mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
149 lines
4.9 KiB
C
149 lines
4.9 KiB
C
/* COFF spec for AMD 290*0
|
|
|
|
Copyright 2001 Free Software Foundation, Inc.
|
|
|
|
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
Contributed by David Wood @ New York University. */
|
|
|
|
#ifndef AMD
|
|
# define AMD
|
|
#endif
|
|
|
|
#define L_LNNO_SIZE 2
|
|
#include "coff/external.h"
|
|
|
|
/*
|
|
** Magic numbers for Am29000
|
|
** (AT&T will assign the "real" magic number)
|
|
*/
|
|
|
|
#define SIPFBOMAGIC 0572 /* Am29000 (Byte 0 is MSB) */
|
|
#define SIPRBOMAGIC 0573 /* Am29000 (Byte 0 is LSB) */
|
|
|
|
#define A29K_MAGIC_BIG SIPFBOMAGIC
|
|
#define A29K_MAGIC_LITTLE SIPRBOMAGIC
|
|
#define A29KBADMAG(x) ( ((x).f_magic != A29K_MAGIC_BIG) && \
|
|
((x).f_magic != A29K_MAGIC_LITTLE))
|
|
|
|
#define OMAGIC A29K_MAGIC_BIG
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
|
|
|
|
/*
|
|
** File header flags currently known to us.
|
|
**
|
|
** Am29000 will use the F_AR32WR and F_AR32W flags to indicate
|
|
** the byte ordering in the file.
|
|
*/
|
|
|
|
/*--------------------------------------------------------------*/
|
|
|
|
|
|
/* aouthdr magic numbers */
|
|
#define NMAGIC 0410 /* separate i/d executable */
|
|
#define SHMAGIC 0406 /* NYU/Ultra3 shared data executable
|
|
(writable text) */
|
|
#undef _ETEXT
|
|
#define _ETEXT "_etext"
|
|
|
|
/*--------------------------------------------------------------*/
|
|
|
|
|
|
/* More names of "special" sections. */
|
|
#define _LIT ".lit"
|
|
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
|
|
|
|
/*
|
|
** Section types - with additional section type for global
|
|
** registers which will be relocatable for the Am29000.
|
|
**
|
|
** In instances where it is necessary for a linker to produce an
|
|
** output file which contains text or data not based at virtual
|
|
** address 0, e.g. for a ROM, then the linker should accept
|
|
** address base information as command input and use PAD sections
|
|
** to skip over unused addresses.
|
|
*/
|
|
|
|
#define STYP_BSSREG 0x1200 /* Global register area (like STYP_INFO) */
|
|
#define STYP_ENVIR 0x2200 /* Environment (like STYP_INFO) */
|
|
#define STYP_ABS 0x4000 /* Absolute (allocated, not reloc, loaded) */
|
|
|
|
/*--------------------------------------------------------------*/
|
|
|
|
/*
|
|
** Relocation information declaration and related definitions
|
|
*/
|
|
|
|
struct external_reloc
|
|
{
|
|
char r_vaddr[4]; /* (virtual) address of reference */
|
|
char r_symndx[4]; /* index into symbol table */
|
|
char r_type[2]; /* relocation type */
|
|
};
|
|
|
|
#define RELOC struct external_reloc
|
|
#define RELSZ 10 /* sizeof (RELOC) */
|
|
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
|
|
|
|
/*
|
|
** Relocation types for the Am29000
|
|
*/
|
|
|
|
#define R_ABS 0 /* reference is absolute */
|
|
|
|
#define R_IREL 030 /* instruction relative (jmp/call) */
|
|
#define R_IABS 031 /* instruction absolute (jmp/call) */
|
|
#define R_ILOHALF 032 /* instruction low half (const) */
|
|
#define R_IHIHALF 033 /* instruction high half (consth) part 1 */
|
|
#define R_IHCONST 034 /* instruction high half (consth) part 2 */
|
|
/* constant offset of R_IHIHALF relocation */
|
|
#define R_BYTE 035 /* relocatable byte value */
|
|
#define R_HWORD 036 /* relocatable halfword value */
|
|
#define R_WORD 037 /* relocatable word value */
|
|
|
|
#define R_IGLBLRC 040 /* instruction global register RC */
|
|
#define R_IGLBLRA 041 /* instruction global register RA */
|
|
#define R_IGLBLRB 042 /* instruction global register RB */
|
|
|
|
/*
|
|
NOTE:
|
|
All the "I" forms refer to 29000 instruction formats. The linker is
|
|
expected to know how the numeric information is split and/or aligned
|
|
within the instruction word(s). R_BYTE works for instructions, too.
|
|
|
|
If the parameter to a CONSTH instruction is a relocatable type, two
|
|
relocation records are written. The first has an r_type of R_IHIHALF
|
|
(33 octal) and a normal r_vaddr and r_symndx. The second relocation
|
|
record has an r_type of R_IHCONST (34 octal), a normal r_vaddr (which
|
|
is redundant), and an r_symndx containing the 32-bit constant offset
|
|
to the relocation instead of the actual symbol table index. This
|
|
second record is always written, even if the constant offset is zero.
|
|
The constant fields of the instruction are set to zero.
|
|
*/
|
|
|
|
/*--------------------------------------------------------------*/
|
|
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
|
|
|
|
/*
|
|
** Storage class definitions - new classes for global registers.
|
|
*/
|
|
|
|
#define C_GLBLREG 19 /* global register */
|
|
#define C_EXTREG 20 /* external global register */
|
|
#define C_DEFREG 21 /* ext. def. of global register */
|