gas/config/tc-riscv.h

   1 /* tc-riscv.h -- header file for tc-riscv.c.
   2    Copyright 2011-2016 Free Software Foundation, Inc.
   3
   4    Contributed by Andrew Waterman (andrew@sifive.com).
   5    Based on MIPS target.
   6
   7    This file is part of GAS.
   8
   9    GAS is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3, or (at your option)
  12    any later version.
  13
  14    GAS is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; see the file COPYING3. If not,
  21    see <http://www.gnu.org/licenses/>.  */
  22
  23 #ifndef TC_RISCV
  24 #define TC_RISCV
  25
  26 #include "opcode/riscv.h"
  27
  28 struct frag;
  29 struct expressionS;
  30
  31 #define TARGET_BYTES_BIG_ENDIAN 0
  32
  33 #define TARGET_ARCH bfd_arch_riscv
  34
  35 #define WORKING_DOT_WORD        1
  36 #define LOCAL_LABELS_FB         1
  37
  38 /* Symbols named FAKE_LABEL_NAME are emitted when generating DWARF, so make
  39    sure FAKE_LABEL_NAME is printable.  It still must be distinct from any
  40    real label name.  So, append a space, which other labels can't contain.  */
  41 #define FAKE_LABEL_NAME ".L0 "
  42
  43 #define md_relax_frag(segment, fragp, stretch) \
  44   riscv_relax_frag (segment, fragp, stretch)
  45 extern int riscv_relax_frag (asection *, struct frag *, long);
  46
  47 #define md_section_align(seg,size)      (size)
  48 #define md_undefined_symbol(name)       (0)
  49 #define md_operand(x)
  50
  51 /* FIXME: it is unclear if this is used, or if it is even correct.  */
  52 #define MAX_MEM_FOR_RS_ALIGN_CODE  (1 + 2)
  53
  54 /* The ISA of the target may change based on command-line arguments.  */
  55 #define TARGET_FORMAT riscv_target_format()
  56 extern const char * riscv_target_format (void);
  57
  58 #define md_after_parse_args() riscv_after_parse_args()
  59 extern void riscv_after_parse_args (void);
  60
  61 #define md_parse_long_option(arg) riscv_parse_long_option (arg)
  62 extern int riscv_parse_long_option (const char *);
  63
  64 #define md_pre_output_hook riscv_pre_output_hook()
  65 extern void riscv_pre_output_hook (void);
  66
  67 /* Let the linker resolve all the relocs due to relaxation.  */
  68 #define tc_fix_adjustable(fixp) 0
  69 #define md_allow_local_subtract(l,r,s) 0
  70
  71 /* Values passed to md_apply_fix don't include symbol values.  */
  72 #define MD_APPLY_SYM_VALUE(FIX) 0
  73
  74 /* Global syms must not be resolved, to support ELF shared libraries.  */
  75 #define EXTERN_FORCE_RELOC                      \
  76   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
  77
  78 /* Postpone text-section label subtraction calculation until linking, since
  79    linker relaxations might change the deltas.  */
  80 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) ((SEG)->flags & SEC_CODE)
  81 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
  82 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
  83 #define TC_FORCE_RELOCATION_LOCAL(FIX) 1
  84 #define DIFF_EXPR_OK 1
  85
  86 extern void riscv_pop_insert (void);
  87 #define md_pop_insert()         riscv_pop_insert ()
  88
  89 #define TARGET_USE_CFIPOP 1
  90
  91 #define tc_cfi_frame_initial_instructions riscv_cfi_frame_initial_instructions
  92 extern void riscv_cfi_frame_initial_instructions (void);
  93
  94 #define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum
  95 extern int tc_riscv_regname_to_dw2regnum (char *);
  96
  97 #define DWARF2_DEFAULT_RETURN_COLUMN X_RA
  98
  99 /* Even on RV64, use 4-byte alignment, as F registers may be only 32 bits.  */
 100 #define DWARF2_CIE_DATA_ALIGNMENT -4
 101
 102 #define elf_tc_final_processing riscv_elf_final_processing
 103 extern void riscv_elf_final_processing (void);
 104
 105 #endif /* TC_RISCV */