mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Andes Technology
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* Chih-Mao Chen <cmchen@andestech.com>
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*
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* Statically process runtime relocations on RISC-V ELF images
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* so that it can be directly executed when loaded at LMA
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* without fixup. Both RV32 and RV64 are supported.
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*/
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#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
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#error "Only little-endian host is supported"
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#endif
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#include <errno.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <elf.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifndef EM_RISCV
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#define EM_RISCV 243
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#endif
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#ifndef R_RISCV_32
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#define R_RISCV_32 1
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#endif
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#ifndef R_RISCV_64
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#define R_RISCV_64 2
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#endif
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#ifndef R_RISCV_RELATIVE
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#define R_RISCV_RELATIVE 3
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#endif
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const char *argv0;
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#define die(fmt, ...) \
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do { \
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fprintf(stderr, "%s: " fmt "\n", argv0, ## __VA_ARGS__); \
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exit(EXIT_FAILURE); \
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} while (0)
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#define PRELINK_INC_BITS 32
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#include "prelink-riscv.inc"
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#undef PRELINK_INC_BITS
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#define PRELINK_INC_BITS 64
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#include "prelink-riscv.inc"
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#undef PRELINK_INC_BITS
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int main(int argc, const char *const *argv)
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{
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argv0 = argv[0];
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if (argc < 2) {
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fprintf(stderr, "Usage: %s <u-boot>\n", argv0);
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exit(EXIT_FAILURE);
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}
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int fd = open(argv[1], O_RDWR, 0);
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if (fd < 0)
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die("Cannot open %s: %s", argv[1], strerror(errno));
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struct stat st;
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if (fstat(fd, &st) < 0)
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die("Cannot stat %s: %s", argv[1], strerror(errno));
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void *data =
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mmap(0, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (data == MAP_FAILED)
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die("Cannot mmap %s: %s", argv[1], strerror(errno));
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close(fd);
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unsigned char *e_ident = (unsigned char *)data;
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if (memcmp(e_ident, ELFMAG, SELFMAG) != 0)
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die("Invalid ELF file %s", argv[1]);
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bool is64 = e_ident[EI_CLASS] == ELFCLASS64;
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if (is64)
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prelink64(data);
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else
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prelink32(data);
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return 0;
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}
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