42 lines
663 B
C
42 lines
663 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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unsigned long elfboot_main(unsigned char *image);
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int main(int argc, char **argv)
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{
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int fd;
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struct stat st;
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void *p;
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if (argc < 2) {
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fprintf(stderr, "Usage : %s (elf)\n", argv[0]);
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return 1;
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}
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fd = open(argv[1], O_RDONLY);
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if (fd < 0){
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perror("open");
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return 1;
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}
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fstat(fd, &st);
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p = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
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if (p == MAP_FAILED) {
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perror("mmap");
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return 2;
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}
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printf("read result : %lx\n", elfboot_main(p));
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munmap(p, st.st_size);
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close(fd);
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return 0;
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}
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