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
240
241
242
243
244
245
|
/* Target-specific code for C family languages.
Copyright (C) 2015-2018 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#define IN_TARGET_CODE 1
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "input.h"
#include "memmodel.h"
#include "tm_p.h"
#include "flags.h"
#include "c-family/c-common.h"
#include "cpplib.h"
#include "c-family/c-pragma.h"
#include "langhooks.h"
#include "target.h"
#define builtin_define(TXT) cpp_define (pfile, TXT)
#define builtin_assert(TXT) cpp_assert (pfile, TXT)
static void
aarch64_def_or_undef (bool def_p, const char *macro, cpp_reader *pfile)
{
if (def_p)
cpp_define (pfile, macro);
else
cpp_undef (pfile, macro);
}
/* Define the macros that we always expect to have on AArch64. */
static void
aarch64_define_unconditional_macros (cpp_reader *pfile)
{
builtin_define ("__aarch64__");
builtin_define ("__ARM_64BIT_STATE");
builtin_define ("__ARM_ARCH_ISA_A64");
builtin_define_with_int_value ("__ARM_ALIGN_MAX_PWR", 28);
builtin_define_with_int_value ("__ARM_ALIGN_MAX_STACK_PWR", 16);
/* __ARM_ARCH_8A is not mandated by ACLE but we define it unconditionally
as interoperability with the same arm macro. */
builtin_define ("__ARM_ARCH_8A");
builtin_define_with_int_value ("__ARM_ARCH_PROFILE", 'A');
builtin_define ("__ARM_FEATURE_CLZ");
builtin_define ("__ARM_FEATURE_IDIV");
builtin_define ("__ARM_FEATURE_UNALIGNED");
builtin_define ("__ARM_PCS_AAPCS64");
builtin_define_with_int_value ("__ARM_SIZEOF_WCHAR_T", WCHAR_TYPE_SIZE / 8);
}
/* Undefine/redefine macros that depend on the current backend state and may
need to change when a target pragma modifies the backend state. */
static void
aarch64_update_cpp_builtins (cpp_reader *pfile)
{
aarch64_def_or_undef (flag_unsafe_math_optimizations, "__ARM_FP_FAST", pfile);
builtin_define_with_int_value ("__ARM_ARCH", aarch64_architecture_version);
builtin_define_with_int_value ("__ARM_SIZEOF_MINIMAL_ENUM",
flag_short_enums ? 1 : 4);
aarch64_def_or_undef (TARGET_BIG_END, "__AARCH64EB__", pfile);
aarch64_def_or_undef (TARGET_BIG_END, "__ARM_BIG_ENDIAN", pfile);
aarch64_def_or_undef (!TARGET_BIG_END, "__AARCH64EL__", pfile);
aarch64_def_or_undef (TARGET_FLOAT, "__ARM_FEATURE_FMA", pfile);
if (TARGET_FLOAT || TARGET_SIMD)
{
builtin_define_with_int_value ("__ARM_FP", 0x0E);
builtin_define ("__ARM_FP16_FORMAT_IEEE");
builtin_define ("__ARM_FP16_ARGS");
}
else
cpp_undef (pfile, "__ARM_FP");
aarch64_def_or_undef (TARGET_FP_F16INST,
"__ARM_FEATURE_FP16_SCALAR_ARITHMETIC", pfile);
aarch64_def_or_undef (TARGET_SIMD_F16INST,
"__ARM_FEATURE_FP16_VECTOR_ARITHMETIC", pfile);
aarch64_def_or_undef (TARGET_SIMD, "__ARM_FEATURE_NUMERIC_MAXMIN", pfile);
aarch64_def_or_undef (TARGET_SIMD, "__ARM_NEON", pfile);
aarch64_def_or_undef (TARGET_CRC32, "__ARM_FEATURE_CRC32", pfile);
aarch64_def_or_undef (TARGET_DOTPROD, "__ARM_FEATURE_DOTPROD", pfile);
cpp_undef (pfile, "__AARCH64_CMODEL_TINY__");
cpp_undef (pfile, "__AARCH64_CMODEL_SMALL__");
cpp_undef (pfile, "__AARCH64_CMODEL_LARGE__");
switch (aarch64_cmodel)
{
case AARCH64_CMODEL_TINY:
case AARCH64_CMODEL_TINY_PIC:
builtin_define ("__AARCH64_CMODEL_TINY__");
break;
case AARCH64_CMODEL_SMALL:
case AARCH64_CMODEL_SMALL_PIC:
builtin_define ("__AARCH64_CMODEL_SMALL__");
break;
case AARCH64_CMODEL_LARGE:
builtin_define ("__AARCH64_CMODEL_LARGE__");
break;
default:
break;
}
aarch64_def_or_undef (TARGET_ILP32, "_ILP32", pfile);
aarch64_def_or_undef (TARGET_ILP32, "__ILP32__", pfile);
aarch64_def_or_undef (TARGET_CRYPTO, "__ARM_FEATURE_CRYPTO", pfile);
aarch64_def_or_undef (TARGET_SIMD_RDMA, "__ARM_FEATURE_QRDMX", pfile);
aarch64_def_or_undef (TARGET_SVE, "__ARM_FEATURE_SVE", pfile);
cpp_undef (pfile, "__ARM_FEATURE_SVE_BITS");
if (TARGET_SVE)
{
int bits;
if (!BITS_PER_SVE_VECTOR.is_constant (&bits))
bits = 0;
builtin_define_with_int_value ("__ARM_FEATURE_SVE_BITS", bits);
}
aarch64_def_or_undef (TARGET_AES, "__ARM_FEATURE_AES", pfile);
aarch64_def_or_undef (TARGET_SHA2, "__ARM_FEATURE_SHA2", pfile);
aarch64_def_or_undef (TARGET_SHA3, "__ARM_FEATURE_SHA3", pfile);
aarch64_def_or_undef (TARGET_SHA3, "__ARM_FEATURE_SHA512", pfile);
aarch64_def_or_undef (TARGET_SM4, "__ARM_FEATURE_SM3", pfile);
aarch64_def_or_undef (TARGET_SM4, "__ARM_FEATURE_SM4", pfile);
aarch64_def_or_undef (TARGET_F16FML, "__ARM_FEATURE_FP16_FML", pfile);
/* Not for ACLE, but required to keep "float.h" correct if we switch
target between implementations that do or do not support ARMv8.2-A
16-bit floating-point extensions. */
cpp_undef (pfile, "__FLT_EVAL_METHOD__");
builtin_define_with_int_value ("__FLT_EVAL_METHOD__",
c_flt_eval_method (true));
cpp_undef (pfile, "__FLT_EVAL_METHOD_C99__");
builtin_define_with_int_value ("__FLT_EVAL_METHOD_C99__",
c_flt_eval_method (false));
}
/* Implement TARGET_CPU_CPP_BUILTINS. */
void
aarch64_cpu_cpp_builtins (cpp_reader *pfile)
{
aarch64_define_unconditional_macros (pfile);
aarch64_update_cpp_builtins (pfile);
}
/* Hook to validate the current #pragma GCC target and set the state, and
update the macros based on what was changed. If ARGS is NULL, then
POP_TARGET is used to reset the options. */
static bool
aarch64_pragma_target_parse (tree args, tree pop_target)
{
/* If args is not NULL then process it and setup the target-specific
information that it specifies. */
if (args)
{
if (!aarch64_process_target_attr (args))
return false;
aarch64_override_options_internal (&global_options);
}
/* args is NULL, restore to the state described in pop_target. */
else
{
pop_target = pop_target ? pop_target : target_option_default_node;
cl_target_option_restore (&global_options,
TREE_TARGET_OPTION (pop_target));
}
target_option_current_node
= build_target_option_node (&global_options);
aarch64_reset_previous_fndecl ();
/* For the definitions, ensure all newly defined macros are considered
as used for -Wunused-macros. There is no point warning about the
compiler predefined macros. */
cpp_options *cpp_opts = cpp_get_options (parse_in);
unsigned char saved_warn_unused_macros = cpp_opts->warn_unused_macros;
cpp_opts->warn_unused_macros = 0;
aarch64_update_cpp_builtins (parse_in);
cpp_opts->warn_unused_macros = saved_warn_unused_macros;
/* If we're popping or reseting make sure to update the globals so that
the optab availability predicates get recomputed. */
if (pop_target)
aarch64_save_restore_target_globals (pop_target);
/* Initialize SIMD builtins if we haven't already.
Set current_target_pragma to NULL for the duration so that
the builtin initialization code doesn't try to tag the functions
being built with the attributes specified by any current pragma, thus
going into an infinite recursion. */
if (TARGET_SIMD)
{
tree saved_current_target_pragma = current_target_pragma;
current_target_pragma = NULL;
aarch64_init_simd_builtins ();
current_target_pragma = saved_current_target_pragma;
}
return true;
}
/* Implement REGISTER_TARGET_PRAGMAS. */
void
aarch64_register_pragmas (void)
{
/* Update pragma hook to allow parsing #pragma GCC target. */
targetm.target_option.pragma_parse = aarch64_pragma_target_parse;
}
|
