diff options
Diffstat (limited to 'elf/Makefile')
| -rw-r--r-- | elf/Makefile | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/elf/Makefile b/elf/Makefile index 5470728ae7..5fdcec46df 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -23,7 +23,7 @@ subdir := elf headers = elf.h bits/elfclass.h link.h routines = $(dl-routines) dl-open dl-close dl-support dl-iteratephdr \ dl-iteratephdr-static dl-addr enbl-secure dl-profstub \ - dl-origin dl-libc dl-sym + dl-origin dl-libc dl-sym dl-tsd # The core dynamic linking functions are in libc for the static and # profiled libraries. @@ -37,11 +37,11 @@ elide-routines.os = $(all-dl-routines) dl-support enbl-secure \ # ld.so uses those routines, plus some special stuff for being the program # interpreter and operating independent of libc. -rtld-routines := rtld $(dl-routines) dl-sysdep dl-environ dl-minimal \ - dl-xstat64 dl-fxstat64 +rtld-routines := rtld $(dl-routines) dl-sysdep dl-environ dl-minimal all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines) -distribute := $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \ +distribute := rtld-Rules \ + $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \ dl-cache.h dl-hash.h soinit.c sofini.c ldd.bash.in \ genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \ dl-librecon.h interp.c sln.c dl-dst.h hp-timing.h \ @@ -166,14 +166,49 @@ lib-noranlib: $(objpfx)$(rtld-installed-name) \ endif # Command to link into a larger single relocatable object. -reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@ +reloc-link = $(LINK.o) -nostdlib -nostartfiles -r $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os) - $(reloc-link) $^ + $(reloc-link) -o $@ $^ # Link together the dynamic linker into a single relocatable object. -$(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a - $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)' +# First we do a link against libc_pic.a just to get a link map, +# and discard the object produced by that link. From the link map +# we can glean all the libc modules that need to go into the dynamic +# linker. Then we do a recursive make that goes into all the subdirs +# those modules come from and builds special rtld-foo.os versions that +# are compiled with special flags, and puts these modules into rtld-libc.a +# for us. Then we do the real link using rtld-libc.a instead of libc_pic.a. + +$(objpfx)librtld.map: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a + $(reloc-link) -o $@.o '-Wl,-(' $^ -lgcc '-Wl,-)' -Wl,-Map,$@ + rm -f $@.o + +$(objpfx)librtld.mk: $(objpfx)librtld.map Makefile + sed -n 's@^$(common-objpfx)\([^(]*\)(\(.*.os\))$$@\1 \2@p' $< | \ + while read lib file; do \ + case $$lib in \ + libc_pic.a) \ + fgrep -l /$$file \ + $(common-objpfx)stamp.os $(common-objpfx)*/stamp.os | \ + sed 's@^$(common-objpfx)\([^/]*\)/stamp\.os$$@rtld-\1'" +=$$file@"\ + ;; \ + */*.a) \ + echo rtld-$${lib%%/*} += $$file ;; \ + *) echo "Wasn't expecting $$lib($$file)" >&2; exit 1 ;; \ + esac; \ + done > $@T + echo rtld-subdirs = `sed 's/^rtld-\([^ ]*\).*$$/\1/' $@T \ + | sort -u` >> $@T + mv -f $@T $@ + +$(objpfx)rtld-libc.a: $(objpfx)librtld.mk FORCE + $(MAKE) -f $< -f rtld-Rules + +generated += librtld.map librtld.mk rtld-libc.a + +$(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(objpfx)rtld-libc.a + $(LINK.o) -nostdlib -nostartfiles -r -o $@ '-Wl,-(' $^ -lgcc '-Wl,-)' $(objpfx)ld.so: $(objpfx)librtld.os $(ld-map) @rm -f $@.lds @@ -209,6 +244,7 @@ $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig $(make-target-directory) echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))" \ | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T}; + echo '#define DL_DST_LIB "$(notdir $(slibdir))"' >> ${@:st=T} $(move-if-change) ${@:st=T} ${@:st=h} touch $@ CPPFLAGS-dl-load.c = -I$(objpfx). -I$(csu-objpfx). @@ -265,7 +301,7 @@ CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' -D'SLIBDIR="$(slibdi CFLAGS-dl-cache.c = $(SYSCONF-FLAGS) CFLAGS-cache.c = $(SYSCONF-FLAGS) -CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),-DNOT_IN_libc -DIS_IN_rtld) +CPPFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),-DNOT_IN_libc=1 -DIS_IN_rtld=1) test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names)))) generated += $(addsuffix .so,$(strip $(modules-names))) |