genelf.c File Reference

#include <sys/types.h>
#include <stdio.h>
#include <getopt.h>
#include <stddef.h>
#include <libelf.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include <limits.h>
#include <fcntl.h>
#include <err.h>
#include "perf.h"
#include "genelf.h"
#include "../util/jitdump.h"

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Classes
struct	Elf_Note
struct	options
struct	buildid_note

Macros
#define	NT_GNU_BUILD_ID   3
#define	JVMTI
#define	BUILD_ID_URANDOM   /* different uuid for each run */

Functions
static void	gen_build_id (struct buildid_note *note, unsigned long load_addr __maybe_unused, const void *code __maybe_unused, size_t csize __maybe_unused)
static int	jit_add_eh_frame_info (Elf *e, void *unwinding, uint64_t unwinding_header_size, uint64_t unwinding_size, uint64_t base_offset)
int	jit_write_elf (int fd, uint64_t load_addr, const char *sym, const void *code, int csize, void *debug __maybe_unused, int nr_debug_entries __maybe_unused, void *unwinding, uint64_t unwinding_header_size, uint64_t unwinding_size)

Variables
static char	shd_string_table []
static struct buildid_note	bnote
static Elf_Sym	symtab []

Macro Definition Documentation

BUILD_ID_URANDOM

#define BUILD_ID_URANDOM   /* different uuid for each run */

Definition at line 36 of file genelf.c.

JVMTI

#define JVMTI

Definition at line 34 of file genelf.c.

NT_GNU_BUILD_ID

#define NT_GNU_BUILD_ID   3

Definition at line 31 of file genelf.c.

Function Documentation

gen_build_id()

static void gen_build_id ( struct buildid_note *  note, unsigned long load_addr  __maybe_unused, const void *code  __maybe_unused, size_t csize  __maybe_unused  )

static

Definition at line 106 of file genelf.c.

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jit_add_eh_frame_info()

static int jit_add_eh_frame_info ( Elf *  e, void *  unwinding, uint64_t  unwinding_header_size, uint64_t  unwinding_size, uint64_t  base_offset  )

static

Definition at line 159 of file genelf.c.

jit_write_elf()

int jit_write_elf	(	int	fd,
		uint64_t	load_addr,
		const char *	sym,
		const void *	code,
		int	csize,
		void *debug	__maybe_unused,
		int nr_debug_entries	__maybe_unused,
		void *	unwinding,
		uint64_t	unwinding_header_size,
		uint64_t	unwinding_size
	)

Definition at line 246 of file genelf.c.

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Variable Documentation

bnote

struct buildid_note bnote

static

shd_string_table

char shd_string_table[]

static

Initial value:

= {
    0,
    '.', 't', 'e', 'x', 't', 0,         
    '.', 's', 'h', 's', 't', 'r', 't', 'a', 'b', 0, 
    '.', 's', 'y', 'm', 't', 'a', 'b', 0,       
    '.', 's', 't', 'r', 't', 'a', 'b', 0,       
    '.', 'n', 'o', 't', 'e', '.', 'g', 'n', 'u', '.', 'b', 'u', 'i', 'l', 'd', '-', 'i', 'd', 0, 
    '.', 'd', 'e', 'b', 'u', 'g', '_', 'l', 'i', 'n', 'e', 0, 
    '.', 'd', 'e', 'b', 'u', 'g', '_', 'i', 'n', 'f', 'o', 0, 
    '.', 'd', 'e', 'b', 'u', 'g', '_', 'a', 'b', 'b', 'r', 'e', 'v', 0, 
    '.', 'e', 'h', '_', 'f', 'r', 'a', 'm', 'e', '_', 'h', 'd', 'r', 0, 
    '.', 'e', 'h', '_', 'f', 'r', 'a', 'm', 'e', 0, 
}

Definition at line 66 of file genelf.c.

symtab

Elf_Sym symtab[]

static

Initial value:

={
    
    { .st_name  = 0, 
      .st_info  = ELF_ST_TYPE(STT_NOTYPE),
      .st_shndx = 0, 
      .st_value = 0x0,
      .st_other = ELF_ST_VIS(STV_DEFAULT),
      .st_size  = 0,
    },
    { .st_name  = 1, 
      .st_info  = ELF_ST_BIND(STB_LOCAL) | ELF_ST_TYPE(STT_FUNC),
      .st_shndx = 1,
      .st_value = 0, 
      .st_other = ELF_ST_VIS(STV_DEFAULT),
      .st_size  = 0, 
    }
}

Definition at line 86 of file genelf.c.