1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/* tc-aarch64.h -- Header file for tc-aarch64.c.
Copyright (C) 2009-2017 Free Software Foundation, Inc.
Contributed by ARM Ltd.
This file is part of GAS.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the license, or
(at your option) any later version.
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING3. If not,
see <http://www.gnu.org/licenses/>. */
#ifndef TC_AARCH64
#define TC_AARCH64 1
#include "opcode/aarch64.h"
#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 0
#endif
#define WORKING_DOT_WORD
#define TARGET_ARCH bfd_arch_aarch64
#define DIFF_EXPR_OK
/* Permit // comments. */
#define DOUBLESLASH_LINE_COMMENTS
#ifdef LITTLE_ENDIAN
#undef LITTLE_ENDIAN
#endif
#ifdef BIG_ENDIAN
#undef BIG_ENDIAN
#endif
#define LITTLE_ENDIAN 1234
#define BIG_ENDIAN 4321
#define SWAP_32(n) \
((((n) & 0xff) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) \
| (((n) >> 24) & 0xff))
struct fix;
struct aarch64_fix
{
struct aarch64_inst *inst;
enum aarch64_opnd opnd;
};
#if defined OBJ_ELF
# define AARCH64_BI_ENDIAN
# define TARGET_FORMAT elf64_aarch64_target_format ()
#endif
#define TC_FORCE_RELOCATION(FIX) aarch64_force_relocation (FIX)
/* Currently there is no machine specific frags generated. */
#define md_convert_frag(b,s,f) as_fatal ("aarch64 convert_frag called\n")
#define md_cleanup() aarch64_cleanup ()
#define md_start_line_hook() aarch64_start_line_hook ()
#define tc_frob_label(S) aarch64_frob_label (S)
/* We also need to mark assembler created symbols: */
#define tc_frob_fake_label(S) aarch64_frob_label (S)
#define TC_FIX_TYPE struct aarch64_fix
#define TC_INIT_FIX_DATA(FIX) { (FIX)->tc_fix_data.inst = NULL; \
(FIX)->tc_fix_data.opnd = AARCH64_OPND_NIL; }
#define TC_SYMFIELD_TYPE unsigned int
#define AARCH64_GET_FLAG(s) (*symbol_get_tc (s))
void aarch64_copy_symbol_attributes (symbolS *, symbolS *);
#ifndef TC_COPY_SYMBOL_ATTRIBUTES
#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
(aarch64_copy_symbol_attributes (DEST, SRC))
#endif
#define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) \
(NEXT_CHAR == ':' || (NEXT_CHAR == '/' && aarch64_data_in_code ()))
#define tc_canonicalize_symbol_name(str) aarch64_canonicalize_symbol_name (str);
#define obj_adjust_symtab() aarch64_adjust_symtab ()
#define LISTING_HEADER "AARCH64 GAS "
#define LOCAL_LABEL(name) (name[0] == '.' && name[1] == 'L')
#define LOCAL_LABELS_FB 1
/* This expression evaluates to true if the relocation is for a local
object for which we still want to do the relocation at runtime.
False if we are willing to perform this relocation while building
the .o file. GOTOFF does not need to be checked here because it is
not pcrel. I am not sure if some of the others are ever used with
pcrel, but it is easier to be safe than sorry. */
#define TC_FORCE_RELOCATION_LOCAL(FIX) \
(GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
|| (FIX)->fx_r_type == BFD_RELOC_64 \
|| (FIX)->fx_r_type == BFD_RELOC_32)
#define TC_CONS_FIX_NEW(f,w,s,e,r) cons_fix_new_aarch64 ((f), (w), (s), (e))
/* Max space for a rs_align_code fragment is 3 unaligned bytes
(fr_fix) plus 4 bytes to contain the repeating NOP (fr_var). */
#define MAX_MEM_FOR_RS_ALIGN_CODE 7
/* For frags in code sections we need to record whether they contain
code or data. */
struct aarch64_frag_type
{
int recorded;
#ifdef OBJ_ELF
/* If there is a mapping symbol at offset 0 in this frag,
it will be saved in FIRST_MAP. If there are any mapping
symbols in this frag, the last one will be saved in
LAST_MAP. */
symbolS *first_map, *last_map;
#endif
};
#define TC_FRAG_TYPE struct aarch64_frag_type
/* NOTE: max_chars is a local variable from frag_var / frag_variant. */
#define TC_FRAG_INIT(fragp) aarch64_init_frag (fragp, max_chars)
#define HANDLE_ALIGN(fragp) aarch64_handle_align (fragp)
#define md_do_align(N, FILL, LEN, MAX, LABEL) \
if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
{ \
frag_align_code (N, MAX); \
goto LABEL; \
}
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
#define DWARF2_LINE_MIN_INSN_LENGTH 4
/* The lr register is r30. */
#define DWARF2_DEFAULT_RETURN_COLUMN 30
/* Registers are generally saved at negative offsets to the CFA. */
#define DWARF2_CIE_DATA_ALIGNMENT (-8)
extern int aarch64_dwarf2_addr_size (void);
#define DWARF2_ADDR_SIZE(bfd) aarch64_dwarf2_addr_size ()
#ifdef OBJ_ELF
# define obj_frob_symbol(sym, punt) aarch64elf_frob_symbol ((sym), & (punt))
# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
# define TC_SEGMENT_INFO_TYPE struct aarch64_segment_info_type
/* This is not really an alignment operation, but it's something we
need to do at the same time: whenever we are figuring out the
alignment for data, we should check whether a $d symbol is
necessary. */
# define md_cons_align(nbytes) mapping_state (MAP_DATA)
enum mstate
{
MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
MAP_DATA,
MAP_INSN,
};
void mapping_state (enum mstate);
struct aarch64_segment_info_type
{
enum mstate mapstate;
unsigned int marked_pr_dependency;
};
/* We want .cfi_* pseudo-ops for generating unwind info. */
#define TARGET_USE_CFIPOP 1
/* CFI hooks. */
#define tc_regname_to_dw2regnum tc_aarch64_regname_to_dw2regnum
#define tc_cfi_frame_initial_instructions tc_aarch64_frame_initial_instructions
extern void aarch64_after_parse_args (void);
#define md_after_parse_args() aarch64_after_parse_args ()
#else /* Not OBJ_ELF. */
#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
#endif
#if defined OBJ_ELF || defined OBJ_COFF
# define EXTERN_FORCE_RELOC 1
# define tc_fix_adjustable(FIX) 1
/* Values passed to md_apply_fix don't include the symbol value. */
# define MD_APPLY_SYM_VALUE(FIX) 0
#endif
#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
extern long md_pcrel_from_section (struct fix *, segT);
extern void aarch64_frag_align_code (int, int);
extern const char * elf64_aarch64_target_format (void);
extern int aarch64_force_relocation (struct fix *);
extern void aarch64_cleanup (void);
extern void aarch64_start_line_hook (void);
extern void aarch64_frob_label (symbolS *);
extern int aarch64_data_in_code (void);
extern char * aarch64_canonicalize_symbol_name (char *);
extern void aarch64_adjust_symtab (void);
extern void aarch64elf_frob_symbol (symbolS *, int *);
extern void cons_fix_new_aarch64 (fragS *, int, int, expressionS *);
extern void aarch64_init_frag (struct frag *, int);
extern void aarch64_handle_align (struct frag *);
extern int tc_aarch64_regname_to_dw2regnum (char *regname);
extern void tc_aarch64_frame_initial_instructions (void);
#ifdef TE_PE
#define O_secrel O_md1
#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
#endif /* TE_PE */
#endif /* TC_AARCH64 */
|
