gas/config/tc-sh64.h

   1 /* This file is tc-sh64.h
   2    Copyright (C) 2000, 2001 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    GAS is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GAS; see the file COPYING.  If not, write to
  18    the Free Software Foundation, 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #define TC_SH64
  22 #include "config/tc-sh.h"
  23 #include "elf/sh.h"
  24
  25 /* We need to override the tc-sh.h settings of HANDLE_ALIGN and
  26    MAX_MEM_FOR_RS_ALIGN_CODE; we might need to put in SHmedia NOP:s, not
  27    SHcompact NOP:s.  */
  28 #undef  HANDLE_ALIGN
  29 #define HANDLE_ALIGN(frag) sh64_handle_align (frag)
  30 extern void sh64_handle_align PARAMS ((fragS *));
  31
  32 #undef  MAX_MEM_FOR_RS_ALIGN_CODE
  33 #define MAX_MEM_FOR_RS_ALIGN_CODE sh64_max_mem_for_rs_align_code ()
  34 extern int sh64_max_mem_for_rs_align_code PARAMS ((void));
  35
  36 #undef  LISTING_HEADER
  37 #define LISTING_HEADER                                  \
  38   (target_big_endian ?                                  \
  39      "Hitachi SHcompact/SHmedia Big Endian GAS"         \
  40    : "Hitachi SHcompact/SHmedia Little Endian GAS")
  41
  42 /* We need to record the new frag position after an .align.  */
  43 extern void sh64_do_align PARAMS ((int, const char *, int, int));
  44 #define md_do_align(n, fill, len, max, l) \
  45  do { sh64_do_align (n, fill, len, max); goto l; } while (0)
  46
  47 struct sh64_segment_info_type
  48 {
  49   /* The type of the section is initialized when the range_start_symbol
  50      member is non-NULL.  */
  51   symbolS *mode_start_symbol;
  52   subsegT mode_start_subseg;
  53
  54   /* A stored symbol indicating location of last call of
  55      "md_flush_pending_output".  It is NULLed when we actually use it;
  56      otherwise the contents is just filled in with segment, frag and
  57      offset within frag.  */
  58   symbolS *last_contents_mark;
  59
  60   unsigned int emitted_ranges;
  61   enum sh64_elf_cr_type contents_type;
  62
  63   /* This is used by the SH1-4 parts; we set it to 0 for SHmedia code and
  64      data.  */
  65   unsigned int in_code : 1;
  66 };
  67
  68 #undef  TC_SEGMENT_INFO_TYPE
  69 #define TC_SEGMENT_INFO_TYPE struct sh64_segment_info_type
  70
  71 #undef  TARGET_FORMAT
  72 #define TARGET_FORMAT sh64_target_format ()
  73 extern const char *sh64_target_format PARAMS ((void));
  74
  75 #define TARGET_MACH sh64_target_mach ()
  76 extern int sh64_target_mach PARAMS ((void));
  77
  78 #undef TC_RELOC_RTSYM_LOC_FIXUP
  79 #define TC_RELOC_RTSYM_LOC_FIXUP(FIX)                           \
  80   ((FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL                   \
  81    && (FIX)->fx_r_type != BFD_RELOC_SH_PLT_LOW16                \
  82    && (FIX)->fx_r_type != BFD_RELOC_SH_PLT_MEDLOW16             \
  83    && (FIX)->fx_r_type != BFD_RELOC_SH_PLT_MEDHI16              \
  84    && (FIX)->fx_r_type != BFD_RELOC_SH_PLT_HI16                 \
  85    && (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL                \
  86    && (FIX)->fx_r_type != BFD_RELOC_SH_GOT_LOW16                \
  87    && (FIX)->fx_r_type != BFD_RELOC_SH_GOT_MEDLOW16             \
  88    && (FIX)->fx_r_type != BFD_RELOC_SH_GOT_MEDHI16              \
  89    && (FIX)->fx_r_type != BFD_RELOC_SH_GOT_HI16                 \
  90    && (FIX)->fx_r_type != BFD_RELOC_SH_GOT10BY4                 \
  91    && (FIX)->fx_r_type != BFD_RELOC_SH_GOT10BY8                 \
  92    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT32                 \
  93    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT_LOW16             \
  94    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT_MEDLOW16          \
  95    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT_MEDHI16           \
  96    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT_HI16              \
  97    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT10BY4              \
  98    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPLT10BY8              \
  99    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC                    \
 100    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC_LOW16              \
 101    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC_MEDLOW16           \
 102    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC_MEDHI16            \
 103    && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC_HI16               \
 104    && ((FIX)->fx_addsy == NULL                                  \
 105        || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                    \
 106            && ! S_IS_WEAK ((FIX)->fx_addsy)                     \
 107            && S_IS_DEFINED ((FIX)->fx_addsy)                    \
 108            && ! S_IS_COMMON ((FIX)->fx_addsy))))
 109
 110 /* Note the kludge: we want to put back C, and we also want to consume the
 111    expression, since we have handled it ourselves.  FIXME: What we really
 112    need is a new GAS infrastructure feature: md_qualifier.  */
 113 #undef md_parse_name
 114 #define md_parse_name(NAME, EXP, CP) \
 115  sh64_consume_datalabel (NAME, EXP, CP, operand)
 116 extern int sh64_consume_datalabel
 117  PARAMS ((const char *, expressionS *, char *, segT (*) (expressionS *)));
 118
 119 /* Saying "$" is the same as saying ".".  */
 120 #define DOLLAR_DOT
 121
 122 #undef MD_PCREL_FROM_SECTION
 123 #define MD_PCREL_FROM_SECTION(FIXP, SEC)                \
 124   shmedia_md_pcrel_from_section (FIXP, SEC)
 125
 126 extern valueT shmedia_md_pcrel_from_section PARAMS ((struct fix *, segT));
 127
 128 /* We need to mark this symbol as a BranchTarget; setting st_other for it
 129    and adding 1 to its value (temporarily).  */
 130 extern void sh64_frob_label PARAMS ((symbolS *));
 131
 132 #undef  tc_frob_label
 133 #define tc_frob_label(sym) \
 134   do { sh_frob_label (); sh64_frob_label (sym); } while (0)
 135
 136 #define tc_symbol_new_hook(s) sh64_frob_label (s)
 137
 138 /* We use this to mark our "datalabel" symbol copies.  The "mark" is NULL
 139    for an ordinary symbol, and the pointer to the "ordinary" symbol for a
 140    datalabel symbol.  */
 141 #define TC_SYMFIELD_TYPE symbolS *
 142
 143 #define tc_frob_symbol(symp, punt)              \
 144  do                                             \
 145    {                                            \
 146      punt = sh64_exclude_symbol (symp);         \
 147    }                                            \
 148  while (0)
 149
 150 extern int sh64_exclude_symbol PARAMS ((symbolS *));
 151
 152 extern void sh64_adjust_symtab PARAMS ((void));
 153 #define tc_adjust_symtab sh64_adjust_symtab
 154
 155 #undef  md_flush_pending_output
 156 #define md_flush_pending_output() sh64_flush_pending_output ()
 157 extern void sh64_flush_pending_output PARAMS ((void));
 158
 159 /* Note that tc-sh.c has a sh_frob_section, but it's called from
 160    tc_frob_file_before_adjust.  */
 161 #define tc_frob_section(sec) shmedia_frob_section_type (sec)
 162 extern void shmedia_frob_section_type PARAMS ((asection *));
 163
 164 #define ELF_TC_SPECIAL_SECTIONS \
 165   { ".cranges", SHT_PROGBITS,   0 },
 166
 167 /* We need to emit fixups relative to the frag in which the instruction
 168    resides.  Safest way without calculating max fragment growth or making
 169    it a fixed number is to provide a pointer to the opcode frag.
 170
 171    We also need to emit the right NOP pattern in .align frags.  This is
 172    done after the text-to-bits assembly pass, so we need to mark it with
 173    the ISA setting at the time the .align was assembled.  */
 174 #define TC_FRAG_TYPE struct sh64_tc_frag_data
 175
 176 enum sh64_isa_values
 177  {
 178    sh64_isa_unspecified,
 179    sh64_isa_shcompact,
 180    sh64_isa_shmedia,
 181
 182    /* Special guard value used in contexts when we don't know which ISA it
 183       is, just that it's specified (not sh64_isa_unspecified).  */
 184    sh64_isa_sh5_guard
 185  };
 186
 187 struct sh64_tc_frag_data
 188 {
 189   fragS *opc_frag;
 190   enum sh64_isa_values isa;
 191 };
 192
 193 extern enum sh64_isa_values sh64_isa_mode;
 194
 195 #define TC_FRAG_INIT(FRAGP)                                     \
 196  do                                                             \
 197    {                                                            \
 198      (FRAGP)->tc_frag_data.opc_frag = sh64_last_insn_frag;      \
 199      (FRAGP)->tc_frag_data.isa = sh64_isa_mode;                 \
 200    }                                                            \
 201  while (0)
 202
 203 /* This variable is set whenever we generate (or grow) a new opcode frag
 204    in shmedia_build_Mytes.  */
 205 extern fragS *sh64_last_insn_frag;
 206
 207 #define md_end() shmedia_md_end ()
 208 void shmedia_md_end PARAMS ((void));
 209
 210 /* Because we make .debug_line hold the SHmedia instruction address | 1,
 211    we have to say we only have minimum byte-size insns.  */
 212 #undef  DWARF2_LINE_MIN_INSN_LENGTH
 213 #define DWARF2_LINE_MIN_INSN_LENGTH 1