mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-26 13:44:29 +08:00
103 lines
1.9 KiB
C
103 lines
1.9 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2017 Andes Technology
|
||
|
|
* Chih-Mao Chen <cmchen@andestech.com>
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*
|
||
|
|
* Statically process runtime relocations on RISC-V ELF images
|
||
|
|
* so that it can be directly executed when loaded at LMA
|
||
|
|
* without fixup. Both RV32 and RV64 are supported.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
|
||
|
|
#error "Only little-endian host is supported"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
#include <stdbool.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#include <elf.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <sys/mman.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#ifndef EM_RISCV
|
||
|
|
#define EM_RISCV 243
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef R_RISCV_32
|
||
|
|
#define R_RISCV_32 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef R_RISCV_64
|
||
|
|
#define R_RISCV_64 2
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef R_RISCV_RELATIVE
|
||
|
|
#define R_RISCV_RELATIVE 3
|
||
|
|
#endif
|
||
|
|
|
||
|
|
const char *argv0;
|
||
|
|
|
||
|
|
#define die(fmt, ...) \
|
||
|
|
do { \
|
||
|
|
fprintf(stderr, "%s: " fmt "\n", argv0, ## __VA_ARGS__); \
|
||
|
|
exit(EXIT_FAILURE); \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define PRELINK_INC_BITS 32
|
||
|
|
#include "prelink-riscv.inc"
|
||
|
|
#undef PRELINK_INC_BITS
|
||
|
|
|
||
|
|
#define PRELINK_INC_BITS 64
|
||
|
|
#include "prelink-riscv.inc"
|
||
|
|
#undef PRELINK_INC_BITS
|
||
|
|
|
||
|
|
int main(int argc, const char *const *argv)
|
||
|
|
{
|
||
|
|
argv0 = argv[0];
|
||
|
|
|
||
|
|
if (argc < 2) {
|
||
|
|
fprintf(stderr, "Usage: %s <u-boot>\n", argv0);
|
||
|
|
exit(EXIT_FAILURE);
|
||
|
|
}
|
||
|
|
|
||
|
|
int fd = open(argv[1], O_RDWR, 0);
|
||
|
|
|
||
|
|
if (fd < 0)
|
||
|
|
die("Cannot open %s: %s", argv[1], strerror(errno));
|
||
|
|
|
||
|
|
struct stat st;
|
||
|
|
|
||
|
|
if (fstat(fd, &st) < 0)
|
||
|
|
die("Cannot stat %s: %s", argv[1], strerror(errno));
|
||
|
|
|
||
|
|
void *data =
|
||
|
|
mmap(0, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
||
|
|
|
||
|
|
if (data == MAP_FAILED)
|
||
|
|
die("Cannot mmap %s: %s", argv[1], strerror(errno));
|
||
|
|
|
||
|
|
close(fd);
|
||
|
|
|
||
|
|
unsigned char *e_ident = (unsigned char *)data;
|
||
|
|
|
||
|
|
if (memcmp(e_ident, ELFMAG, SELFMAG) != 0)
|
||
|
|
die("Invalid ELF file %s", argv[1]);
|
||
|
|
|
||
|
|
bool is64 = e_ident[EI_CLASS] == ELFCLASS64;
|
||
|
|
|
||
|
|
if (is64)
|
||
|
|
prelink64(data);
|
||
|
|
else
|
||
|
|
prelink32(data);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|