
27 JITDUMP_FLAGS_MAX_BIT,
30 #define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT)
32 #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \
33 (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0)
36 uint32_t magic; /* characters "jItD" */
37 uint32_t version; /* header version */
38 uint32_t total_size; /* total size of header */
39 uint32_t elf_mach; /* elf mach target */
40 uint32_t pad1; /* reserved */
41 uint32_t pid; /* JIT process id */
42 uint64_t timestamp; /* timestamp */
43 uint64_t flags; /* flags */
46 enum jit_record_type {
49 JIT_CODE_DEBUG_INFO = 2,
55 /* record prefix (mandatory in each record) */
73 struct jr_code_close {
83 uint64_t old_code_addr;
84 uint64_t new_code_addr;
91 int lineno; /* source line number starting at 1 */
92 int discrim; /* column discriminator, 0 is default */
93 const char name[0]; /* null terminated filename, \xff\0 if same as previous entry */
96 struct jr_code_debug_info {
101 struct debug_entry entries[0];
105 struct jr_code_debug_info info;
106 struct jr_code_close close;
107 struct jr_code_load load;
108 struct jr_code_move move;
109 struct jr_prefix prefix;
112 static inline struct debug_entry *
113 debug_entry_next(struct debug_entry *ent)
116 size_t l = strlen(ent->name) + 1;
121 debug_entry_file(struct debug_entry *ent)
127 #endif /* !JITDUMP_H */