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#include <stdio.h>
#include <filehdr.h>
#include <aouthdr.h>
#include <ldfcn.h>
#include <scnhdr.h>
#include <syms.h>
#include <reloc.h>
main(argc, argv)
int argc;
char *argv[];
{
int i, j;
char *s;
LDFILE *ldptr;
struct aouthdr unix_header;
SCNHDR secthead1;
SCNHDR secthead2;
SCNHDR secthead3;
SCNHDR secthead4;
SYMENT symbol;
struct reloc reloc;
printf("sizeof(struct reloc) = %d\n\n", sizeof(struct reloc));
printf("sizeof(struct syment) = %d\n\n", sizeof(struct syment));
ldptr = ldopen(argv[1], NULL);
printf("f_magic: %o\n", HEADER(ldptr).f_magic);
printf("f_nscns: %d\n", HEADER(ldptr).f_nscns);
printf("f_timdat: %d\n", HEADER(ldptr).f_timdat);
printf("f_symptr: %d\n", HEADER(ldptr).f_symptr);
printf("f_nsyms: %d\n", HEADER(ldptr).f_nsyms);
printf("f_opthdr: %d\n", HEADER(ldptr).f_opthdr);
printf("f_flags: %o\n", HEADER(ldptr).f_flags);
if(HEADER(ldptr).f_opthdr == 0)
goto SSS;
FSEEK(ldptr, sizeof(struct filehdr), 0);
FREAD(&unix_header, sizeof(struct aouthdr), 1, ldptr);
printf("\nmagic: %o\n", unix_header.magic);
printf("vstamp: %o\n", unix_header.vstamp);
printf("tsize: %d\n", unix_header.tsize);
printf("dsize: %d\n", unix_header.dsize);
printf("bsize: %d\n", unix_header.bsize);
printf("entry: %o\n", unix_header.entry);
printf("text_start: %o\n", unix_header.text_start);
printf("data_start: %o\n", unix_header.data_start);
SSS:
ldshread(ldptr, 1, §head1);
printf("\nsecthead1:\n");
printf("s_name: %s\n", secthead1.s_name);
printf("s_paddr: %o\n", secthead1.s_paddr);
printf("s_vaddr: %o\n", secthead1.s_vaddr);
printf("s_size: %d\n", secthead1.s_size);
printf("s_scnptr: %o\n", secthead1.s_scnptr);
printf("s_relptr: %o\n", secthead1.s_relptr);
printf("s_lnnoptr: %o\n", secthead1.s_lnnoptr);
printf("s_nreloc: %d\n", secthead1.s_nreloc);
printf("s_nlnno: %d\n", secthead1.s_nlnno);
printf("s_flags: %o\n", secthead1.s_flags);
ldshread(ldptr, 2, §head2);
printf("\nsecthead2:\n");
printf("s_name: %s\n", secthead2.s_name);
printf("s_paddr: %o\n", secthead2.s_paddr);
printf("s_vaddr: %o\n", secthead2.s_vaddr);
printf("s_size: %d\n", secthead2.s_size);
printf("s_scnptr: %o\n", secthead2.s_scnptr);
printf("s_relptr: %o\n", secthead2.s_relptr);
printf("s_lnnoptr: %o\n", secthead2.s_lnnoptr);
printf("s_nreloc: %d\n", secthead2.s_nreloc);
printf("s_nlnno: %d\n", secthead2.s_nlnno);
printf("s_flags: %o\n", secthead2.s_flags);
ldshread(ldptr, 3, §head3);
printf("\nsecthead3:\n");
printf("s_name: %s\n", secthead3.s_name);
printf("s_paddr: %o\n", secthead3.s_paddr);
printf("s_vaddr: %o\n", secthead3.s_vaddr);
printf("s_size: %d\n", secthead3.s_size);
printf("s_scnptr: %o\n", secthead3.s_scnptr);
printf("s_relptr: %o\n", secthead3.s_relptr);
printf("s_lnnoptr: %o\n", secthead3.s_lnnoptr);
printf("s_nreloc: %d\n", secthead3.s_nreloc);
printf("s_nlnno: %d\n", secthead3.s_nlnno);
printf("s_flags: %o\n", secthead3.s_flags);
ldshread(ldptr, 4, §head4);
printf("\nsecthead4:\n");
printf("s_name: %s\n", secthead4.s_name);
printf("s_paddr: %o\n", secthead4.s_paddr);
printf("s_vaddr: %o\n", secthead4.s_vaddr);
printf("s_size: %d\n", secthead4.s_size);
printf("s_scnptr: %o\n", secthead4.s_scnptr);
printf("s_relptr: %o\n", secthead4.s_relptr);
printf("s_lnnoptr: %o\n", secthead4.s_lnnoptr);
printf("s_nreloc: %d\n", secthead4.s_nreloc);
printf("s_nlnno: %d\n", secthead4.s_nlnno);
printf("s_flags: %o\n", secthead4.s_flags);
printf("\nreloc info for 1:\n");
ldrseek(ldptr, 1);
for (i = 0; i < secthead1.s_nreloc; i++) {
j = fread(&reloc, 10, 1, IOPTR(ldptr));
if (j != 1)
fprintf(stderr, "READ ERROR\n");
printf("\nr_vaddr %o\n", reloc.r_vaddr);
printf("r_symndx %d\n", reloc.r_symndx);
switch (reloc.r_type) {
case R_ABS:
printf("r_type R_ABS\n");
break;
case R_DIR32:
printf("r_type R_DIR32\n");
break;
case R_OFF16:
printf("r_type R_OFF16\n");
break;
case R_DIR32S:
printf("r_type R_DIR32S\n");
break;
case R_REL24:
printf("r_type R_REL24\n");
break;
case R_OPT16:
printf("r_type R_OPT16\n");
break;
case R_IND24:
printf("r_type R_IND24\n");
break;
case R_IND32:
printf("r_type R_IND32\n");
break;
default:
fprintf(stderr, "Illegal r_type: %o\n",
reloc.r_type);
break;
}
}
printf("\nreloc info for 2:\n");
ldrseek(ldptr, 2);
for (i = 0; i < secthead2.s_nreloc; i++) {
fread(&reloc, sizeof(struct reloc), 1, IOPTR(ldptr));
printf("\nr_vaddr %o\n", reloc.r_vaddr);
printf("r_symndx %d\n", reloc.r_symndx);
switch (reloc.r_type) {
case R_RELBYTE:
printf("r_type R_RELTYPE\n");
break;
case R_RELWORD:
printf("r_type R_RELWORD\n");
break;
case R_RELLONG:
printf("r_type R_RELLONG\n");
break;
default:
fprintf(stderr, "Illegal r_type: %d",
reloc.r_type);
break;
}
}
printf("\nsymbols:\n");
for (i = 0; i < HEADER(ldptr).f_nsyms; i++) {
ldtbread(ldptr, i, &symbol);
printf("\nldgetname(%d): %s\n",
i, ldgetname(ldptr, &symbol));
printf("n_value: %o\n", symbol.n_value);
switch (symbol.n_scnum) {
case N_UNDEF:
printf("n_scnum: N_UNDEF\n");
break;
case N_ABS:
printf("n_scnum: N_ABS\n");
break;
case N_DEBUG:
printf("n_scnum: N_DEBUG\n");
break;
case N_TV:
printf("n_scnum: N_TV\n");
break;
case P_TV:
printf("n_scnum: P_TV\n");
break;
default:
printf("n_scnum: %d\n", symbol.n_scnum);
break;
}
printf("n_type: %d\n", symbol.n_type);
printf("n_scalss: %d\n", symbol.n_sclass);
printf("n_numaux: %d\n", symbol.n_numaux);
i += symbol.n_numaux;
}
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.