gas/config/tc-mips.h

   1 /* tc-mips.h -- header file for tc-mips.c.
   2    Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004,
   3    2005, 2006, 2007  Free Software Foundation, Inc.
   4    Contributed by the OSF and Ralph Campbell.
   5    Written by Keith Knowles and Ralph Campbell, working independently.
   6    Modified for ECOFF support by Ian Lance Taylor of Cygnus Support.
   7
   8    This file is part of GAS.
   9
  10    GAS is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3, or (at your option)
  13    any later version.
  14
  15    GAS is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with GAS; see the file COPYING.  If not, write to the Free
  22    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  23    02110-1301, USA.  */
  24
  25 #ifndef TC_MIPS
  26 #define TC_MIPS
  27
  28 struct frag;
  29 struct expressionS;
  30
  31 /* Default to big endian.  */
  32 #ifndef TARGET_BYTES_BIG_ENDIAN
  33 #define TARGET_BYTES_BIG_ENDIAN         1
  34 #endif
  35
  36 #define TARGET_ARCH bfd_arch_mips
  37
  38 #define WORKING_DOT_WORD        1
  39 #define OLD_FLOAT_READS
  40 #define REPEAT_CONS_EXPRESSIONS
  41 #define RELOC_EXPANSION_POSSIBLE
  42 #define MAX_RELOC_EXPANSION 3
  43 #define LOCAL_LABELS_FB 1
  44
  45 /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16
  46    relocation.  */
  47 #define MAX_GPREL_OFFSET (0x7FF0)
  48
  49 #define md_relax_frag(segment, fragp, stretch) \
  50   mips_relax_frag(segment, fragp, stretch)
  51 extern int mips_relax_frag (asection *, struct frag *, long);
  52
  53 #define md_undefined_symbol(name)       (0)
  54 #define md_operand(x)
  55
  56 extern char mips_nop_opcode (void);
  57 #define NOP_OPCODE (mips_nop_opcode ())
  58
  59 extern void mips_handle_align (struct frag *);
  60 #define HANDLE_ALIGN(fragp)  mips_handle_align (fragp)
  61
  62 #define MAX_MEM_FOR_RS_ALIGN_CODE  (1 + 2)
  63
  64 struct insn_label_list;
  65 struct mips_segment_info {
  66   struct insn_label_list *labels;
  67   unsigned int mips16 : 1;
  68 };
  69 #define TC_SEGMENT_INFO_TYPE struct mips_segment_info
  70
  71 /* This field is nonzero if the symbol is the target of a MIPS16 jump.  */
  72 #define TC_SYMFIELD_TYPE int
  73
  74 /* Tell assembler that we have an itbl_mips.h header file to include.  */
  75 #define HAVE_ITBL_CPU
  76
  77 /* The endianness of the target format may change based on command
  78    line arguments.  */
  79 #define TARGET_FORMAT mips_target_format()
  80 extern const char *mips_target_format (void);
  81
  82 /* MIPS PIC level.  */
  83
  84 enum mips_pic_level
  85 {
  86   /* Do not generate PIC code.  */
  87   NO_PIC,
  88
  89   /* Generate PIC code as in the SVR4 MIPS ABI.  */
  90   SVR4_PIC,
  91
  92   /* VxWorks's PIC model.  */
  93   VXWORKS_PIC
  94 };
  95
  96 extern enum mips_pic_level mips_pic;
  97
  98 extern int tc_get_register (int frame);
  99
 100 #define md_after_parse_args() mips_after_parse_args()
 101 extern void mips_after_parse_args (void);
 102
 103 #define tc_init_after_args() mips_init_after_args()
 104 extern void mips_init_after_args (void);
 105
 106 #define md_parse_long_option(arg) mips_parse_long_option (arg)
 107 extern int mips_parse_long_option (const char *);
 108
 109 #define tc_frob_label(sym) mips_define_label (sym)
 110 extern void mips_define_label (symbolS *);
 111
 112 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
 113 extern void mips_frob_file_before_adjust (void);
 114
 115 #define tc_frob_file_before_fix() mips_frob_file ()
 116 extern void mips_frob_file (void);
 117
 118 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 119 #define tc_frob_file_after_relocs mips_frob_file_after_relocs
 120 extern void mips_frob_file_after_relocs (void);
 121 #endif
 122
 123 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
 124 extern int mips_fix_adjustable (struct fix *);
 125
 126 /* Values passed to md_apply_fix don't include symbol values.  */
 127 #define MD_APPLY_SYM_VALUE(FIX) 0
 128
 129 /* Global syms must not be resolved, to support ELF shared libraries.  */
 130 #define EXTERN_FORCE_RELOC                      \
 131   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
 132
 133 /* When generating NEWABI code, we may need to have to keep combined
 134    relocations which don't have symbols.  */
 135 #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX)
 136 extern int mips_force_relocation (struct fix *);
 137
 138 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
 139   (! SEG_NORMAL (SEG) || mips_force_relocation (FIX))
 140
 141 /* Register mask variables.  These are set by the MIPS assembly code
 142    and used by ECOFF and possibly other object file formats.  */
 143 extern unsigned long mips_gprmask;
 144 extern unsigned long mips_cprmask[4];
 145
 146 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 147
 148 #define elf_tc_final_processing mips_elf_final_processing
 149 extern void mips_elf_final_processing (void);
 150
 151 #endif
 152
 153 extern void md_mips_end (void);
 154 #define md_end()        md_mips_end()
 155
 156 extern void mips_pop_insert (void);
 157 #define md_pop_insert()         mips_pop_insert()
 158
 159 extern void mips_emit_delays (void);
 160 #define md_flush_pending_output mips_emit_delays
 161
 162 extern void mips_enable_auto_align (void);
 163 #define md_elf_section_change_hook()    mips_enable_auto_align()
 164
 165 enum dwarf2_format;
 166 extern enum dwarf2_format mips_dwarf2_format (asection *);
 167 #define DWARF2_FORMAT(SEC) mips_dwarf2_format (SEC)
 168
 169 extern int mips_dwarf2_addr_size (void);
 170 #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size ()
 171 #define DWARF2_FDE_RELOC_SIZE mips_dwarf2_addr_size ()
 172
 173 #define TARGET_USE_CFIPOP 1
 174
 175 #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions
 176 extern void mips_cfi_frame_initial_instructions (void);
 177
 178 #define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum
 179 extern int tc_mips_regname_to_dw2regnum (char *regname);
 180
 181 #define DWARF2_DEFAULT_RETURN_COLUMN 31
 182 #define DWARF2_CIE_DATA_ALIGNMENT (-4)
 183
 184 #endif /* TC_MIPS */