1 /* tc-ia64.h -- Header file for tc-ia64.c.
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
6 This file is part of GAS, the GNU Assembler.
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 3, or (at your option)
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.
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
20 the Free Software Foundation, 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 #include "opcode/ia64.h"
28 /* Linux is little endian by default. HPUX is big endian by default. */
30 #define TARGET_BYTES_BIG_ENDIAN 1
31 #define MD_FLAGS_DEFAULT EF_IA_64_BE
33 #define TARGET_BYTES_BIG_ENDIAN 0
34 #define MD_FLAGS_DEFAULT EF_IA_64_ABI64
37 extern void (*ia64_number_to_chars) (char *, valueT, int);
38 #define md_number_to_chars (*ia64_number_to_chars)
40 extern void ia64_elf_section_change_hook (void);
41 #define md_elf_section_change_hook ia64_elf_section_change_hook
43 /* We record the endian for this section. 0 means default, 1 means
44 big endian and 2 means little endian. */
45 struct ia64_segment_info_type
47 unsigned int endian : 2;
50 #define TC_SEGMENT_INFO_TYPE struct ia64_segment_info_type
52 extern void ia64_adjust_symtab (void);
53 #define tc_adjust_symtab() ia64_adjust_symtab ()
55 extern void ia64_frob_file (void);
56 #define tc_frob_file() ia64_frob_file ()
58 /* We need to set the default object file format in ia64_init and not in
59 md_begin. This is because parse_args is called before md_begin, and we
60 do not want md_begin to wipe out the flag settings set by options parsed in
63 #define HOST_SPECIAL_INIT ia64_init
64 extern void ia64_init (int, char **);
66 #define TARGET_FORMAT ia64_target_format()
67 extern const char *ia64_target_format (void);
69 #define TARGET_ARCH bfd_arch_ia64
70 #define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */
72 #define NEED_LITERAL_POOL /* need gp literal pool */
73 #define RELOC_REQUIRES_SYMBOL
74 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
75 #define NEED_INDEX_OPERATOR /* [ ] is index operator */
77 #define QUOTES_IN_INSN /* allow `string "foo;bar"' */
78 #define LEX_AT (LEX_NAME|LEX_BEGIN_NAME) /* allow `@' inside name */
79 #define LEX_QM (LEX_NAME|LEX_BEGIN_NAME) /* allow `?' inside name */
80 #define LEX_HASH LEX_END_NAME /* allow `#' ending a name */
82 extern const char ia64_symbol_chars[];
83 #define tc_symbol_chars ia64_symbol_chars
85 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
89 int bigendian; /* byte order at fix location */
93 extern void ia64_end_of_source (void);
94 extern void ia64_start_line (void);
95 extern int ia64_unrecognized_line (int);
96 extern void ia64_frob_label (struct symbol *);
98 extern int ia64_frob_symbol (struct symbol *);
100 extern void ia64_flush_pending_output (void);
101 extern int ia64_parse_name (char *, expressionS *, char *);
102 extern int ia64_optimize_expr (expressionS *, operatorT, expressionS *);
103 extern void ia64_cons_align (int);
104 extern void ia64_flush_insns (void);
105 extern int ia64_fix_adjustable (struct fix *);
106 extern int ia64_force_relocation (struct fix *);
107 extern void ia64_cons_fix_new (fragS *, int, int, expressionS *);
108 extern void ia64_validate_fix (struct fix *);
109 extern char * ia64_canonicalize_symbol_name (char *);
110 extern int ia64_elf_section_letter (int, char **);
111 extern flagword ia64_elf_section_flags (flagword, int, int);
112 extern int ia64_elf_section_type (const char *, size_t);
113 extern long ia64_pcrel_from_section (struct fix *, segT);
114 extern void ia64_md_do_align (int, const char *, int, int);
115 extern void ia64_handle_align (fragS *);
116 extern void ia64_after_parse_args (void);
117 extern void ia64_dwarf2_emit_offset (symbolS *, unsigned int);
118 extern void ia64_check_label (symbolS *);
119 extern int ia64_estimate_size_before_relax (fragS *, asection *);
120 extern void ia64_convert_frag (fragS *);
122 #define md_end() ia64_end_of_source ()
123 #define md_start_line_hook() ia64_start_line ()
124 #define tc_unrecognized_line(ch) ia64_unrecognized_line (ch)
125 #define tc_frob_label(s) ia64_frob_label (s)
127 #define tc_frob_symbol(s,p) p |= ia64_frob_symbol (s)
129 #define md_flush_pending_output() ia64_flush_pending_output ()
130 #define md_parse_name(s,e,m,c) ia64_parse_name (s, e, c)
131 #define md_register_arithmetic 0
132 #define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s)
133 #define tc_canonicalize_section_name(s) ia64_canonicalize_symbol_name (s)
134 #define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r)
135 #define md_cons_align(n) ia64_cons_align (n)
136 #define TC_FORCE_RELOCATION(f) ia64_force_relocation (f)
137 #define tc_fix_adjustable(f) ia64_fix_adjustable (f)
138 #define MD_APPLY_SYM_VALUE(FIX) 0
139 #define md_convert_frag(b,s,f) ia64_convert_frag (f)
140 #define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump")
141 #define md_create_short_jump(p,f,t,fr,s) \
142 as_fatal ("ia64_create_short_jump")
143 #define md_estimate_size_before_relax(f,s) \
144 ia64_estimate_size_before_relax(f,s)
145 #define md_elf_section_letter ia64_elf_section_letter
146 #define md_elf_section_flags ia64_elf_section_flags
147 #define TC_FIX_TYPE struct ia64_fix
148 #define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; }
149 #define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e)
150 #define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix)
151 #define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec)
152 #define md_section_align(seg,size) (size)
153 #define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m)
154 #define HANDLE_ALIGN(f) ia64_handle_align (f)
155 #define md_elf_section_type(str,len) ia64_elf_section_type (str, len)
156 #define md_after_parse_args() ia64_after_parse_args ()
157 #define TC_DWARF2_EMIT_OFFSET ia64_dwarf2_emit_offset
158 #define tc_check_label(l) ia64_check_label (l)
160 /* Record if an alignment frag should end with a stop bit. */
161 #define TC_FRAG_TYPE int
162 #define TC_FRAG_INIT(FRAGP) do {(FRAGP)->tc_frag_data = 0;}while (0)
164 /* Give an error if a frag containing code is not aligned to a 16 byte
166 #define md_frag_check(FRAGP) \
167 if ((FRAGP)->has_code \
168 && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 15) != 0) \
169 as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line, \
170 _("instruction address is not a multiple of 16"));
172 #define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16)
174 #define WORKING_DOT_WORD /* don't do broken word processing for now */
176 #define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */
178 /* This is the information required for unwind records in an ia64
179 object file. This is required by GAS and the compiler runtime. */
181 /* These are the starting point masks for the various types of
182 unwind records. To create a record of type R3 for instance, one
183 starts by using the value UNW_R3 and or-ing in any other required values.
184 These values are also unique (in context), so they can be used to identify
185 the various record types as well. UNW_Bx and some UNW_Px do have the
186 same value, but Px can only occur in a prologue context, and Bx in
211 /* These are all the various types of unwind records. */
215 prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
216 rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel,
217 pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
218 fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
219 unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
220 lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
221 priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
222 priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
223 bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
224 rnat_psprel, rnat_sprel, epilogue, label_state, copy_state,
225 spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
226 spill_reg_p, unwabi, endp
229 /* These structures declare the fields that can be used in each of the
230 4 record formats, R, P, B and X. */
232 typedef struct unw_r_record
235 unsigned short grmask;
236 unsigned short grsave;
237 /* masks to represent the union of save.g, save.f, save.b, and
239 unsigned long imask_size;
244 unsigned char gr_mem;
245 unsigned char br_mem;
249 typedef struct unw_p_record
251 struct unw_rec_list *next;
264 unsigned char grmask;
265 unsigned char brmask;
268 unsigned char context;
271 typedef struct unw_b_record
275 unsigned short ecount;
278 typedef struct unw_x_record
284 unsigned long pspoff;
289 unsigned short ab; /* Value of the AB field.. */
290 unsigned short xy; /* Value of the XY field.. */
293 /* This structure is used to determine the specific record type and
295 typedef struct unwind_record
297 unw_record_type type;
306 /* This expression evaluates to true if the relocation is for a local
307 object for which we still want to do the relocation at runtime.
308 False if we are willing to perform this relocation while building
311 /* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field
312 which has no external reloc, so we must resolve the value now. */
314 #define TC_FORCE_RELOCATION_LOCAL(FIX) \
315 ((FIX)->fx_r_type != BFD_RELOC_UNUSED \
316 && (!(FIX)->fx_pcrel \
317 || (FIX)->fx_r_type == BFD_RELOC_IA64_PLTOFF22 \
318 || TC_FORCE_RELOCATION (FIX)))