[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

#define TARGET_FORMAT (OUTPUT_FLAVOR == bfd_target_elf_flavour		\
		       ? "elf64-ia64-little"				\
		       : "unknown-format")

#define TARGET_ARCH			bfd_arch_ia64
#define TARGET_BYTES_BIG_ENDIAN		0
#define DOUBLESLASH_LINE_COMMENTS	/* allow //-style comments */
#define md_number_to_chars		number_to_chars_littleendian
#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
	27	#define TARGET_FORMAT (OUTPUT_FLAVOR == bfd_target_elf_flavour \
	28	? "elf64-ia64-little" \
	29	: "unknown-format")
	30
	31	#define TARGET_ARCH bfd_arch_ia64
	32	#define TARGET_BYTES_BIG_ENDIAN 0
	33	#define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */
	34	#define md_number_to_chars number_to_chars_littleendian
	35	#define TC_HANDLES_FX_DONE
	36
	37	#define NEED_LITERAL_POOL /* need gp literal pool */
	38	#define RELOC_REQUIRES_SYMBOL
	39	#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
	40	#define NEED_INDEX_OPERATOR /* [ ] is index operator */
	41
	42	#define QUOTES_IN_INSN /* allow `string "foo;bar"' */
	43	#define LEX_AT LEX_NAME /* allow `@' inside name */
	44	#define LEX_QM LEX_NAME /* allow `?' inside name */
	45	#define LEX_HASH LEX_END_NAME /* allow `#' ending a name */
	46
	47	struct ia64_fix
	48	{
	49	int bigendian; /* byte order at fix location */
	50	enum ia64_opnd opnd;
	51	};
	52
	53	extern void ia64_do_align PARAMS((int n));
	54	extern void ia64_end_of_source PARAMS((void));
	55	extern void ia64_start_line PARAMS((void));
	56	extern int ia64_unrecognized_line PARAMS((int ch));
	57	extern void ia64_frob_label PARAMS((struct symbol *sym));
	58	extern void ia64_flush_pending_output PARAMS((void));
	59	extern int ia64_parse_name (char name, expressionS e);
	60	extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op,
	61	expressionS *r));
	62	extern void ia64_cons_align PARAMS((int));
	63	extern void ia64_flush_insns PARAMS((void));
	64	extern int ia64_fix_adjustable PARAMS((struct fix *fix));
	65	extern int ia64_force_relocation PARAMS((struct fix *));
	66	extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes,
	67	expressionS *exp));
	68	extern void ia64_validate_fix PARAMS ((struct fix *fix));
	69	extern char * ia64_canonicalize_symbol_name PARAMS ((char *));
	70	extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int));
	71	extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec));
	72	extern int ia64_md_do_align PARAMS ((int, const char *, int, int));
	73
	74	#define md_end() ia64_end_of_source ()
	75	#define md_start_line_hook() ia64_start_line ()
	76	#define tc_unrecognized_line(ch) ia64_unrecognized_line (ch)
	77	#define tc_frob_label(s) ia64_frob_label (s)
	78	#define md_flush_pending_output() ia64_flush_pending_output ()
	79	#define md_parse_name(s,e) ia64_parse_name (s, e)
	80	#define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s)
	81	#define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r)
	82	#define md_cons_align(n) ia64_cons_align (n)
	83	#define TC_FORCE_RELOCATION(f) ia64_force_relocation (f)
	84	#define tc_fix_adjustable(f) ia64_fix_adjustable (f)
85	#define md_convert_frag(b,s,f) as_fatal ("ia64_convert_frag")
86	#define md_create_long_jump(p,f,t,fr,s) as_fatal("ia64_create_long_jump")
87	#define md_create_short_jump(p,f,t,fr,s) \
88	as_fatal("ia64_create_short_jump")
89	#define md_estimate_size_before_relax(f,s) \
90	(as_fatal ("ia64_estimate_size_before_relax"), 1)
91	#define md_elf_section_flags ia64_elf_section_flags
92	#define TC_FIX_TYPE struct ia64_fix
93	#define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; }
94	#define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e)
95	#define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix)
96	#define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec)
97	#define md_do_align(n,f,l,m,j) if (ia64_md_do_align (n,f,l,m)) goto j
98
99	/* Call md_apply_fix3 with segment instead of md_apply_fix. */
100	#define MD_APPLY_FIX3
101
102	#define WORKING_DOT_WORD /* don't do broken word processing for now */
103
104	#define ELF_TC_SPECIAL_SECTIONS \
105	{ ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
106	{ ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
107	{ ".IA_64.unwind", SHT_IA_64_UNWIND, SHF_ALLOC }, \
108	{ ".IA_64.unwind_info", SHT_PROGBITS, SHF_ALLOC },
109
110	#define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */
111
112	/* This is the information required for unwind records in an ia64
4a4f25cf	113	object file. This is required by GAS and the compiler runtime. */
800eeca4 JW	114
	115	/* These are the starting point masks for the various types of
	116	unwind records. To create a record of type R3 for instance, one
4a4f25cf KH	117	starts by using the value UNW_R3 and or-ing in any other required values.
4a4f25cf KH	118	These values are also unique (in context), so they can be used to identify
800eeca4 JW	119	the various record types as well. UNW_Bx and some UNW_Px do have the
	120	same value, but Px can only occur in a prologue context, and Bx in
	121	a body context. */
	122
	123	#define UNW_R1 0x00
	124	#define UNW_R2 0x40
	125	#define UNW_R3 0x60
	126	#define UNW_P1 0x80
	127	#define UNW_P2 0xA0
	128	#define UNW_P3 0xB0
	129	#define UNW_P4 0xB8
	130	#define UNW_P5 0xB9
	131	#define UNW_P6 0xC0
	132	#define UNW_P7 0xE0
	133	#define UNW_P8 0xF0
	134	#define UNW_P9 0xF1
	135	#define UNW_P10 0xFF
	136	#define UNW_X1 0xF9
	137	#define UNW_X2 0xFA
	138	#define UNW_X3 0xFB
	139	#define UNW_X4 0xFC
	140	#define UNW_B1 0x80
	141	#define UNW_B2 0xC0
	142	#define UNW_B3 0xE0
	143	#define UNW_B4 0xF0
	144
	145	/* These are all the various types of unwind records. */
	146
	147	typedef enum
	148	{
	149	prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
	150	rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel,
	151	pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
	152	fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
	153	unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
4a4f25cf KH	154	lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
4a4f25cf KH	155	priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
800eeca4 JW	156	priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
	157	bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
	158	rnat_psprel, rnat_sprel, epilogue, label_state, copy_state,
	159	spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
e0c9811a	160	spill_reg_p, unwabi
800eeca4 JW	161	} unw_record_type;
800eeca4 JW	162
4a4f25cf	163	/* These structures declare the fields that can be used in each of the
800eeca4 JW	164	4 record formats, R, P, B and X. */
	165
	166	typedef struct unw_r_record
	167	{
	168	unsigned long rlen;
e0c9811a	169	unsigned short grmask;
800eeca4	170	unsigned short grsave;
e0c9811a JW	171	/* masks to represent the union of save.g, save.f, save.b, and
	172	save.gf: */
	173	unsigned long imask_size;
	174	struct
	175	{
	176	unsigned char *i;
	177	unsigned long fr_mem;
	178	unsigned char gr_mem;
	179	unsigned char br_mem;
	180	} mask;
800eeca4 JW	181	} unw_r_record;
	182
	183	typedef struct unw_p_record
	184	{
	185	void *imask;
	186	unsigned long t;
	187	unsigned long size;
	188	unsigned long spoff;
	189	unsigned long br;
	190	unsigned long pspoff;
	191	unsigned short gr;
	192	unsigned short rmask;
	193	unsigned short grmask;
	194	unsigned long frmask;
	195	unsigned short brmask;
e0c9811a JW	196	unsigned char abi;
e0c9811a JW	197	unsigned char context;
800eeca4 JW	198	} unw_p_record;
	199
	200	typedef struct unw_b_record
	201	{
	202	unsigned long t;
	203	unsigned long label;
	204	unsigned short ecount;
	205	} unw_b_record;
	206
	207	typedef struct unw_x_record
	208	{
	209	unsigned long t;
	210	unsigned long spoff;
	211	unsigned long pspoff;
	212	unsigned short reg;
	213	unsigned short treg;
	214	unsigned short qp;
e0c9811a JW	215	unsigned short ab; /* Value of the AB field.. */
e0c9811a JW	216	unsigned short xy; /* Value of the XY field.. */
800eeca4 JW	217	} unw_x_record;
800eeca4 JW	218
4a4f25cf	219	/* This structure is used to determine the specific record type and
800eeca4 JW	220	its fields. */
	221	typedef struct unwind_record
	222	{
	223	unw_record_type type;
	224	union {
	225	unw_r_record r;
	226	unw_p_record p;
	227	unw_b_record b;
	228	unw_x_record x;
	229	} record;
	230	} unwind_record;