* s390-tdep.c: Get frame chains and saved pc values properly from
[deliverable/binutils-gdb.git] / gas / config / tc-ia64.h
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800eeca4 1/* tc-ia64.h -- Header file for tc-ia64.c.
f7e42eb4 2 Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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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. */
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21
22#include <opcode/ia64.h>
23#include <elf/ia64.h>
24
25#define TC_IA64
26
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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
514829c3 42extern void ia64_init PARAMS ((int, char **));
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43
44#define TARGET_FORMAT ia64_target_format()
45extern const char *ia64_target_format PARAMS ((void));
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46
47#define TARGET_ARCH bfd_arch_ia64
800eeca4 48#define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */
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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
60struct ia64_fix
61 {
62 int bigendian; /* byte order at fix location */
63 enum ia64_opnd opnd;
64 };
65
66extern void ia64_do_align PARAMS((int n));
67extern void ia64_end_of_source PARAMS((void));
68extern void ia64_start_line PARAMS((void));
69extern int ia64_unrecognized_line PARAMS((int ch));
70extern void ia64_frob_label PARAMS((struct symbol *sym));
71extern void ia64_flush_pending_output PARAMS((void));
72extern int ia64_parse_name (char *name, expressionS *e);
73extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op,
74 expressionS *r));
75extern void ia64_cons_align PARAMS((int));
76extern void ia64_flush_insns PARAMS((void));
77extern int ia64_fix_adjustable PARAMS((struct fix *fix));
78extern int ia64_force_relocation PARAMS((struct fix *));
79extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes,
80 expressionS *exp));
81extern void ia64_validate_fix PARAMS ((struct fix *fix));
82extern char * ia64_canonicalize_symbol_name PARAMS ((char *));
d61a78a7 83extern int ia64_elf_section_letter PARAMS ((int, char **));
800eeca4 84extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int));
91a2ae2a 85extern int ia64_elf_section_type PARAMS ((const char *, size_t len));
800eeca4 86extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec));
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87extern void ia64_md_do_align PARAMS ((int, const char *, int, int));
88extern void ia64_handle_align PARAMS ((fragS *f));
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89
90#define md_end() ia64_end_of_source ()
91#define md_start_line_hook() ia64_start_line ()
92#define tc_unrecognized_line(ch) ia64_unrecognized_line (ch)
93#define tc_frob_label(s) ia64_frob_label (s)
94#define md_flush_pending_output() ia64_flush_pending_output ()
a8a22e33 95#define md_parse_name(s,e,c) ia64_parse_name (s, e)
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96#define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s)
97#define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r)
98#define md_cons_align(n) ia64_cons_align (n)
99#define TC_FORCE_RELOCATION(f) ia64_force_relocation (f)
100#define tc_fix_adjustable(f) ia64_fix_adjustable (f)
101#define md_convert_frag(b,s,f) as_fatal ("ia64_convert_frag")
07726851 102#define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump")
800eeca4 103#define md_create_short_jump(p,f,t,fr,s) \
07726851 104 as_fatal ("ia64_create_short_jump")
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105#define md_estimate_size_before_relax(f,s) \
106 (as_fatal ("ia64_estimate_size_before_relax"), 1)
d61a78a7 107#define md_elf_section_letter ia64_elf_section_letter
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108#define md_elf_section_flags ia64_elf_section_flags
109#define TC_FIX_TYPE struct ia64_fix
110#define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; }
111#define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e)
112#define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix)
113#define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec)
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114#define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m)
115#define HANDLE_ALIGN(f) ia64_handle_align (f)
91a2ae2a 116#define md_elf_section_type(str,len) ia64_elf_section_type (str, len)
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117
118#define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16)
800eeca4 119
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120#define WORKING_DOT_WORD /* don't do broken word processing for now */
121
122#define ELF_TC_SPECIAL_SECTIONS \
123{ ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
91a2ae2a 124{ ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
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125
126#define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */
127
128/* This is the information required for unwind records in an ia64
4a4f25cf 129 object file. This is required by GAS and the compiler runtime. */
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130
131/* These are the starting point masks for the various types of
132 unwind records. To create a record of type R3 for instance, one
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133 starts by using the value UNW_R3 and or-ing in any other required values.
134 These values are also unique (in context), so they can be used to identify
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135 the various record types as well. UNW_Bx and some UNW_Px do have the
136 same value, but Px can only occur in a prologue context, and Bx in
137 a body context. */
138
139#define UNW_R1 0x00
140#define UNW_R2 0x40
141#define UNW_R3 0x60
142#define UNW_P1 0x80
143#define UNW_P2 0xA0
144#define UNW_P3 0xB0
145#define UNW_P4 0xB8
146#define UNW_P5 0xB9
147#define UNW_P6 0xC0
148#define UNW_P7 0xE0
149#define UNW_P8 0xF0
150#define UNW_P9 0xF1
151#define UNW_P10 0xFF
152#define UNW_X1 0xF9
153#define UNW_X2 0xFA
154#define UNW_X3 0xFB
155#define UNW_X4 0xFC
156#define UNW_B1 0x80
157#define UNW_B2 0xC0
158#define UNW_B3 0xE0
159#define UNW_B4 0xF0
160
161/* These are all the various types of unwind records. */
162
163typedef enum
164{
165 prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
166 rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel,
167 pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
168 fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
169 unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
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170 lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
171 priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
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172 priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
173 bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
174 rnat_psprel, rnat_sprel, epilogue, label_state, copy_state,
175 spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
e0c9811a 176 spill_reg_p, unwabi
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177} unw_record_type;
178
4a4f25cf 179/* These structures declare the fields that can be used in each of the
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180 4 record formats, R, P, B and X. */
181
182typedef struct unw_r_record
183{
184 unsigned long rlen;
e0c9811a 185 unsigned short grmask;
800eeca4 186 unsigned short grsave;
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187 /* masks to represent the union of save.g, save.f, save.b, and
188 save.gf: */
189 unsigned long imask_size;
190 struct
191 {
192 unsigned char *i;
193 unsigned long fr_mem;
194 unsigned char gr_mem;
195 unsigned char br_mem;
196 } mask;
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197} unw_r_record;
198
199typedef struct unw_p_record
200{
201 void *imask;
202 unsigned long t;
203 unsigned long size;
204 unsigned long spoff;
205 unsigned long br;
206 unsigned long pspoff;
207 unsigned short gr;
208 unsigned short rmask;
209 unsigned short grmask;
210 unsigned long frmask;
211 unsigned short brmask;
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212 unsigned char abi;
213 unsigned char context;
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214} unw_p_record;
215
216typedef struct unw_b_record
217{
218 unsigned long t;
219 unsigned long label;
220 unsigned short ecount;
221} unw_b_record;
222
223typedef struct unw_x_record
224{
225 unsigned long t;
226 unsigned long spoff;
227 unsigned long pspoff;
228 unsigned short reg;
229 unsigned short treg;
230 unsigned short qp;
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231 unsigned short ab; /* Value of the AB field.. */
232 unsigned short xy; /* Value of the XY field.. */
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233} unw_x_record;
234
4a4f25cf 235/* This structure is used to determine the specific record type and
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236 its fields. */
237typedef struct unwind_record
238{
239 unw_record_type type;
240 union {
241 unw_r_record r;
242 unw_p_record p;
243 unw_b_record b;
244 unw_x_record x;
245 } record;
246} unwind_record;
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247
248/* This expression evaluates to false if the relocation is for a local
249 object for which we still want to do the relocation at runtime.
250 True if we are willing to perform this relocation while building
251 the .o file. This is only used for pcrel relocations. */
252
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253/* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field
254 which has no external reloc, so we must resolve the value now. */
255
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256#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
257 ((FIX)->fx_addsy == NULL \
fa1cb89c 258 || (FIX)->fx_r_type == BFD_RELOC_UNUSED \
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259 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
260 && ! S_IS_WEAK ((FIX)->fx_addsy) \
a99746f4 261 && S_IS_DEFINED ((FIX)->fx_addsy) \
85b40035 262 && ! S_IS_COMMON ((FIX)->fx_addsy)))
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