gas/config/tc-tic4x.h

   1 /* tc-tic4x.h -- Assemble for the Texas TMS320C[34]X.
   2    Copyright (C) 1997, 2002, 2003, 2005 Free Software Foundation.
   3
   4    Contributed by Michael P. Hayes (m.hayes@elec.canterbury.ac.nz)
   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
  20    the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  21
  22 #define TC_TIC4X
  23 #define TIC4X
  24
  25 #ifndef BFD_ASSEMBLER
  26 #error TMS320C4x requires BFD_ASSEMBLER
  27 #endif
  28
  29 #define TARGET_ARCH bfd_arch_tic4x
  30
  31 #define WORKING_DOT_WORD
  32
  33 /* There are a number of different formats used for local labels.  gas
  34    expects local labels either of the form `10$:' or `n:', where n is
  35    a single digit.  When LOCAL_LABEL_DOLLARS is defined labels of the
  36    form `10$:' are expected.  When LOCAL_LABEL_FB is defined labels of
  37    the form `n:' are expected.  The latter are expected to be referred
  38    to using `nf' for a forward reference of `nb' for a backward
  39    reference.
  40
  41    The local labels expected by the TI tools are of the form `$n:',
  42    where the colon is optional.  Now the $ character is considered to
  43    be valid symbol name character, so gas doesn't recognise our local
  44    symbols by default.  Defining LEX_DOLLAR to be 1 means that gas
  45    won't allow labels starting with $ and thus the hook
  46    tc_unrecognized_line() will be called from read.c.  We can thus
  47    parse lines starting with $n as having local labels.
  48
  49    The other problem is the forward reference of local labels.  If a
  50    symbol is undefined, symbol_make() calls the md_undefined_symbol()
  51    hook where we create a local label if recognised.  */
  52
  53 /* Don't stick labels starting with 'L' into symbol table of COFF file. */
  54 #define LOCAL_LABEL(name) ((name)[0] == '$' || (name)[0] == 'L')
  55
  56 #define TARGET_BYTES_BIG_ENDIAN 0
  57 #define OCTETS_PER_BYTE_POWER   2
  58
  59 #define TARGET_ARCH             bfd_arch_tic4x
  60 #define BFD_ARCH                TARGET_ARCH
  61
  62 #define TC_COUNT_RELOC(x)       (x->fx_addsy)
  63 #define TC_CONS_RELOC           RELOC_32
  64 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP)
  65 #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep (frag)
  66 #define NEED_FX_R_TYPE
  67
  68 #define TIC_NOP_OPCODE          0x0c800000
  69
  70 #define reloc_type              int
  71
  72 #define NO_RELOC                0
  73
  74 /* '||' denotes parallel instruction */
  75 #define DOUBLEBAR_PARALLEL      1
  76
  77 /* Labels are not required to have a colon for a suffix.  */
  78 #define LABELS_WITHOUT_COLONS   1
  79
  80 /* Use $ as the section program counter (SPC). */
  81 #define DOLLAR_DOT
  82
  83 /* Accept numbers with a suffix, e.g. 0ffffh, 1010b.  */
  84 #define NUMBERS_WITH_SUFFIX     1
  85
  86 extern int tic4x_unrecognized_line PARAMS ((int));
  87 #define tc_unrecognized_line(c) tic4x_unrecognized_line (c)
  88
  89 #define md_number_to_chars number_to_chars_littleendian
  90
  91 extern int tic4x_do_align PARAMS ((int, const char *, int, int));
  92 #define md_do_align(n,fill,len,max,label) if( tic4x_do_align (n,fill,len,max) ) goto label;
  93
  94 /* Start of line hook to remove parallel instruction operator || */
  95 extern void tic4x_start_line PARAMS ((void));
  96 #define md_start_line_hook() tic4x_start_line()
  97
  98 extern void tic4x_cleanup PARAMS ((void));
  99 #define md_cleanup() tic4x_cleanup()
 100
 101 extern void tic4x_end PARAMS ((void));
 102 #define md_end() tic4x_end()
 103