[deliverable/binutils-gdb.git] / include / coff / a29k.h

/* 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) */
#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 */
Commit	Line	Data
252b5132	1	/* COFF spec for AMD 290*0
4f1d9bd8 NC	2
	3	Copyright 2001 Free Software Foundation, Inc.
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	18
	19	Contributed by David Wood @ New York University. */
252b5132 RH	20
	21	#ifndef AMD
	22	# define AMD
	23	#endif
	24
4f1d9bd8 NC	25	#define L_LNNO_SIZE 2
4f1d9bd8 NC	26	#include "coff/external.h"
252b5132 RH	27
	28	/*
	29	** Magic numbers for Am29000
	30	** (AT&T will assign the "real" magic number)
	31	*/
	32
	33	#define SIPFBOMAGIC 0572 /* Am29000 (Byte 0 is MSB) */
	34	#define SIPRBOMAGIC 0573 /* Am29000 (Byte 0 is LSB) */
	35
252b5132 RH	36	#define A29K_MAGIC_BIG SIPFBOMAGIC
252b5132 RH	37	#define A29K_MAGIC_LITTLE SIPRBOMAGIC
4f1d9bd8 NC	38	#define A29KBADMAG(x) ( ((x).f_magic != A29K_MAGIC_BIG) && \
4f1d9bd8 NC	39	((x).f_magic != A29K_MAGIC_LITTLE))
252b5132 RH	40
	41	#define OMAGIC A29K_MAGIC_BIG
	42	/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
	43
	44	/*
	45	** File header flags currently known to us.
	46	**
	47	** Am29000 will use the F_AR32WR and F_AR32W flags to indicate
	48	** the byte ordering in the file.
	49	*/
	50
	51	/--------------------------------------------------------------/
	52
252b5132 RH	53
	54	/* aouthdr magic numbers */
	55	#define NMAGIC 0410 /* separate i/d executable */
	56	#define SHMAGIC 0406 /* NYU/Ultra3 shared data executable
	57	(writable text) */
252b5132 RH	58	#define _ETEXT "_etext"
	59
	60	/--------------------------------------------------------------/
	61
252b5132	62
4f1d9bd8	63	/* More names of "special" sections. */
252b5132 RH	64	#define _LIT ".lit"
	65
	66	/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
	67
	68	/*
	69	** Section types - with additional section type for global
	70	** registers which will be relocatable for the Am29000.
	71	**
	72	** In instances where it is necessary for a linker to produce an
	73	** output file which contains text or data not based at virtual
	74	** address 0, e.g. for a ROM, then the linker should accept
	75	** address base information as command input and use PAD sections
	76	** to skip over unused addresses.
	77	*/
	78
	79	#define STYP_BSSREG 0x1200 /* Global register area (like STYP_INFO) */
	80	#define STYP_ENVIR 0x2200 /* Environment (like STYP_INFO) */
	81	#define STYP_ABS 0x4000 /* Absolute (allocated, not reloc, loaded) */
	82
	83	/--------------------------------------------------------------/
	84
	85	/*
	86	** Relocation information declaration and related definitions
	87	*/
	88
4f1d9bd8 NC	89	struct external_reloc
4f1d9bd8 NC	90	{
252b5132 RH	91	char r_vaddr[4]; /* (virtual) address of reference */
	92	char r_symndx[4]; /* index into symbol table */
	93	char r_type[2]; /* relocation type */
	94	};
	95
	96	#define RELOC struct external_reloc
	97	#define RELSZ 10 /* sizeof (RELOC) */
	98
	99	/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
	100
	101	/*
	102	** Relocation types for the Am29000
	103	*/
	104
	105	#define R_ABS 0 /* reference is absolute */
	106
	107	#define R_IREL 030 /* instruction relative (jmp/call) */
	108	#define R_IABS 031 /* instruction absolute (jmp/call) */
	109	#define R_ILOHALF 032 /* instruction low half (const) */
	110	#define R_IHIHALF 033 /* instruction high half (consth) part 1 */
	111	#define R_IHCONST 034 /* instruction high half (consth) part 2 */
	112	/* constant offset of R_IHIHALF relocation */
	113	#define R_BYTE 035 /* relocatable byte value */
	114	#define R_HWORD 036 /* relocatable halfword value */
	115	#define R_WORD 037 /* relocatable word value */
	116
	117	#define R_IGLBLRC 040 /* instruction global register RC */
	118	#define R_IGLBLRA 041 /* instruction global register RA */
	119	#define R_IGLBLRB 042 /* instruction global register RB */
	120
	121	/*
	122	NOTE:
	123	All the "I" forms refer to 29000 instruction formats. The linker is
	124	expected to know how the numeric information is split and/or aligned
	125	within the instruction word(s). R_BYTE works for instructions, too.
	126
	127	If the parameter to a CONSTH instruction is a relocatable type, two
	128	relocation records are written. The first has an r_type of R_IHIHALF
	129	(33 octal) and a normal r_vaddr and r_symndx. The second relocation
	130	record has an r_type of R_IHCONST (34 octal), a normal r_vaddr (which
	131	is redundant), and an r_symndx containing the 32-bit constant offset
	132	to the relocation instead of the actual symbol table index. This
	133	second record is always written, even if the constant offset is zero.
	134	The constant fields of the instruction are set to zero.
	135	*/
	136
	137	/--------------------------------------------------------------/
	138
252b5132 RH	139	/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
	140
	141	/*
	142	** Storage class definitions - new classes for global registers.
	143	*/
	144
	145	#define C_GLBLREG 19 /* global register */
	146	#define C_EXTREG 20 /* external global register */
	147	#define C_DEFREG 21 /* ext. def. of global register */