From: Alexander Kapshuk alexander.kapshuk@gmail.com
commit 700c1018b86d0d4b3f1f2d459708c0cdf42b521d upstream.
gawk 5.0.1 generates the following regexp warnings:
GEN /home/sasha/torvalds/tools/objtool/arch/x86/lib/inat-tables.c awk: ../arch/x86/tools/gen-insn-attr-x86.awk:260: warning: regexp escape sequence `:' is not a known regexp operator awk: ../arch/x86/tools/gen-insn-attr-x86.awk:350: (FILENAME=../arch/x86/lib/x86-opcode-map.txt FNR=41) warning: regexp escape sequence `&' is not a known regexp operator
Ealier versions of gawk are not known to generate these warnings. The gawk manual referenced below does not list characters ':' and '&' as needing escaping, so 'unescape' them. See
https://www.gnu.org/software/gawk/manual/html_node/Escape-Sequences.html
for more info.
Running diff on the output generated by the script before and after applying the patch reported no differences.
[ bp: Massage commit message. ]
[ Caught the respective tools header discrepancy. ] Reported-by: kbuild test robot lkp@intel.com Signed-off-by: Alexander Kapshuk alexander.kapshuk@gmail.com Signed-off-by: Borislav Petkov bp@suse.de Acked-by: Masami Hiramatsu mhiramat@kernel.org Cc: "H. Peter Anvin" hpa@zytor.com Cc: "Peter Zijlstra (Intel)" peterz@infradead.org Cc: Arnaldo Carvalho de Melo acme@redhat.com Cc: Ingo Molnar mingo@redhat.com Cc: Josh Poimboeuf jpoimboe@redhat.com Cc: Thomas Gleixner tglx@linutronix.de Cc: x86-ml x86@kernel.org Link: https://lkml.kernel.org/r/20190924044659.3785-1-alexander.kapshuk@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/tools/gen-insn-attr-x86.awk | 4 ++-- tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
--- a/arch/x86/tools/gen-insn-attr-x86.awk +++ b/arch/x86/tools/gen-insn-attr-x86.awk @@ -69,7 +69,7 @@ BEGIN {
lprefix1_expr = "\((66|!F3)\)" lprefix2_expr = "\(F3\)" - lprefix3_expr = "\((F2|!F3|66\&F2)\)" + lprefix3_expr = "\((F2|!F3|66&F2)\)" lprefix_expr = "\((66|F2|F3)\)" max_lprefix = 4
@@ -257,7 +257,7 @@ function convert_operands(count,opnd, return add_flags(imm, mod) }
-/^[0-9a-f]+:/ { +/^[0-9a-f]+:/ { if (NR == 1) next # get index --- a/tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk +++ b/tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk @@ -69,7 +69,7 @@ BEGIN {
lprefix1_expr = "\((66|!F3)\)" lprefix2_expr = "\(F3\)" - lprefix3_expr = "\((F2|!F3|66\&F2)\)" + lprefix3_expr = "\((F2|!F3|66&F2)\)" lprefix_expr = "\((66|F2|F3)\)" max_lprefix = 4
@@ -257,7 +257,7 @@ function convert_operands(count,opnd, return add_flags(imm, mod) }
-/^[0-9a-f]+:/ { +/^[0-9a-f]+:/ { if (NR == 1) next # get index