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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 23:46:48 +07:00
80a208bd39
Dump the flags which denote we have detected and/or have applied bug workarounds to the CPU we're executing on, in a similar manner to the feature flags. The advantage is that those are not accumulating over time like the CPU features. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1403609105-8332-2-git-send-email-bp@alien8.de Signed-off-by: H. Peter Anvin <hpa@zytor.com>
65 lines
1.5 KiB
Bash
65 lines
1.5 KiB
Bash
#!/bin/sh
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#
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# Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeature.h
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#
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IN=$1
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OUT=$2
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function dump_array()
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{
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ARRAY=$1
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SIZE=$2
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PFX=$3
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POSTFIX=$4
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PFX_SZ=$(echo $PFX | wc -c)
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TABS="$(printf '\t\t\t\t\t')"
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echo "const char * const $ARRAY[$SIZE] = {"
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# Iterate through any input lines starting with #define $PFX
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sed -n -e 's/\t/ /g' -e "s/^ *# *define *$PFX//p" $IN |
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while read i
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do
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# Name is everything up to the first whitespace
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NAME="$(echo "$i" | sed 's/ .*//')"
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# If the /* comment */ starts with a quote string, grab that.
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VALUE="$(echo "$i" | sed -n 's@.*/\* *\("[^"]*"\).*\*/@\1@p')"
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[ -z "$VALUE" ] && VALUE="\"$NAME\""
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[ "$VALUE" == '""' ] && continue
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# Name is uppercase, VALUE is all lowercase
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VALUE="$(echo "$VALUE" | tr A-Z a-z)"
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if [ -n "$POSTFIX" ]; then
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T=$(( $PFX_SZ + $(echo $POSTFIX | wc -c) + 2 ))
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TABS="$(printf '\t\t\t\t\t\t')"
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TABCOUNT=$(( ( 6*8 - ($T + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
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printf "\t[%s - %s]%.*s = %s,\n" "$PFX$NAME" "$POSTFIX" "$TABCOUNT" "$TABS" "$VALUE"
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else
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TABCOUNT=$(( ( 5*8 - ($PFX_SZ + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
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printf "\t[%s]%.*s = %s,\n" "$PFX$NAME" "$TABCOUNT" "$TABS" "$VALUE"
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fi
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done
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echo "};"
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}
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trap 'rm "$OUT"' EXIT
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(
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echo "#ifndef _ASM_X86_CPUFEATURE_H"
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echo "#include <asm/cpufeature.h>"
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echo "#endif"
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echo ""
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dump_array "x86_cap_flags" "NCAPINTS*32" "X86_FEATURE_" ""
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echo ""
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dump_array "x86_bug_flags" "NBUGINTS*32" "X86_BUG_" "NCAPINTS*32"
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) > $OUT
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trap - EXIT
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