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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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7414aa41a6
We have had a number of cases where <asm/cpufeature.h> (and its predecessors) have diverged substantially from the names list in /proc/cpuinfo. This patch generates the latter from the former. It retains the option for explicitly overriding the strings, but by making that require a separate action it should at least be less likely to happen. It would be good to do a future pass and rename strings that are gratuituously different in the kernel (/proc/cpuinfo is a userspace interface and must remain constant.) Signed-off-by: H. Peter Anvin <hpa@zytor.com>
33 lines
700 B
Perl
33 lines
700 B
Perl
#!/usr/bin/perl
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#
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# Generate the x86_cap_flags[] array from include/asm-x86/cpufeature.h
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#
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($in, $out) = @ARGV;
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open(IN, "< $in\0") or die "$0: cannot open: $in: $!\n";
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open(OUT, "> $out\0") or die "$0: cannot create: $out: $!\n";
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print OUT "#include <asm/cpufeature.h>\n\n";
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print OUT "const char * const x86_cap_flags[NCAPINTS*32] = {\n";
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while (defined($line = <IN>)) {
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if ($line =~ /^\s*\#\s*define\s+(X86_FEATURE_(\S+))\s+(.*)$/) {
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$macro = $1;
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$feature = $2;
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$tail = $3;
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if ($tail =~ /\/\*\s*\"([^"]*)\".*\*\//) {
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$feature = $1;
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}
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if ($feature ne '') {
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printf OUT "\t%-32s = \"%s\",\n",
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"[$macro]", "\L$feature";
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}
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}
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}
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print OUT "};\n";
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close(IN);
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close(OUT);
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