LXR linux/tools/perf/util/jitdump.h

   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
  25enum 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
  32struct 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
  43enum 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) */
  53struct jr_prefix {
  54        uint32_t id;
  55        uint32_t total_size;
  56        uint64_t timestamp;
  57};
  58
  59struct 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
  70struct jr_code_close {
  71        struct jr_prefix p;
  72};
  73
  74struct 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
  86struct 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
  93struct 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
 101union 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
 109static inline struct debug_entry *
 110debug_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
 117static inline char *
 118debug_entry_file(struct debug_entry *ent)
 119{
 120        void *a = ent + 1;
 121        return a;
 122}
 123
 124#endif /* !JITDUMP_H */
 125