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1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3# (c) 2014, Sasha Levin <sasha.levin@oracle.com>
4#set -x
5
6if [[ $# < 2 ]]; then
7 echo "Usage:"
8 echo " $0 [vmlinux] [base path] [modules path]"
9 exit 1
10fi
11
12vmlinux=$1
13basepath=$2
14modpath=$3
15declare -A cache
16declare -A modcache
17
18parse_symbol() {
19 # The structure of symbol at this point is:
20 # ([name]+[offset]/[total length])
21 #
22 # For example:
23 # do_basic_setup+0x9c/0xbf
24
25 if [[ $module == "" ]] ; then
26 local objfile=$vmlinux
27 elif [[ "${modcache[$module]+isset}" == "isset" ]]; then
28 local objfile=${modcache[$module]}
29 else
30 [[ $modpath == "" ]] && return
31 local objfile=$(find "$modpath" -name "${module//_/[-_]}.ko*" -print -quit)
32 [[ $objfile == "" ]] && return
33 modcache[$module]=$objfile
34 fi
35
36 # Remove the englobing parenthesis
37 symbol=${symbol#\(}
38 symbol=${symbol%\)}
39
40 # Strip segment
41 local segment
42 if [[ $symbol == *:* ]] ; then
43 segment=${symbol%%:*}:
44 symbol=${symbol#*:}
45 fi
46
47 # Strip the symbol name so that we could look it up
48 local name=${symbol%+*}
49
50 # Use 'nm vmlinux' to figure out the base address of said symbol.
51 # It's actually faster to call it every time than to load it
52 # all into bash.
53 if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
54 local base_addr=${cache[$module,$name]}
55 else
56 local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1)
57 cache[$module,$name]="$base_addr"
58 fi
59 # Let's start doing the math to get the exact address into the
60 # symbol. First, strip out the symbol total length.
61 local expr=${symbol%/*}
62
63 # Now, replace the symbol name with the base address we found
64 # before.
65 expr=${expr/$name/0x$base_addr}
66
67 # Evaluate it to find the actual address
68 expr=$((expr))
69 local address=$(printf "%x\n" "$expr")
70
71 # Pass it to addr2line to get filename and line number
72 # Could get more than one result
73 if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then
74 local code=${cache[$module,$address]}
75 else
76 local code=$(${CROSS_COMPILE}addr2line -i -e "$objfile" "$address")
77 cache[$module,$address]=$code
78 fi
79
80 # addr2line doesn't return a proper error code if it fails, so
81 # we detect it using the value it prints so that we could preserve
82 # the offset/size into the function and bail out
83 if [[ $code == "??:0" ]]; then
84 return
85 fi
86
87 # Strip out the base of the path
88 code=${code#$basepath/}
89
90 # In the case of inlines, move everything to same line
91 code=${code//$'\n'/' '}
92
93 # Replace old address with pretty line numbers
94 symbol="$segment$name ($code)"
95}
96
97decode_code() {
98 local scripts=`dirname "${BASH_SOURCE[0]}"`
99
100 echo "$1" | $scripts/decodecode
101}
102
103handle_line() {
104 local words
105
106 # Tokenize
107 read -a words <<<"$1"
108
109 # Remove hex numbers. Do it ourselves until it happens in the
110 # kernel
111
112 # We need to know the index of the last element before we
113 # remove elements because arrays are sparse
114 local last=$(( ${#words[@]} - 1 ))
115
116 for i in "${!words[@]}"; do
117 # Remove the address
118 if [[ ${words[$i]} =~ \[\<([^]]+)\>\] ]]; then
119 unset words[$i]
120 fi
121
122 # Format timestamps with tabs
123 if [[ ${words[$i]} == \[ && ${words[$i+1]} == *\] ]]; then
124 unset words[$i]
125 words[$i+1]=$(printf "[%13s\n" "${words[$i+1]}")
126 fi
127 done
128
129 if [[ ${words[$last]} =~ \[([^]]+)\] ]]; then
130 module=${words[$last]}
131 module=${module#\[}
132 module=${module%\]}
133 symbol=${words[$last-1]}
134 unset words[$last-1]
135 else
136 # The symbol is the last element, process it
137 symbol=${words[$last]}
138 module=
139 fi
140
141 unset words[$last]
142 parse_symbol # modifies $symbol
143
144 # Add up the line number to the symbol
145 echo "${words[@]}" "$symbol $module"
146}
147
148while read line; do
149 # Let's see if we have an address in the line
150 if [[ $line =~ \[\<([^]]+)\>\] ]] ||
151 [[ $line =~ [^+\ ]+\+0x[0-9a-f]+/0x[0-9a-f]+ ]]; then
152 # Translate address to line numbers
153 handle_line "$line"
154 # Is it a code line?
155 elif [[ $line == *Code:* ]]; then
156 decode_code "$line"
157 else
158 # Nothing special in this line, show it as is
159 echo "$line"
160 fi
161done
1#!/bin/bash
2# (c) 2014, Sasha Levin <sasha.levin@oracle.com>
3#set -x
4
5if [[ $# < 2 ]]; then
6 echo "Usage:"
7 echo " $0 [vmlinux] [base path] [modules path]"
8 exit 1
9fi
10
11vmlinux=$1
12basepath=$2
13modpath=$3
14declare -A cache
15declare -A modcache
16
17parse_symbol() {
18 # The structure of symbol at this point is:
19 # ([name]+[offset]/[total length])
20 #
21 # For example:
22 # do_basic_setup+0x9c/0xbf
23
24 if [[ $module == "" ]] ; then
25 local objfile=$vmlinux
26 elif [[ "${modcache[$module]+isset}" == "isset" ]]; then
27 local objfile=${modcache[$module]}
28 else
29 [[ $modpath == "" ]] && return
30 local objfile=$(find "$modpath" -name $module.ko -print -quit)
31 [[ $objfile == "" ]] && return
32 modcache[$module]=$objfile
33 fi
34
35 # Remove the englobing parenthesis
36 symbol=${symbol#\(}
37 symbol=${symbol%\)}
38
39 # Strip the symbol name so that we could look it up
40 local name=${symbol%+*}
41
42 # Use 'nm vmlinux' to figure out the base address of said symbol.
43 # It's actually faster to call it every time than to load it
44 # all into bash.
45 if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
46 local base_addr=${cache[$module,$name]}
47 else
48 local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1)
49 cache[$module,$name]="$base_addr"
50 fi
51 # Let's start doing the math to get the exact address into the
52 # symbol. First, strip out the symbol total length.
53 local expr=${symbol%/*}
54
55 # Now, replace the symbol name with the base address we found
56 # before.
57 expr=${expr/$name/0x$base_addr}
58
59 # Evaluate it to find the actual address
60 expr=$((expr))
61 local address=$(printf "%x\n" "$expr")
62
63 # Pass it to addr2line to get filename and line number
64 # Could get more than one result
65 if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then
66 local code=${cache[$module,$address]}
67 else
68 local code=$(addr2line -i -e "$objfile" "$address")
69 cache[$module,$address]=$code
70 fi
71
72 # addr2line doesn't return a proper error code if it fails, so
73 # we detect it using the value it prints so that we could preserve
74 # the offset/size into the function and bail out
75 if [[ $code == "??:0" ]]; then
76 return
77 fi
78
79 # Strip out the base of the path
80 code=${code//$basepath/""}
81
82 # In the case of inlines, move everything to same line
83 code=${code//$'\n'/' '}
84
85 # Replace old address with pretty line numbers
86 symbol="$name ($code)"
87}
88
89decode_code() {
90 local scripts=`dirname "${BASH_SOURCE[0]}"`
91
92 echo "$1" | $scripts/decodecode
93}
94
95handle_line() {
96 local words
97
98 # Tokenize
99 read -a words <<<"$1"
100
101 # Remove hex numbers. Do it ourselves until it happens in the
102 # kernel
103
104 # We need to know the index of the last element before we
105 # remove elements because arrays are sparse
106 local last=$(( ${#words[@]} - 1 ))
107
108 for i in "${!words[@]}"; do
109 # Remove the address
110 if [[ ${words[$i]} =~ \[\<([^]]+)\>\] ]]; then
111 unset words[$i]
112 fi
113
114 # Format timestamps with tabs
115 if [[ ${words[$i]} == \[ && ${words[$i+1]} == *\] ]]; then
116 unset words[$i]
117 words[$i+1]=$(printf "[%13s\n" "${words[$i+1]}")
118 fi
119 done
120
121 if [[ ${words[$last]} =~ \[([^]]+)\] ]]; then
122 module=${words[$last]}
123 module=${module#\[}
124 module=${module%\]}
125 symbol=${words[$last-1]}
126 unset words[$last-1]
127 else
128 # The symbol is the last element, process it
129 symbol=${words[$last]}
130 module=
131 fi
132
133 unset words[$last]
134 parse_symbol # modifies $symbol
135
136 # Add up the line number to the symbol
137 echo "${words[@]}" "$symbol $module"
138}
139
140while read line; do
141 # Let's see if we have an address in the line
142 if [[ $line =~ \[\<([^]]+)\>\] ]] ||
143 [[ $line =~ [^+\ ]+\+0x[0-9a-f]+/0x[0-9a-f]+ ]]; then
144 # Translate address to line numbers
145 handle_line "$line"
146 # Is it a code line?
147 elif [[ $line == *Code:* ]]; then
148 decode_code "$line"
149 else
150 # Nothing special in this line, show it as is
151 echo "$line"
152 fi
153done