gas/config/tc-avr.h

   1 /* This file is tc-avr.h
   2    Copyright (C) 1999, 2000 Free Software Foundation, Inc.
   3
   4    Contributed by Denis Chertykov <denisc@overta.ru>
   5
   6    This file is part of GAS, the GNU Assembler.
   7
   8    GAS is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    GAS is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with GAS; see the file COPYING.  If not, write to the Free
  20    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21    02111-1307, USA.  */
  22
  23 #ifndef BFD_ASSEMBLER
  24  #error AVR support requires BFD_ASSEMBLER
  25 #endif
  26
  27
  28 #define TC_AVR
  29 /*   By convention, you should define this macro in the `.h' file.  For
  30      example, `tc-m68k.h' defines `TC_M68K'.  You might have to use this
  31      if it is necessary to add CPU specific code to the object format
  32      file. */
  33
  34 #define TARGET_FORMAT "elf32-avr"
  35 /*   This macro is the BFD target name to use when creating the output
  36      file.  This will normally depend upon the `OBJ_FMT' macro. */
  37
  38 #define TARGET_ARCH bfd_arch_avr
  39 /*   This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */
  40
  41 #define TARGET_MACH 0
  42 /*   This macro is the BFD machine number to pass to
  43      `bfd_set_arch_mach'.  If it is not defined, GAS will use 0. */
  44
  45 #define TARGET_BYTES_BIG_ENDIAN 0
  46 /*   You should define this macro to be non-zero if the target is big
  47      endian, and zero if the target is little endian. */
  48
  49 #define ONLY_STANDARD_ESCAPES
  50 /*   If you define this macro, GAS will warn about the use of
  51      nonstandard escape sequences in a string. */
  52
  53 #define md_operand(x)
  54 /*   GAS will call this function for any expression that can not be
  55      recognized.  When the function is called, `input_line_pointer'
  56      will point to the start of the expression. */
  57
  58 void avr_parse_cons_expression (expressionS *exp, int nbytes);
  59
  60 #define TC_PARSE_CONS_EXPRESSION(EXPR,N) avr_parse_cons_expression (EXPR,N)
  61 /*
  62      You may define this macro to parse an expression used in a data
  63      allocation pseudo-op such as `.word'.  You can use this to
  64      recognize relocation directives that may appear in such directives.*/
  65
  66 void avr_cons_fix_new(fragS *frag,int where, int nbytes, expressionS *exp);
  67
  68 #define TC_CONS_FIX_NEW(FRAG,WHERE,N,EXP) avr_cons_fix_new(FRAG,WHERE,N,EXP)
  69 /*   You may define this macro to generate a fixup for a data
  70      allocation pseudo-op. */
  71
  72 #define md_number_to_chars number_to_chars_littleendian
  73 /*   This should just call either `number_to_chars_bigendian' or
  74      `number_to_chars_littleendian', whichever is appropriate.  On
  75      targets like the MIPS which support options to change the
  76      endianness, which function to call is a runtime decision.  On
  77      other targets, `md_number_to_chars' can be a simple macro. */
  78
  79 #define WORKING_DOT_WORD
  80 /*
  81 `md_short_jump_size'
  82 `md_long_jump_size'
  83 `md_create_short_jump'
  84 `md_create_long_jump'
  85      If `WORKING_DOT_WORD' is defined, GAS will not do broken word
  86      processing (*note Broken words::.).  Otherwise, you should set
  87      `md_short_jump_size' to the size of a short jump (a jump that is
  88      just long enough to jump around a long jmp) and
  89      `md_long_jump_size' to the size of a long jump (a jump that can go
  90      anywhere in the function), You should define
  91      `md_create_short_jump' to create a short jump around a long jump,
  92      and define `md_create_long_jump' to create a long jump. */
  93
  94 #define MD_APPLY_FIX3
  95
  96 #define TC_HANDLES_FX_DONE
  97
  98 #undef RELOC_EXPANSION_POSSIBLE
  99 /*   If you define this macro, it means that `tc_gen_reloc' may return
 100      multiple relocation entries for a single fixup.  In this case, the
 101      return value of `tc_gen_reloc' is a pointer to a null terminated
 102      array. */
 103
 104 #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
 105 /*   If you define this macro, it should return the offset between the
 106      address of a PC relative fixup and the position from which the PC
 107      relative adjustment should be made.  On many processors, the base
 108      of a PC relative instruction is the next instruction, so this
 109      macro would return the length of an instruction. */
 110
 111 extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
 112
 113 #define LISTING_WORD_SIZE 2
 114 /*   The number of bytes to put into a word in a listing.  This affects
 115      the way the bytes are clumped together in the listing.  For
 116      example, a value of 2 might print `1234 5678' where a value of 1
 117      would print `12 34 56 78'.  The default value is 4. */
 118
 119 #define LEX_DOLLAR 0
 120 /* AVR port uses `$' as a logical line separator */