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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 | ||
44f5c83a JW |
27 | /* Linux is little endian by default. HPUX is big endian by default. */ |
28 | #ifdef TE_HPUX | |
29 | #define md_number_to_chars number_to_chars_bigendian | |
30 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
31 | #else | |
32 | #define md_number_to_chars number_to_chars_littleendian | |
33 | #define TARGET_BYTES_BIG_ENDIAN 0 | |
34 | #endif /* TE_HPUX */ | |
35 | ||
36 | /* We need to set the default object file format in ia64_init and not in | |
37 | md_begin. This is because parse_args is called before md_begin, and we | |
38 | do not want md_begin to wipe out the flag settings set by options parsed in | |
39 | md_parse_args. */ | |
40 | ||
41 | #define HOST_SPECIAL_INIT ia64_init | |
42 | ||
43 | #define TARGET_FORMAT ia64_target_format() | |
44 | extern const char *ia64_target_format PARAMS ((void)); | |
800eeca4 JW |
45 | |
46 | #define TARGET_ARCH bfd_arch_ia64 | |
800eeca4 | 47 | #define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */ |
800eeca4 JW |
48 | #define TC_HANDLES_FX_DONE |
49 | ||
50 | #define NEED_LITERAL_POOL /* need gp literal pool */ | |
51 | #define RELOC_REQUIRES_SYMBOL | |
52 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ | |
53 | #define NEED_INDEX_OPERATOR /* [ ] is index operator */ | |
54 | ||
55 | #define QUOTES_IN_INSN /* allow `string "foo;bar"' */ | |
56 | #define LEX_AT LEX_NAME /* allow `@' inside name */ | |
57 | #define LEX_QM LEX_NAME /* allow `?' inside name */ | |
58 | #define LEX_HASH LEX_END_NAME /* allow `#' ending a name */ | |
59 | ||
60 | struct ia64_fix | |
61 | { | |
62 | int bigendian; /* byte order at fix location */ | |
63 | enum ia64_opnd opnd; | |
64 | }; | |
65 | ||
66 | extern void ia64_do_align PARAMS((int n)); | |
67 | extern void ia64_end_of_source PARAMS((void)); | |
68 | extern void ia64_start_line PARAMS((void)); | |
69 | extern int ia64_unrecognized_line PARAMS((int ch)); | |
70 | extern void ia64_frob_label PARAMS((struct symbol *sym)); | |
71 | extern void ia64_flush_pending_output PARAMS((void)); | |
72 | extern int ia64_parse_name (char *name, expressionS *e); | |
73 | extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op, | |
74 | expressionS *r)); | |
75 | extern void ia64_cons_align PARAMS((int)); | |
76 | extern void ia64_flush_insns PARAMS((void)); | |
77 | extern int ia64_fix_adjustable PARAMS((struct fix *fix)); | |
78 | extern int ia64_force_relocation PARAMS((struct fix *)); | |
79 | extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes, | |
80 | expressionS *exp)); | |
81 | extern void ia64_validate_fix PARAMS ((struct fix *fix)); | |
82 | extern char * ia64_canonicalize_symbol_name PARAMS ((char *)); | |
83 | extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int)); | |
84 | extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec)); | |
85 | extern int ia64_md_do_align PARAMS ((int, const char *, int, int)); | |
86 | ||
87 | #define md_end() ia64_end_of_source () | |
88 | #define md_start_line_hook() ia64_start_line () | |
89 | #define tc_unrecognized_line(ch) ia64_unrecognized_line (ch) | |
90 | #define tc_frob_label(s) ia64_frob_label (s) | |
91 | #define md_flush_pending_output() ia64_flush_pending_output () | |
92 | #define md_parse_name(s,e) ia64_parse_name (s, e) | |
93 | #define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s) | |
94 | #define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r) | |
95 | #define md_cons_align(n) ia64_cons_align (n) | |
96 | #define TC_FORCE_RELOCATION(f) ia64_force_relocation (f) | |
97 | #define tc_fix_adjustable(f) ia64_fix_adjustable (f) | |
98 | #define md_convert_frag(b,s,f) as_fatal ("ia64_convert_frag") | |
99 | #define md_create_long_jump(p,f,t,fr,s) as_fatal("ia64_create_long_jump") | |
100 | #define md_create_short_jump(p,f,t,fr,s) \ | |
101 | as_fatal("ia64_create_short_jump") | |
102 | #define md_estimate_size_before_relax(f,s) \ | |
103 | (as_fatal ("ia64_estimate_size_before_relax"), 1) | |
104 | #define md_elf_section_flags ia64_elf_section_flags | |
105 | #define TC_FIX_TYPE struct ia64_fix | |
106 | #define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; } | |
107 | #define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e) | |
108 | #define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix) | |
109 | #define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec) | |
110 | #define md_do_align(n,f,l,m,j) if (ia64_md_do_align (n,f,l,m)) goto j | |
111 | ||
112 | /* Call md_apply_fix3 with segment instead of md_apply_fix. */ | |
113 | #define MD_APPLY_FIX3 | |
114 | ||
115 | #define WORKING_DOT_WORD /* don't do broken word processing for now */ | |
116 | ||
117 | #define ELF_TC_SPECIAL_SECTIONS \ | |
118 | { ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \ | |
119 | { ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \ | |
120 | { ".IA_64.unwind", SHT_IA_64_UNWIND, SHF_ALLOC }, \ | |
121 | { ".IA_64.unwind_info", SHT_PROGBITS, SHF_ALLOC }, | |
122 | ||
123 | #define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */ | |
124 | ||
125 | /* This is the information required for unwind records in an ia64 | |
4a4f25cf | 126 | object file. This is required by GAS and the compiler runtime. */ |
800eeca4 JW |
127 | |
128 | /* These are the starting point masks for the various types of | |
129 | unwind records. To create a record of type R3 for instance, one | |
4a4f25cf KH |
130 | starts by using the value UNW_R3 and or-ing in any other required values. |
131 | These values are also unique (in context), so they can be used to identify | |
800eeca4 JW |
132 | the various record types as well. UNW_Bx and some UNW_Px do have the |
133 | same value, but Px can only occur in a prologue context, and Bx in | |
134 | a body context. */ | |
135 | ||
136 | #define UNW_R1 0x00 | |
137 | #define UNW_R2 0x40 | |
138 | #define UNW_R3 0x60 | |
139 | #define UNW_P1 0x80 | |
140 | #define UNW_P2 0xA0 | |
141 | #define UNW_P3 0xB0 | |
142 | #define UNW_P4 0xB8 | |
143 | #define UNW_P5 0xB9 | |
144 | #define UNW_P6 0xC0 | |
145 | #define UNW_P7 0xE0 | |
146 | #define UNW_P8 0xF0 | |
147 | #define UNW_P9 0xF1 | |
148 | #define UNW_P10 0xFF | |
149 | #define UNW_X1 0xF9 | |
150 | #define UNW_X2 0xFA | |
151 | #define UNW_X3 0xFB | |
152 | #define UNW_X4 0xFC | |
153 | #define UNW_B1 0x80 | |
154 | #define UNW_B2 0xC0 | |
155 | #define UNW_B3 0xE0 | |
156 | #define UNW_B4 0xF0 | |
157 | ||
158 | /* These are all the various types of unwind records. */ | |
159 | ||
160 | typedef enum | |
161 | { | |
162 | prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel, | |
163 | rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel, | |
164 | pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel, | |
165 | fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask, | |
166 | unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel, | |
4a4f25cf KH |
167 | lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel, |
168 | priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel, | |
800eeca4 JW |
169 | priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when, |
170 | bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr, | |
171 | rnat_psprel, rnat_sprel, epilogue, label_state, copy_state, | |
172 | spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p, | |
e0c9811a | 173 | spill_reg_p, unwabi |
800eeca4 JW |
174 | } unw_record_type; |
175 | ||
4a4f25cf | 176 | /* These structures declare the fields that can be used in each of the |
800eeca4 JW |
177 | 4 record formats, R, P, B and X. */ |
178 | ||
179 | typedef struct unw_r_record | |
180 | { | |
181 | unsigned long rlen; | |
e0c9811a | 182 | unsigned short grmask; |
800eeca4 | 183 | unsigned short grsave; |
e0c9811a JW |
184 | /* masks to represent the union of save.g, save.f, save.b, and |
185 | save.gf: */ | |
186 | unsigned long imask_size; | |
187 | struct | |
188 | { | |
189 | unsigned char *i; | |
190 | unsigned long fr_mem; | |
191 | unsigned char gr_mem; | |
192 | unsigned char br_mem; | |
193 | } mask; | |
800eeca4 JW |
194 | } unw_r_record; |
195 | ||
196 | typedef struct unw_p_record | |
197 | { | |
198 | void *imask; | |
199 | unsigned long t; | |
200 | unsigned long size; | |
201 | unsigned long spoff; | |
202 | unsigned long br; | |
203 | unsigned long pspoff; | |
204 | unsigned short gr; | |
205 | unsigned short rmask; | |
206 | unsigned short grmask; | |
207 | unsigned long frmask; | |
208 | unsigned short brmask; | |
e0c9811a JW |
209 | unsigned char abi; |
210 | unsigned char context; | |
800eeca4 JW |
211 | } unw_p_record; |
212 | ||
213 | typedef struct unw_b_record | |
214 | { | |
215 | unsigned long t; | |
216 | unsigned long label; | |
217 | unsigned short ecount; | |
218 | } unw_b_record; | |
219 | ||
220 | typedef struct unw_x_record | |
221 | { | |
222 | unsigned long t; | |
223 | unsigned long spoff; | |
224 | unsigned long pspoff; | |
225 | unsigned short reg; | |
226 | unsigned short treg; | |
227 | unsigned short qp; | |
e0c9811a JW |
228 | unsigned short ab; /* Value of the AB field.. */ |
229 | unsigned short xy; /* Value of the XY field.. */ | |
800eeca4 JW |
230 | } unw_x_record; |
231 | ||
4a4f25cf | 232 | /* This structure is used to determine the specific record type and |
800eeca4 JW |
233 | its fields. */ |
234 | typedef struct unwind_record | |
235 | { | |
236 | unw_record_type type; | |
237 | union { | |
238 | unw_r_record r; | |
239 | unw_p_record p; | |
240 | unw_b_record b; | |
241 | unw_x_record x; | |
242 | } record; | |
243 | } unwind_record; |