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Merge branch 'bugzilla-14782' into release
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1 #!/bin/awk -f
2 # Usage: objdump -d a.out | awk -f distill.awk | ./test_get_len
3 # Distills the disassembly as follows:
4 # - Removes all lines except the disassembled instructions.
5 # - For instructions that exceed 1 line (7 bytes), crams all the hex bytes
6 # into a single line.
7 # - Remove bad(or prefix only) instructions
8
9 BEGIN {
10 prev_addr = ""
11 prev_hex = ""
12 prev_mnemonic = ""
13 bad_expr = "(\\(bad\\)|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))"
14 fwait_expr = "^9b "
15 fwait_str="9b\tfwait"
16 }
17
18 /^ *[0-9a-f]+ <[^>]*>:/ {
19 # Symbol entry
20 printf("%s%s\n", $2, $1)
21 }
22
23 /^ *[0-9a-f]+:/ {
24 if (split($0, field, "\t") < 3) {
25 # This is a continuation of the same insn.
26 prev_hex = prev_hex field[2]
27 } else {
28 # Skip bad instructions
29 if (match(prev_mnemonic, bad_expr))
30 prev_addr = ""
31 # Split fwait from other f* instructions
32 if (match(prev_hex, fwait_expr) && prev_mnemonic != "fwait") {
33 printf "%s\t%s\n", prev_addr, fwait_str
34 sub(fwait_expr, "", prev_hex)
35 }
36 if (prev_addr != "")
37 printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
38 prev_addr = field[1]
39 prev_hex = field[2]
40 prev_mnemonic = field[3]
41 }
42 }
43
44 END {
45 if (prev_addr != "")
46 printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
47 }