1 /* tc-riscv.h -- header file for tc-riscv.c. 2 Copyright (C) 2011-2021 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 #ifndef TARGET_BYTES_BIG_ENDIAN 32 #define TARGET_BYTES_BIG_ENDIAN 0 33 #endif 34 35 #define TARGET_ARCH bfd_arch_riscv 36 37 #define WORKING_DOT_WORD 1 38 #define LOCAL_LABELS_FB 1 39 40 /* Symbols named FAKE_LABEL_NAME are emitted when generating DWARF, so make 41 sure FAKE_LABEL_NAME is printable. It still must be distinct from any 42 real label name. So, append a space, which other labels can't contain. */ 43 #define FAKE_LABEL_NAME RISCV_FAKE_LABEL_NAME 44 /* Changing the special character in FAKE_LABEL_NAME requires changing 45 FAKE_LABEL_CHAR too. */ 46 #define FAKE_LABEL_CHAR RISCV_FAKE_LABEL_CHAR 47 48 #define md_relax_frag(segment, fragp, stretch) \ 49 riscv_relax_frag (segment, fragp, stretch) 50 extern int riscv_relax_frag (asection *, struct frag *, long); 51 52 #define md_section_align(seg,size) (size) 53 #define md_undefined_symbol(name) (0) 54 #define md_operand(x) 55 56 extern bool riscv_frag_align_code (int); 57 #define md_do_align(N, FILL, LEN, MAX, LABEL) \ 58 if ((N) != 0 && !(FILL) && !need_pass_2 && subseg_text_p (now_seg)) \ 59 { \ 60 if (riscv_frag_align_code (N)) \ 61 goto LABEL; \ 62 } 63 64 extern void riscv_handle_align (fragS *); 65 #define HANDLE_ALIGN riscv_handle_align 66 67 #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) 68 69 /* The ISA of the target may change based on command-line arguments. */ 70 #define TARGET_FORMAT riscv_target_format () 71 extern const char * riscv_target_format (void); 72 73 #define md_after_parse_args() riscv_after_parse_args () 74 extern void riscv_after_parse_args (void); 75 76 #define md_parse_long_option(arg) riscv_parse_long_option (arg) 77 extern int riscv_parse_long_option (const char *); 78 79 #define md_pre_output_hook riscv_pre_output_hook () 80 extern void riscv_pre_output_hook (void); 81 82 /* Let the linker resolve all the relocs due to relaxation. */ 83 #define tc_fix_adjustable(fixp) 0 84 #define md_allow_local_subtract(l,r,s) 0 85 86 /* Values passed to md_apply_fix don't include symbol values. */ 87 #define MD_APPLY_SYM_VALUE(FIX) 0 88 89 /* Global syms must not be resolved, to support ELF shared libraries. */ 90 #define EXTERN_FORCE_RELOC \ 91 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 92 93 /* Postpone text-section label subtraction calculation until linking, since 94 linker relaxations might change the deltas. */ 95 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ 96 (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \ 97 || ((SEG)->flags & SEC_CODE) != 0) 98 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1 99 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 100 #define TC_FORCE_RELOCATION_LOCAL(FIX) 1 101 #define DIFF_EXPR_OK 1 102 103 extern void riscv_pop_insert (void); 104 #define md_pop_insert() riscv_pop_insert () 105 106 #define TARGET_USE_CFIPOP 1 107 108 #define tc_cfi_frame_initial_instructions riscv_cfi_frame_initial_instructions 109 extern void riscv_cfi_frame_initial_instructions (void); 110 111 #define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum 112 extern int tc_riscv_regname_to_dw2regnum (char *); 113 114 #define DWARF2_DEFAULT_RETURN_COLUMN X_RA 115 116 /* Even on RV64, use 4-byte alignment, as F registers may be only 32 bits. */ 117 #define DWARF2_CIE_DATA_ALIGNMENT -4 118 119 #define elf_tc_final_processing riscv_elf_final_processing 120 extern void riscv_elf_final_processing (void); 121 122 /* Adjust debug_line after relaxation. */ 123 #define DWARF2_USE_FIXED_ADVANCE_PC 1 124 125 #define md_end riscv_md_end 126 #define CONVERT_SYMBOLIC_ATTRIBUTE riscv_convert_symbolic_attribute 127 128 extern void riscv_md_end (void); 129 extern int riscv_convert_symbolic_attribute (const char *); 130 131 #endif /* TC_RISCV */ 132