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
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Generate all syscall tables.
#
# Each line of the syscall table should have the following format:
#
# NR ABI NAME [NATIVE] [COMPAT [noreturn]]
#
# NR syscall number
# ABI ABI name
# NAME syscall name
# NATIVE native entry point (optional)
# COMPAT compat entry point (optional)
# noreturn system call doesn't return (optional)
set -e
usage() {
cat >&2 <<EOF
usage: $0 <TOOLS DIRECTORY> <OUTFILE>
<TOOLS DIRECTORY> path to kernel tools directory
<OUTFILE> output header file
EOF
exit 1
}
if [ $# -ne 2 ]; then
usage
fi
tools_dir=$1
outfile=$2
build_tables() {
infile="$1"
outfile="$2"
abis=$(echo "($3)" | tr ',' '|')
e_machine="$4"
if [ ! -f "$infile" ]
then
echo "Missing file $infile"
exit 1
fi
sorted_table=$(mktemp /tmp/syscalltbl.XXXXXX)
grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n > "$sorted_table"
echo "static const char *const syscall_num_to_name_${e_machine}[] = {" >> "$outfile"
# the params are: nr abi name entry compat
# use _ for intentionally unused variables according to SC2034
while read -r nr _ name _ _; do
echo " [$nr] = \"$name\"," >> "$outfile"
done < "$sorted_table"
echo "};" >> "$outfile"
echo "static const uint16_t syscall_sorted_names_${e_machine}[] = {" >> "$outfile"
# When sorting by name, add a suffix of 0s upto 20 characters so that
# system calls that differ with a numerical suffix don't sort before
# those without. This default behavior of sort differs from that of
# strcmp used at runtime. Use sed to strip the trailing 0s suffix
# afterwards.
grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | awk '{printf $3; for (i = length($3); i < 20; i++) { printf "0"; }; print " " $1}'| sort | sed 's/\([a-zA-Z1-9]\+\)0\+ \([0-9]\+\)/\1 \2/' > "$sorted_table"
while read -r name nr; do
echo " $nr, /* $name */" >> "$outfile"
done < "$sorted_table"
echo "};" >> "$outfile"
rm -f "$sorted_table"
}
rm -f "$outfile"
cat >> "$outfile" <<EOF
#include <elf.h>
#include <stdint.h>
#include <asm/bitsperlong.h>
#include <linux/kernel.h>
struct syscalltbl {
const char *const *num_to_name;
const uint16_t *sorted_names;
uint16_t e_machine;
uint16_t num_to_name_len;
uint16_t sorted_names_len;
};
#if defined(ALL_SYSCALLTBL) || defined(__alpha__)
EOF
build_tables "$tools_dir/perf/arch/alpha/entry/syscalls/syscall.tbl" "$outfile" common,64 EM_ALPHA
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__alpha__)
#if defined(ALL_SYSCALLTBL) || defined(__arm__) || defined(__aarch64__)
EOF
build_tables "$tools_dir/perf/arch/arm/entry/syscalls/syscall.tbl" "$outfile" common,32,oabi EM_ARM
build_tables "$tools_dir/perf/arch/arm64/entry/syscalls/syscall_64.tbl" "$outfile" common,64,renameat,rlimit,memfd_secret EM_AARCH64
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__arm__) || defined(__aarch64__)
#if defined(ALL_SYSCALLTBL) || defined(__csky__)
EOF
build_tables "$tools_dir/scripts/syscall.tbl" "$outfile" common,32,csky,time32,stat64,rlimit EM_CSKY
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__csky__)
#if defined(ALL_SYSCALLTBL) || defined(__mips__)
EOF
build_tables "$tools_dir/perf/arch/mips/entry/syscalls/syscall_n64.tbl" "$outfile" common,64,n64 EM_MIPS
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__mips__)
#if defined(ALL_SYSCALLTBL) || defined(__hppa__)
#if __BITS_PER_LONG != 64
EOF
build_tables "$tools_dir/perf/arch/parisc/entry/syscalls/syscall.tbl" "$outfile" common,32 EM_PARISC
echo "#else" >> "$outfile"
build_tables "$tools_dir/perf/arch/parisc/entry/syscalls/syscall.tbl" "$outfile" common,64 EM_PARISC
cat >> "$outfile" <<EOF
#endif //__BITS_PER_LONG != 64
#endif // defined(ALL_SYSCALLTBL) || defined(__hppa__)
#if defined(ALL_SYSCALLTBL) || defined(__powerpc__) || defined(__powerpc64__)
EOF
build_tables "$tools_dir/perf/arch/powerpc/entry/syscalls/syscall.tbl" "$outfile" common,32,nospu EM_PPC
build_tables "$tools_dir/perf/arch/powerpc/entry/syscalls/syscall.tbl" "$outfile" common,64,nospu EM_PPC64
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__powerpc__) || defined(__powerpc64__)
#if defined(ALL_SYSCALLTBL) || defined(__riscv)
#if __BITS_PER_LONG != 64
EOF
build_tables "$tools_dir/scripts/syscall.tbl" "$outfile" common,32,riscv,memfd_secret EM_RISCV
echo "#else" >> "$outfile"
build_tables "$tools_dir/scripts/syscall.tbl" "$outfile" common,64,riscv,rlimit,memfd_secret EM_RISCV
cat >> "$outfile" <<EOF
#endif //__BITS_PER_LONG != 64
#endif // defined(ALL_SYSCALLTBL) || defined(__riscv)
#if defined(ALL_SYSCALLTBL) || defined(__s390x__)
EOF
build_tables "$tools_dir/perf/arch/s390/entry/syscalls/syscall.tbl" "$outfile" common,64,renameat,rlimit,memfd_secret EM_S390
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__s390x__)
#if defined(ALL_SYSCALLTBL) || defined(__sh__)
EOF
build_tables "$tools_dir/perf/arch/sh/entry/syscalls/syscall.tbl" "$outfile" common,32 EM_SH
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__sh__)
#if defined(ALL_SYSCALLTBL) || defined(__sparc64__) || defined(__sparc__)
#if __BITS_PER_LONG != 64
EOF
build_tables "$tools_dir/perf/arch/sparc/entry/syscalls/syscall.tbl" "$outfile" common,32 EM_SPARC
echo "#else" >> "$outfile"
build_tables "$tools_dir/perf/arch/sparc/entry/syscalls/syscall.tbl" "$outfile" common,64 EM_SPARC
cat >> "$outfile" <<EOF
#endif //__BITS_PER_LONG != 64
#endif // defined(ALL_SYSCALLTBL) || defined(__sparc64__) || defined(__sparc__)
#if defined(ALL_SYSCALLTBL) || defined(__i386__) || defined(__x86_64__)
EOF
build_tables "$tools_dir/perf/arch/x86/entry/syscalls/syscall_32.tbl" "$outfile" common,32,i386 EM_386
build_tables "$tools_dir/perf/arch/x86/entry/syscalls/syscall_64.tbl" "$outfile" common,64 EM_X86_64
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__i386__) || defined(__x86_64__)
#if defined(ALL_SYSCALLTBL) || defined(__xtensa__)
EOF
build_tables "$tools_dir/perf/arch/xtensa/entry/syscalls/syscall.tbl" "$outfile" common,32 EM_XTENSA
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__xtensa__)
#if __BITS_PER_LONG != 64
EOF
build_tables "$tools_dir/scripts/syscall.tbl" "$outfile" common,32 EM_NONE
echo "#else" >> "$outfile"
build_tables "$tools_dir/scripts/syscall.tbl" "$outfile" common,64 EM_NONE
echo "#endif //__BITS_PER_LONG != 64" >> "$outfile"
build_outer_table() {
e_machine=$1
outfile="$2"
cat >> "$outfile" <<EOF
{
.num_to_name = syscall_num_to_name_$e_machine,
.sorted_names = syscall_sorted_names_$e_machine,
.e_machine = $e_machine,
.num_to_name_len = ARRAY_SIZE(syscall_num_to_name_$e_machine),
.sorted_names_len = ARRAY_SIZE(syscall_sorted_names_$e_machine),
},
EOF
}
cat >> "$outfile" <<EOF
static const struct syscalltbl syscalltbls[] = {
#if defined(ALL_SYSCALLTBL) || defined(__alpha__)
EOF
build_outer_table EM_ALPHA "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__alpha__)
#if defined(ALL_SYSCALLTBL) || defined(__arm__) || defined(__aarch64__)
EOF
build_outer_table EM_ARM "$outfile"
build_outer_table EM_AARCH64 "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__arm__) || defined(__aarch64__)
#if defined(ALL_SYSCALLTBL) || defined(__csky__)
EOF
build_outer_table EM_CSKY "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__csky__)
#if defined(ALL_SYSCALLTBL) || defined(__mips__)
EOF
build_outer_table EM_MIPS "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__mips__)
#if defined(ALL_SYSCALLTBL) || defined(__hppa__)
EOF
build_outer_table EM_PARISC "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__hppa__)
#if defined(ALL_SYSCALLTBL) || defined(__powerpc__) || defined(__powerpc64__)
EOF
build_outer_table EM_PPC "$outfile"
build_outer_table EM_PPC64 "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__powerpc__) || defined(__powerpc64__)
#if defined(ALL_SYSCALLTBL) || defined(__riscv)
EOF
build_outer_table EM_RISCV "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__riscv)
#if defined(ALL_SYSCALLTBL) || defined(__s390x__)
EOF
build_outer_table EM_S390 "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__s390x__)
#if defined(ALL_SYSCALLTBL) || defined(__sh__)
EOF
build_outer_table EM_SH "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__sh__)
#if defined(ALL_SYSCALLTBL) || defined(__sparc64__) || defined(__sparc__)
EOF
build_outer_table EM_SPARC "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__sparc64__) || defined(__sparc__)
#if defined(ALL_SYSCALLTBL) || defined(__i386__) || defined(__x86_64__)
EOF
build_outer_table EM_386 "$outfile"
build_outer_table EM_X86_64 "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__i386__) || defined(__x86_64__)
#if defined(ALL_SYSCALLTBL) || defined(__xtensa__)
EOF
build_outer_table EM_XTENSA "$outfile"
cat >> "$outfile" <<EOF
#endif // defined(ALL_SYSCALLTBL) || defined(__xtensa__)
EOF
build_outer_table EM_NONE "$outfile"
cat >> "$outfile" <<EOF
};
EOF
|
