gas/config/tc-maxq.h

   1 /* tc-maxq.h -- Header file for the asssembler(MAXQ)
   2
   3    Copyright 2004  Free Software Foundation, Inc.
   4
   5    Contributed by HCL Technologies Pvt. Ltd.
   6
   7    Written by Vineet Sharma(vineets@noida.hcltech.com) Inderpreet
   8    S.(inderpreetb@noida.hcltech.com)
   9
  10    This file is part of GAS.
  11
  12    GAS is free software; you can redistribute it and/or modify it under the
  13    terms of the GNU General Public License as published by the Free Software
  14    Foundation; either version 2, or (at your option) any later version.
  15
  16    GAS is distributed in the hope that it will be useful, but WITHOUT ANY
  17    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  19    details.
  20
  21    You should have received a copy of the GNU General Public License along
  22    with GAS; see the file COPYING.  If not, write to the Free Software
  23    Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  24
  25 #ifndef  _TC_MAXQ_H_
  26 #define  _TC_MAXQ_H_
  27
  28 #ifndef NO_RELOC
  29 #define NO_RELOC 0
  30 #endif
  31
  32 /* `md_short_jump_size' `md_long_jump_size' `md_create_short_jump'
  33    `md_create_long_jump' If `WORKING_DOT_WORD' is defined, GAS will not do
  34    broken word processing (*note Broken words::.).  Otherwise, you should set
  35    `md_short_jump_size' to the size of a short jump (a jump that is just long
  36    enough to jump around a long jmp) and `md_long_jump_size' to the size of a
  37    long jump (a jump that can go anywhere in the function), You should define
  38    `md_create_short_jump' to create a short jump around a long jump, and
  39    define `md_create_long_jump' to create a long jump.  */
  40 #define WORKING_DOT_WORD
  41 typedef enum _RELOC_ENUM
  42 {
  43   MAXQ_WORDDATA = 5,            /* Word+n.  */
  44   MAXQ_LONGDATA = 2,            /* Long+n.  */
  45   MAXQ_INTERSEGMENT = 4,        /* Text to any other segment.  */
  46   MAXQ_SHORTJUMP = BFD_RELOC_16_PCREL_S2,       /* PC Relative.  */
  47   MAXQ_LONGJUMP = 6,            /* Absolute Jump.  */
  48   EXTERNAL_RELOC = 8,
  49   INTERSEGMENT_RELOC
  50 }
  51 RELOC_ENUM;
  52
  53 #ifndef NEED_FX_R_TYPE
  54 #define NEED_FX_R_TYPE          /* For defining our own rloc type.  */
  55 #endif
  56
  57 #ifndef MAX_STACK
  58 #define MAX_STACK 0xf
  59 #endif
  60
  61 #ifndef TC_MAXQ20
  62 #define TC_MAXQ20 1
  63 #endif
  64
  65 #ifndef MAX_OPERAND_SIZE
  66 #define MAX_OPERAND_SIZE 255
  67 #endif
  68
  69 #ifndef MAXQ_INSTRUCTION_SIZE
  70 #define MAXQ_INSTRUCTION_SIZE 2 /* 16 - BITS */
  71 #endif
  72
  73 #if MAXQ_INSTRUCTION_SIZE
  74 #define MAXQ_OCTETS_PER_BYTE    MAXQ_INSTRUCTION_SIZE
  75 #else
  76 #define MAXQ_OCTETS_PER_BYTE    OCTETS_PER_BYTE
  77 #endif
  78
  79 /* if this macro is defined gas will use this instead of comment_chars.  */
  80 #define tc_comments_chars maxq20_comment_chars
  81
  82 #define tc_coff_symbol_emit_hook(a)     ;       /* not used */
  83
  84 #define md_section_align(SEGMENT, SIZE)     (SIZE)
  85
  86 /* Locally defined symbol shoudnot be adjusted to section symbol.  */
  87 #define tc_fix_adjustable(FIX) 0
  88
  89 #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep (frag)
  90 extern int tc_coff_sizemachdep (fragS * frag);
  91
  92 /* This specifies that the target has been defined as little endian -
  93    default.  */
  94 #define TARGET_BYTES_BIG_ENDIAN 0
  95
  96 #define MAX_MEM_NAME_SIZE 12
  97 #define MAX_REG_NAME_SIZE  7
  98 #define MAX_MNEM_SIZE      8
  99
 100 #define END_OF_INSN '\0'
 101
 102 /* This macro is the BFD archetectureto pass to 'bfd_set_arch_mach'.  */
 103 #define TARGET_ARCH             bfd_arch_maxq
 104
 105 /* This macro is the BFD machine number to pass to 'bfd_set_arch_mach'.
 106    If not defines GAS will use 0.  */
 107 #define TARGET_MACH             maxq20_mach ()
 108 extern unsigned long maxq20_mach (void);
 109
 110 /* COFF format.  */
 111 #ifndef BFD_ASSEMBLER
 112
 113 /* Defines the magic number we are using for the maxq-coff. defined in coff.h.  */
 114 #define COFF_MAGIC   MAXQ20MAGIC
 115 #define BFD_ARCH     bfd_arch_maxq
 116
 117 /* Whether the reloc should be outputted to the file or not. This
 118    is only true if the symbol we are relocating for is not empty.  */
 119 #define TC_COUNT_RELOC(fixp) ((fixp) -> fx_addsy != NULL)
 120
 121 /* This macro translates between an internal fix and an coff reloc type.  */
 122 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP)
 123 extern short tc_coff_fix2rtype (struct fix *);
 124
 125 #endif /* BFD_ASSEMBLER */
 126
 127 #ifndef LEX_AT
 128 /* We define this macro to generate a fixup for a data allocation pseudo-op.  */
 129 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) maxq20_cons_fix_new (FRAG,OFF,LEN,EXP)
 130 extern void maxq20_cons_fix_new (fragS *, unsigned int, unsigned int, expressionS *);
 131 #endif
 132
 133 /* Define md_number_to_chars as the appropriate standard big endian or This
 134    should just call either `number_to_chars_bigendian' or
 135    `number_to_chars_littleendian', whichever is appropriate.  On targets like
 136    the MIPS which support options to change the endianness, which function to
 137    call is a runtime decision.  On other targets, `md_number_to_chars' can be
 138    a simple macro.  */
 139 #define md_number_to_chars maxq_number_to_chars
 140 extern void maxq_number_to_chars (char *, valueT, int);
 141
 142 /* If this macro is defined, it is a pointer to a NULL terminated list of
 143    chracters which may appear in an operand. GAS already assumes that all
 144    alphanumeric chracters, and '$', '.', and '_' may appear in an
 145    operand("symbol_char"in app.c). This macro may be defined to treat
 146    additional chracters as appearing in an operand. This affects the way in
 147    which GAS removes whitespaces before passing the string to md_assemble.  */
 148 #define tc_symbol_chars_extra_symbol_chars
 149
 150 /* Define away the call to md_operand in the expression parsing code. This is
 151    called whenever the expression parser can't parse the input and gives the
 152    assembler backend a chance to deal with it instead.  */
 153 #define md_operand(x)
 154
 155 #define MAX_OPERANDS           2        /* Max operands per instruction.  */
 156 #define MAX_IMMEDIATE_OPERANDS 1        /* Max immediate operands per instruction.  */
 157 #define MAX_MEMORY_OPERANDS    1        /* Max memory operands per instruction.  */
 158
 159 /* Define the prefix we are using while trying to use an immediate value in
 160    an instruction. e.g move A[0], #03h.  */
 161 #define IMMEDIATE_PREFIX '#'
 162
 163 #define ABSOLUTE_PREFIX '@'
 164
 165 /* This here defines the opcode of the nop operation on the MAXQ. We did
 166    declare it here when we tried to fill the align bites with nop's but GAS
 167    only expects nop's to be single byte instruction.  */
 168 #define NOP_OPCODE (char)0xDA3A
 169
 170 #define SIZE_OF_PM sizeof(pmodule)      /* Size of the structure.  */
 171
 172 #endif /* TC_MAXQ_H */