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