1  /* tc-tic4x.h -- Assemble for the Texas TMS320C[34]X.
       2     Copyright (C) 1997-2023 Free Software Foundation, Inc.
       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 3, 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,
      21     Boston, MA 02110-1301, USA.  */
      22  
      23  #define TC_TIC4X
      24  #define TIC4X
      25  
      26  #define TARGET_ARCH bfd_arch_tic4x
      27  
      28  #define WORKING_DOT_WORD
      29  
      30  /* There are a number of different formats used for local labels.  gas
      31     expects local labels either of the form `10$:' or `n:', where n is
      32     a single digit.  When LOCAL_LABEL_DOLLARS is defined labels of the
      33     form `10$:' are expected.  When LOCAL_LABEL_FB is defined labels of
      34     the form `n:' are expected.  The latter are expected to be referred
      35     to using `nf' for a forward reference of `nb' for a backward
      36     reference.
      37  
      38     The local labels expected by the TI tools are of the form `$n:',
      39     where the colon is optional.  Now the $ character is considered to
      40     be valid symbol name character, so gas doesn't recognise our local
      41     symbols by default.  Defining LEX_DOLLAR to be 1 means that gas
      42     won't allow labels starting with $ and thus the hook
      43     tc_unrecognized_line() will be called from read.c.  We can thus
      44     parse lines starting with $n as having local labels.
      45  
      46     The other problem is the forward reference of local labels.  If a
      47     symbol is undefined, symbol_make() calls the md_undefined_symbol()
      48     hook where we create a local label if recognised.  */
      49  
      50  /* Don't stick labels starting with 'L' into symbol table of COFF file. */
      51  #define LOCAL_LABEL(name) ((name)[0] == '$' || (name)[0] == 'L')
      52  
      53  #define TARGET_BYTES_BIG_ENDIAN	0
      54  #define OCTETS_PER_BYTE_POWER 	2
      55  
      56  #define TARGET_ARCH		bfd_arch_tic4x
      57  
      58  #define TIC_NOP_OPCODE		0x0c800000
      59  
      60  #define reloc_type 		int
      61  
      62  #define NO_RELOC 		0
      63  
      64  /* '||' denotes parallel instruction */
      65  #define DOUBLEBAR_PARALLEL      1
      66  
      67  /* Labels are not required to have a colon for a suffix.  */
      68  #define LABELS_WITHOUT_COLONS 	1
      69  
      70  /* Use $ as the section program counter (SPC). */
      71  #define DOLLAR_DOT
      72  
      73  /* Accept numbers with a suffix, e.g. 0ffffh, 1010b.  */
      74  #define NUMBERS_WITH_SUFFIX 	1
      75  
      76  extern int tic4x_unrecognized_line (int);
      77  #define tc_unrecognized_line(c) tic4x_unrecognized_line (c)
      78  
      79  #define md_number_to_chars number_to_chars_littleendian
      80  
      81  extern int tic4x_do_align (int, const char *, int, int);
      82  #define md_do_align(n,fill,len,max,label) if( tic4x_do_align (n,fill,len,max) ) goto label;
      83  
      84  /* Start of line hook to remove parallel instruction operator || */
      85  extern void tic4x_start_line (void);
      86  #define md_start_line_hook() tic4x_start_line()
      87  
      88  extern void tic4x_cleanup (void);
      89  #define md_cleanup() tic4x_cleanup()
      90  
      91  extern void tic4x_md_finish (void);
      92  #define md_finish() tic4x_md_finish()
      93