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98fe07fccc
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>
48 lines
1.3 KiB
Awk
48 lines
1.3 KiB
Awk
#!/bin/awk -f
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# SPDX-License-Identifier: GPL-2.0
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# Usage: objdump -d a.out | awk -f objdump_reformat.awk | ./insn_decoder_test
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# Reformats the disassembly as follows:
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# - Removes all lines except the disassembled instructions.
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# - For instructions that exceed 1 line (7 bytes), crams all the hex bytes
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# into a single line.
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# - Remove bad(or prefix only) instructions
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BEGIN {
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prev_addr = ""
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prev_hex = ""
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prev_mnemonic = ""
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bad_expr = "(\\(bad\\)|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))"
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fwait_expr = "^9b "
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fwait_str="9b\tfwait"
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}
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/^ *[0-9a-f]+ <[^>]*>:/ {
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# Symbol entry
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printf("%s%s\n", $2, $1)
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}
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/^ *[0-9a-f]+:/ {
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if (split($0, field, "\t") < 3) {
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# This is a continuation of the same insn.
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prev_hex = prev_hex field[2]
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} else {
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# Skip bad instructions
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if (match(prev_mnemonic, bad_expr))
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prev_addr = ""
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# Split fwait from other f* instructions
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if (match(prev_hex, fwait_expr) && prev_mnemonic != "fwait") {
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printf "%s\t%s\n", prev_addr, fwait_str
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sub(fwait_expr, "", prev_hex)
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}
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if (prev_addr != "")
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printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
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prev_addr = field[1]
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prev_hex = field[2]
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prev_mnemonic = field[3]
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}
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}
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END {
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if (prev_addr != "")
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printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
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}
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