1 /* tc-riscv.h -- header file for tc-riscv.c.
2 Copyright (C) 2011-2023 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 #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
104 extern 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
110 extern void riscv_cfi_frame_initial_instructions (void);
111
112 #define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum
113 extern 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
121 extern 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_parse_name(name, exp, mode, c) \
127 riscv_parse_name (name, exp, mode)
128 bool riscv_parse_name (const char *, struct expressionS *, enum expr_mode);
129
130 #define md_finish riscv_md_finish
131 #define CONVERT_SYMBOLIC_ATTRIBUTE riscv_convert_symbolic_attribute
132
133 extern void riscv_md_finish (void);
134 extern int riscv_convert_symbolic_attribute (const char *);
135
136 /* Set mapping symbol states. */
137 #define md_cons_align(nbytes) riscv_mapping_state (MAP_DATA, 0, 0)
138 void riscv_mapping_state (enum riscv_seg_mstate, int, bool);
139
140 /* Define target segment type. */
141 #define TC_SEGMENT_INFO_TYPE struct riscv_segment_info_type
142 struct riscv_segment_info_type
143 {
144 enum riscv_seg_mstate map_state;
145 /* The current mapping symbol with architecture string. */
146 symbolS *arch_map_symbol;
147 };
148
149 /* Define target fragment type. */
150 #define TC_FRAG_TYPE struct riscv_frag_type
151 struct riscv_frag_type
152 {
153 symbolS *first_map_symbol, *last_map_symbol;
154 };
155
156 #define TC_FRAG_INIT(fragp, max_bytes) riscv_init_frag (fragp, max_bytes)
157 extern void riscv_init_frag (struct frag *, int);
158
159 #define obj_adjust_symtab() riscv_adjust_symtab ()
160 extern void riscv_adjust_symtab (void);
161
162 void riscv_elf_copy_symbol_attributes (symbolS *, symbolS *);
163 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
164 riscv_elf_copy_symbol_attributes (DEST, SRC)
165
166 #endif /* TC_RISCV */