From ce460d04a5bd10d7353ca37dfa9d34275449fb3b Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Fri, 11 Oct 2002 10:52:20 +0000 Subject: * sysdeps/generic/bits/libc-tsd.h [USE___THREAD]: Conditional changed from [USE_TLS && HAVE___THREAD]. * sysdeps/i386/dl-machine.h (elf_machine_type_class, elf_machine_rel): Disable TLS relocs if [RTLD_BOOTSTRAP && !USE___THREAD]. * sysdeps/x86_64/dl-machine.h (elf_machine_type_class, elf_machine_rela): Likewise. * sysdeps/sh/dl-machine.h (elf_machine_type_class, elf_machine_rela): Likewise. * include/link.h (struct link_map): Remove member l_tls_tp_initialized. * elf/rtld.c (_dl_start_final, dl_main): Don't use it. (_dl_start): Conditionalize PT_TLS check on [USE___THREAD]. * sysdeps/i386/dl-tls.h (__TLS_GET_ADDR): Use ___tls_get_addr_internal instead of ___tls_get_addr. (___tls_get_addr_internal): Add attribute_hidden to decl. * sysdeps/generic/ldsodefs.h (struct rtld_global): New variable _dl_error_catch_tsd. * elf/rtld.c (startup_error_tsd): New function. (dl_main): Point _dl_error_catch_tsd at that. * elf/dl-error.c: Don't use libc-tsd.h for DL_ERROR, use new function pointer instead. * elf/dl-tsd.c: New file. * elf/Makefile (routines): Add it. 2002-10-07 Roland McGrath * elf/dl-misc.c (_dl_debug_vdprintf): Use INTERNAL_SYSCALL macro for writev if it's available. Otherwise if [RTLD_PRIVATE_ERRNO] then take _dl_load_lock around calling __writev. * sysdeps/unix/sysv/linux/i386/sysdep.h (INTERNAL_SYSCALL): New macro. (INLINE_SYSCALL): Use that. * sysdeps/generic/dl-sysdep.h: New file. * sysdeps/mach/hurd/dl-sysdep.h: New file. * sysdeps/generic/ldsodefs.h: Include . * include/errno.h [IS_IN_rtld]: Include to define ... [RTLD_PRIVATE_ERRNO]: Use a hidden global variable for errno and access it directly. * elf/dl-minimal.c (__errno_location): Removed. * sysdeps/unix/i386/sysdep.S (__syscall_errno) [RTLD_PRIVATE_ERRNO]: Use GOTOFF access for errno. * sysdeps/unix/sysv/linux/i386/sysdep.h [RTLD_PRIVATE_ERRNO] (SYSCALL_ERROR_HANDLER): Likewise. * sysdeps/unix/x86_64/sysdep.S (__syscall_errno) [RTLD_PRIVATE_ERRNO]: Use PC-relative access for errno. * sysdeps/unix/sysv/linux/x86_64/sysdep.h [RTLD_PRIVATE_ERRNO] (SYSCALL_ERROR_HANDLER): Likewise. * include/tls.h: New file. (USE___THREAD): New macro. Define to 1 under [USE_TLS && HAVE___THREAD] and only when compiling libc or libpthread. * sysdeps/unix/sysv/linux/i386/sysdep.h [USE___THREAD]: Conditional changed from [USE_TLS && HAVE___THREAD]. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise. * sysdeps/unix/i386/sysdep.S: Likewise. * sysdeps/unix/x86_64/sysdep.S: Likewise. * include/errno.h: Likewise. * include/netdb.h: Likewise. * include/resolv.h: Likewise. * sysdeps/generic/errno.c: New file. * csu/Makefile (aux): New variable, list errno. * sysdeps/unix/sysv/linux/i386/sysdep.S (errno, _errno): Remove defns. * sysdeps/unix/sysv/linux/m68k/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/arm/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/cris/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/hppa/sysdep.c: Likewise. * sysdeps/unix/sysv/linux/ia64/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/sysdep.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/sh/sysdep.S: Likewise. * sysdeps/unix/alpha/sysdep.S: Likewise. * sysdeps/generic/start.c: Likewise. * sysdeps/unix/start.c: Likewise. * sysdeps/unix/arm/start.c: Likewise. * sysdeps/unix/bsd/ultrix4/mips/start.S: Likewise. * sysdeps/unix/sparc/start.c: Likewise. * sysdeps/unix/sysv/irix4/start.c: Likewise. * sysdeps/unix/sysv/linux/mips/sysdep.S: File removed. * manual/search.texi (Tree Search Function, Hash Search Function): Mention search.h clearly. 2002-10-05 Roland McGrath * elf/dl-fxstat64.c: File removed. * elf/dl-xstat64.c: File removed. * elf/Makefile (rtld-routines): Remove them. * sysdeps/unix/sysv/linux/xstat64.c: Remove RTLD_STAT64 conditionals. Instead, use strong_alias instead of versioned_symbol in the !SHLIB_COMPAT case. * sysdeps/unix/sysv/linux/fxstat64.c: Likewise. * sysdeps/unix/sysv/linux/lxstat64.c: Likewise. * include/shlib-compat.h (SHLIB_COMPAT): Require that IS_IN_##lib be defined nonzero. [! NOT_IN_libc] (IS_IN_libc): Define it. * cppflags-iterator.mk (CPPFLAGS-$(cpp-src)): Use -Dx=1 not just -Dx. * elf/Makefile (CPPFLAGS-.os): Likewise. * sunrpc/rpc_main.c (main): Don't declare with noreturn attribute. Return the status instead of calling exit. * Makeconfig (CFLAGS): Prepend -std=gnu99. * Makerules (+make-deps): Use $(CFLAGS) only for .c sources. Remove superfluous rm command, whose @ plus make bugs hid all these commands from the make output. * include/stubs-prologue.h: New file. Give #error under #ifdef _LIBC. * Makefile ($(inst_includedir)/gnu/stubs.h): Depend on it. Use that file's contents instead of literal echo's for the prologue. * include/features.h: Include unconditionally. * include/gnu/stubs.h: New file. 2002-09-30 Roland McGrath * elf/rtld-Rules: New file. * elf/Makefile ($(objpfx)librtld.map, $(objpfx)librtld.mk, $(objpfx)rtld-libc.a): New targets. (generated): Add them. (reloc-link): Remove -o $@ from the variable. ($(objpfx)dl-allobjs.os): Add -o $@ after $(reloc-link). (distribute): Add rtld-Rules. (CPPFLAGS-.os): Define this instead of CFLAGS-.os. * Makerules ($(+sysdir_pfx)sysd-rules): Emit rules for rtld-% targets. (common-mostlyclean, common-clean): Clean up rtld-* files. * sysdeps/unix/make-syscalls.sh: Add rtld-*.os target name to rules. --- elf/Makefile | 54 +++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 45 insertions(+), 9 deletions(-) (limited to 'elf/Makefile') 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))) -- cgit v1.2.3