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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2017-11-24 18:10:54 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-12-12 15:27:47 +0300 |
| commit | 98fe07fccc3e25889186277a5158c0a658d528a4 (patch) | |
| tree | 94ba6ea9b98ec571a472f2ce55846f741590fac3 /arch/x86/tools/objdump_reformat.awk | |
| parent | 6b63dd119eb4eee44733ca435168ce05487b8644 (diff) | |
| download | linux-98fe07fccc3e25889186277a5158c0a658d528a4.tar.xz | |
x86/tools: Rename distill.awk to objdump_reformat.awk
Rename distill.awk to objdump_reformat.awk because it more
clearly expresses its purpose of re-formatting the output
of objdump so that insn_decoder_test can read it.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/151153625409.22827.10470603625519700259.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/tools/objdump_reformat.awk')
| -rw-r--r-- | arch/x86/tools/objdump_reformat.awk | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/x86/tools/objdump_reformat.awk b/arch/x86/tools/objdump_reformat.awk new file mode 100644 index 000000000000..f418c91b71f0 --- /dev/null +++ b/arch/x86/tools/objdump_reformat.awk @@ -0,0 +1,48 @@ +#!/bin/awk -f +# SPDX-License-Identifier: GPL-2.0 +# Usage: objdump -d a.out | awk -f objdump_reformat.awk | ./insn_decoder_test +# Reformats the disassembly as follows: +# - Removes all lines except the disassembled instructions. +# - For instructions that exceed 1 line (7 bytes), crams all the hex bytes +# into a single line. +# - Remove bad(or prefix only) instructions + +BEGIN { + prev_addr = "" + 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_str="9b\tfwait" +} + +/^ *[0-9a-f]+ <[^>]*>:/ { + # Symbol entry + printf("%s%s\n", $2, $1) +} + +/^ *[0-9a-f]+:/ { + if (split($0, field, "\t") < 3) { + # This is a continuation of the same insn. + prev_hex = prev_hex field[2] + } else { + # Skip bad instructions + if (match(prev_mnemonic, bad_expr)) + prev_addr = "" + # Split fwait from other f* instructions + if (match(prev_hex, fwait_expr) && prev_mnemonic != "fwait") { + printf "%s\t%s\n", prev_addr, fwait_str + sub(fwait_expr, "", prev_hex) + } + if (prev_addr != "") + printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic + prev_addr = field[1] + prev_hex = field[2] + prev_mnemonic = field[3] + } +} + +END { + if (prev_addr != "") + printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic +} |