tc-riscv.h revision 1.6
1/* tc-riscv.h -- header file for tc-riscv.c. 2 Copyright (C) 2011-2022 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#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) 50extern 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 56extern 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 64extern 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 () 71extern const char * riscv_target_format (void); 72 73#define md_after_parse_args() riscv_after_parse_args () 74extern void riscv_after_parse_args (void); 75 76#define md_parse_long_option(arg) riscv_parse_long_option (arg) 77extern int riscv_parse_long_option (const char *); 78 79#define md_pre_output_hook riscv_pre_output_hook () 80extern void riscv_pre_output_hook (void); 81#define GAS_SORT_RELOCS 1 82 83/* Let the linker resolve all the relocs due to relaxation. */ 84#define tc_fix_adjustable(fixp) 0 85#define md_allow_local_subtract(l,r,s) 0 86 87/* Values passed to md_apply_fix don't include symbol values. */ 88#define MD_APPLY_SYM_VALUE(FIX) 0 89 90/* Global syms must not be resolved, to support ELF shared libraries. */ 91#define EXTERN_FORCE_RELOC \ 92 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 93 94/* Postpone text-section label subtraction calculation until linking, since 95 linker relaxations might change the deltas. */ 96#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ 97 (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \ 98 || ((SEG)->flags & SEC_CODE) != 0) 99#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1 100#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 101#define TC_FORCE_RELOCATION_LOCAL(FIX) 1 102#define DIFF_EXPR_OK 1 103 104extern void riscv_pop_insert (void); 105#define md_pop_insert() riscv_pop_insert () 106 107#define TARGET_USE_CFIPOP 1 108 109#define tc_cfi_frame_initial_instructions riscv_cfi_frame_initial_instructions 110extern void riscv_cfi_frame_initial_instructions (void); 111 112#define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum 113extern int tc_riscv_regname_to_dw2regnum (char *); 114 115#define DWARF2_DEFAULT_RETURN_COLUMN X_RA 116 117/* Even on RV64, use 4-byte alignment, as F registers may be only 32 bits. */ 118#define DWARF2_CIE_DATA_ALIGNMENT -4 119 120#define elf_tc_final_processing riscv_elf_final_processing 121extern void riscv_elf_final_processing (void); 122 123/* Adjust debug_line after relaxation. */ 124#define DWARF2_USE_FIXED_ADVANCE_PC 1 125 126#define md_end riscv_md_end 127#define CONVERT_SYMBOLIC_ATTRIBUTE riscv_convert_symbolic_attribute 128 129extern void riscv_md_end (void); 130extern int riscv_convert_symbolic_attribute (const char *); 131 132/* Set mapping symbol states. */ 133#define md_cons_align(nbytes) riscv_mapping_state (MAP_DATA, 0) 134void riscv_mapping_state (enum riscv_seg_mstate, int); 135 136/* Define target segment type. */ 137#define TC_SEGMENT_INFO_TYPE struct riscv_segment_info_type 138struct riscv_segment_info_type 139{ 140 enum riscv_seg_mstate map_state; 141}; 142 143/* Define target fragment type. */ 144#define TC_FRAG_TYPE struct riscv_frag_type 145struct riscv_frag_type 146{ 147 symbolS *first_map_symbol, *last_map_symbol; 148}; 149 150#define TC_FRAG_INIT(fragp, max_bytes) riscv_init_frag (fragp, max_bytes) 151extern void riscv_init_frag (struct frag *, int); 152 153#define obj_adjust_symtab() riscv_adjust_symtab () 154extern void riscv_adjust_symtab (void); 155 156void riscv_elf_copy_symbol_attributes (symbolS *, symbolS *); 157#define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \ 158 riscv_elf_copy_symbol_attributes (DEST, SRC) 159 160#endif /* TC_RISCV */ 161