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) 22 23 #define JITHEADER_VERSION 1 24 25 enum jitdump_flags_bits { 26 JITDUMP_FLAGS_MAX_BIT, 27 }; 28 29 #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \ 30 (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0) 31 32 struct jitheader { 33 uint32_t magic; /* characters "jItD" */ 34 uint32_t version; /* header version */ 35 uint32_t total_size; /* total size of header */ 36 uint32_t elf_mach; /* elf mach target */ 37 uint32_t pad1; /* reserved */ 38 uint32_t pid; /* JIT process id */ 39 uint64_t timestamp; /* timestamp */ 40 uint64_t flags; /* flags */ 41 }; 42 43 enum jit_record_type { 44 JIT_CODE_LOAD = 0, 45 JIT_CODE_MOVE = 1, 46 JIT_CODE_DEBUG_INFO = 2, 47 JIT_CODE_CLOSE = 3, 48 49 JIT_CODE_MAX, 50 }; 51 52 /* record prefix (mandatory in each record) */ 53 struct jr_prefix { 54 uint32_t id; 55 uint32_t total_size; 56 uint64_t timestamp; 57 }; 58 59 struct jr_code_load { 60 struct jr_prefix p; 61 62 uint32_t pid; 63 uint32_t tid; 64 uint64_t vma; 65 uint64_t code_addr; 66 uint64_t code_size; 67 uint64_t code_index; 68 }; 69 70 struct jr_code_close { 71 struct jr_prefix p; 72 }; 73 74 struct jr_code_move { 75 struct jr_prefix p; 76 77 uint32_t pid; 78 uint32_t tid; 79 uint64_t vma; 80 uint64_t old_code_addr; 81 uint64_t new_code_addr; 82 uint64_t code_size; 83 uint64_t code_index; 84 }; 85 86 struct debug_entry { 87 uint64_t addr; 88 int lineno; /* source line number starting at 1 */ 89 int discrim; /* column discriminator, 0 is default */ 90 const char name[0]; /* null terminated filename, \xff\0 if same as previous entry */ 91 }; 92 93 struct jr_code_debug_info { 94 struct jr_prefix p; 95 96 uint64_t code_addr; 97 uint64_t nr_entry; 98 struct debug_entry entries[0]; 99 }; 100 101 union jr_entry { 102 struct jr_code_debug_info info; 103 struct jr_code_close close; 104 struct jr_code_load load; 105 struct jr_code_move move; 106 struct jr_prefix prefix; 107 }; 108 109 static inline struct debug_entry * 110 debug_entry_next(struct debug_entry *ent) 111 { 112 void *a = ent + 1; 113 size_t l = strlen(ent->name) + 1; 114 return a + l; 115 } 116 117 static inline char * 118 debug_entry_file(struct debug_entry *ent) 119 { 120 void *a = ent + 1; 121 return a; 122 } 123 124 #endif /* !JITDUMP_H */ 125