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Diffstat (limited to 'include/a.out.encap.h')
| -rwxr-xr-x | include/a.out.encap.h | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/include/a.out.encap.h b/include/a.out.encap.h deleted file mode 100755 index cebedf3..0000000 --- a/include/a.out.encap.h +++ /dev/null @@ -1,135 +0,0 @@ -/* Yet Another Try at encapsulating bsd object files in coff. - Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. - Written by Pace Willisson 12/9/88 - - This file is obsolete. It needs to be converted to just define a bunch - of stuff that BFD can use to do coff-encapsulated files. --gnu@cygnus.com - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* - * We only use the coff headers to tell the kernel - * how to exec the file. Therefore, the only fields that need to - * be filled in are the scnptr and vaddr for the text and data - * sections, and the vaddr for the bss. As far as coff is concerned, - * there is no symbol table, relocation, or line numbers. - * - * A normal bsd header (struct exec) is placed after the coff headers, - * and before the real text. I defined a the new fields 'a_machtype' - * and a_flags. If a_machtype is M_386, and a_flags & A_ENCAP is - * true, then the bsd header is preceeded by a coff header. Macros - * like N_TXTOFF and N_TXTADDR use this field to find the bsd header. - * - * The only problem is to track down the bsd exec header. The - * macros HEADER_OFFSET, etc do this. - */ - -#define N_FLAGS_COFF_ENCAPSULATE 0x20 /* coff header precedes bsd header */ - -/* Describe the COFF header used for encapsulation. */ - -struct coffheader -{ - /* filehdr */ - unsigned short f_magic; - unsigned short f_nscns; - long f_timdat; - long f_symptr; - long f_nsyms; - unsigned short f_opthdr; - unsigned short f_flags; - /* aouthdr */ - short magic; - short vstamp; - long tsize; - long dsize; - long bsize; - long entry; - long text_start; - long data_start; - struct coffscn - { - char s_name[8]; - long s_paddr; - long s_vaddr; - long s_size; - long s_scnptr; - long s_relptr; - long s_lnnoptr; - unsigned short s_nreloc; - unsigned short s_nlnno; - long s_flags; - } scns[3]; -}; - -/* Describe some of the parameters of the encapsulation, - including how to find the encapsulated BSD header. */ - -/* FIXME, this is dumb. The same tools can't handle a.outs for different - architectures, just because COFF_MAGIC is different; so you need a - separate GNU nm for every architecture!!? Unfortunately, it needs to - be this way, since the COFF_MAGIC value is determined by the kernel - we're trying to fool here. */ - -#define COFF_MAGIC_I386 0514 /* I386MAGIC */ -#define COFF_MAGIC_M68K 0520 /* MC68MAGIC */ -#define COFF_MAGIC_A29K 0x17A /* Used by asm29k cross-tools */ - -#ifdef COFF_MAGIC -short __header_offset_temp; -#define HEADER_OFFSET(f) \ - (__header_offset_temp = 0, \ - fread ((char *)&__header_offset_temp, sizeof (short), 1, (f)), \ - fseek ((f), -sizeof (short), 1), \ - __header_offset_temp==COFF_MAGIC ? sizeof(struct coffheader) : 0) -#else -#define HEADER_OFFSET(f) 0 -#endif - -#define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1)) - -/* Describe the characteristics of the BSD header - that appears inside the encapsulation. */ - -/* Encapsulated coff files that are linked ZMAGIC have a text segment - offset just past the header (and a matching TXTADDR), excluding - the headers from the text segment proper but keeping the physical - layout and the virtual memory layout page-aligned. - - Non-encapsulated a.out files that are linked ZMAGIC have a text - segment that starts at 0 and an N_TXTADR similarly offset to 0. - They too are page-aligned with each other, but they include the - a.out header as part of the text. - - The _N_HDROFF gets sizeof struct exec added to it, so we have - to compensate here. See <a.out.gnu.h>. */ - -#undef _N_HDROFF -#undef N_TXTADDR -#undef N_DATADDR - -#define _N_HDROFF(x) ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ - sizeof (struct coffheader) : 0) - -/* Address of text segment in memory after it is loaded. */ -#define N_TXTADDR(x) \ - ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ - sizeof (struct coffheader) + sizeof (struct exec) : 0) -#define SEGMENT_SIZE 0x400000 - -#define N_DATADDR(x) \ - ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ - (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))) : \ - (N_TXTADDR(x)+(x).a_text)) |