49 lines
1.3 KiB
Awk
49 lines
1.3 KiB
Awk
|
#!/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
|
||
|
|
}
|