1  /* tc-mep.h -- Header file for tc-mep.c.
       2     Copyright (C) 2001-2023 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 3, 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, 51 Franklin Street, Fifth Floor,
      19     Boston, MA 02110-1301, USA. */
      20  
      21  #define TC_MEP
      22  
      23  /* Support computed relocations.  */
      24  #define OBJ_COMPLEX_RELC
      25  
      26  /* Support many operands per instruction.  */
      27  #define GAS_CGEN_MAX_FIXUPS 10
      28  
      29  #define LISTING_HEADER "MEP GAS "
      30  
      31  /* The target BFD architecture.  */
      32  #define TARGET_ARCH bfd_arch_mep
      33  
      34  #define TARGET_FORMAT (target_big_endian ? "elf32-mep" : "elf32-mep-little")
      35  
      36  /* This is the default.  */
      37  #define TARGET_BYTES_BIG_ENDIAN 0
      38  
      39  /* Permit temporary numeric labels. */
      40  #define LOCAL_LABELS_FB 1
      41  
      42  /* Do not define DIFF_EXPR_OK - the MeP does not have a 32-bit PC-relative reloc.  */
      43  
      44  /* We don't need to handle .word strangely.  */
      45  #define WORKING_DOT_WORD
      46  
      47  /* Values passed to md_apply_fix don't include the symbol value.  */
      48  #define MD_APPLY_SYM_VALUE(FIX) 0
      49  
      50  #define MD_APPLY_FIX
      51  #define md_apply_fix mep_apply_fix
      52  extern void mep_apply_fix (struct fix *, valueT *, segT);
      53  
      54  /* Call md_pcrel_from_section(), not md_pcrel_from().  */
      55  #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section (FIXP, SEC)
      56  
      57  #define tc_frob_file() mep_frob_file ()
      58  extern void mep_frob_file (void);
      59  
      60  #define tc_fix_adjustable(fixP) mep_fix_adjustable (fixP)
      61  extern bool mep_fix_adjustable (struct fix *);
      62  
      63  /* After creating a fixup for an instruction operand, we need
      64     to check for HI16 relocs and queue them up for later sorting.  */
      65  #define md_cgen_record_fixup_exp  mep_cgen_record_fixup_exp
      66  
      67  /* When relaxing, we need to emit various relocs we otherwise wouldn't.  */
      68  #define TC_FORCE_RELOCATION(fix) mep_force_relocation (fix)
      69  extern int mep_force_relocation (struct fix *);
      70  
      71  #define tc_gen_reloc gas_cgen_tc_gen_reloc
      72  
      73  extern void gas_cgen_md_operand (expressionS *);
      74  #define md_operand(x) gas_cgen_md_operand (x)
      75  
      76  #define md_flush_pending_output() mep_flush_pending_output()
      77  extern int mep_flush_pending_output(void);
      78  
      79  extern const struct relax_type md_relax_table[];
      80  #define TC_GENERIC_RELAX_TABLE md_relax_table
      81  
      82  extern long mep_relax_frag (segT, fragS *, long);
      83  #define md_relax_frag mep_relax_frag
      84  
      85  /* Account for inserting a jmp after the insn.  */
      86  #define TC_CGEN_MAX_RELAX(insn, len) ((len) + 4)
      87  
      88  extern void mep_prepare_relax_scan (fragS *, offsetT *, relax_substateT);
      89  #define md_prepare_relax_scan(FRAGP, ADDR, AIM, STATE, TYPE) \
      90  	mep_prepare_relax_scan (FRAGP, &AIM, STATE)
      91  
      92  /* Support for core/vliw mode switching.  */
      93  #define CORE 0
      94  #define VLIW 1
      95  #define MAX_PARALLEL_INSNS 56 /* From email from Toshiba.  */
      96  #define VTEXT_SECTION_NAME ".vtext"
      97  
      98  /* Needed to process pending instructions when a label is encountered.  */
      99  #define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR)	\
     100    (NEXT_CHAR == ':' && mep_flush_pending_output ())
     101  
     102  #define tc_unrecognized_line(c) mep_unrecognized_line (c)
     103  extern int mep_unrecognized_line (int);
     104  #define md_cleanup mep_cleanup
     105  extern void mep_cleanup (void);
     106  
     107  #define md_elf_section_letter		mep_elf_section_letter
     108  extern bfd_vma mep_elf_section_letter (int, const char **);
     109  #define md_elf_section_flags		mep_elf_section_flags
     110  extern flagword mep_elf_section_flags  (flagword, bfd_vma, int);
     111  
     112  #define ELF_TC_SPECIAL_SECTIONS \
     113    { VTEXT_SECTION_NAME, SHT_PROGBITS, SHF_ALLOC|SHF_EXECINSTR|SHF_MEP_VLIW },
     114  
     115  /* The values of the following enum are for use with parinsnum, which
     116     is a variable in md_assemble that keeps track of whether or not the
     117     next instruction is expected to be the first or second instruction in
     118     a parallelization group.  */
     119  typedef enum exp_par_insn_{FIRST, SECOND} EXP_PAR_INSN;