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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849#!/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\\)|<unknown>|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))" fwait_expr = "^9b[ \t]*fwait" 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}