/[dynamips]/upstream/dynamips-0.2.6-RC3/rom2c.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /upstream/dynamips-0.2.6-RC3/rom2c.c

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Revision 1 - (hide annotations)
Sat Oct 6 16:01:44 2007 UTC (14 years, 9 months ago) by dpavlin
Original Path: upstream/dynamips-0.2.5/rom2c.c
File MIME type: text/plain
File size: 2211 byte(s)
import 0.2.5 from upstream

1 dpavlin 1 /*
2     * Cisco 7200 (Predator) simulation platform.
3     * Copyright (c) 2006 Christophe Fillot (cf@utc.fr)
4     */
5    
6     #include <stdio.h>
7     #include <stdlib.h>
8     #include <unistd.h>
9     #include <string.h>
10     #include <sys/types.h>
11     #include <sys/stat.h>
12     #include <sys/mman.h>
13     #include <signal.h>
14     #include <fcntl.h>
15     #include <assert.h>
16     #include <libelf.h>
17    
18     #include "utils.h"
19    
20     /* Extract ROM code+data from an ELF file and convert it into a C array */
21     int main(int argc,char *argv[])
22     {
23     unsigned char buffer[8];
24     m_uint32_t vaddr;
25     Elf32_Ehdr *ehdr;
26     Elf32_Phdr *phdr;
27     Elf *img_elf;
28     size_t len,clen;
29     int i,j,fd;
30     FILE *bfd,*fd_out;
31    
32     if (argc != 3) {
33     fprintf(stderr,"Usage: %s <input_file> <output_file>\n",argv[0]);
34     exit(EXIT_FAILURE);
35     }
36    
37     if ((fd = open(argv[1],O_RDONLY)) == -1)
38     return(-1);
39    
40     if (elf_version(EV_CURRENT) == EV_NONE) {
41     fprintf(stderr,"load_elf_image: library out of date\n");
42     return(-1);
43     }
44    
45     if (!(img_elf = elf_begin(fd,ELF_C_READ,NULL))) {
46     fprintf(stderr,"load_elf_image: elf_begin: %s\n",
47     elf_errmsg(elf_errno()));
48     return(-1);
49     }
50    
51     if (!(phdr = elf32_getphdr(img_elf))) {
52     fprintf(stderr,"load_elf_image: elf32_getphdr: %s\n",
53     elf_errmsg(elf_errno()));
54     return(-1);
55     }
56    
57     if (!(fd_out = fopen(argv[2],"w"))) {
58     fprintf(stderr,"Unable to create file \"%s\"\n",argv[2]);
59     exit(EXIT_FAILURE);
60     }
61    
62     ehdr = elf32_getehdr(img_elf);
63     phdr = elf32_getphdr(img_elf);
64    
65     printf("Extracting ROM from ELF file '%s'...\n",argv[1]);
66     bfd = fdopen(fd,"r");
67    
68     if (!bfd) {
69     perror("load_elf_image: fdopen");
70     return(-1);
71     }
72    
73     for(i=0;i<ehdr->e_phnum;i++,phdr++)
74     {
75     fseek(bfd,phdr->p_offset,SEEK_SET);
76    
77     vaddr = (m_uint64_t)phdr->p_vaddr;
78     len = phdr->p_filesz;
79    
80     if (vaddr != 0xbfc00000)
81     continue;
82    
83     while(len > 0)
84     {
85     clen = fread(buffer,1,sizeof(buffer),bfd);
86    
87     if (clen == 0)
88     break;
89    
90     fprintf(fd_out," ");
91    
92     for(j=0;j<clen;j++)
93     fprintf(fd_out,"0x%2.2x, ",buffer[j]);
94    
95     fprintf(fd_out,"\n");
96     len -= clen;
97     }
98     }
99    
100     fclose(fd_out);
101     return(0);
102     }

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