#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <a.out.h>
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#include <a.out.h>
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#include <string.h>
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#include <string.h>
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int main(int argc, char **argv)
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int main(int argc, char **argv)
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{
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{
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void *data;
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void *data;
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struct exec ex;
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struct exec ex;
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FILE *f;
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FILE *f;
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int totlen;
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int totlen;
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if (argc < 2) {
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if (argc < 2) {
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fprintf(stderr, "Usage: build kernel-name\n");
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fprintf(stderr, "Usage: build kernel-name\n");
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exit(1);
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exit(1);
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}
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}
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f = fopen(argv[1], "rb");
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f = fopen(argv[1], "rb");
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fread(&ex, 1, sizeof(ex), f);
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fread(&ex, 1, sizeof(ex), f);
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if(N_MAGIC(ex) == ZMAGIC) {
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if(N_MAGIC(ex) == ZMAGIC) {
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fseek(f, 4096, SEEK_SET);
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fseek(f, 4096, SEEK_SET);
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totlen = ex.a_text + ex.a_data;
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totlen = ex.a_text + ex.a_data;
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} else
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} else
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if(N_MAGIC(ex) == QMAGIC) {
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if(N_MAGIC(ex) == QMAGIC) {
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unsigned int my_header;
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unsigned int my_header;
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fseek(f, 4, SEEK_SET);
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fseek(f, 4, SEEK_SET);
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my_header = 0xea000006;
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my_header = 0xea000006;
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fwrite(&my_header, 4, 1, stdout);
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fwrite(&my_header, 4, 1, stdout);
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totlen = ex.a_text + ex.a_data - 4;
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totlen = ex.a_text + ex.a_data - 4;
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} else {
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} else {
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fprintf(stderr, "Unacceptable a.out header on kernel\n");
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fprintf(stderr, "Unacceptable a.out header on kernel\n");
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fclose(f);
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fclose(f);
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exit(1);
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exit(1);
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}
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}
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fprintf(stderr, "Kernel is %dk (%dk text, %dk data, %dk bss)\n",
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fprintf(stderr, "Kernel is %dk (%dk text, %dk data, %dk bss)\n",
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(ex.a_text + ex.a_data + ex.a_bss)/1024,
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(ex.a_text + ex.a_data + ex.a_bss)/1024,
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ex.a_text/1024, ex.a_data/1024, ex.a_bss/1024);
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ex.a_text/1024, ex.a_data/1024, ex.a_bss/1024);
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data = malloc(totlen);
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data = malloc(totlen);
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fread(data, 1, totlen, f);
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fread(data, 1, totlen, f);
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fwrite(data, 1, totlen, stdout);
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fwrite(data, 1, totlen, stdout);
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free(data);
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free(data);
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fclose(f);
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fclose(f);
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fflush(stdout);
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fflush(stdout);
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return 0;
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return 0;
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}
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}
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