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* [PATCH] gen-insn-attr-x86.awk: Fix regexp warnings
@ 2019-09-21 11:37 Alexander Kapshuk
  2019-09-22  8:33 ` kbuild test robot
  0 siblings, 1 reply; 13+ messages in thread
From: Alexander Kapshuk @ 2019-09-21 11:37 UTC (permalink / raw)
  To: linux-kernel; +Cc: tglx, mingo, bp, hpa, x86, Alexander Kapshuk

This patch fixes the regexp warnings shown below:
  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

The ':' and '&' characters need not escaping when used in string constants
as part of regular expressions.

[Test-run]
awk -f /home/sasha/torvalds/arch/x86/tools/gen-insn-attr-x86.awk \
	/home/sasha/torvalds/arch/x86/lib/x86-opcode-map.txt >tmp/inat-tables.c

diff -U0 /home/sasha/torvalds/tools/objtool/arch/x86/lib/inat-tables.c \
tmp/inat-tables.c; echo $?
0

[Debugging output]
DBG:ext:(66&F2)
DBG:match(ext, ...):(66&F2)
DBG:match(..., lprefix3_expr):\((F2|!F3|66&F2)\)

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
---
 arch/x86/tools/gen-insn-attr-x86.awk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/tools/gen-insn-attr-x86.awk b/arch/x86/tools/gen-insn-attr-x86.awk
index b02a36b2c14f..a42015b305f4 100644
--- 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,       i,j,imm,mod)
 	return add_flags(imm, mod)
 }

-/^[0-9a-f]+\:/ {
+/^[0-9a-f]+:/ {
 	if (NR == 1)
 		next
 	# get index
--
2.23.0


^ permalink raw reply related	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2019-10-01 10:20 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-21 11:37 [PATCH] gen-insn-attr-x86.awk: Fix regexp warnings Alexander Kapshuk
2019-09-22  8:33 ` kbuild test robot
2019-09-22 15:03   ` [PATCH RESEND] " Alexander Kapshuk
2019-09-23  9:19     ` Borislav Petkov
2019-09-23  9:56       ` Alexander Kapshuk
2019-09-23 10:27         ` Borislav Petkov
2019-09-23 10:31     ` Borislav Petkov
2019-09-23 10:54       ` Alexander Kapshuk
2019-09-23 18:49       ` Masami Hiramatsu
2019-09-24  4:46         ` Alexander Kapshuk
2019-09-30  5:34           ` Borislav Petkov
2019-09-30  5:48             ` Alexander Kapshuk
2019-10-01 10:19           ` [tip: core/objtool] x86/insn: Fix awk " tip-bot2 for Alexander Kapshuk

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