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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gas/] [config/] [tc-ia64.h] - Blame information for rev 94

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/* tc-ia64.h -- Header file for tc-ia64.c.
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   Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
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   2009, 2010  Free Software Foundation, Inc.
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   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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   This file is part of GAS, the GNU Assembler.
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   GAS is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3, or (at your option)
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   any later version.
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13
   GAS is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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18
   You should have received a copy of the GNU General Public License
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   along with GAS; see the file COPYING.  If not, write to
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   the Free Software Foundation, 51 Franklin Street - Fifth Floor,
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   Boston, MA 02110-1301, USA.  */
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#include "opcode/ia64.h"
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#include "elf/ia64.h"
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#define TC_IA64
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/* Linux is little endian by default.  HPUX is big endian by default.  */
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#ifdef TE_HPUX
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#define TARGET_BYTES_BIG_ENDIAN         1
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#define MD_FLAGS_DEFAULT                EF_IA_64_BE
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#else
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#define TARGET_BYTES_BIG_ENDIAN         0
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#define MD_FLAGS_DEFAULT                EF_IA_64_ABI64
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#endif /* TE_HPUX */
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extern void (*ia64_number_to_chars) (char *, valueT, int);
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#define md_number_to_chars              (*ia64_number_to_chars)
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extern void ia64_elf_section_change_hook (void);
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#define md_elf_section_change_hook      ia64_elf_section_change_hook
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/* We record the endian for this section. 0 means default, 1 means
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   big endian and 2 means little endian.  */
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struct ia64_segment_info_type
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{
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  unsigned int endian : 2;
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};
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#define TC_SEGMENT_INFO_TYPE            struct ia64_segment_info_type
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extern void ia64_adjust_symtab (void);
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#define tc_adjust_symtab()      ia64_adjust_symtab ()
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extern void ia64_frob_file (void);
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#define tc_frob_file()          ia64_frob_file ()
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/* We need to set the default object file format in ia64_init and not in
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   md_begin.  This is because parse_args is called before md_begin, and we
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   do not want md_begin to wipe out the flag settings set by options parsed in
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   md_parse_args.  */
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#define HOST_SPECIAL_INIT ia64_init
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extern void ia64_init (int, char **);
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#define TARGET_FORMAT ia64_target_format()
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extern const char *ia64_target_format (void);
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#define TARGET_ARCH                     bfd_arch_ia64
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#define DOUBLESLASH_LINE_COMMENTS       /* allow //-style comments */
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#define NEED_LITERAL_POOL               /* need gp literal pool */
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#define RELOC_REQUIRES_SYMBOL
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#define DIFF_EXPR_OK   /* foo-. gets turned into PC relative relocs */
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#define NEED_INDEX_OPERATOR             /* [ ] is index operator */
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#define QUOTES_IN_INSN                  /* allow `string "foo;bar"' */
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#define LEX_AT          (LEX_NAME|LEX_BEGIN_NAME) /* allow `@' inside name */
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#define LEX_QM          (LEX_NAME|LEX_BEGIN_NAME) /* allow `?' inside name */
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#define LEX_HASH        LEX_END_NAME    /* allow `#' ending a name */
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82
#define TC_PREDICATE_START_CHAR '('
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#define TC_PREDICATE_END_CHAR ')'
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85
extern const char ia64_symbol_chars[];
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#define tc_symbol_chars ia64_symbol_chars
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88
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
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90
struct ia64_fix
91
  {
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    int bigendian;                      /* byte order at fix location */
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    enum ia64_opnd opnd;
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  };
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96
extern void ia64_end_of_source (void);
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extern void ia64_start_line (void);
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extern int ia64_unrecognized_line (int);
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extern void ia64_frob_label (struct symbol *);
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#ifdef TE_HPUX
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extern int ia64_frob_symbol (struct symbol *);
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#endif
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extern void ia64_flush_pending_output (void);
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extern int ia64_parse_name (char *, expressionS *, char *);
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extern int ia64_optimize_expr (expressionS *, operatorT, expressionS *);
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extern void ia64_cons_align (int);
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extern void ia64_flush_insns (void);
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extern int ia64_fix_adjustable (struct fix *);
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extern int ia64_force_relocation (struct fix *);
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extern void ia64_cons_fix_new (fragS *, int, int, expressionS *);
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extern void ia64_validate_fix (struct fix *);
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extern char * ia64_canonicalize_symbol_name (char *);
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extern bfd_vma ia64_elf_section_letter (int, char **);
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extern flagword ia64_elf_section_flags (flagword, bfd_vma, int);
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extern int ia64_elf_section_type (const char *, size_t);
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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 *);
124
 
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)
129
#ifdef TE_HPUX
130
#define tc_frob_symbol(s,p)             p |= ia64_frob_symbol (s)
131
#endif /* TE_HPUX */
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)
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#define tc_canonicalize_section_name(s) ia64_canonicalize_symbol_name (s)
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#define md_optimize_expr(l,o,r)         ia64_optimize_expr (l, o, r)
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#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)
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#define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump")
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#define md_create_short_jump(p,f,t,fr,s) \
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                                        as_fatal ("ia64_create_short_jump")
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#define md_estimate_size_before_relax(f,s) \
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                                        ia64_estimate_size_before_relax(f,s)
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#define md_elf_section_letter           ia64_elf_section_letter
149
#define md_elf_section_flags            ia64_elf_section_flags
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#define TC_FIX_TYPE                     struct ia64_fix
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#define TC_INIT_FIX_DATA(f)             { f->tc_fix_data.opnd = 0; }
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#define TC_CONS_FIX_NEW(f,o,l,e)        ia64_cons_fix_new (f, o, l, e)
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#define TC_VALIDATE_FIX(fix,seg,skip)   ia64_validate_fix (fix)
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#define MD_PCREL_FROM_SECTION(fix,sec)  ia64_pcrel_from_section (fix, sec)
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#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)
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#define HANDLE_ALIGN(f)                 ia64_handle_align (f)
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#define md_elf_section_type(str,len)    ia64_elf_section_type (str, len)
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#define md_after_parse_args()           ia64_after_parse_args ()
160
#define TC_DWARF2_EMIT_OFFSET           ia64_dwarf2_emit_offset
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#define tc_check_label(l)               ia64_check_label (l)
162
#ifdef TE_VMS
163
#define tc_init_after_args() ia64_vms_note ()
164
void ia64_vms_note (void);
165
#endif
166
 
167
/* Record if an alignment frag should end with a stop bit.  */
168
#define TC_FRAG_TYPE                    int
169
#define TC_FRAG_INIT(FRAGP)             do {(FRAGP)->tc_frag_data = 0;}while (0)
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171
/* Give an error if a frag containing code is not aligned to a 16 byte
172
   boundary.  */
173
#define md_frag_check(FRAGP) \
174
  if ((FRAGP)->has_code                                                 \
175
      && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 15) != 0) \
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     as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line,                  \
177
                   _("instruction address is not a multiple of 16"));
178
 
179
#define MAX_MEM_FOR_RS_ALIGN_CODE  (15 + 16)
180
 
181
#define WORKING_DOT_WORD        /* don't do broken word processing for now */
182
 
183
#define DWARF2_LINE_MIN_INSN_LENGTH 1   /* so slot-multipliers can be 1 */
184
 
185
/* This is the information required for unwind records in an ia64
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   object file. This is required by GAS and the compiler runtime.  */
187
 
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
194
   a body context.  */
195
 
196
#define UNW_R1  0x00
197
#define UNW_R2  0x40
198
#define UNW_R3  0x60
199
#define UNW_P1  0x80
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#define UNW_P2  0xA0
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#define UNW_P3  0xB0
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#define UNW_P4  0xB8
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#define UNW_P5  0xB9
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#define UNW_P6  0xC0
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#define UNW_P7  0xE0
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#define UNW_P8  0xF0
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#define UNW_P9  0xF1
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#define UNW_P10 0xFF
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#define UNW_X1  0xF9
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#define UNW_X2  0xFA
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#define UNW_X3  0xFB
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#define UNW_X4  0xFC
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#define UNW_B1  0x80
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#define UNW_B2  0xC0
215
#define UNW_B3  0xE0
216
#define UNW_B4  0xF0
217
 
218
/* These are all the various types of unwind records.  */
219
 
220
typedef enum
221
{
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,
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  pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
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  fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
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  unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
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  lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
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  priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
229
  priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
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  bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
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  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
234
} unw_record_type;
235
 
236
/* These structures declare the fields that can be used in each of the
237
   4 record formats, R, P, B and X.  */
238
 
239
typedef struct unw_r_record
240
{
241
  unsigned long rlen;
242
  unsigned short grmask;
243
  unsigned short grsave;
244
  /* masks to represent the union of save.g, save.f, save.b, and
245
     save.gf: */
246
  unsigned long imask_size;
247
  struct
248
  {
249
    unsigned char *i;
250
    unsigned int fr_mem;
251
    unsigned char gr_mem;
252
    unsigned char br_mem;
253
  } mask;
254
} unw_r_record;
255
 
256
typedef struct unw_p_record
257
{
258
  struct unw_rec_list *next;
259
  unsigned long t;
260
  unsigned long size;
261
  union
262
  {
263
    unsigned long sp;
264
    unsigned long psp;
265
  } off;
266
  union
267
  {
268
    unsigned short gr;
269
    unsigned short br;
270
  } r;
271
  unsigned char grmask;
272
  unsigned char brmask;
273
  unsigned int frmask;
274
  unsigned char abi;
275
  unsigned char context;
276
} unw_p_record;
277
 
278
typedef struct unw_b_record
279
{
280
  unsigned long t;
281
  unsigned long label;
282
  unsigned short ecount;
283
} unw_b_record;
284
 
285
typedef struct unw_x_record
286
{
287
  unsigned long t;
288
  union
289
  {
290
    unsigned long spoff;
291
    unsigned long pspoff;
292
    unsigned int reg;
293
  } where;
294
  unsigned short reg;
295
  unsigned short qp;
296
  unsigned short ab;    /* Value of the AB field..  */
297
  unsigned short xy;    /* Value of the XY field..  */
298
} unw_x_record;
299
 
300
/* This structure is used to determine the specific record type and
301
   its fields.  */
302
typedef struct unwind_record
303
{
304
  unw_record_type type;
305
  union {
306
    unw_r_record r;
307
    unw_p_record p;
308
    unw_b_record b;
309
    unw_x_record x;
310
  } record;
311
} unwind_record;
312
 
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
316
   the .o file.  */
317
 
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.  */
320
 
321
#define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
322
  ((FIX)->fx_r_type != BFD_RELOC_UNUSED                 \
323
   && (!(FIX)->fx_pcrel                                 \
324
       || (FIX)->fx_r_type == BFD_RELOC_IA64_PLTOFF22   \
325
       || TC_FORCE_RELOCATION (FIX)))
326
 
327
/* VMS backtraces expect dwarf version 3.  */
328
#ifdef TE_VMS
329
#define DWARF2_VERSION 3
330
#endif

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