Messages in this thread Patch in this message | | | From | Samuel Zeter <> | Subject | [PATCH 1/2] arch/x86/tools/objdump_reformat.awk: Ensure regex matches fwait | Date | Thu, 6 Jan 2022 13:36:04 +1100 |
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If there is "wait" mnemonic in the line being parsed, it is incorrectly handled by the script, and an extra line of "fwait" in objdump_reformat's output is inserted. As insn_decoder_test relies upon the formatted output, the test fails.
This is reproducible when disassembling with llvm-objdump:
Pre-processed lines: ffffffff81033e72: 9b wait ffffffff81033e73: 48 c7 c7 89 50 42 82 movq
After objdump_reformat.awk: ffffffff81033e72: 9b fwait ffffffff81033e72: wait ffffffff81033e73: 48 c7 c7 89 50 42 82 movq
This patch fixes the issue by requiring spaces, or tabs, along with the "fwait" instruction in the regex match.
Signed-off-by: Samuel Zeter <samuelzeter@gmail.com> --- arch/x86/tools/objdump_reformat.awk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/tools/objdump_reformat.awk b/arch/x86/tools/objdump_reformat.awk index f418c91b71f0..276e572a6f60 100644 --- a/arch/x86/tools/objdump_reformat.awk +++ b/arch/x86/tools/objdump_reformat.awk @@ -12,7 +12,7 @@ BEGIN { prev_hex = "" prev_mnemonic = "" bad_expr = "(\\(bad\\)|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))" - fwait_expr = "^9b " + fwait_expr = "^9b[ \t]*fwait" fwait_str="9b\tfwait" } -- 2.32.0
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