[deliverable/binutils-gdb.git] / gas / config / tc-alpha.h

/* This file is tc-alpha.h
   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000
   Free Software Foundation, Inc.
   Written by Ken Raeburn <raeburn@cygnus.com>.

   This file is part of GAS, the GNU Assembler.

   GAS 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, or (at your option)
   any later version.

   GAS 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 GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  */

#define TC_ALPHA

#define TARGET_BYTES_BIG_ENDIAN 0

#define WORKING_DOT_WORD

#define TARGET_ARCH			bfd_arch_alpha

#define TARGET_FORMAT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour	\
		       ? "ecoff-littlealpha"				\
		       : OUTPUT_FLAVOR == bfd_target_elf_flavour	\
		       ? "elf64-alpha"					\
		       : OUTPUT_FLAVOR == bfd_target_evax_flavour	\
		       ? "vms-alpha"					\
		       : "unknown-format")

#define NEED_LITERAL_POOL
#define TC_HANDLES_FX_DONE
#define REPEAT_CONS_EXPRESSIONS

extern int alpha_force_relocation PARAMS ((struct fix *));
extern int alpha_fix_adjustable PARAMS ((struct fix *));

extern unsigned long alpha_gprmask, alpha_fprmask;
extern valueT alpha_gp_value;

#define TC_FORCE_RELOCATION(FIXP)	alpha_force_relocation (FIXP)
#define tc_fix_adjustable(FIXP)		alpha_fix_adjustable (FIXP)
#define RELOC_REQUIRES_SYMBOL
#define MD_APPLY_FIX3

/* This expression evaluates to false if the relocation is for a local
   object for which we still want to do the relocation at runtime.
   True if we are willing to perform this relocation while building
   the .o file.  This is only used for pcrel relocations.  */

#define TC_RELOC_RTSYM_LOC_FIXUP(FIX)				\
  ((FIX)->fx_addsy == NULL					\
   || (! S_IS_EXTERNAL ((FIX)->fx_addsy)			\
       && ! S_IS_WEAK ((FIX)->fx_addsy)				\
       && S_IS_DEFINED ((FIX)->fx_addsy)			\
       && ! S_IS_COMMON ((FIX)->fx_addsy)))

#define md_convert_frag(b,s,f)		as_fatal ("alpha convert_frag\n")
#define md_estimate_size_before_relax(f,s) \
			(as_fatal ("estimate_size_before_relax called"),1)
#define md_operand(x)

#ifdef OBJ_EVAX

/* This field keeps the symbols position in the link section.  */
#define OBJ_SYMFIELD_TYPE valueT

#define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) \
      fix_new_exp (FRAG, OFF, (int)LEN, EXP, 0, \
	LEN == 2 ? BFD_RELOC_16 \
	: LEN == 4 ? BFD_RELOC_32 \
	: LEN == 8 ? BFD_RELOC_64 \
	: BFD_RELOC_ALPHA_LINKAGE);
#endif

#define md_number_to_chars		number_to_chars_littleendian

extern int tc_get_register PARAMS ((int frame));
extern void alpha_frob_ecoff_data PARAMS ((void));

#define tc_frob_label(sym) alpha_define_label (sym)
extern void alpha_define_label PARAMS ((symbolS *));

#define md_cons_align(nbytes) alpha_cons_align (nbytes)
extern void alpha_cons_align PARAMS ((int));

#define HANDLE_ALIGN(fragp) alpha_handle_align (fragp)
extern void alpha_handle_align PARAMS ((struct frag *));

#define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 8)

#ifdef OBJ_ECOFF
#define tc_frob_file_before_adjust() alpha_frob_file_before_adjust ()
extern void alpha_frob_file_before_adjust PARAMS ((void));
#endif

#define DIFF_EXPR_OK   /* foo-. gets turned into PC relative relocs */

#ifdef OBJ_ELF
#define ELF_TC_SPECIAL_SECTIONS \
  { ".sdata",   SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL  }, \
  { ".sbss",    SHT_NOBITS,     SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL  },
#endif

/* Whether to add support for explict !relocation_op!sequence_number.  At the
   moment, only do this for ELF, though ECOFF could use it as well.  */

#ifdef OBJ_ELF
#define RELOC_OP_P
#endif

#ifdef RELOC_OP_P
/* Before the relocations are written, reorder them, so that user supplied
   !lituse relocations follow the appropriate !literal relocations.  Also
   convert the gas-internal relocations to the appropriate linker relocations.
   */
#define tc_adjust_symtab() alpha_adjust_symtab ()
extern void alpha_adjust_symtab PARAMS ((void));

/* New fields for supporting explicit relocations (such as !literal to mark
   where a pointer is loaded from the global table, and !lituse_base to track
   all of the normal uses of that pointer).  */

#define TC_FIX_TYPE struct alpha_fix_tag

struct alpha_fix_tag
{
  struct fix *next_lituse;		/* next !lituse */
  struct alpha_literal_tag *info;	/* other members with same sequence */
};

/* Initialize the TC_FIX_TYPE field.  */
#define TC_INIT_FIX_DATA(fixP)						\
do {									\
  fixP->tc_fix_data.next_lituse = (struct fix *)0;			\
  fixP->tc_fix_data.info = (struct alpha_literal_tag *)0;		\
} while (0)

/* Work with DEBUG5 to print fields in tc_fix_type.  */
#define TC_FIX_DATA_PRINT(stream,fixP)					\
do {									\
  if (fixP->tc_fix_data.info)						\
    fprintf (stderr, "\tinfo = 0x%lx, next_lituse = 0x%lx\n", \
	     (long)fixP->tc_fix_data.info,				\
	     (long)fixP->tc_fix_data.next_lituse);			\
} while (0)
#endif

#define DWARF2_LINE_MIN_INSN_LENGTH 4
Commit	Line	Data
252b5132	1	/* This file is tc-alpha.h
f7e42eb4 NC	2	Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000
f7e42eb4 NC	3	Free Software Foundation, Inc.
252b5132 RH	4	Written by Ken Raeburn <raeburn@cygnus.com>.
	5
	6	This file is part of GAS, the GNU Assembler.
	7
	8	GAS is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2, or (at your option)
	11	any later version.
	12
	13	GAS is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with GAS; see the file COPYING. If not, write to the Free
	20	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
	21	02111-1307, USA. */
	22
	23	#define TC_ALPHA
	24
	25	#define TARGET_BYTES_BIG_ENDIAN 0
	26
	27	#define WORKING_DOT_WORD
	28
	29	#define TARGET_ARCH bfd_arch_alpha
	30
	31	#define TARGET_FORMAT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
	32	? "ecoff-littlealpha" \
	33	: OUTPUT_FLAVOR == bfd_target_elf_flavour \
	34	? "elf64-alpha" \
	35	: OUTPUT_FLAVOR == bfd_target_evax_flavour \
	36	? "vms-alpha" \
	37	: "unknown-format")
	38
	39	#define NEED_LITERAL_POOL
	40	#define TC_HANDLES_FX_DONE
	41	#define REPEAT_CONS_EXPRESSIONS
	42
	43	extern int alpha_force_relocation PARAMS ((struct fix *));
	44	extern int alpha_fix_adjustable PARAMS ((struct fix *));
	45
	46	extern unsigned long alpha_gprmask, alpha_fprmask;
	47	extern valueT alpha_gp_value;
	48
	49	#define TC_FORCE_RELOCATION(FIXP) alpha_force_relocation (FIXP)
	50	#define tc_fix_adjustable(FIXP) alpha_fix_adjustable (FIXP)
	51	#define RELOC_REQUIRES_SYMBOL
ca3f7695	52	#define MD_APPLY_FIX3
252b5132 RH	53
	54	/* This expression evaluates to false if the relocation is for a local
	55	object for which we still want to do the relocation at runtime.
	56	True if we are willing to perform this relocation while building
	57	the .o file. This is only used for pcrel relocations. */
	58
	59	#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
	60	((FIX)->fx_addsy == NULL \
	61	\|\| (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
	62	&& ! S_IS_WEAK ((FIX)->fx_addsy) \
	63	&& S_IS_DEFINED ((FIX)->fx_addsy) \
	64	&& ! S_IS_COMMON ((FIX)->fx_addsy)))
	65
	66	#define md_convert_frag(b,s,f) as_fatal ("alpha convert_frag\n")
	67	#define md_estimate_size_before_relax(f,s) \
07726851	68	(as_fatal ("estimate_size_before_relax called"),1)
252b5132 RH	69	#define md_operand(x)
	70
	71	#ifdef OBJ_EVAX
	72
	73	/* This field keeps the symbols position in the link section. */
	74	#define OBJ_SYMFIELD_TYPE valueT
	75
	76	#define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) \
	77	fix_new_exp (FRAG, OFF, (int)LEN, EXP, 0, \
	78	LEN == 2 ? BFD_RELOC_16 \
	79	: LEN == 4 ? BFD_RELOC_32 \
	80	: LEN == 8 ? BFD_RELOC_64 \
	81	: BFD_RELOC_ALPHA_LINKAGE);
	82	#endif
	83
	84	#define md_number_to_chars number_to_chars_littleendian
	85
	86	extern int tc_get_register PARAMS ((int frame));
	87	extern void alpha_frob_ecoff_data PARAMS ((void));
	88
	89	#define tc_frob_label(sym) alpha_define_label (sym)
49309057	90	extern void alpha_define_label PARAMS ((symbolS *));
252b5132 RH	91
	92	#define md_cons_align(nbytes) alpha_cons_align (nbytes)
	93	extern void alpha_cons_align PARAMS ((int));
	94
0a9ef439 RH	95	#define HANDLE_ALIGN(fragp) alpha_handle_align (fragp)
	96	extern void alpha_handle_align PARAMS ((struct frag *));
	97
	98	#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4 + 8)
	99
252b5132 RH	100	#ifdef OBJ_ECOFF
	101	#define tc_frob_file_before_adjust() alpha_frob_file_before_adjust ()
	102	extern void alpha_frob_file_before_adjust PARAMS ((void));
	103	#endif
	104
	105	#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
	106
	107	#ifdef OBJ_ELF
	108	#define ELF_TC_SPECIAL_SECTIONS \
	109	{ ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, \
	110	{ ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL },
	111	#endif
43b4c25e MM	112
	113	/* Whether to add support for explict !relocation_op!sequence_number. At the
	114	moment, only do this for ELF, though ECOFF could use it as well. */
	115
	116	#ifdef OBJ_ELF
	117	#define RELOC_OP_P
	118	#endif
	119
	120	#ifdef RELOC_OP_P
	121	/* Before the relocations are written, reorder them, so that user supplied
	122	!lituse relocations follow the appropriate !literal relocations. Also
	123	convert the gas-internal relocations to the appropriate linker relocations.
	124	*/
	125	#define tc_adjust_symtab() alpha_adjust_symtab ()
	126	extern void alpha_adjust_symtab PARAMS ((void));
	127
	128	/* New fields for supporting explicit relocations (such as !literal to mark
	129	where a pointer is loaded from the global table, and !lituse_base to track
	130	all of the normal uses of that pointer). */
	131
	132	#define TC_FIX_TYPE struct alpha_fix_tag
	133
	134	struct alpha_fix_tag
	135	{
	136	struct fix next_lituse; / next !lituse */
	137	struct alpha_literal_tag info; / other members with same sequence */
	138	};
	139
	140	/* Initialize the TC_FIX_TYPE field. */
	141	#define TC_INIT_FIX_DATA(fixP) \
	142	do { \
	143	fixP->tc_fix_data.next_lituse = (struct fix *)0; \
	144	fixP->tc_fix_data.info = (struct alpha_literal_tag *)0; \
	145	} while (0)
	146
	147	/* Work with DEBUG5 to print fields in tc_fix_type. */
	148	#define TC_FIX_DATA_PRINT(stream,fixP) \
	149	do { \
	150	if (fixP->tc_fix_data.info) \
	151	fprintf (stderr, "\tinfo = 0x%lx, next_lituse = 0x%lx\n", \
	152	(long)fixP->tc_fix_data.info, \
	153	(long)fixP->tc_fix_data.next_lituse); \
	154	} while (0)
	155	#endif
4dc7ead9 RH	156
4dc7ead9 RH	157	#define DWARF2_LINE_MIN_INSN_LENGTH 4