1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # Translate stack dump function offsets. 4 # Translate stack dump function offsets.
5 # 5 #
6 # addr2line doesn't work with KASLR addresses. 6 # addr2line doesn't work with KASLR addresses. This works similarly to
7 # addr2line, but instead takes the 'func+0x123 7 # addr2line, but instead takes the 'func+0x123' format as input:
8 # 8 #
9 # $ ./scripts/faddr2line ~/k/vmlinux meminfo 9 # $ ./scripts/faddr2line ~/k/vmlinux meminfo_proc_show+0x5/0x568
10 # meminfo_proc_show+0x5/0x568: 10 # meminfo_proc_show+0x5/0x568:
11 # meminfo_proc_show at fs/proc/meminfo.c:27 11 # meminfo_proc_show at fs/proc/meminfo.c:27
12 # 12 #
13 # If the address is part of an inlined functio 13 # If the address is part of an inlined function, the full inline call chain is
14 # printed: 14 # printed:
15 # 15 #
16 # $ ./scripts/faddr2line ~/k/vmlinux native_ 16 # $ ./scripts/faddr2line ~/k/vmlinux native_write_msr+0x6/0x27
17 # native_write_msr+0x6/0x27: 17 # native_write_msr+0x6/0x27:
18 # arch_static_branch at arch/x86/include/asm 18 # arch_static_branch at arch/x86/include/asm/msr.h:121
19 # (inlined by) static_key_false at include/ 19 # (inlined by) static_key_false at include/linux/jump_label.h:125
20 # (inlined by) native_write_msr at arch/x86 20 # (inlined by) native_write_msr at arch/x86/include/asm/msr.h:125
21 # 21 #
22 # The function size after the '/' in the input 22 # The function size after the '/' in the input is optional, but recommended.
23 # It's used to help disambiguate any duplicate 23 # It's used to help disambiguate any duplicate symbol names, which can occur
24 # rarely. If the size is omitted for a duplic 24 # rarely. If the size is omitted for a duplicate symbol then it's possible for
25 # multiple code sites to be printed: 25 # multiple code sites to be printed:
26 # 26 #
27 # $ ./scripts/faddr2line ~/k/vmlinux raw_ioc 27 # $ ./scripts/faddr2line ~/k/vmlinux raw_ioctl+0x5
28 # raw_ioctl+0x5/0x20: 28 # raw_ioctl+0x5/0x20:
29 # raw_ioctl at drivers/char/raw.c:122 29 # raw_ioctl at drivers/char/raw.c:122
30 # 30 #
31 # raw_ioctl+0x5/0xb1: 31 # raw_ioctl+0x5/0xb1:
32 # raw_ioctl at net/ipv4/raw.c:876 32 # raw_ioctl at net/ipv4/raw.c:876
33 # 33 #
34 # Multiple addresses can be specified on a sin 34 # Multiple addresses can be specified on a single command line:
35 # 35 #
36 # $ ./scripts/faddr2line ~/k/vmlinux type_sh 36 # $ ./scripts/faddr2line ~/k/vmlinux type_show+0x10/45 free_reserved_area+0x90
37 # type_show+0x10/0x2d: 37 # type_show+0x10/0x2d:
38 # type_show at drivers/video/backlight/backl 38 # type_show at drivers/video/backlight/backlight.c:213
39 # 39 #
40 # free_reserved_area+0x90/0x123: 40 # free_reserved_area+0x90/0x123:
41 # free_reserved_area at mm/page_alloc.c:6429 41 # free_reserved_area at mm/page_alloc.c:6429 (discriminator 2)
42 42
43 43
44 set -o errexit 44 set -o errexit
45 set -o nounset 45 set -o nounset
46 46
47 usage() { 47 usage() {
48 echo "usage: faddr2line [--list] <obje 48 echo "usage: faddr2line [--list] <object file> <func+offset> <func+offset>..." >&2
49 exit 1 49 exit 1
50 } 50 }
51 51
52 warn() { 52 warn() {
53 echo "$1" >&2 53 echo "$1" >&2
54 } 54 }
55 55
56 die() { 56 die() {
57 echo "ERROR: $1" >&2 57 echo "ERROR: $1" >&2
58 exit 1 58 exit 1
59 } 59 }
60 60
61 UTIL_SUFFIX="" 61 UTIL_SUFFIX=""
62 if [[ "${LLVM:-}" == "" ]]; then 62 if [[ "${LLVM:-}" == "" ]]; then
63 UTIL_PREFIX=${CROSS_COMPILE:-} 63 UTIL_PREFIX=${CROSS_COMPILE:-}
64 else 64 else
65 UTIL_PREFIX=llvm- 65 UTIL_PREFIX=llvm-
66 66
67 if [[ "${LLVM}" == *"/" ]]; then 67 if [[ "${LLVM}" == *"/" ]]; then
68 UTIL_PREFIX=${LLVM}${UTIL_PREF 68 UTIL_PREFIX=${LLVM}${UTIL_PREFIX}
69 elif [[ "${LLVM}" == "-"* ]]; then 69 elif [[ "${LLVM}" == "-"* ]]; then
70 UTIL_SUFFIX=${LLVM} 70 UTIL_SUFFIX=${LLVM}
71 fi 71 fi
72 fi 72 fi
73 73
74 READELF="${UTIL_PREFIX}readelf${UTIL_SUFFIX}" 74 READELF="${UTIL_PREFIX}readelf${UTIL_SUFFIX}"
75 ADDR2LINE="${UTIL_PREFIX}addr2line${UTIL_SUFFI 75 ADDR2LINE="${UTIL_PREFIX}addr2line${UTIL_SUFFIX}"
76 AWK="awk" 76 AWK="awk"
77 GREP="grep" 77 GREP="grep"
78 78
79 command -v ${AWK} >/dev/null 2>&1 || die "${AW 79 command -v ${AWK} >/dev/null 2>&1 || die "${AWK} isn't installed"
80 command -v ${READELF} >/dev/null 2>&1 || die " 80 command -v ${READELF} >/dev/null 2>&1 || die "${READELF} isn't installed"
81 command -v ${ADDR2LINE} >/dev/null 2>&1 || die 81 command -v ${ADDR2LINE} >/dev/null 2>&1 || die "${ADDR2LINE} isn't installed"
82 82
83 # Try to figure out the source directory prefi 83 # Try to figure out the source directory prefix so we can remove it from the
84 # addr2line output. HACK ALERT: This assumes 84 # addr2line output. HACK ALERT: This assumes that start_kernel() is in
85 # init/main.c! This only works for vmlinux. 85 # init/main.c! This only works for vmlinux. Otherwise it falls back to
86 # printing the absolute path. 86 # printing the absolute path.
87 find_dir_prefix() { 87 find_dir_prefix() {
88 local start_kernel_addr=$(echo "${ELF_ 88 local start_kernel_addr=$(echo "${ELF_SYMS}" | sed 's/\[.*\]//' |
89 ${AWK} '$8 == "start_kernel" { 89 ${AWK} '$8 == "start_kernel" {printf "0x%s", $2}')
90 [[ -z $start_kernel_addr ]] && return 90 [[ -z $start_kernel_addr ]] && return
91 91
92 run_addr2line ${start_kernel_addr} "" 92 run_addr2line ${start_kernel_addr} ""
93 [[ -z $ADDR2LINE_OUT ]] && return 93 [[ -z $ADDR2LINE_OUT ]] && return
94 94
95 local file_line=${ADDR2LINE_OUT#* at } 95 local file_line=${ADDR2LINE_OUT#* at }
96 if [[ -z $file_line ]] || [[ $file_lin 96 if [[ -z $file_line ]] || [[ $file_line = $ADDR2LINE_OUT ]]; then
97 return 97 return
98 fi 98 fi
99 local prefix=${file_line%init/main.c:* 99 local prefix=${file_line%init/main.c:*}
100 if [[ -z $prefix ]] || [[ $prefix = $f 100 if [[ -z $prefix ]] || [[ $prefix = $file_line ]]; then
101 return 101 return
102 fi 102 fi
103 103
104 DIR_PREFIX=$prefix 104 DIR_PREFIX=$prefix
105 return 0 105 return 0
106 } 106 }
107 107
108 run_readelf() { 108 run_readelf() {
109 local objfile=$1 109 local objfile=$1
110 local out=$(${READELF} --file-header - 110 local out=$(${READELF} --file-header --section-headers --symbols --wide $objfile)
111 111
112 # This assumes that readelf first prin 112 # This assumes that readelf first prints the file header, then the section headers, then the symbols.
113 # Note: It seems that GNU readelf does 113 # Note: It seems that GNU readelf does not prefix section headers with the "There are X section headers"
114 # line when multiple options are given 114 # line when multiple options are given, so let's also match with the "Section Headers:" line.
115 ELF_FILEHEADER=$(echo "${out}" | sed - 115 ELF_FILEHEADER=$(echo "${out}" | sed -n '/There are [0-9]* section headers, starting at offset\|Section Headers:/q;p')
116 ELF_SECHEADERS=$(echo "${out}" | sed - 116 ELF_SECHEADERS=$(echo "${out}" | sed -n '/There are [0-9]* section headers, starting at offset\|Section Headers:/,$p' | sed -n '/Symbol table .* contains [0-9]* entries:/q;p')
117 ELF_SYMS=$(echo "${out}" | sed -n '/Sy 117 ELF_SYMS=$(echo "${out}" | sed -n '/Symbol table .* contains [0-9]* entries:/,$p')
118 } 118 }
119 119
120 check_vmlinux() { 120 check_vmlinux() {
121 # vmlinux uses absolute addresses in t 121 # vmlinux uses absolute addresses in the section table rather than
122 # section offsets. 122 # section offsets.
123 IS_VMLINUX=0 123 IS_VMLINUX=0
124 local file_type=$(echo "${ELF_FILEHEAD 124 local file_type=$(echo "${ELF_FILEHEADER}" |
125 ${AWK} '$1 == "Type:" { print 125 ${AWK} '$1 == "Type:" { print $2; exit }')
126 if [[ $file_type = "EXEC" ]] || [[ $fi 126 if [[ $file_type = "EXEC" ]] || [[ $file_type == "DYN" ]]; then
127 IS_VMLINUX=1 127 IS_VMLINUX=1
128 fi 128 fi
129 } 129 }
130 130
131 init_addr2line() { 131 init_addr2line() {
132 local objfile=$1 132 local objfile=$1
133 133
134 check_vmlinux 134 check_vmlinux
135 135
136 ADDR2LINE_ARGS="--functions --pretty-p 136 ADDR2LINE_ARGS="--functions --pretty-print --inlines --addresses --exe=$objfile"
137 if [[ $IS_VMLINUX = 1 ]]; then 137 if [[ $IS_VMLINUX = 1 ]]; then
138 # If the executable file is vm 138 # If the executable file is vmlinux, we don't pass section names to
139 # addr2line, so we can launch 139 # addr2line, so we can launch it now as a single long-running process.
140 coproc ADDR2LINE_PROC (${ADDR2 140 coproc ADDR2LINE_PROC (${ADDR2LINE} ${ADDR2LINE_ARGS})
141 fi 141 fi
142 } 142 }
143 143
144 run_addr2line() { 144 run_addr2line() {
145 local addr=$1 145 local addr=$1
146 local sec_name=$2 146 local sec_name=$2
147 147
148 if [[ $IS_VMLINUX = 1 ]]; then 148 if [[ $IS_VMLINUX = 1 ]]; then
149 # We send to the addr2line pro 149 # We send to the addr2line process: (1) the address, then (2) a sentinel
150 # value, i.e., something that 150 # value, i.e., something that can't be interpreted as a valid address
151 # (i.e., ","). This causes add 151 # (i.e., ","). This causes addr2line to write out: (1) the answer for
152 # our address, then (2) either 152 # our address, then (2) either "?? ??:0" or "0x0...0: ..." (if
153 # using binutils' addr2line), 153 # using binutils' addr2line), or "," (if using LLVM's addr2line).
154 echo ${addr} >& "${ADDR2LINE_P 154 echo ${addr} >& "${ADDR2LINE_PROC[1]}"
155 echo "," >& "${ADDR2LINE_PROC[ 155 echo "," >& "${ADDR2LINE_PROC[1]}"
156 local first_line 156 local first_line
157 read -r first_line <& "${ADDR2 157 read -r first_line <& "${ADDR2LINE_PROC[0]}"
158 ADDR2LINE_OUT=$(echo "${first_ 158 ADDR2LINE_OUT=$(echo "${first_line}" | sed 's/^0x[0-9a-fA-F]*: //')
159 while read -r line <& "${ADDR2 159 while read -r line <& "${ADDR2LINE_PROC[0]}"; do
160 if [[ "$line" == "?? ? 160 if [[ "$line" == "?? ??:0" ]] || [[ "$line" == "," ]] || [[ $(echo "$line" | ${GREP} "^0x00*: ") ]]; then
161 break 161 break
162 fi 162 fi
163 ADDR2LINE_OUT+=$'\n'$( 163 ADDR2LINE_OUT+=$'\n'$(echo "$line" | sed 's/^0x[0-9a-fA-F]*: //')
164 done 164 done
165 else 165 else
166 # Run addr2line as a single in 166 # Run addr2line as a single invocation.
167 local sec_arg 167 local sec_arg
168 [[ -z $sec_name ]] && sec_arg= 168 [[ -z $sec_name ]] && sec_arg="" || sec_arg="--section=${sec_name}"
169 ADDR2LINE_OUT=$(${ADDR2LINE} $ 169 ADDR2LINE_OUT=$(${ADDR2LINE} ${ADDR2LINE_ARGS} ${sec_arg} ${addr} | sed 's/^0x[0-9a-fA-F]*: //')
170 fi 170 fi
171 } 171 }
172 172
173 __faddr2line() { 173 __faddr2line() {
174 local objfile=$1 174 local objfile=$1
175 local func_addr=$2 175 local func_addr=$2
176 local dir_prefix=$3 176 local dir_prefix=$3
177 local print_warnings=$4 177 local print_warnings=$4
178 178
179 local sym_name=${func_addr%+*} 179 local sym_name=${func_addr%+*}
180 local func_offset=${func_addr#*+} 180 local func_offset=${func_addr#*+}
181 func_offset=${func_offset%/*} 181 func_offset=${func_offset%/*}
182 local user_size= 182 local user_size=
183 [[ $func_addr =~ "/" ]] && user_size=$ 183 [[ $func_addr =~ "/" ]] && user_size=${func_addr#*/}
184 184
185 if [[ -z $sym_name ]] || [[ -z $func_o 185 if [[ -z $sym_name ]] || [[ -z $func_offset ]] || [[ $sym_name = $func_addr ]]; then
186 warn "bad func+offset $func_ad 186 warn "bad func+offset $func_addr"
187 DONE=1 187 DONE=1
188 return 188 return
189 fi 189 fi
190 190
191 # Go through each of the object's symb 191 # Go through each of the object's symbols which match the func name.
192 # In rare cases there might be duplica 192 # In rare cases there might be duplicates, in which case we print all
193 # matches. 193 # matches.
194 while read line; do 194 while read line; do
195 local fields=($line) 195 local fields=($line)
196 local sym_addr=0x${fields[1]} 196 local sym_addr=0x${fields[1]}
197 local sym_elf_size=${fields[2] 197 local sym_elf_size=${fields[2]}
198 local sym_sec=${fields[6]} 198 local sym_sec=${fields[6]}
199 local sec_size 199 local sec_size
200 local sec_name 200 local sec_name
201 201
202 # Get the section size: 202 # Get the section size:
203 sec_size=$(echo "${ELF_SECHEAD 203 sec_size=$(echo "${ELF_SECHEADERS}" | sed 's/\[ /\[/' |
204 ${AWK} -v sec=$sym_sec 204 ${AWK} -v sec=$sym_sec '$1 == "[" sec "]" { print "0x" $6; exit }')
205 205
206 if [[ -z $sec_size ]]; then 206 if [[ -z $sec_size ]]; then
207 warn "bad section size 207 warn "bad section size: section: $sym_sec"
208 DONE=1 208 DONE=1
209 return 209 return
210 fi 210 fi
211 211
212 # Get the section name: 212 # Get the section name:
213 sec_name=$(echo "${ELF_SECHEAD 213 sec_name=$(echo "${ELF_SECHEADERS}" | sed 's/\[ /\[/' |
214 ${AWK} -v sec=$sym_sec 214 ${AWK} -v sec=$sym_sec '$1 == "[" sec "]" { print $2; exit }')
215 215
216 if [[ -z $sec_name ]]; then 216 if [[ -z $sec_name ]]; then
217 warn "bad section name 217 warn "bad section name: section: $sym_sec"
218 DONE=1 218 DONE=1
219 return 219 return
220 fi 220 fi
221 221
222 # Calculate the symbol size. 222 # Calculate the symbol size.
223 # 223 #
224 # Unfortunately we can't use t 224 # Unfortunately we can't use the ELF size, because kallsyms
225 # also includes the padding by 225 # also includes the padding bytes in its size calculation. For
226 # kallsyms, the size calculati 226 # kallsyms, the size calculation is the distance between the
227 # symbol and the next symbol i 227 # symbol and the next symbol in a sorted list.
228 local sym_size 228 local sym_size
229 local cur_sym_addr 229 local cur_sym_addr
230 local found=0 230 local found=0
231 while read line; do 231 while read line; do
232 local fields=($line) 232 local fields=($line)
233 cur_sym_addr=0x${field 233 cur_sym_addr=0x${fields[1]}
234 local cur_sym_elf_size 234 local cur_sym_elf_size=${fields[2]}
235 local cur_sym_name=${f 235 local cur_sym_name=${fields[7]:-}
236 236
237 # is_mapping_symbol(cu 237 # is_mapping_symbol(cur_sym_name)
238 if [[ ${cur_sym_name} 238 if [[ ${cur_sym_name} =~ ^(\.L|L0|\$) ]]; then
239 continue 239 continue
240 fi 240 fi
241 241
242 if [[ $cur_sym_addr = 242 if [[ $cur_sym_addr = $sym_addr ]] &&
243 [[ $cur_sym_elf_siz 243 [[ $cur_sym_elf_size = $sym_elf_size ]] &&
244 [[ $cur_sym_name = 244 [[ $cur_sym_name = $sym_name ]]; then
245 found=1 245 found=1
246 continue 246 continue
247 fi 247 fi
248 248
249 if [[ $found = 1 ]]; t 249 if [[ $found = 1 ]]; then
250 sym_size=$(($c 250 sym_size=$(($cur_sym_addr - $sym_addr))
251 [[ $sym_size - 251 [[ $sym_size -lt $sym_elf_size ]] && continue;
252 found=2 252 found=2
253 break 253 break
254 fi 254 fi
255 done < <(echo "${ELF_SYMS}" | 255 done < <(echo "${ELF_SYMS}" | sed 's/\[.*\]//' | ${AWK} -v sec=$sym_sec '$7 == sec' | sort --key=2 | ${GREP} -A1 --no-group-separator " ${sym_name}$")
256 256
257 if [[ $found = 0 ]]; then 257 if [[ $found = 0 ]]; then
258 warn "can't find symbo 258 warn "can't find symbol: sym_name: $sym_name sym_sec: $sym_sec sym_addr: $sym_addr sym_elf_size: $sym_elf_size"
259 DONE=1 259 DONE=1
260 return 260 return
261 fi 261 fi
262 262
263 # If nothing was found after t 263 # If nothing was found after the symbol, assume it's the last
264 # symbol in the section. 264 # symbol in the section.
265 [[ $found = 1 ]] && sym_size=$ 265 [[ $found = 1 ]] && sym_size=$(($sec_size - $sym_addr))
266 266
267 if [[ -z $sym_size ]] || [[ $s 267 if [[ -z $sym_size ]] || [[ $sym_size -le 0 ]]; then
268 warn "bad symbol size: 268 warn "bad symbol size: sym_addr: $sym_addr cur_sym_addr: $cur_sym_addr"
269 DONE=1 269 DONE=1
270 return 270 return
271 fi 271 fi
272 272
273 sym_size=0x$(printf %x $sym_si 273 sym_size=0x$(printf %x $sym_size)
274 274
275 # Calculate the address from u 275 # Calculate the address from user-supplied offset:
276 local addr=$(($sym_addr + $fun 276 local addr=$(($sym_addr + $func_offset))
277 if [[ -z $addr ]] || [[ $addr 277 if [[ -z $addr ]] || [[ $addr = 0 ]]; then
278 warn "bad address: $sy 278 warn "bad address: $sym_addr + $func_offset"
279 DONE=1 279 DONE=1
280 return 280 return
281 fi 281 fi
282 addr=0x$(printf %x $addr) 282 addr=0x$(printf %x $addr)
283 283
284 # If the user provided a size, 284 # If the user provided a size, make sure it matches the symbol's size:
285 if [[ -n $user_size ]] && [[ $ 285 if [[ -n $user_size ]] && [[ $user_size -ne $sym_size ]]; then
286 [[ $print_warnings = 1 286 [[ $print_warnings = 1 ]] &&
287 echo "skipping 287 echo "skipping $sym_name address at $addr due to size mismatch ($user_size != $sym_size)"
288 continue; 288 continue;
289 fi 289 fi
290 290
291 # Make sure the provided offse 291 # Make sure the provided offset is within the symbol's range:
292 if [[ $func_offset -gt $sym_si 292 if [[ $func_offset -gt $sym_size ]]; then
293 [[ $print_warnings = 1 293 [[ $print_warnings = 1 ]] &&
294 echo "skipping 294 echo "skipping $sym_name address at $addr due to size mismatch ($func_offset > $sym_size)"
295 continue 295 continue
296 fi 296 fi
297 297
298 # In case of duplicates or mul 298 # In case of duplicates or multiple addresses specified on the
299 # cmdline, separate multiple e 299 # cmdline, separate multiple entries with a blank line:
300 [[ $FIRST = 0 ]] && echo 300 [[ $FIRST = 0 ]] && echo
301 FIRST=0 301 FIRST=0
302 302
303 echo "$sym_name+$func_offset/$ 303 echo "$sym_name+$func_offset/$sym_size:"
304 304
305 # Pass section address to addr 305 # Pass section address to addr2line and strip absolute paths
306 # from the output: 306 # from the output:
307 run_addr2line $addr $sec_name 307 run_addr2line $addr $sec_name
308 local output=$(echo "${ADDR2LI 308 local output=$(echo "${ADDR2LINE_OUT}" | sed "s; $dir_prefix\(\./\)*; ;")
309 [[ -z $output ]] && continue 309 [[ -z $output ]] && continue
310 310
311 # Default output (non --list): 311 # Default output (non --list):
312 if [[ $LIST = 0 ]]; then 312 if [[ $LIST = 0 ]]; then
313 echo "$output" | while 313 echo "$output" | while read -r line
314 do 314 do
315 echo $line 315 echo $line
316 done 316 done
317 DONE=1; 317 DONE=1;
318 continue 318 continue
319 fi 319 fi
320 320
321 # For --list, show each line w 321 # For --list, show each line with its corresponding source code:
322 echo "$output" | while read -r 322 echo "$output" | while read -r line
323 do 323 do
324 echo 324 echo
325 echo $line 325 echo $line
326 n=$(echo $line | sed ' 326 n=$(echo $line | sed 's/.*:\([0-9]\+\).*/\1/g')
327 n1=$[$n-5] 327 n1=$[$n-5]
328 n2=$[$n+5] 328 n2=$[$n+5]
329 f=$(echo $line | sed ' 329 f=$(echo $line | sed 's/.*at \(.\+\):.*/\1/g')
330 ${AWK} 'NR>=strtonum(" 330 ${AWK} 'NR>=strtonum("'$n1'") && NR<=strtonum("'$n2'") { if (NR=='$n') printf(">%d<", NR); else printf(" %d ", NR); printf("\t%s\n", $0)}' $f
331 done 331 done
332 332
333 DONE=1 333 DONE=1
334 334
335 done < <(echo "${ELF_SYMS}" | sed 's/\ 335 done < <(echo "${ELF_SYMS}" | sed 's/\[.*\]//' | ${AWK} -v fn=$sym_name '$8 == fn')
336 } 336 }
337 337
338 [[ $# -lt 2 ]] && usage 338 [[ $# -lt 2 ]] && usage
339 339
340 objfile=$1 340 objfile=$1
341 341
342 LIST=0 342 LIST=0
343 [[ "$objfile" == "--list" ]] && LIST=1 && shif 343 [[ "$objfile" == "--list" ]] && LIST=1 && shift && objfile=$1
344 344
345 [[ ! -f $objfile ]] && die "can't find objfile 345 [[ ! -f $objfile ]] && die "can't find objfile $objfile"
346 shift 346 shift
347 347
348 run_readelf $objfile 348 run_readelf $objfile
349 349
350 echo "${ELF_SECHEADERS}" | ${GREP} -q '\.debug 350 echo "${ELF_SECHEADERS}" | ${GREP} -q '\.debug_info' || die "CONFIG_DEBUG_INFO not enabled"
351 351
352 init_addr2line $objfile 352 init_addr2line $objfile
353 353
354 DIR_PREFIX=supercalifragilisticexpialidocious 354 DIR_PREFIX=supercalifragilisticexpialidocious
355 find_dir_prefix 355 find_dir_prefix
356 356
357 FIRST=1 357 FIRST=1
358 while [[ $# -gt 0 ]]; do 358 while [[ $# -gt 0 ]]; do
359 func_addr=$1 359 func_addr=$1
360 shift 360 shift
361 361
362 # print any matches found 362 # print any matches found
363 DONE=0 363 DONE=0
364 __faddr2line $objfile $func_addr $DIR_ 364 __faddr2line $objfile $func_addr $DIR_PREFIX 0
365 365
366 # if no match was found, print warning 366 # if no match was found, print warnings
367 if [[ $DONE = 0 ]]; then 367 if [[ $DONE = 0 ]]; then
368 __faddr2line $objfile $func_ad 368 __faddr2line $objfile $func_addr $DIR_PREFIX 1
369 warn "no match for $func_addr" 369 warn "no match for $func_addr"
370 fi 370 fi
371 done 371 done
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