--- /dev/null
+ #!/bin/sh
+ #
+ # link vmlinux
+ #
+ # vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_INIT) and
+ # $(KBUILD_VMLINUX_MAIN). Most are built-in.o files from top-level directories
+ # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
+ # Ordering when linking is important, and $(KBUILD_VMLINUX_INIT) must be first.
+ #
+ # vmlinux
+ # ^
+ # |
+ # +-< $(KBUILD_VMLINUX_INIT)
+ # | +--< init/version.o + more
+ # |
+ # +--< $(KBUILD_VMLINUX_MAIN)
+ # | +--< drivers/built-in.o mm/built-in.o + more
+ # |
+ # +-< ${kallsymso} (see description in KALLSYMS section)
+ #
+ # vmlinux version (uname -v) cannot be updated during normal
+ # descending-into-subdirs phase since we do not yet know if we need to
+ # update vmlinux.
+ # Therefore this step is delayed until just before final link of vmlinux.
+ #
+ # System.map is generated to document addresses of all kernel symbols
+
+ # Error out on error
+ set -e
+
+ # Nice output in kbuild format
+ # Will be supressed by "make -s"
+ info()
+ {
+ if [ "${quiet}" != "silent_" ]; then
+ printf " %-7s %s\n" ${1} ${2}
+ fi
+ }
+
+ # Link of vmlinux.o used for section mismatch analysis
+ # ${1} output file
+ modpost_link()
+ {
+ ${LD} ${LDFLAGS} -r -o ${1} ${KBUILD_VMLINUX_INIT} \
+ --start-group ${KBUILD_VMLINUX_MAIN} --end-group
+ }
+
+ # Link of vmlinux
+ # ${1} - optional extra .o files
+ # ${2} - output file
+ vmlinux_link()
+ {
+ local lds="${objtree}/${KBUILD_LDS}"
+
+ if [ "${SRCARCH}" != "um" ]; then
+ ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} \
+ -T ${lds} ${KBUILD_VMLINUX_INIT} \
+ --start-group ${KBUILD_VMLINUX_MAIN} --end-group ${1}
+ else
+ ${CC} ${CFLAGS_vmlinux} -o ${2} \
+ -Wl,-T,${lds} ${KBUILD_VMLINUX_INIT} \
+ -Wl,--start-group \
+ ${KBUILD_VMLINUX_MAIN} \
+ -Wl,--end-group \
+ -lutil ${1}
+ rm -f linux
+ fi
+ }
+
+
+ # Create ${2} .o file with all symbols from the ${1} object file
+ kallsyms()
+ {
+ info KSYM ${2}
+ local kallsymopt;
+
+ if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then
+ kallsymopt=--all-symbols
+ fi
+
+ local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
+ ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"
+
+ ${NM} -n ${1} | \
+ scripts/kallsyms ${kallsymopt} | \
+ ${CC} ${aflags} -c -o ${2} -x assembler-with-cpp -
+ }
+
+ # Create map file with all symbols from ${1}
+ # See mksymap for additional details
+ mksysmap()
+ {
+ ${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2}
+ }
+
++sortextable()
++{
++ ${objtree}/scripts/sortextable ${1}
++}
++
+ # Delete output files in case of error
+ trap cleanup SIGHUP SIGINT SIGQUIT SIGTERM ERR
+ cleanup()
+ {
+ rm -f .old_version
+ rm -f .tmp_System.map
+ rm -f .tmp_kallsyms*
+ rm -f .tmp_version
+ rm -f .tmp_vmlinux*
+ rm -f System.map
+ rm -f vmlinux
+ rm -f vmlinux.o
+ }
+
+ #
+ #
+ # Use "make V=1" to debug this script
+ case "${KBUILD_VERBOSE}" in
+ *1*)
+ set -x
+ ;;
+ esac
+
+ if [ "$1" = "clean" ]; then
+ cleanup
+ exit 0
+ fi
+
+ # We need access to CONFIG_ symbols
+ . ./.config
+
+ #link vmlinux.o
+ info LD vmlinux.o
+ modpost_link vmlinux.o
+
+ # modpost vmlinux.o to check for section mismatches
+ ${MAKE} -f "${srctree}/scripts/Makefile.modpost" vmlinux.o
+
+ # Update version
+ info GEN .version
+ if [ ! -r .version ]; then
+ rm -f .version;
+ echo 1 >.version;
+ else
+ mv .version .old_version;
+ expr 0$(cat .old_version) + 1 >.version;
+ fi;
+
+ # final build of init/
+ ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init
+
+ kallsymso=""
+ kallsyms_vmlinux=""
+ if [ -n "${CONFIG_KALLSYMS}" ]; then
+
+ # kallsyms support
+ # Generate section listing all symbols and add it into vmlinux
+ # It's a three step process:
+ # 1) Link .tmp_vmlinux1 so it has all symbols and sections,
+ # but __kallsyms is empty.
+ # Running kallsyms on that gives us .tmp_kallsyms1.o with
+ # the right size
+ # 2) Link .tmp_vmlinux2 so it now has a __kallsyms section of
+ # the right size, but due to the added section, some
+ # addresses have shifted.
+ # From here, we generate a correct .tmp_kallsyms2.o
+ # 2a) We may use an extra pass as this has been necessary to
+ # woraround some alignment related bugs.
+ # KALLSYMS_EXTRA_PASS=1 is used to trigger this.
+ # 3) The correct ${kallsymso} is linked into the final vmlinux.
+ #
+ # a) Verify that the System.map from vmlinux matches the map from
+ # ${kallsymso}.
+
+ kallsymso=.tmp_kallsyms2.o
+ kallsyms_vmlinux=.tmp_vmlinux2
+
+ # step 1
+ vmlinux_link "" .tmp_vmlinux1
+ kallsyms .tmp_vmlinux1 .tmp_kallsyms1.o
+
+ # step 2
+ vmlinux_link .tmp_kallsyms1.o .tmp_vmlinux2
+ kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o
+
+ # step 2a
+ if [ -n "${KALLSYMS_EXTRA_PASS}" ]; then
+ kallsymso=.tmp_kallsyms3.o
+ kallsyms_vmlinux=.tmp_vmlinux3
+
+ vmlinux_link .tmp_kallsyms2.o .tmp_vmlinux3
+
+ kallsyms .tmp_vmlinux3 .tmp_kallsyms3.o
+ fi
+ fi
+
+ info LD vmlinux
+ vmlinux_link "${kallsymso}" vmlinux
+
++if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then
++ info SORTEX vmlinux
++ sortextable vmlinux
++fi
++
+ info SYSMAP System.map
+ mksysmap vmlinux System.map
+
+ # step a (see comment above)
+ if [ -n "${CONFIG_KALLSYMS}" ]; then
+ mksysmap ${kallsyms_vmlinux} .tmp_System.map
+
+ if ! cmp -s System.map .tmp_System.map; then
+ echo Inconsistent kallsyms data
+ echo echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround
+ cleanup
+ exit 1
+ fi
+ fi
+
+ # We made a new kernel - delete old version file
+ rm -f .old_version
git.samba.org / sfrench / cifs-2.6.git / commitdiff