projects/linux·blob master · refs

73 lines · 1.8 KiB

1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeatures.h
5#
6
7set -e
8
9OUT=$1
10
11dump_array()
12{
13 ARRAY=$1
14 SIZE=$2
15 PFX=$3
16 POSTFIX=$4
17 IN=$5
18
19 PFX_SZ=$(echo $PFX | wc -c)
20 TABS="$(printf '\t\t\t\t\t')"
21
22 echo "const char * const $ARRAY[$SIZE] = {"
23
24 # Iterate through any input lines starting with #define $PFX
25 sed -n -e 's/\t/ /g' -e "s/^ *# *define *$PFX//p" $IN |
26 while read i
27 do
28 # Name is everything up to the first whitespace
29 NAME="$(echo "$i" | sed 's/ .*//')"
30
31 # If the /* comment */ starts with a quote string, grab that.
32 VALUE="$(echo "$i" | sed -n 's@.*/\* *\("[^"]*"\).*\*/@\1@p')"
33 [ ! "$VALUE" ] && continue
34
35 # Name is uppercase, VALUE is all lowercase
36 VALUE="$(echo "$VALUE" | tr A-Z a-z)"
37
38 if [ -n "$POSTFIX" ]; then
39 T=$(( $PFX_SZ + $(echo $POSTFIX | wc -c) + 2 ))
40 TABS="$(printf '\t\t\t\t\t\t')"
41 TABCOUNT=$(( ( 6*8 - ($T + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
42 printf "\t[%s - %s]%.*s = %s,\n" "$PFX$NAME" "$POSTFIX" "$TABCOUNT" "$TABS" "$VALUE"
43 else
44 TABCOUNT=$(( ( 5*8 - ($PFX_SZ + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
45 printf "\t[%s]%.*s = %s,\n" "$PFX$NAME" "$TABCOUNT" "$TABS" "$VALUE"
46 fi
47 done
48 echo "};"
49}
50
51trap 'rm "$OUT"' EXIT
52
53(
54 echo "#ifndef _ASM_X86_CPUFEATURES_H"
55 echo "#include <asm/cpufeatures.h>"
56 echo "#endif"
57 echo ""
58
59 dump_array "x86_cap_flags" "NCAPINTS*32" "X86_FEATURE_" "" $2
60 echo ""
61
62 dump_array "x86_bug_flags" "NBUGINTS*32" "X86_BUG_" "NCAPINTS*32" $2
63 echo ""
64
65 echo "#ifdef CONFIG_X86_VMX_FEATURE_NAMES"
66 echo "#ifndef _ASM_X86_VMXFEATURES_H"
67 echo "#include <asm/vmxfeatures.h>"
68 echo "#endif"
69 dump_array "x86_vmx_flags" "NVMXINTS*32" "VMX_FEATURE_" "" $3
70 echo "#endif /* CONFIG_X86_VMX_FEATURE_NAMES */"
71) > $OUT
72
73trap - EXIT