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 */