1 /* tc-ia64.h -- Header file for tc-ia64.c.
2 Copyright (C) 1998-2019 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of GAS, the GNU Assembler.
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 3, or (at your option)
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.
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, 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
22 #include "opcode/ia64.h"
27 /* Linux is little endian by default. HPUX is big endian by default. */
29 #define TARGET_BYTES_BIG_ENDIAN 1
30 #define MD_FLAGS_DEFAULT EF_IA_64_BE
32 #define TARGET_BYTES_BIG_ENDIAN 0
33 #define MD_FLAGS_DEFAULT EF_IA_64_ABI64
36 extern void (*ia64_number_to_chars
) (char *, valueT
, int);
37 #define md_number_to_chars (*ia64_number_to_chars)
39 extern void ia64_elf_section_change_hook (void);
40 #define md_elf_section_change_hook ia64_elf_section_change_hook
42 /* We record the endian for this section. 0 means default, 1 means
43 big endian and 2 means little endian. */
44 struct ia64_segment_info_type
46 unsigned int endian
: 2;
49 #define TC_SEGMENT_INFO_TYPE struct ia64_segment_info_type
51 extern void ia64_adjust_symtab (void);
52 #define tc_adjust_symtab() ia64_adjust_symtab ()
54 extern void ia64_frob_file (void);
55 #define tc_frob_file() ia64_frob_file ()
57 /* We need to set the default object file format in ia64_init and not in
58 md_begin. This is because parse_args is called before md_begin, and we
59 do not want md_begin to wipe out the flag settings set by options parsed in
62 #define HOST_SPECIAL_INIT ia64_init
63 extern void ia64_init (int, char **);
65 #define TARGET_FORMAT ia64_target_format()
66 extern const char *ia64_target_format (void);
68 #define TARGET_ARCH bfd_arch_ia64
69 #define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */
71 #define NEED_LITERAL_POOL /* need gp literal pool */
72 #define RELOC_REQUIRES_SYMBOL
73 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
74 #define NEED_INDEX_OPERATOR /* [ ] is index operator */
76 #define QUOTES_IN_INSN /* allow `string "foo;bar"' */
77 #define LEX_AT (LEX_NAME|LEX_BEGIN_NAME) /* allow `@' inside name */
78 #define LEX_QM (LEX_NAME|LEX_BEGIN_NAME) /* allow `?' inside name */
79 #define LEX_HASH LEX_END_NAME /* allow `#' ending a name */
81 #define TC_PREDICATE_START_CHAR '('
82 #define TC_PREDICATE_END_CHAR ')'
84 extern const char ia64_symbol_chars
[];
85 #define tc_symbol_chars ia64_symbol_chars
87 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
91 int bigendian
; /* byte order at fix location */
95 extern void ia64_end_of_source (void);
96 extern void ia64_start_line (void);
97 extern int ia64_unrecognized_line (int);
98 extern void ia64_frob_label (struct symbol
*);
100 extern int ia64_frob_symbol (struct symbol
*);
102 extern void ia64_flush_pending_output (void);
103 extern int ia64_parse_name (char *, expressionS
*, char *);
104 extern int ia64_optimize_expr (expressionS
*, operatorT
, expressionS
*);
105 extern void ia64_cons_align (int);
106 extern void ia64_flush_insns (void);
107 extern int ia64_fix_adjustable (struct fix
*);
108 extern int ia64_force_relocation (struct fix
*);
109 extern void ia64_cons_fix_new (fragS
*, int, int, expressionS
*,
110 bfd_reloc_code_real_type
);
111 extern void ia64_validate_fix (struct fix
*);
112 extern char * ia64_canonicalize_symbol_name (char *);
113 extern bfd_vma
ia64_elf_section_letter (int, const char **);
114 extern flagword
ia64_elf_section_flags (flagword
, bfd_vma
, int);
115 extern int ia64_elf_section_type (const char *, size_t);
116 extern long ia64_pcrel_from_section (struct fix
*, segT
);
117 extern void ia64_md_do_align (int, const char *, int, int);
118 extern void ia64_handle_align (fragS
*);
119 extern void ia64_after_parse_args (void);
120 extern void ia64_dwarf2_emit_offset (symbolS
*, unsigned int);
121 extern void ia64_check_label (symbolS
*);
122 extern int ia64_estimate_size_before_relax (fragS
*, asection
*);
123 extern void ia64_convert_frag (fragS
*);
125 #define md_end() ia64_end_of_source ()
126 #define md_start_line_hook() ia64_start_line ()
127 #define tc_unrecognized_line(ch) ia64_unrecognized_line (ch)
128 #define tc_frob_label(s) ia64_frob_label (s)
130 #define tc_frob_symbol(s,p) p |= ia64_frob_symbol (s)
132 #define md_flush_pending_output() ia64_flush_pending_output ()
133 #define md_parse_name(s,e,m,c) ia64_parse_name (s, e, c)
134 #define md_register_arithmetic 0
135 #define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s)
136 #define tc_canonicalize_section_name(s) ia64_canonicalize_symbol_name (s)
137 #define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r)
138 #define md_cons_align(n) ia64_cons_align (n)
139 #define TC_FORCE_RELOCATION(f) ia64_force_relocation (f)
140 #define tc_fix_adjustable(f) ia64_fix_adjustable (f)
141 #define MD_APPLY_SYM_VALUE(FIX) 0
142 #define md_convert_frag(b,s,f) ia64_convert_frag (f)
143 #define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump")
144 #define md_create_short_jump(p,f,t,fr,s) \
145 as_fatal ("ia64_create_short_jump")
146 #define md_estimate_size_before_relax(f,s) \
147 ia64_estimate_size_before_relax(f,s)
148 #define md_elf_section_letter ia64_elf_section_letter
149 #define md_elf_section_flags ia64_elf_section_flags
150 #define TC_FIX_TYPE struct ia64_fix
151 #define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; }
152 #define TC_CONS_FIX_NEW(f,o,l,e,r) ia64_cons_fix_new (f, o, l, e, r)
153 #define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix)
154 #define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec)
155 #define md_section_align(seg,size) (size)
156 #define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m)
157 #define HANDLE_ALIGN(f) ia64_handle_align (f)
158 #define md_elf_section_type(str,len) ia64_elf_section_type (str, len)
159 #define md_after_parse_args() ia64_after_parse_args ()
160 #define TC_DWARF2_EMIT_OFFSET ia64_dwarf2_emit_offset
161 #define tc_check_label(l) ia64_check_label (l)
163 #define tc_init_after_args() ia64_vms_note ()
164 void ia64_vms_note (void);
167 /* Record if an alignment frag should end with a stop bit. */
168 #define TC_FRAG_TYPE int
169 #define TC_FRAG_INIT(FRAGP, MAX_BYTES) do {(FRAGP)->tc_frag_data = 0;}while (0)
171 /* Give an error if a frag containing code is not aligned to a 16 byte
173 #define md_frag_check(FRAGP) \
174 if ((FRAGP)->has_code \
175 && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 15) != 0) \
176 as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line, \
177 _("instruction address is not a multiple of 16"));
179 #define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16)
181 #define WORKING_DOT_WORD /* don't do broken word processing for now */
183 #define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */
185 /* This is the information required for unwind records in an ia64
186 object file. This is required by GAS and the compiler runtime. */
188 /* These are the starting point masks for the various types of
189 unwind records. To create a record of type R3 for instance, one
190 starts by using the value UNW_R3 and or-ing in any other required values.
191 These values are also unique (in context), so they can be used to identify
192 the various record types as well. UNW_Bx and some UNW_Px do have the
193 same value, but Px can only occur in a prologue context, and Bx in
218 /* These are all the various types of unwind records. */
222 prologue
, prologue_gr
, body
, mem_stack_f
, mem_stack_v
, psp_gr
, psp_sprel
,
223 rp_when
, rp_gr
, rp_br
, rp_psprel
, rp_sprel
, pfs_when
, pfs_gr
, pfs_psprel
,
224 pfs_sprel
, preds_when
, preds_gr
, preds_psprel
, preds_sprel
,
225 fr_mem
, frgr_mem
, gr_gr
, gr_mem
, br_mem
, br_gr
, spill_base
, spill_mask
,
226 unat_when
, unat_gr
, unat_psprel
, unat_sprel
, lc_when
, lc_gr
, lc_psprel
,
227 lc_sprel
, fpsr_when
, fpsr_gr
, fpsr_psprel
, fpsr_sprel
,
228 priunat_when_gr
, priunat_when_mem
, priunat_gr
, priunat_psprel
,
229 priunat_sprel
, bsp_when
, bsp_gr
, bsp_psprel
, bsp_sprel
, bspstore_when
,
230 bspstore_gr
, bspstore_psprel
, bspstore_sprel
, rnat_when
, rnat_gr
,
231 rnat_psprel
, rnat_sprel
, epilogue
, label_state
, copy_state
,
232 spill_psprel
, spill_sprel
, spill_reg
, spill_psprel_p
, spill_sprel_p
,
233 spill_reg_p
, unwabi
, endp
236 /* These structures declare the fields that can be used in each of the
237 4 record formats, R, P, B and X. */
239 typedef struct unw_r_record
242 unsigned short grmask
;
243 unsigned short grsave
;
244 /* masks to represent the union of save.g, save.f, save.b, and
246 unsigned long imask_size
;
251 unsigned char gr_mem
;
252 unsigned char br_mem
;
256 typedef struct unw_p_record
258 struct unw_rec_list
*next
;
271 unsigned char grmask
;
272 unsigned char brmask
;
275 unsigned char context
;
278 typedef struct unw_b_record
282 unsigned short ecount
;
285 typedef struct unw_x_record
291 unsigned long pspoff
;
296 unsigned short ab
; /* Value of the AB field.. */
297 unsigned short xy
; /* Value of the XY field.. */
300 /* This structure is used to determine the specific record type and
302 typedef struct unwind_record
304 unw_record_type type
;
313 /* This expression evaluates to true if the relocation is for a local
314 object for which we still want to do the relocation at runtime.
315 False if we are willing to perform this relocation while building
318 /* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field
319 which has no external reloc, so we must resolve the value now. */
321 #define TC_FORCE_RELOCATION_LOCAL(FIX) \
322 ((FIX)->fx_r_type != BFD_RELOC_UNUSED \
323 && (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
324 || (FIX)->fx_r_type == BFD_RELOC_IA64_PLTOFF22))
326 /* VMS backtraces expect dwarf version 3. */
328 #define DWARF2_VERSION 3
329 #define DWARF2_LINE_VERSION 3