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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.18.50/] [gas/] [config/] [tc-ia64.h] - Blame information for rev 156

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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
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   Free Software Foundation, Inc.
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   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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6
   This file is part of GAS, the GNU Assembler.
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8
   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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   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) PARAMS ((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 PARAMS ((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 PARAMS ((void));
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#define tc_adjust_symtab()      ia64_adjust_symtab ()
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extern void ia64_frob_file PARAMS ((void));
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#define tc_frob_file()          ia64_frob_file ()
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58
/* 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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63
#define HOST_SPECIAL_INIT ia64_init
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extern void ia64_init PARAMS ((int, char **));
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#define TARGET_FORMAT ia64_target_format()
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extern const char *ia64_target_format PARAMS ((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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77
#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 */
81
 
82
extern const char ia64_symbol_chars[];
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#define tc_symbol_chars ia64_symbol_chars
84
 
85
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
86
 
87
struct ia64_fix
88
  {
89
    int bigendian;                      /* byte order at fix location */
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    enum ia64_opnd opnd;
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  };
92
 
93
extern void ia64_end_of_source PARAMS((void));
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extern void ia64_start_line PARAMS((void));
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extern int ia64_unrecognized_line PARAMS((int ch));
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extern void ia64_frob_label PARAMS((struct symbol *sym));
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#ifdef TE_HPUX
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extern int ia64_frob_symbol PARAMS((struct symbol *sym));
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#endif
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extern void ia64_flush_pending_output PARAMS((void));
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extern int ia64_parse_name PARAMS((char *name, expressionS *e, char *nextP));
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extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op,
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                                      expressionS *r));
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extern void ia64_cons_align PARAMS((int));
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extern void ia64_flush_insns PARAMS((void));
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extern int ia64_fix_adjustable PARAMS((struct fix *fix));
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extern int ia64_force_relocation PARAMS((struct fix *));
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extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes,
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                                       expressionS *exp));
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extern void ia64_validate_fix PARAMS ((struct fix *fix));
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extern char * ia64_canonicalize_symbol_name PARAMS ((char *));
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extern int ia64_elf_section_letter PARAMS ((int, char **));
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extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int));
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extern int ia64_elf_section_type PARAMS ((const char *, size_t len));
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extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec));
116
extern void ia64_md_do_align PARAMS ((int, const char *, int, int));
117
extern void ia64_handle_align PARAMS ((fragS *f));
118
extern void ia64_after_parse_args PARAMS ((void));
119
extern void ia64_dwarf2_emit_offset PARAMS ((symbolS *, unsigned int));
120
extern void ia64_check_label PARAMS ((symbolS *));
121
extern int ia64_estimate_size_before_relax (fragS *, asection *);
122
extern void ia64_convert_frag (fragS *);
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)
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#ifdef TE_HPUX
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#define tc_frob_symbol(s,p)             p |= ia64_frob_symbol (s)
130
#endif /* TE_HPUX */
131
#define md_flush_pending_output()       ia64_flush_pending_output ()
132
#define md_parse_name(s,e,m,c)          ia64_parse_name (s, e, c)
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#define md_register_arithmetic          0
134
#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)
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#define TC_FORCE_RELOCATION(f)          ia64_force_relocation (f)
139
#define tc_fix_adjustable(f)            ia64_fix_adjustable (f)
140
#define MD_APPLY_SYM_VALUE(FIX)         0
141
#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
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#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)
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#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 ()
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#define TC_DWARF2_EMIT_OFFSET           ia64_dwarf2_emit_offset
160
#define tc_check_label(l)               ia64_check_label (l)
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162
/* Record if an alignment frag should end with a stop bit.  */
163
#define TC_FRAG_TYPE                    int
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#define TC_FRAG_INIT(FRAGP)             do {(FRAGP)->tc_frag_data = 0;}while (0)
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/* Give an error if a frag containing code is not aligned to a 16 byte
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   boundary.  */
168
#define md_frag_check(FRAGP) \
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  if ((FRAGP)->has_code                                                 \
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      && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 15) != 0) \
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     as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line,                  \
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                   _("instruction address is not a multiple of 16"));
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174
#define MAX_MEM_FOR_RS_ALIGN_CODE  (15 + 16)
175
 
176
#define WORKING_DOT_WORD        /* don't do broken word processing for now */
177
 
178
#define DWARF2_LINE_MIN_INSN_LENGTH 1   /* so slot-multipliers can be 1 */
179
 
180
/* 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.  */
182
 
183
/* These are the starting point masks for the various types of
184
   unwind records. To create a record of type R3 for instance, one
185
   starts by using the value UNW_R3 and or-ing in any other required values.
186
   These values are also unique (in context), so they can be used to identify
187
   the various record types as well. UNW_Bx and some UNW_Px do have the
188
   same value, but Px can only occur in a prologue context, and Bx in
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   a body context.  */
190
 
191
#define UNW_R1  0x00
192
#define UNW_R2  0x40
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#define UNW_R3  0x60
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#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
210
#define UNW_B3  0xE0
211
#define UNW_B4  0xF0
212
 
213
/* These are all the various types of unwind records.  */
214
 
215
typedef enum
216
{
217
  prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
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  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,
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  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,
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  spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
228
  spill_reg_p, unwabi, endp
229
} unw_record_type;
230
 
231
/* These structures declare the fields that can be used in each of the
232
   4 record formats, R, P, B and X.  */
233
 
234
typedef struct unw_r_record
235
{
236
  unsigned long rlen;
237
  unsigned short grmask;
238
  unsigned short grsave;
239
  /* masks to represent the union of save.g, save.f, save.b, and
240
     save.gf: */
241
  unsigned long imask_size;
242
  struct
243
  {
244
    unsigned char *i;
245
    unsigned int fr_mem;
246
    unsigned char gr_mem;
247
    unsigned char br_mem;
248
  } mask;
249
} unw_r_record;
250
 
251
typedef struct unw_p_record
252
{
253
  struct unw_rec_list *next;
254
  unsigned long t;
255
  unsigned long size;
256
  union
257
  {
258
    unsigned long sp;
259
    unsigned long psp;
260
  } off;
261
  union
262
  {
263
    unsigned short gr;
264
    unsigned short br;
265
  } r;
266
  unsigned char grmask;
267
  unsigned char brmask;
268
  unsigned int frmask;
269
  unsigned char abi;
270
  unsigned char context;
271
} unw_p_record;
272
 
273
typedef struct unw_b_record
274
{
275
  unsigned long t;
276
  unsigned long label;
277
  unsigned short ecount;
278
} unw_b_record;
279
 
280
typedef struct unw_x_record
281
{
282
  unsigned long t;
283
  union
284
  {
285
    unsigned long spoff;
286
    unsigned long pspoff;
287
    unsigned int reg;
288
  } where;
289
  unsigned short reg;
290
  unsigned short qp;
291
  unsigned short ab;    /* Value of the AB field..  */
292
  unsigned short xy;    /* Value of the XY field..  */
293
} unw_x_record;
294
 
295
/* This structure is used to determine the specific record type and
296
   its fields.  */
297
typedef struct unwind_record
298
{
299
  unw_record_type type;
300
  union {
301
    unw_r_record r;
302
    unw_p_record p;
303
    unw_b_record b;
304
    unw_x_record x;
305
  } record;
306
} unwind_record;
307
 
308
/* This expression evaluates to true if the relocation is for a local
309
   object for which we still want to do the relocation at runtime.
310
   False if we are willing to perform this relocation while building
311
   the .o file.  */
312
 
313
/* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field
314
   which has no external reloc, so we must resolve the value now.  */
315
 
316
#define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
317
  ((FIX)->fx_r_type != BFD_RELOC_UNUSED                 \
318
   && (!(FIX)->fx_pcrel                                 \
319
       || (FIX)->fx_r_type == BFD_RELOC_IA64_PLTOFF22   \
320
       || TC_FORCE_RELOCATION (FIX)))

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