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800eeca4 | 1 | /* tc-ia64.h -- Header file for tc-ia64.c. |
20ee54e8 | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 |
aef6203b | 3 | Free Software Foundation, Inc. |
800eeca4 JW |
4 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
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 | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
800eeca4 JW |
11 | any later version. |
12 | ||
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. | |
17 | ||
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 | |
4b4da160 NC |
20 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
800eeca4 | 22 | |
29589b0c AM |
23 | #include "opcode/ia64.h" |
24 | #include "elf/ia64.h" | |
800eeca4 JW |
25 | |
26 | #define TC_IA64 | |
27 | ||
44f5c83a JW |
28 | /* Linux is little endian by default. HPUX is big endian by default. */ |
29 | #ifdef TE_HPUX | |
44f5c83a | 30 | #define TARGET_BYTES_BIG_ENDIAN 1 |
1cd8ff38 | 31 | #define MD_FLAGS_DEFAULT EF_IA_64_BE |
44f5c83a | 32 | #else |
44f5c83a | 33 | #define TARGET_BYTES_BIG_ENDIAN 0 |
1cd8ff38 | 34 | #define MD_FLAGS_DEFAULT EF_IA_64_ABI64 |
44f5c83a JW |
35 | #endif /* TE_HPUX */ |
36 | ||
10a98291 L |
37 | extern void (*ia64_number_to_chars) PARAMS ((char *, valueT, int)); |
38 | #define md_number_to_chars (*ia64_number_to_chars) | |
39 | ||
40 | extern void ia64_elf_section_change_hook PARAMS ((void)); | |
41 | #define md_elf_section_change_hook ia64_elf_section_change_hook | |
42 | ||
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 | |
46 | { | |
47 | unsigned int endian : 2; | |
48 | }; | |
49 | ||
50 | #define TC_SEGMENT_INFO_TYPE struct ia64_segment_info_type | |
51 | ||
35f5df7f L |
52 | extern void ia64_adjust_symtab PARAMS ((void)); |
53 | #define tc_adjust_symtab() ia64_adjust_symtab () | |
54 | ||
55 | extern void ia64_frob_file PARAMS ((void)); | |
56 | #define tc_frob_file() ia64_frob_file () | |
57 | ||
44f5c83a JW |
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 | |
61 | md_parse_args. */ | |
62 | ||
63 | #define HOST_SPECIAL_INIT ia64_init | |
514829c3 | 64 | extern void ia64_init PARAMS ((int, char **)); |
44f5c83a JW |
65 | |
66 | #define TARGET_FORMAT ia64_target_format() | |
67 | extern const char *ia64_target_format PARAMS ((void)); | |
800eeca4 JW |
68 | |
69 | #define TARGET_ARCH bfd_arch_ia64 | |
800eeca4 | 70 | #define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */ |
800eeca4 JW |
71 | |
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 */ | |
76 | ||
77 | #define QUOTES_IN_INSN /* allow `string "foo;bar"' */ | |
16a48f83 JB |
78 | #define LEX_AT (LEX_NAME|LEX_BEGIN_NAME) /* allow `@' inside name */ |
79 | #define LEX_QM (LEX_NAME|LEX_BEGIN_NAME) /* allow `?' inside name */ | |
800eeca4 JW |
80 | #define LEX_HASH LEX_END_NAME /* allow `#' ending a name */ |
81 | ||
2fac3d48 JB |
82 | extern const char ia64_symbol_chars[]; |
83 | #define tc_symbol_chars ia64_symbol_chars | |
84 | ||
bf57c3c9 L |
85 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 |
86 | ||
800eeca4 JW |
87 | struct ia64_fix |
88 | { | |
89 | int bigendian; /* byte order at fix location */ | |
90 | enum ia64_opnd opnd; | |
91 | }; | |
92 | ||
800eeca4 JW |
93 | extern void ia64_end_of_source PARAMS((void)); |
94 | extern void ia64_start_line PARAMS((void)); | |
95 | extern int ia64_unrecognized_line PARAMS((int ch)); | |
96 | extern void ia64_frob_label PARAMS((struct symbol *sym)); | |
936cf02e JW |
97 | #ifdef TE_HPUX |
98 | extern int ia64_frob_symbol PARAMS((struct symbol *sym)); | |
99 | #endif | |
800eeca4 | 100 | extern void ia64_flush_pending_output PARAMS((void)); |
16a48f83 | 101 | extern int ia64_parse_name PARAMS((char *name, expressionS *e, char *nextP)); |
800eeca4 JW |
102 | extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op, |
103 | expressionS *r)); | |
104 | extern void ia64_cons_align PARAMS((int)); | |
105 | extern void ia64_flush_insns PARAMS((void)); | |
106 | extern int ia64_fix_adjustable PARAMS((struct fix *fix)); | |
107 | extern int ia64_force_relocation PARAMS((struct fix *)); | |
108 | extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes, | |
109 | expressionS *exp)); | |
110 | extern void ia64_validate_fix PARAMS ((struct fix *fix)); | |
111 | extern char * ia64_canonicalize_symbol_name PARAMS ((char *)); | |
d61a78a7 | 112 | extern int ia64_elf_section_letter PARAMS ((int, char **)); |
800eeca4 | 113 | extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int)); |
91a2ae2a | 114 | extern int ia64_elf_section_type PARAMS ((const char *, size_t len)); |
800eeca4 | 115 | extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec)); |
0a9ef439 RH |
116 | extern void ia64_md_do_align PARAMS ((int, const char *, int, int)); |
117 | extern void ia64_handle_align PARAMS ((fragS *f)); | |
acebd4ce | 118 | extern void ia64_after_parse_args PARAMS ((void)); |
6174d9c8 | 119 | extern void ia64_dwarf2_emit_offset PARAMS ((symbolS *, unsigned int)); |
a645d1eb | 120 | extern void ia64_check_label PARAMS ((symbolS *)); |
b5e0fabd | 121 | extern int ia64_estimate_size_before_relax (fragS *, asection *); |
73f20958 | 122 | extern void ia64_convert_frag (fragS *); |
800eeca4 JW |
123 | |
124 | #define md_end() ia64_end_of_source () | |
125 | #define md_start_line_hook() ia64_start_line () | |
126 | #define tc_unrecognized_line(ch) ia64_unrecognized_line (ch) | |
127 | #define tc_frob_label(s) ia64_frob_label (s) | |
936cf02e JW |
128 | #ifdef TE_HPUX |
129 | #define tc_frob_symbol(s,p) p |= ia64_frob_symbol (s) | |
130 | #endif /* TE_HPUX */ | |
800eeca4 | 131 | #define md_flush_pending_output() ia64_flush_pending_output () |
9497f5ac | 132 | #define md_parse_name(s,e,m,c) ia64_parse_name (s, e, c) |
800eeca4 | 133 | #define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s) |
612d7b83 | 134 | #define tc_canonicalize_section_name(s) ia64_canonicalize_symbol_name (s) |
800eeca4 JW |
135 | #define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r) |
136 | #define md_cons_align(n) ia64_cons_align (n) | |
137 | #define TC_FORCE_RELOCATION(f) ia64_force_relocation (f) | |
138 | #define tc_fix_adjustable(f) ia64_fix_adjustable (f) | |
a161fe53 | 139 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
73f20958 | 140 | #define md_convert_frag(b,s,f) ia64_convert_frag (f) |
07726851 | 141 | #define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump") |
800eeca4 | 142 | #define md_create_short_jump(p,f,t,fr,s) \ |
07726851 | 143 | as_fatal ("ia64_create_short_jump") |
800eeca4 | 144 | #define md_estimate_size_before_relax(f,s) \ |
b5e0fabd | 145 | ia64_estimate_size_before_relax(f,s) |
d61a78a7 | 146 | #define md_elf_section_letter ia64_elf_section_letter |
800eeca4 JW |
147 | #define md_elf_section_flags ia64_elf_section_flags |
148 | #define TC_FIX_TYPE struct ia64_fix | |
149 | #define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; } | |
150 | #define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e) | |
151 | #define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix) | |
152 | #define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec) | |
bf57c3c9 | 153 | #define md_section_align(seg,size) (size) |
0a9ef439 RH |
154 | #define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m) |
155 | #define HANDLE_ALIGN(f) ia64_handle_align (f) | |
91a2ae2a | 156 | #define md_elf_section_type(str,len) ia64_elf_section_type (str, len) |
acebd4ce | 157 | #define md_after_parse_args() ia64_after_parse_args () |
6174d9c8 | 158 | #define TC_DWARF2_EMIT_OFFSET ia64_dwarf2_emit_offset |
a645d1eb | 159 | #define tc_check_label(l) ia64_check_label (l) |
0a9ef439 | 160 | |
9545c4ce L |
161 | /* Record if an alignment frag should end with a stop bit. */ |
162 | #define TC_FRAG_TYPE int | |
163 | #define TC_FRAG_INIT(FRAGP) do {(FRAGP)->tc_frag_data = 0;}while (0) | |
164 | ||
5a9ff93d JW |
165 | /* Give an error if a frag containing code is not aligned to a 16 byte |
166 | boundary. */ | |
167 | #define md_frag_check(FRAGP) \ | |
168 | if ((FRAGP)->has_code \ | |
169 | && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 15) != 0) \ | |
170 | as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line, \ | |
171 | _("instruction address is not a multiple of 16")); | |
172 | ||
0a9ef439 | 173 | #define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16) |
800eeca4 | 174 | |
800eeca4 JW |
175 | #define WORKING_DOT_WORD /* don't do broken word processing for now */ |
176 | ||
800eeca4 JW |
177 | #define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */ |
178 | ||
179 | /* This is the information required for unwind records in an ia64 | |
4a4f25cf | 180 | object file. This is required by GAS and the compiler runtime. */ |
800eeca4 JW |
181 | |
182 | /* These are the starting point masks for the various types of | |
183 | unwind records. To create a record of type R3 for instance, one | |
4a4f25cf KH |
184 | starts by using the value UNW_R3 and or-ing in any other required values. |
185 | These values are also unique (in context), so they can be used to identify | |
800eeca4 JW |
186 | the various record types as well. UNW_Bx and some UNW_Px do have the |
187 | same value, but Px can only occur in a prologue context, and Bx in | |
188 | a body context. */ | |
189 | ||
190 | #define UNW_R1 0x00 | |
191 | #define UNW_R2 0x40 | |
192 | #define UNW_R3 0x60 | |
193 | #define UNW_P1 0x80 | |
194 | #define UNW_P2 0xA0 | |
195 | #define UNW_P3 0xB0 | |
196 | #define UNW_P4 0xB8 | |
197 | #define UNW_P5 0xB9 | |
198 | #define UNW_P6 0xC0 | |
199 | #define UNW_P7 0xE0 | |
200 | #define UNW_P8 0xF0 | |
201 | #define UNW_P9 0xF1 | |
202 | #define UNW_P10 0xFF | |
203 | #define UNW_X1 0xF9 | |
204 | #define UNW_X2 0xFA | |
205 | #define UNW_X3 0xFB | |
206 | #define UNW_X4 0xFC | |
207 | #define UNW_B1 0x80 | |
208 | #define UNW_B2 0xC0 | |
209 | #define UNW_B3 0xE0 | |
210 | #define UNW_B4 0xF0 | |
211 | ||
212 | /* These are all the various types of unwind records. */ | |
213 | ||
214 | typedef enum | |
215 | { | |
216 | prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel, | |
217 | rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel, | |
218 | pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel, | |
219 | fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask, | |
220 | unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel, | |
4a4f25cf KH |
221 | lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel, |
222 | priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel, | |
800eeca4 JW |
223 | priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when, |
224 | bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr, | |
225 | rnat_psprel, rnat_sprel, epilogue, label_state, copy_state, | |
226 | spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p, | |
5738bc24 | 227 | spill_reg_p, unwabi, endp |
800eeca4 JW |
228 | } unw_record_type; |
229 | ||
4a4f25cf | 230 | /* These structures declare the fields that can be used in each of the |
800eeca4 JW |
231 | 4 record formats, R, P, B and X. */ |
232 | ||
233 | typedef struct unw_r_record | |
234 | { | |
235 | unsigned long rlen; | |
e0c9811a | 236 | unsigned short grmask; |
800eeca4 | 237 | unsigned short grsave; |
e0c9811a JW |
238 | /* masks to represent the union of save.g, save.f, save.b, and |
239 | save.gf: */ | |
240 | unsigned long imask_size; | |
241 | struct | |
242 | { | |
243 | unsigned char *i; | |
ba825241 | 244 | unsigned int fr_mem; |
e0c9811a JW |
245 | unsigned char gr_mem; |
246 | unsigned char br_mem; | |
247 | } mask; | |
800eeca4 JW |
248 | } unw_r_record; |
249 | ||
250 | typedef struct unw_p_record | |
251 | { | |
ba825241 | 252 | struct unw_rec_list *next; |
800eeca4 JW |
253 | unsigned long t; |
254 | unsigned long size; | |
ba825241 JB |
255 | union |
256 | { | |
257 | unsigned long sp; | |
258 | unsigned long psp; | |
259 | } off; | |
260 | union | |
261 | { | |
262 | unsigned short gr; | |
263 | unsigned short br; | |
264 | } r; | |
265 | unsigned char grmask; | |
266 | unsigned char brmask; | |
267 | unsigned int frmask; | |
e0c9811a JW |
268 | unsigned char abi; |
269 | unsigned char context; | |
800eeca4 JW |
270 | } unw_p_record; |
271 | ||
272 | typedef struct unw_b_record | |
273 | { | |
274 | unsigned long t; | |
275 | unsigned long label; | |
276 | unsigned short ecount; | |
277 | } unw_b_record; | |
278 | ||
279 | typedef struct unw_x_record | |
280 | { | |
281 | unsigned long t; | |
ba825241 JB |
282 | union |
283 | { | |
284 | unsigned long spoff; | |
285 | unsigned long pspoff; | |
286 | unsigned int reg; | |
287 | } where; | |
800eeca4 | 288 | unsigned short reg; |
800eeca4 | 289 | unsigned short qp; |
e0c9811a JW |
290 | unsigned short ab; /* Value of the AB field.. */ |
291 | unsigned short xy; /* Value of the XY field.. */ | |
800eeca4 JW |
292 | } unw_x_record; |
293 | ||
4a4f25cf | 294 | /* This structure is used to determine the specific record type and |
800eeca4 JW |
295 | its fields. */ |
296 | typedef struct unwind_record | |
297 | { | |
298 | unw_record_type type; | |
299 | union { | |
300 | unw_r_record r; | |
301 | unw_p_record p; | |
302 | unw_b_record b; | |
303 | unw_x_record x; | |
304 | } record; | |
305 | } unwind_record; | |
85b40035 | 306 | |
a161fe53 | 307 | /* This expression evaluates to true if the relocation is for a local |
85b40035 | 308 | object for which we still want to do the relocation at runtime. |
a161fe53 AM |
309 | False if we are willing to perform this relocation while building |
310 | the .o file. */ | |
85b40035 | 311 | |
fa1cb89c JW |
312 | /* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field |
313 | which has no external reloc, so we must resolve the value now. */ | |
314 | ||
a161fe53 AM |
315 | #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
316 | ((FIX)->fx_r_type != BFD_RELOC_UNUSED \ | |
317 | && (!(FIX)->fx_pcrel \ | |
20ee54e8 | 318 | || (FIX)->fx_r_type == BFD_RELOC_IA64_PLTOFF22 \ |
a161fe53 | 319 | || TC_FORCE_RELOCATION (FIX))) |