gas/config/tc-loongarch.h

   1 /* tc-loongarch.h -- Header file for tc-loongarch.c.
   2    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   3    Contributed by Loongson Ltd.
   4
   5    This file is part of GAS.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the license, or
  10    (at your option) any later version.
  11
  12    GAS is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; see the file COPYING3.  If not,
  19    see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef TC_LOONGARCH
  22 #define TC_LOONGARCH
  23
  24 #include "opcode/loongarch.h"
  25
  26 #define TARGET_BYTES_BIG_ENDIAN 0
  27 #define TARGET_ARCH bfd_arch_loongarch
  28
  29 #define TARGET_MACH (loongarch_mach ())
  30 extern unsigned long loongarch_mach (void);
  31
  32 #define WORKING_DOT_WORD 1
  33 #define REPEAT_CONS_EXPRESSIONS
  34
  35 #define md_end loongarch_md_end
  36 extern void loongarch_md_end (void);
  37
  38 /* Early than md_begin.  */
  39 #define md_after_parse_args loongarch_after_parse_args
  40 extern void loongarch_after_parse_args (void);
  41
  42 extern void loongarch_pop_insert (void);
  43 #define md_pop_insert() loongarch_pop_insert ()
  44
  45 #define TARGET_FORMAT loongarch_target_format ()
  46 extern const char *loongarch_target_format (void);
  47
  48 #define md_relax_frag(segment, fragp, stretch)  \
  49   loongarch_relax_frag (segment, fragp, stretch)
  50 extern int loongarch_relax_frag (asection *, struct frag *, long);
  51 #define md_section_align(seg, size) (size)
  52 #define md_undefined_symbol(name) (0)
  53 #define md_operand(x)
  54
  55 extern bool loongarch_frag_align_code (int, int);
  56 #define md_do_align(N, FILL, LEN, MAX, LABEL)                           \
  57   if ((N) != 0 && !(FILL) && !need_pass_2 && subseg_text_p (now_seg))   \
  58     {                                                                   \
  59       if (loongarch_frag_align_code (N, MAX))                           \
  60         goto LABEL;                                                     \
  61     }
  62
  63 /* The following two macros let the linker resolve all the relocs
  64    due to relaxation.
  65
  66    This is called to see whether a reloc against a defined symbol
  67    should be converted into a reloc against a section.
  68
  69    If relax and norelax have different value may cause ld ".eh_frame_hdr
  70    refers to overlapping FDEs" error when link relax .o and norelax .o.  */
  71 #define tc_fix_adjustable(fixp) 0
  72
  73 /* Tne difference between same-section symbols may be affected by linker
  74    relaxation, so do not resolve such expressions in the assembler.  */
  75 #define md_allow_local_subtract(l,r,s) 0
  76
  77 /* If subsy of BFD_RELOC32/64 and PC in same segment, and without relax
  78    or PC at start of subsy or with relax but sub_symbol_segment not in
  79    SEC_CODE, we generate 32/64_PCREL.  */
  80 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \
  81   (!(LARCH_opts.thin_add_sub \
  82      && (BFD_RELOC_32 || BFD_RELOC_64) \
  83      && (!LARCH_opts.relax \
  84         || S_GET_VALUE (FIX->fx_subsy) \
  85            == FIX->fx_frag->fr_address + FIX->fx_where \
  86         || (LARCH_opts.relax \
  87            && ((S_GET_SEGMENT (FIX->fx_subsy)->flags & SEC_CODE) == 0)))))
  88
  89 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
  90 #define DIFF_EXPR_OK 1
  91
  92 /* Postpone text-section label subtraction calculation until linking, since
  93    linker relaxations might change the deltas.  */
  94 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC)  \
  95   (LARCH_opts.relax ?  \
  96     (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC)       \
  97       || ((SEC)->flags & SEC_CODE) != 0)                \
  98     : (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC))) \
  99
 100 #define TC_LINKRELAX_FIXUP(seg) ((seg->flags & SEC_CODE)  \
 101                                     || (seg->flags & SEC_DEBUGGING))
 102
 103 #define TC_FORCE_RELOCATION_LOCAL(FIX) 1
 104
 105 /* Values passed to md_apply_fix don't include symbol values.  */
 106 #define MD_APPLY_SYM_VALUE(FIX) 0
 107
 108 #define TARGET_USE_CFIPOP 1
 109 /* Adjust debug_line after relaxation.  */
 110 #define DWARF2_USE_FIXED_ADVANCE_PC   1
 111
 112 /* FDE Data Alignment Factor.
 113    FDE Code Alignment Factor (DWARF2_LINE_MIN_INSN_LENGTH) should be 1
 114    because DW_CFA_advance_loc need to be relocated in bytes
 115    when linker relaxation.  */
 116 #define DWARF2_CIE_DATA_ALIGNMENT     (-8)
 117 #define DWARF2_DEFAULT_RETURN_COLUMN  1     /* FDE Return Address Register.  */
 118
 119 #define tc_cfi_frame_initial_instructions       \
 120   loongarch_cfi_frame_initial_instructions
 121 extern void loongarch_cfi_frame_initial_instructions (void);
 122
 123 #define tc_symbol_new_hook(sym) \
 124   if (0 == strcmp (sym->bsym->name, FAKE_LABEL_NAME)) \
 125     S_SET_OTHER (sym, STV_HIDDEN);
 126
 127 #define tc_parse_to_dw2regnum tc_loongarch_parse_to_dw2regnum
 128 extern void tc_loongarch_parse_to_dw2regnum (expressionS *);
 129
 130 extern void loongarch_pre_output_hook (void);
 131 #define md_pre_output_hook loongarch_pre_output_hook ()
 132 #define GAS_SORT_RELOCS 1
 133
 134 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
 135
 136 #define HANDLE_ALIGN(fragp) loongarch_handle_align (fragp)
 137 extern void loongarch_handle_align (struct frag *);
 138 #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4)
 139
 140 #define elf_tc_final_processing loongarch_elf_final_processing
 141 extern void loongarch_elf_final_processing (void);
 142
 143 #define MAX_RELOC_NUMBER_A_INSN 20
 144
 145 struct reloc_info
 146 {
 147   bfd_reloc_code_real_type type;
 148   expressionS value;
 149 };
 150
 151 #define md_finish loongarch_md_finish
 152 extern void loongarch_md_finish (void);
 153
 154 #endif