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_ARCH_TIMESTAMP_BIT,
  27        JITDUMP_FLAGS_MAX_BIT,
  28};
  29
  30#define JITDUMP_FLAGS_ARCH_TIMESTAMP    (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT)
  31
  32#define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \
  33                                (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0)
  34
  35struct jitheader {
  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 */
  44};
  45
  46enum jit_record_type {
  47        JIT_CODE_LOAD           = 0,
  48        JIT_CODE_MOVE           = 1,
  49        JIT_CODE_DEBUG_INFO     = 2,
  50        JIT_CODE_CLOSE          = 3,
  51
  52        JIT_CODE_MAX,
  53};
  54
  55/* record prefix (mandatory in each record) */
  56struct jr_prefix {
  57        uint32_t id;
  58        uint32_t total_size;
  59        uint64_t timestamp;
  60};
  61
  62struct jr_code_load {
  63        struct jr_prefix p;
  64
  65        uint32_t pid;
  66        uint32_t tid;
  67        uint64_t vma;
  68        uint64_t code_addr;
  69        uint64_t code_size;
  70        uint64_t code_index;
  71};
  72
  73struct jr_code_close {
  74        struct jr_prefix p;
  75};
  76
  77struct jr_code_move {
  78        struct jr_prefix p;
  79
  80        uint32_t pid;
  81        uint32_t tid;
  82        uint64_t vma;
  83        uint64_t old_code_addr;
  84        uint64_t new_code_addr;
  85        uint64_t code_size;
  86        uint64_t code_index;
  87};
  88
  89struct debug_entry {
  90        uint64_t 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 */
  94};
  95
  96struct jr_code_debug_info {
  97        struct jr_prefix p;
  98
  99        uint64_t code_addr;
 100        uint64_t nr_entry;
 101        struct debug_entry entries[0];
 102};
 103
 104union jr_entry {
 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;
 110};
 111
 112static inline struct debug_entry *
 113debug_entry_next(struct debug_entry *ent)
 114{
 115        void *a = ent + 1;
 116        size_t l = strlen(ent->name) + 1;
 117        return a + l;
 118}
 119
 120static inline char *
 121debug_entry_file(struct debug_entry *ent)
 122{
 123        void *a = ent + 1;
 124        return a;
 125}
 126
 127#endif /* !JITDUMP_H */
 128