fuzz: use qemu_get_exec_dir
[qemu.git] / scripts / gensyscalls.sh
1 #!/bin/sh
2 #
3 # Update syscall_nr.h files from linux headers asm-generic/unistd.h
4 #
5 # This code is licensed under the GPL version 2 or later. See
6 # the COPYING file in the top-level directory.
7 #
8
9 linux="$1"
10 output="$2"
11
12 TMP=$(mktemp -d)
13
14 if [ "$linux" = "" ] ; then
15 echo "Needs path to linux source tree" 1>&2
16 exit 1
17 fi
18
19 if [ "$output" = "" ] ; then
20 output="$PWD"
21 fi
22
23 upper()
24 {
25 echo "$1" | tr "[:lower:]" "[:upper:]" | tr "[:punct:]" "_"
26 }
27
28 qemu_arch()
29 {
30 case "$1" in
31 arm64)
32 echo "aarch64"
33 ;;
34 *)
35 echo "$1"
36 ;;
37 esac
38 }
39
40 read_includes()
41 {
42 arch=$1
43 bits=$2
44
45 cpp -P -nostdinc -fdirectives-only \
46 -D_UAPI_ASM_$(upper ${arch})_BITSPERLONG_H \
47 -D__BITS_PER_LONG=${bits} \
48 -I${linux}/arch/${arch}/include/uapi/ \
49 -I${linux}/include/uapi \
50 -I${TMP} \
51 "${linux}/arch/${arch}/include/uapi/asm/unistd.h"
52 }
53
54 filter_defines()
55 {
56 grep -e "#define __NR_" -e "#define __NR3264"
57 }
58
59 rename_defines()
60 {
61 sed "s/ __NR_/ TARGET_NR_/g;s/(__NR_/(TARGET_NR_/g"
62 }
63
64 evaluate_values()
65 {
66 sed "s/#define TARGET_NR_/QEMU TARGET_NR_/" | \
67 cpp -P -nostdinc | \
68 sed "s/^QEMU /#define /"
69 }
70
71 generate_syscall_nr()
72 {
73 arch=$1
74 bits=$2
75 file="$3"
76 guard="$(upper LINUX_USER_$(qemu_arch $arch)_$(basename "$file"))"
77
78 (echo "/*"
79 echo " * This file contains the system call numbers."
80 echo " * Do not modify."
81 echo " * This file is generated by scripts/gensyscalls.sh"
82 echo " */"
83 echo "#ifndef ${guard}"
84 echo "#define ${guard}"
85 echo
86 read_includes $arch $bits | filter_defines | rename_defines | \
87 evaluate_values | sort -n -k 3
88 echo
89 echo "#endif /* ${guard} */"
90 echo) > "$file"
91 }
92
93 mkdir "$TMP/asm"
94 > "$TMP/asm/bitsperlong.h"
95
96 generate_syscall_nr arm64 64 "$output/linux-user/aarch64/syscall_nr.h"
97 generate_syscall_nr nios2 32 "$output/linux-user/nios2/syscall_nr.h"
98 generate_syscall_nr openrisc 32 "$output/linux-user/openrisc/syscall_nr.h"
99
100 generate_syscall_nr riscv 32 "$output/linux-user/riscv/syscall32_nr.h"
101 generate_syscall_nr riscv 64 "$output/linux-user/riscv/syscall64_nr.h"
102 rm -fr "$TMP"