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x86/insn: Fix awk regexp warnings

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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
This commit is contained in:
Alexander Kapshuk 2019-09-24 07:46:59 +03:00 committed by Borislav Petkov
parent 54ecb8f702
commit 700c1018b8
2 changed files with 4 additions and 4 deletions
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4
arch/x86/tools/gen-insn-attr-x86.awk
View File

@ -69,7 +69,7 @@ BEGIN {
lprefix1_expr = "\\((66|!F3)\\)" lprefix1_expr = "\\((66|!F3)\\)"
lprefix2_expr = "\\(F3\\)" lprefix2_expr = "\\(F3\\)"
lprefix3_expr = "\\((F2|!F3|66\\&F2)\\)" lprefix3_expr = "\\((F2|!F3|66&F2)\\)"
lprefix_expr = "\\((66|F2|F3)\\)" lprefix_expr = "\\((66|F2|F3)\\)"
max_lprefix = 4 max_lprefix = 4
@ -257,7 +257,7 @@ function convert_operands(count,opnd, i,j,imm,mod)
return add_flags(imm, mod) return add_flags(imm, mod)
} }
/^[0-9a-f]+\:/ { /^[0-9a-f]+:/ {
if (NR == 1) if (NR == 1)
next next
# get index # get index

4
tools/arch/x86/tools/gen-insn-attr-x86.awk
View File

@ -69,7 +69,7 @@ BEGIN {
lprefix1_expr = "\\((66|!F3)\\)" lprefix1_expr = "\\((66|!F3)\\)"
lprefix2_expr = "\\(F3\\)" lprefix2_expr = "\\(F3\\)"
lprefix3_expr = "\\((F2|!F3|66\\&F2)\\)" lprefix3_expr = "\\((F2|!F3|66&F2)\\)"
lprefix_expr = "\\((66|F2|F3)\\)" lprefix_expr = "\\((66|F2|F3)\\)"
max_lprefix = 4 max_lprefix = 4
@ -257,7 +257,7 @@ function convert_operands(count,opnd, i,j,imm,mod)
return add_flags(imm, mod) return add_flags(imm, mod)
} }
/^[0-9a-f]+\:/ { /^[0-9a-f]+:/ {
if (NR == 1) if (NR == 1)
next next
# get index # get index