Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | # |
| 4 | # link vmlinux |
| 5 | # |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 6 | # vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_OBJS) and |
| 7 | # $(KBUILD_VMLINUX_LIBS). Most are built-in.a files from top-level directories |
| 8 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
| 9 | # $(KBUILD_VMLINUX_LIBS) are archives which are linked conditionally |
| 10 | # (not within --whole-archive), and do not require symbol indexes added. |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 11 | # |
| 12 | # vmlinux |
| 13 | # ^ |
| 14 | # | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 15 | # +--< $(KBUILD_VMLINUX_OBJS) |
| 16 | # | +--< init/built-in.a drivers/built-in.a mm/built-in.a + more |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 17 | # | |
| 18 | # +--< $(KBUILD_VMLINUX_LIBS) |
| 19 | # | +--< lib/lib.a + more |
| 20 | # | |
| 21 | # +-< ${kallsymso} (see description in KALLSYMS section) |
| 22 | # |
| 23 | # vmlinux version (uname -v) cannot be updated during normal |
| 24 | # descending-into-subdirs phase since we do not yet know if we need to |
| 25 | # update vmlinux. |
| 26 | # Therefore this step is delayed until just before final link of vmlinux. |
| 27 | # |
| 28 | # System.map is generated to document addresses of all kernel symbols |
| 29 | |
| 30 | # Error out on error |
| 31 | set -e |
| 32 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 33 | LD="$1" |
| 34 | KBUILD_LDFLAGS="$2" |
| 35 | LDFLAGS_vmlinux="$3" |
| 36 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 37 | # Nice output in kbuild format |
| 38 | # Will be supressed by "make -s" |
| 39 | info() |
| 40 | { |
| 41 | if [ "${quiet}" != "silent_" ]; then |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 42 | printf " %-7s %s\n" "${1}" "${2}" |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 43 | fi |
| 44 | } |
| 45 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 46 | # Link of vmlinux.o used for section mismatch analysis |
| 47 | # ${1} output file |
| 48 | modpost_link() |
| 49 | { |
| 50 | local objects |
| 51 | |
| 52 | objects="--whole-archive \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 53 | ${KBUILD_VMLINUX_OBJS} \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 54 | --no-whole-archive \ |
| 55 | --start-group \ |
| 56 | ${KBUILD_VMLINUX_LIBS} \ |
| 57 | --end-group" |
| 58 | |
| 59 | ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${objects} |
| 60 | } |
| 61 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 62 | objtool_link() |
| 63 | { |
| 64 | local objtoolopt; |
| 65 | |
| 66 | if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then |
| 67 | objtoolopt="check" |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame^] | 68 | if [ -n "${CONFIG_CPU_UNRET_ENTRY}" ]; then |
| 69 | objtoolopt="${objtoolopt} --unret" |
| 70 | fi |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 71 | if [ -z "${CONFIG_FRAME_POINTER}" ]; then |
| 72 | objtoolopt="${objtoolopt} --no-fp" |
| 73 | fi |
| 74 | if [ -n "${CONFIG_GCOV_KERNEL}" ]; then |
| 75 | objtoolopt="${objtoolopt} --no-unreachable" |
| 76 | fi |
| 77 | if [ -n "${CONFIG_RETPOLINE}" ]; then |
| 78 | objtoolopt="${objtoolopt} --retpoline" |
| 79 | fi |
| 80 | if [ -n "${CONFIG_X86_SMAP}" ]; then |
| 81 | objtoolopt="${objtoolopt} --uaccess" |
| 82 | fi |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame^] | 83 | if [ -n "${CONFIG_SLS}" ]; then |
| 84 | objtoolopt="${objtoolopt} --sls" |
| 85 | fi |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 86 | info OBJTOOL ${1} |
| 87 | tools/objtool/objtool ${objtoolopt} ${1} |
| 88 | fi |
| 89 | } |
| 90 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 91 | # Link of vmlinux |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 92 | # ${1} - output file |
| 93 | # ${2}, ${3}, ... - optional extra .o files |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 94 | vmlinux_link() |
| 95 | { |
| 96 | local lds="${objtree}/${KBUILD_LDS}" |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 97 | local output=${1} |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 98 | local objects |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 99 | local strip_debug |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 100 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 101 | info LD ${output} |
| 102 | |
| 103 | # skip output file argument |
| 104 | shift |
| 105 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 106 | # The kallsyms linking does not need debug symbols included. |
| 107 | if [ "$output" != "${output#.tmp_vmlinux.kallsyms}" ] ; then |
| 108 | strip_debug=-Wl,--strip-debug |
| 109 | fi |
| 110 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 111 | if [ "${SRCARCH}" != "um" ]; then |
| 112 | objects="--whole-archive \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 113 | ${KBUILD_VMLINUX_OBJS} \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 114 | --no-whole-archive \ |
| 115 | --start-group \ |
| 116 | ${KBUILD_VMLINUX_LIBS} \ |
| 117 | --end-group \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 118 | ${@}" |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 119 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 120 | ${LD} ${KBUILD_LDFLAGS} ${LDFLAGS_vmlinux} \ |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 121 | ${strip_debug#-Wl,} \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 122 | -o ${output} \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 123 | -T ${lds} ${objects} |
| 124 | else |
| 125 | objects="-Wl,--whole-archive \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 126 | ${KBUILD_VMLINUX_OBJS} \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 127 | -Wl,--no-whole-archive \ |
| 128 | -Wl,--start-group \ |
| 129 | ${KBUILD_VMLINUX_LIBS} \ |
| 130 | -Wl,--end-group \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 131 | ${@}" |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 132 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 133 | ${CC} ${CFLAGS_vmlinux} \ |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 134 | ${strip_debug} \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 135 | -o ${output} \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 136 | -Wl,-T,${lds} \ |
| 137 | ${objects} \ |
| 138 | -lutil -lrt -lpthread |
| 139 | rm -f linux |
| 140 | fi |
| 141 | } |
| 142 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 143 | # generate .BTF typeinfo from DWARF debuginfo |
| 144 | # ${1} - vmlinux image |
| 145 | # ${2} - file to dump raw BTF data into |
| 146 | gen_btf() |
| 147 | { |
| 148 | local pahole_ver |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 149 | |
| 150 | if ! [ -x "$(command -v ${PAHOLE})" ]; then |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 151 | echo >&2 "BTF: ${1}: pahole (${PAHOLE}) is not available" |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 152 | return 1 |
| 153 | fi |
| 154 | |
| 155 | pahole_ver=$(${PAHOLE} --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/') |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 156 | if [ "${pahole_ver}" -lt "116" ]; then |
| 157 | echo >&2 "BTF: ${1}: pahole version $(${PAHOLE} --version) is too old, need at least v1.16" |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 158 | return 1 |
| 159 | fi |
| 160 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 161 | vmlinux_link ${1} |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 162 | |
| 163 | info "BTF" ${2} |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame^] | 164 | LLVM_OBJCOPY="${OBJCOPY}" ${PAHOLE} -J ${PAHOLE_FLAGS} ${1} |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 165 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 166 | # Create ${2} which contains just .BTF section but no symbols. Add |
| 167 | # SHF_ALLOC because .BTF will be part of the vmlinux image. --strip-all |
| 168 | # deletes all symbols including __start_BTF and __stop_BTF, which will |
| 169 | # be redefined in the linker script. Add 2>/dev/null to suppress GNU |
| 170 | # objcopy warnings: "empty loadable segment detected at ..." |
| 171 | ${OBJCOPY} --only-section=.BTF --set-section-flags .BTF=alloc,readonly \ |
| 172 | --strip-all ${1} ${2} 2>/dev/null |
| 173 | # Change e_type to ET_REL so that it can be used to link final vmlinux. |
| 174 | # Unlike GNU ld, lld does not allow an ET_EXEC input. |
| 175 | printf '\1' | dd of=${2} conv=notrunc bs=1 seek=16 status=none |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 176 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 177 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 178 | # Create ${2} .S file with all symbols from the ${1} object file |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 179 | kallsyms() |
| 180 | { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 181 | local kallsymopt; |
| 182 | |
| 183 | if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then |
| 184 | kallsymopt="${kallsymopt} --all-symbols" |
| 185 | fi |
| 186 | |
| 187 | if [ -n "${CONFIG_KALLSYMS_ABSOLUTE_PERCPU}" ]; then |
| 188 | kallsymopt="${kallsymopt} --absolute-percpu" |
| 189 | fi |
| 190 | |
| 191 | if [ -n "${CONFIG_KALLSYMS_BASE_RELATIVE}" ]; then |
| 192 | kallsymopt="${kallsymopt} --base-relative" |
| 193 | fi |
| 194 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 195 | info KSYMS ${2} |
| 196 | ${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${2} |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 197 | } |
| 198 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 199 | # Perform one step in kallsyms generation, including temporary linking of |
| 200 | # vmlinux. |
| 201 | kallsyms_step() |
| 202 | { |
| 203 | kallsymso_prev=${kallsymso} |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 204 | kallsyms_vmlinux=.tmp_vmlinux.kallsyms${1} |
| 205 | kallsymso=${kallsyms_vmlinux}.o |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 206 | kallsyms_S=${kallsyms_vmlinux}.S |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 207 | |
| 208 | vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o} |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 209 | kallsyms ${kallsyms_vmlinux} ${kallsyms_S} |
| 210 | |
| 211 | info AS ${kallsyms_S} |
| 212 | ${CC} ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS} \ |
| 213 | ${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ |
| 214 | -c -o ${kallsymso} ${kallsyms_S} |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 215 | } |
| 216 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 217 | # Create map file with all symbols from ${1} |
| 218 | # See mksymap for additional details |
| 219 | mksysmap() |
| 220 | { |
| 221 | ${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2} |
| 222 | } |
| 223 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 224 | sorttable() |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 225 | { |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 226 | ${objtree}/scripts/sorttable ${1} |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | # Delete output files in case of error |
| 230 | cleanup() |
| 231 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 232 | rm -f .btf.* |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 233 | rm -f .tmp_System.map |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 234 | rm -f .tmp_vmlinux* |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 235 | rm -f System.map |
| 236 | rm -f vmlinux |
| 237 | rm -f vmlinux.o |
| 238 | } |
| 239 | |
| 240 | on_exit() |
| 241 | { |
| 242 | if [ $? -ne 0 ]; then |
| 243 | cleanup |
| 244 | fi |
| 245 | } |
| 246 | trap on_exit EXIT |
| 247 | |
| 248 | on_signals() |
| 249 | { |
| 250 | exit 1 |
| 251 | } |
| 252 | trap on_signals HUP INT QUIT TERM |
| 253 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 254 | # Use "make V=1" to debug this script |
| 255 | case "${KBUILD_VERBOSE}" in |
| 256 | *1*) |
| 257 | set -x |
| 258 | ;; |
| 259 | esac |
| 260 | |
| 261 | if [ "$1" = "clean" ]; then |
| 262 | cleanup |
| 263 | exit 0 |
| 264 | fi |
| 265 | |
| 266 | # We need access to CONFIG_ symbols |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 267 | . include/config/auto.conf |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 268 | |
| 269 | # Update version |
| 270 | info GEN .version |
| 271 | if [ -r .version ]; then |
| 272 | VERSION=$(expr 0$(cat .version) + 1) |
| 273 | echo $VERSION > .version |
| 274 | else |
| 275 | rm -f .version |
| 276 | echo 1 > .version |
| 277 | fi; |
| 278 | |
| 279 | # final build of init/ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 280 | ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 281 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 282 | #link vmlinux.o |
| 283 | info LD vmlinux.o |
| 284 | modpost_link vmlinux.o |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 285 | objtool_link vmlinux.o |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 286 | |
| 287 | # modpost vmlinux.o to check for section mismatches |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 288 | ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1 |
| 289 | |
| 290 | info MODINFO modules.builtin.modinfo |
| 291 | ${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 292 | info GEN modules.builtin |
| 293 | # The second line aids cases where multiple modules share the same object. |
| 294 | tr '\0' '\n' < modules.builtin.modinfo | sed -n 's/^[[:alnum:]:_]*\.file=//p' | |
| 295 | tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$/.ko/' > modules.builtin |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 296 | |
| 297 | btf_vmlinux_bin_o="" |
| 298 | if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 299 | btf_vmlinux_bin_o=.btf.vmlinux.bin.o |
| 300 | if ! gen_btf .tmp_vmlinux.btf $btf_vmlinux_bin_o ; then |
| 301 | echo >&2 "Failed to generate BTF for vmlinux" |
| 302 | echo >&2 "Try to disable CONFIG_DEBUG_INFO_BTF" |
| 303 | exit 1 |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 304 | fi |
| 305 | fi |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 306 | |
| 307 | kallsymso="" |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 308 | kallsymso_prev="" |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 309 | kallsyms_vmlinux="" |
| 310 | if [ -n "${CONFIG_KALLSYMS}" ]; then |
| 311 | |
| 312 | # kallsyms support |
| 313 | # Generate section listing all symbols and add it into vmlinux |
| 314 | # It's a three step process: |
| 315 | # 1) Link .tmp_vmlinux1 so it has all symbols and sections, |
| 316 | # but __kallsyms is empty. |
| 317 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
| 318 | # the right size |
| 319 | # 2) Link .tmp_vmlinux2 so it now has a __kallsyms section of |
| 320 | # the right size, but due to the added section, some |
| 321 | # addresses have shifted. |
| 322 | # From here, we generate a correct .tmp_kallsyms2.o |
| 323 | # 3) That link may have expanded the kernel image enough that |
| 324 | # more linker branch stubs / trampolines had to be added, which |
| 325 | # introduces new names, which further expands kallsyms. Do another |
| 326 | # pass if that is the case. In theory it's possible this results |
| 327 | # in even more stubs, but unlikely. |
| 328 | # KALLSYMS_EXTRA_PASS=1 may also used to debug or work around |
| 329 | # other bugs. |
| 330 | # 4) The correct ${kallsymso} is linked into the final vmlinux. |
| 331 | # |
| 332 | # a) Verify that the System.map from vmlinux matches the map from |
| 333 | # ${kallsymso}. |
| 334 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 335 | kallsyms_step 1 |
| 336 | kallsyms_step 2 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 337 | |
| 338 | # step 3 |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 339 | size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso_prev}) |
| 340 | size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso}) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 341 | |
| 342 | if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 343 | kallsyms_step 3 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 344 | fi |
| 345 | fi |
| 346 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 347 | vmlinux_link vmlinux "${kallsymso}" ${btf_vmlinux_bin_o} |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 348 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 349 | # fill in BTF IDs |
| 350 | if [ -n "${CONFIG_DEBUG_INFO_BTF}" -a -n "${CONFIG_BPF}" ]; then |
| 351 | info BTFIDS vmlinux |
| 352 | ${RESOLVE_BTFIDS} vmlinux |
| 353 | fi |
| 354 | |
| 355 | if [ -n "${CONFIG_BUILDTIME_TABLE_SORT}" ]; then |
| 356 | info SORTTAB vmlinux |
| 357 | if ! sorttable vmlinux; then |
| 358 | echo >&2 Failed to sort kernel tables |
| 359 | exit 1 |
| 360 | fi |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 361 | fi |
| 362 | |
| 363 | info SYSMAP System.map |
| 364 | mksysmap vmlinux System.map |
| 365 | |
| 366 | # step a (see comment above) |
| 367 | if [ -n "${CONFIG_KALLSYMS}" ]; then |
| 368 | mksysmap ${kallsyms_vmlinux} .tmp_System.map |
| 369 | |
| 370 | if ! cmp -s System.map .tmp_System.map; then |
| 371 | echo >&2 Inconsistent kallsyms data |
| 372 | echo >&2 Try "make KALLSYMS_EXTRA_PASS=1" as a workaround |
| 373 | exit 1 |
| 374 | fi |
| 375 | fi |