[deliverable/binutils-gdb.git] / gas / config / tc-ia64.h

/* tc-ia64.h -- Header file for tc-ia64.c.
   Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
   Contributed by David Mosberger-Tang <davidm@hpl.hp.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.  */

#include <opcode/ia64.h>
#include <elf/ia64.h>

#define TC_IA64

/* Linux is little endian by default.  HPUX is big endian by default.  */
#ifdef TE_HPUX
#define md_number_to_chars		number_to_chars_bigendian
#define TARGET_BYTES_BIG_ENDIAN		1
#else
#define md_number_to_chars		number_to_chars_littleendian
#define TARGET_BYTES_BIG_ENDIAN		0
#endif /* TE_HPUX */

/* We need to set the default object file format in ia64_init and not in
   md_begin.  This is because parse_args is called before md_begin, and we
   do not want md_begin to wipe out the flag settings set by options parsed in
   md_parse_args.  */

#define HOST_SPECIAL_INIT ia64_init

#define TARGET_FORMAT ia64_target_format()
extern const char *ia64_target_format PARAMS ((void));

#define TARGET_ARCH			bfd_arch_ia64
#define DOUBLESLASH_LINE_COMMENTS	/* allow //-style comments */
#define TC_HANDLES_FX_DONE

#define NEED_LITERAL_POOL		/* need gp literal pool */
#define RELOC_REQUIRES_SYMBOL
#define DIFF_EXPR_OK   /* foo-. gets turned into PC relative relocs */
#define NEED_INDEX_OPERATOR		/* [ ] is index operator */

#define QUOTES_IN_INSN			/* allow `string "foo;bar"' */
#define LEX_AT		LEX_NAME	/* allow `@' inside name */
#define LEX_QM		LEX_NAME	/* allow `?' inside name */
#define LEX_HASH	LEX_END_NAME	/* allow `#' ending a name */

struct ia64_fix
  {
    int bigendian;			/* byte order at fix location */
    enum ia64_opnd opnd;
  };

extern void ia64_do_align PARAMS((int n));
extern void ia64_end_of_source PARAMS((void));
extern void ia64_start_line PARAMS((void));
extern int ia64_unrecognized_line PARAMS((int ch));
extern void ia64_frob_label PARAMS((struct symbol *sym));
extern void ia64_flush_pending_output PARAMS((void));
extern int ia64_parse_name (char *name, expressionS *e);
extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op,
				      expressionS *r));
extern void ia64_cons_align PARAMS((int));
extern void ia64_flush_insns PARAMS((void));
extern int ia64_fix_adjustable PARAMS((struct fix *fix));
extern int ia64_force_relocation PARAMS((struct fix *));
extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes,
				       expressionS *exp));
extern void ia64_validate_fix PARAMS ((struct fix *fix));
extern char * ia64_canonicalize_symbol_name PARAMS ((char *));
extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int));
extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec));
extern int ia64_md_do_align PARAMS ((int, const char *, int, int));

#define md_end()       			ia64_end_of_source ()
#define md_start_line_hook()		ia64_start_line ()
#define tc_unrecognized_line(ch)	ia64_unrecognized_line (ch)
#define tc_frob_label(s)		ia64_frob_label (s)
#define md_flush_pending_output()	ia64_flush_pending_output ()
#define md_parse_name(s,e)		ia64_parse_name (s, e)
#define tc_canonicalize_symbol_name(s)	ia64_canonicalize_symbol_name (s)
#define md_optimize_expr(l,o,r)		ia64_optimize_expr (l, o, r)
#define md_cons_align(n)		ia64_cons_align (n)
#define TC_FORCE_RELOCATION(f)		ia64_force_relocation (f)
#define tc_fix_adjustable(f)		ia64_fix_adjustable (f)
#define md_convert_frag(b,s,f)		as_fatal ("ia64_convert_frag")
#define md_create_long_jump(p,f,t,fr,s)	as_fatal("ia64_create_long_jump")
#define md_create_short_jump(p,f,t,fr,s) \
					as_fatal("ia64_create_short_jump")
#define md_estimate_size_before_relax(f,s) \
			(as_fatal ("ia64_estimate_size_before_relax"), 1)
#define md_elf_section_flags		ia64_elf_section_flags
#define TC_FIX_TYPE			struct ia64_fix
#define TC_INIT_FIX_DATA(f)		{ f->tc_fix_data.opnd = 0; }
#define TC_CONS_FIX_NEW(f,o,l,e)	ia64_cons_fix_new (f, o, l, e)
#define TC_VALIDATE_FIX(fix,seg,skip)	ia64_validate_fix (fix)
#define MD_PCREL_FROM_SECTION(fix,sec)	ia64_pcrel_from_section (fix, sec)
#define md_do_align(n,f,l,m,j)		if (ia64_md_do_align (n,f,l,m)) goto j

/* Call md_apply_fix3 with segment instead of md_apply_fix.  */
#define MD_APPLY_FIX3

#define WORKING_DOT_WORD	/* don't do broken word processing for now */

#define ELF_TC_SPECIAL_SECTIONS						   \
{ ".sbss",	SHT_NOBITS,	SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
{ ".sdata",	SHT_PROGBITS,	SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
{ ".IA_64.unwind",	SHT_IA_64_UNWIND,	SHF_ALLOC }, \
{ ".IA_64.unwind_info",	SHT_PROGBITS,		SHF_ALLOC },

#define DWARF2_LINE_MIN_INSN_LENGTH 1	/* so slot-multipliers can be 1 */

/* This is the information required for unwind records in an ia64
   object file. This is required by GAS and the compiler runtime.  */

/* These are the starting point masks for the various types of
   unwind records. To create a record of type R3 for instance, one
   starts by using the value UNW_R3 and or-ing in any other required values.
   These values are also unique (in context), so they can be used to identify
   the various record types as well. UNW_Bx and some UNW_Px do have the
   same value, but Px can only occur in a prologue context, and Bx in
   a body context.  */

#define UNW_R1	0x00
#define UNW_R2	0x40
#define UNW_R3	0x60
#define UNW_P1	0x80
#define UNW_P2	0xA0
#define UNW_P3	0xB0
#define UNW_P4	0xB8
#define UNW_P5	0xB9
#define UNW_P6	0xC0
#define UNW_P7	0xE0
#define UNW_P8	0xF0
#define UNW_P9	0xF1
#define UNW_P10	0xFF
#define UNW_X1	0xF9
#define UNW_X2	0xFA
#define UNW_X3	0xFB
#define UNW_X4	0xFC
#define UNW_B1	0x80
#define UNW_B2	0xC0
#define UNW_B3	0xE0
#define UNW_B4	0xF0

/* These are all the various types of unwind records.  */

typedef enum
{
  prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
  rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel,
  pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
  fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
  unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
  lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
  priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
  priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
  bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
  rnat_psprel, rnat_sprel, epilogue, label_state, copy_state,
  spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
  spill_reg_p, unwabi
} unw_record_type;

/* These structures declare the fields that can be used in each of the
   4 record formats, R, P, B and X.  */

typedef struct unw_r_record
{
  unsigned long rlen;
  unsigned short grmask;
  unsigned short grsave;
  /* masks to represent the union of save.g, save.f, save.b, and
     save.gf: */
  unsigned long imask_size;
  struct
  {
    unsigned char *i;
    unsigned long fr_mem;
    unsigned char gr_mem;
    unsigned char br_mem;
  } mask;
} unw_r_record;

typedef struct unw_p_record
{
  void *imask;
  unsigned long t;
  unsigned long size;
  unsigned long spoff;
  unsigned long br;
  unsigned long pspoff;
  unsigned short gr;
  unsigned short rmask;
  unsigned short grmask;
  unsigned long frmask;
  unsigned short brmask;
  unsigned char abi;
  unsigned char context;
} unw_p_record;

typedef struct unw_b_record
{
  unsigned long t;
  unsigned long label;
  unsigned short ecount;
} unw_b_record;

typedef struct unw_x_record
{
  unsigned long t;
  unsigned long spoff;
  unsigned long pspoff;
  unsigned short reg;
  unsigned short treg;
  unsigned short qp;
  unsigned short ab;	/* Value of the AB field..  */
  unsigned short xy;	/* Value of the XY field..  */
} unw_x_record;

/* This structure is used to determine the specific record type and
   its fields.  */
typedef struct unwind_record
{
  unw_record_type type;
  union {
    unw_r_record r;
    unw_p_record p;
    unw_b_record b;
    unw_x_record x;
  } record;
} unwind_record;
Commit	Line	Data
800eeca4	1	/* tc-ia64.h -- Header file for tc-ia64.c.
e0c9811a	2	Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
800eeca4 JW	3	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
	4
	5	This file is part of GAS, the GNU Assembler.
	6
	7	GAS is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2, or (at your option)
	10	any later version.
	11
	12	GAS is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GAS; see the file COPYING. If not, write to
	19	the Free Software Foundation, 59 Temple Place - Suite 330,
4a4f25cf	20	Boston, MA 02111-1307, USA. */
800eeca4 JW	21
	22	#include <opcode/ia64.h>
	23	#include <elf/ia64.h>
	24
	25	#define TC_IA64
	26
44f5c83a JW	27	/* Linux is little endian by default. HPUX is big endian by default. */
	28	#ifdef TE_HPUX
	29	#define md_number_to_chars number_to_chars_bigendian
	30	#define TARGET_BYTES_BIG_ENDIAN 1
	31	#else
	32	#define md_number_to_chars number_to_chars_littleendian
	33	#define TARGET_BYTES_BIG_ENDIAN 0
	34	#endif /* TE_HPUX */
	35
	36	/* We need to set the default object file format in ia64_init and not in
	37	md_begin. This is because parse_args is called before md_begin, and we
	38	do not want md_begin to wipe out the flag settings set by options parsed in
	39	md_parse_args. */
	40
	41	#define HOST_SPECIAL_INIT ia64_init
	42
	43	#define TARGET_FORMAT ia64_target_format()
	44	extern const char *ia64_target_format PARAMS ((void));
800eeca4 JW	45
800eeca4 JW	46	#define TARGET_ARCH bfd_arch_ia64
800eeca4	47	#define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */
800eeca4 JW	48	#define TC_HANDLES_FX_DONE
	49
	50	#define NEED_LITERAL_POOL /* need gp literal pool */
	51	#define RELOC_REQUIRES_SYMBOL
	52	#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
	53	#define NEED_INDEX_OPERATOR /* [ ] is index operator */
	54
	55	#define QUOTES_IN_INSN /* allow `string "foo;bar"' */
	56	#define LEX_AT LEX_NAME /* allow `@' inside name */
	57	#define LEX_QM LEX_NAME /* allow `?' inside name */
	58	#define LEX_HASH LEX_END_NAME /* allow `#' ending a name */
	59
	60	struct ia64_fix
	61	{
	62	int bigendian; /* byte order at fix location */
	63	enum ia64_opnd opnd;
	64	};
	65
	66	extern void ia64_do_align PARAMS((int n));
	67	extern void ia64_end_of_source PARAMS((void));
	68	extern void ia64_start_line PARAMS((void));
	69	extern int ia64_unrecognized_line PARAMS((int ch));
	70	extern void ia64_frob_label PARAMS((struct symbol *sym));
	71	extern void ia64_flush_pending_output PARAMS((void));
	72	extern int ia64_parse_name (char name, expressionS e);
	73	extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op,
	74	expressionS *r));
	75	extern void ia64_cons_align PARAMS((int));
	76	extern void ia64_flush_insns PARAMS((void));
	77	extern int ia64_fix_adjustable PARAMS((struct fix *fix));
	78	extern int ia64_force_relocation PARAMS((struct fix *));
	79	extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes,
	80	expressionS *exp));
	81	extern void ia64_validate_fix PARAMS ((struct fix *fix));
	82	extern char * ia64_canonicalize_symbol_name PARAMS ((char *));
	83	extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int));
	84	extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec));
	85	extern int ia64_md_do_align PARAMS ((int, const char *, int, int));
	86
	87	#define md_end() ia64_end_of_source ()
	88	#define md_start_line_hook() ia64_start_line ()
	89	#define tc_unrecognized_line(ch) ia64_unrecognized_line (ch)
	90	#define tc_frob_label(s) ia64_frob_label (s)
	91	#define md_flush_pending_output() ia64_flush_pending_output ()
	92	#define md_parse_name(s,e) ia64_parse_name (s, e)
	93	#define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s)
	94	#define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r)
	95	#define md_cons_align(n) ia64_cons_align (n)
	96	#define TC_FORCE_RELOCATION(f) ia64_force_relocation (f)
	97	#define tc_fix_adjustable(f) ia64_fix_adjustable (f)
	98	#define md_convert_frag(b,s,f) as_fatal ("ia64_convert_frag")
	99	#define md_create_long_jump(p,f,t,fr,s) as_fatal("ia64_create_long_jump")
	100	#define md_create_short_jump(p,f,t,fr,s) \
	101	as_fatal("ia64_create_short_jump")
	102	#define md_estimate_size_before_relax(f,s) \
	103	(as_fatal ("ia64_estimate_size_before_relax"), 1)
	104	#define md_elf_section_flags ia64_elf_section_flags
	105	#define TC_FIX_TYPE struct ia64_fix
	106	#define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; }
	107	#define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e)
	108	#define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix)
	109	#define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec)
	110	#define md_do_align(n,f,l,m,j) if (ia64_md_do_align (n,f,l,m)) goto j
	111
112	/* Call md_apply_fix3 with segment instead of md_apply_fix. */
113	#define MD_APPLY_FIX3
114
115	#define WORKING_DOT_WORD /* don't do broken word processing for now */
116
117	#define ELF_TC_SPECIAL_SECTIONS \
118	{ ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
119	{ ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
120	{ ".IA_64.unwind", SHT_IA_64_UNWIND, SHF_ALLOC }, \
121	{ ".IA_64.unwind_info", SHT_PROGBITS, SHF_ALLOC },
122
123	#define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */
124
125	/* This is the information required for unwind records in an ia64
4a4f25cf	126	object file. This is required by GAS and the compiler runtime. */
800eeca4 JW	127
	128	/* These are the starting point masks for the various types of
	129	unwind records. To create a record of type R3 for instance, one
4a4f25cf KH	130	starts by using the value UNW_R3 and or-ing in any other required values.
4a4f25cf KH	131	These values are also unique (in context), so they can be used to identify
800eeca4 JW	132	the various record types as well. UNW_Bx and some UNW_Px do have the
	133	same value, but Px can only occur in a prologue context, and Bx in
	134	a body context. */
	135
	136	#define UNW_R1 0x00
	137	#define UNW_R2 0x40
	138	#define UNW_R3 0x60
	139	#define UNW_P1 0x80
	140	#define UNW_P2 0xA0
	141	#define UNW_P3 0xB0
	142	#define UNW_P4 0xB8
	143	#define UNW_P5 0xB9
	144	#define UNW_P6 0xC0
	145	#define UNW_P7 0xE0
	146	#define UNW_P8 0xF0
	147	#define UNW_P9 0xF1
	148	#define UNW_P10 0xFF
	149	#define UNW_X1 0xF9
	150	#define UNW_X2 0xFA
	151	#define UNW_X3 0xFB
	152	#define UNW_X4 0xFC
	153	#define UNW_B1 0x80
	154	#define UNW_B2 0xC0
	155	#define UNW_B3 0xE0
	156	#define UNW_B4 0xF0
	157
	158	/* These are all the various types of unwind records. */
	159
	160	typedef enum
	161	{
	162	prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
	163	rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel,
	164	pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
	165	fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
	166	unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
4a4f25cf KH	167	lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
4a4f25cf KH	168	priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
800eeca4 JW	169	priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
	170	bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
	171	rnat_psprel, rnat_sprel, epilogue, label_state, copy_state,
	172	spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
e0c9811a	173	spill_reg_p, unwabi
800eeca4 JW	174	} unw_record_type;
800eeca4 JW	175
4a4f25cf	176	/* These structures declare the fields that can be used in each of the
800eeca4 JW	177	4 record formats, R, P, B and X. */
	178
	179	typedef struct unw_r_record
	180	{
	181	unsigned long rlen;
e0c9811a	182	unsigned short grmask;
800eeca4	183	unsigned short grsave;
e0c9811a JW	184	/* masks to represent the union of save.g, save.f, save.b, and
	185	save.gf: */
	186	unsigned long imask_size;
	187	struct
	188	{
	189	unsigned char *i;
	190	unsigned long fr_mem;
	191	unsigned char gr_mem;
	192	unsigned char br_mem;
	193	} mask;
800eeca4 JW	194	} unw_r_record;
	195
	196	typedef struct unw_p_record
	197	{
	198	void *imask;
	199	unsigned long t;
	200	unsigned long size;
	201	unsigned long spoff;
	202	unsigned long br;
	203	unsigned long pspoff;
	204	unsigned short gr;
	205	unsigned short rmask;
	206	unsigned short grmask;
	207	unsigned long frmask;
	208	unsigned short brmask;
e0c9811a JW	209	unsigned char abi;
e0c9811a JW	210	unsigned char context;
800eeca4 JW	211	} unw_p_record;
	212
	213	typedef struct unw_b_record
	214	{
	215	unsigned long t;
	216	unsigned long label;
	217	unsigned short ecount;
	218	} unw_b_record;
	219
	220	typedef struct unw_x_record
	221	{
	222	unsigned long t;
	223	unsigned long spoff;
	224	unsigned long pspoff;
	225	unsigned short reg;
	226	unsigned short treg;
	227	unsigned short qp;
e0c9811a JW	228	unsigned short ab; /* Value of the AB field.. */
e0c9811a JW	229	unsigned short xy; /* Value of the XY field.. */
800eeca4 JW	230	} unw_x_record;
800eeca4 JW	231
4a4f25cf	232	/* This structure is used to determine the specific record type and
800eeca4 JW	233	its fields. */
	234	typedef struct unwind_record
	235	{
	236	unw_record_type type;
	237	union {
	238	unw_r_record r;
	239	unw_p_record p;
	240	unw_b_record b;
	241	unw_x_record x;
	242	} record;
	243	} unwind_record;