cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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jitdump.h (2930B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * jitdump.h: jitted code info encapsulation file format
      4 *
      5 * Adapted from OProfile GPLv2 support jidump.h:
      6 * Copyright 2007 OProfile authors
      7 * Jens Wilke
      8 * Daniel Hansel
      9 * Copyright IBM Corporation 2007
     10 */
     11#ifndef JITDUMP_H
     12#define JITDUMP_H
     13
     14#include <sys/time.h>
     15#include <time.h>
     16#include <stdint.h>
     17
     18/* JiTD */
     19#define JITHEADER_MAGIC		0x4A695444
     20#define JITHEADER_MAGIC_SW	0x4454694A
     21
     22#define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7)
     23#define ALIGN_8(x) (((x) + 7) & (~7))
     24
     25#define JITHEADER_VERSION 1
     26
     27enum jitdump_flags_bits {
     28	JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT,
     29	JITDUMP_FLAGS_MAX_BIT,
     30};
     31
     32#define JITDUMP_FLAGS_ARCH_TIMESTAMP	(1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT)
     33
     34#define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \
     35				(~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0)
     36
     37struct jitheader {
     38	uint32_t magic;		/* characters "jItD" */
     39	uint32_t version;	/* header version */
     40	uint32_t total_size;	/* total size of header */
     41	uint32_t elf_mach;	/* elf mach target */
     42	uint32_t pad1;		/* reserved */
     43	uint32_t pid;		/* JIT process id */
     44	uint64_t timestamp;	/* timestamp */
     45	uint64_t flags;		/* flags */
     46};
     47
     48enum jit_record_type {
     49	JIT_CODE_LOAD		= 0,
     50        JIT_CODE_MOVE           = 1,
     51	JIT_CODE_DEBUG_INFO	= 2,
     52	JIT_CODE_CLOSE		= 3,
     53	JIT_CODE_UNWINDING_INFO	= 4,
     54
     55	JIT_CODE_MAX,
     56};
     57
     58/* record prefix (mandatory in each record) */
     59struct jr_prefix {
     60	uint32_t id;
     61	uint32_t total_size;
     62	uint64_t timestamp;
     63};
     64
     65struct jr_code_load {
     66	struct jr_prefix p;
     67
     68	uint32_t pid;
     69	uint32_t tid;
     70	uint64_t vma;
     71	uint64_t code_addr;
     72	uint64_t code_size;
     73	uint64_t code_index;
     74};
     75
     76struct jr_code_close {
     77	struct jr_prefix p;
     78};
     79
     80struct jr_code_move {
     81	struct jr_prefix p;
     82
     83	uint32_t pid;
     84	uint32_t tid;
     85	uint64_t vma;
     86	uint64_t old_code_addr;
     87	uint64_t new_code_addr;
     88	uint64_t code_size;
     89	uint64_t code_index;
     90};
     91
     92struct debug_entry {
     93	uint64_t addr;
     94	int lineno;	    /* source line number starting at 1 */
     95	int discrim;	    /* column discriminator, 0 is default */
     96	const char name[]; /* null terminated filename, \xff\0 if same as previous entry */
     97};
     98
     99struct jr_code_debug_info {
    100	struct jr_prefix p;
    101
    102	uint64_t code_addr;
    103	uint64_t nr_entry;
    104	struct debug_entry entries[];
    105};
    106
    107struct jr_code_unwinding_info {
    108	struct jr_prefix p;
    109
    110	uint64_t unwinding_size;
    111	uint64_t eh_frame_hdr_size;
    112	uint64_t mapped_size;
    113	const char unwinding_data[];
    114};
    115
    116union jr_entry {
    117        struct jr_code_debug_info info;
    118        struct jr_code_close close;
    119        struct jr_code_load load;
    120        struct jr_code_move move;
    121        struct jr_prefix prefix;
    122        struct jr_code_unwinding_info unwinding;
    123};
    124
    125static inline struct debug_entry *
    126debug_entry_next(struct debug_entry *ent)
    127{
    128	void *a = ent + 1;
    129	size_t l = strlen(ent->name) + 1;
    130	return a + l;
    131}
    132
    133static inline char *
    134debug_entry_file(struct debug_entry *ent)
    135{
    136	void *a = ent + 1;
    137	return a;
    138}
    139
    140#endif /* !JITDUMP_H */