1/* tc-riscv.h -- header file for tc-riscv.c. 2 Copyright (C) 2011-2020 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 28struct frag; 29struct 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 RISCV_FAKE_LABEL_NAME 42/* Changing the special character in FAKE_LABEL_NAME requires changing 43 FAKE_LABEL_CHAR too. */ 44#define FAKE_LABEL_CHAR RISCV_FAKE_LABEL_CHAR 45 46#define md_relax_frag(segment, fragp, stretch) \ 47 riscv_relax_frag (segment, fragp, stretch) 48extern int riscv_relax_frag (asection *, struct frag *, long); 49 50#define md_section_align(seg,size) (size) 51#define md_undefined_symbol(name) (0) 52#define md_operand(x) 53 54extern bfd_boolean riscv_frag_align_code (int); 55#define md_do_align(N, FILL, LEN, MAX, LABEL) \ 56 if ((N) != 0 && !(FILL) && !need_pass_2 && subseg_text_p (now_seg)) \ 57 { \ 58 if (riscv_frag_align_code (N)) \ 59 goto LABEL; \ 60 } 61 62extern void riscv_handle_align (fragS *); 63#define HANDLE_ALIGN riscv_handle_align 64 65#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) 66 67/* The ISA of the target may change based on command-line arguments. */ 68#define TARGET_FORMAT riscv_target_format() 69extern const char * riscv_target_format (void); 70 71#define md_after_parse_args() riscv_after_parse_args() 72extern void riscv_after_parse_args (void); 73 74#define md_parse_long_option(arg) riscv_parse_long_option (arg) 75extern int riscv_parse_long_option (const char *); 76 77#define md_pre_output_hook riscv_pre_output_hook() 78extern void riscv_pre_output_hook (void); 79 80/* Let the linker resolve all the relocs due to relaxation. */ 81#define tc_fix_adjustable(fixp) 0 82#define md_allow_local_subtract(l,r,s) 0 83 84/* Values passed to md_apply_fix don't include symbol values. */ 85#define MD_APPLY_SYM_VALUE(FIX) 0 86 87/* Global syms must not be resolved, to support ELF shared libraries. */ 88#define EXTERN_FORCE_RELOC \ 89 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 90 91/* Postpone text-section label subtraction calculation until linking, since 92 linker relaxations might change the deltas. */ 93#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ 94 (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \ 95 || ((SEG)->flags & SEC_CODE) != 0) 96#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1 97#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 98#define TC_FORCE_RELOCATION_LOCAL(FIX) 1 99#define DIFF_EXPR_OK 1 100 101extern void riscv_pop_insert (void); 102#define md_pop_insert() riscv_pop_insert () 103 104#define TARGET_USE_CFIPOP 1 105 106#define tc_cfi_frame_initial_instructions riscv_cfi_frame_initial_instructions 107extern void riscv_cfi_frame_initial_instructions (void); 108 109#define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum 110extern int tc_riscv_regname_to_dw2regnum (char *); 111 112#define DWARF2_DEFAULT_RETURN_COLUMN X_RA 113 114/* Even on RV64, use 4-byte alignment, as F registers may be only 32 bits. */ 115#define DWARF2_CIE_DATA_ALIGNMENT -4 116 117#define elf_tc_final_processing riscv_elf_final_processing 118extern void riscv_elf_final_processing (void); 119 120/* Adjust debug_line after relaxation. */ 121#define DWARF2_USE_FIXED_ADVANCE_PC 1 122 123#define md_end riscv_md_end 124#define CONVERT_SYMBOLIC_ATTRIBUTE riscv_convert_symbolic_attribute 125 126extern void riscv_md_end (void); 127extern int riscv_convert_symbolic_attribute (const char *); 128 129#endif /* TC_RISCV */ 130