[thirdparty/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,
	20	Boston, MA 02111-1307, USA. */
	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
113	object file. This is required by GAS and the compiler runtime. */
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
117	starts by using the value UNW_R3 and or-ing in any other required values.
118	These values are also unique (in context), so they can be used to identify
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,
154	lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
155	priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
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;
	162
	163
	164	/* These structures declare the fields that can be used in each of the
	165	4 record formats, R, P, B and X. */
	166
	167	typedef struct unw_r_record
	168	{
	169	unsigned long rlen;
e0c9811a	170	unsigned short grmask;
800eeca4	171	unsigned short grsave;
e0c9811a JW	172	/* masks to represent the union of save.g, save.f, save.b, and
	173	save.gf: */
	174	unsigned long imask_size;
	175	struct
	176	{
	177	unsigned char *i;
	178	unsigned long fr_mem;
	179	unsigned char gr_mem;
	180	unsigned char br_mem;
	181	} mask;
800eeca4 JW	182	} unw_r_record;
	183
	184	typedef struct unw_p_record
	185	{
	186	void *imask;
	187	unsigned long t;
	188	unsigned long size;
	189	unsigned long spoff;
	190	unsigned long br;
	191	unsigned long pspoff;
	192	unsigned short gr;
	193	unsigned short rmask;
	194	unsigned short grmask;
	195	unsigned long frmask;
	196	unsigned short brmask;
e0c9811a JW	197	unsigned char abi;
e0c9811a JW	198	unsigned char context;
800eeca4 JW	199	} unw_p_record;
	200
	201	typedef struct unw_b_record
	202	{
	203	unsigned long t;
	204	unsigned long label;
	205	unsigned short ecount;
	206	} unw_b_record;
	207
	208	typedef struct unw_x_record
	209	{
	210	unsigned long t;
	211	unsigned long spoff;
	212	unsigned long pspoff;
	213	unsigned short reg;
	214	unsigned short treg;
	215	unsigned short qp;
e0c9811a JW	216	unsigned short ab; /* Value of the AB field.. */
e0c9811a JW	217	unsigned short xy; /* Value of the XY field.. */
800eeca4 JW	218	} unw_x_record;
	219
	220	/* This structure is used to determine the specific record type and
	221	its fields. */
	222	typedef struct unwind_record
	223	{
	224	unw_record_type type;
	225	union {
	226	unw_r_record r;
	227	unw_p_record p;
	228	unw_b_record b;
	229	unw_x_record x;
	230	} record;
	231	} unwind_record;