X-Git-Url: http://git.csclub.uwaterloo.ca/?p=kopensolaris-gnu%2Fglibc.git;a=blobdiff_plain;f=csu%2FMakefile;h=cb9e6eb6aa4528db4918b6d3b186093525365d05;hp=144a82653ad36d7e5a70b488f0e37ba0f9af2941;hb=498ae94d188e914524ee6f6bcda3bf75809b1359;hpb=f497dfd55bbfdd01dc3c26e3eedfccf638969378 diff --git a/csu/Makefile b/csu/Makefile index 144a82653a..cb9e6eb6aa 100644 --- a/csu/Makefile +++ b/csu/Makefile @@ -1,6 +1,6 @@ # Makefile for csu code for GNU C library. -# Copyright (C) 1995, 1996 Free Software Foundation, Inc. +# Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. # This file is part of the GNU C Library. # The GNU C Library is free software; you can redistribute it and/or @@ -14,9 +14,9 @@ # Library General Public License for more details. # You should have received a copy of the GNU Library General Public -# License along with the GNU C Library; see the file COPYING.LIB. If -# not, write to the Free Software Foundation, Inc., 675 Mass Ave, -# Cambridge, MA 02139, USA. +# License along with the GNU C Library; see the file COPYING.LIB. If not, +# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. # This directory contains the C startup code (that which calls main). This # consists of the startfile, built from start.c and installed as crt0.o @@ -27,6 +27,7 @@ subdir := csu +routines = init-first csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o) extra-objs = start.o gmon-start.o \ $(start-installed-name) g$(start-installed-name) \ @@ -35,27 +36,17 @@ omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \ $(csu-dummies)) install-lib = $(start-installed-name) g$(start-installed-name) \ $(csu-dummies) -distribute = initfini.c +distribute = initfini.c gmon-start.c start.c defs.awk abi-note.S all: # Make this the default target; it will be defined in Rules. include ../Makeconfig -ifneq ($(elf),yes) - -# When not using ELF, there is just one startfile, called crt0.o. -start-installed-name = crt0.o - -else - -# In the ELF universe, crt0.o is called crt1.o, and there are -# some additional bizarre files. -start-installed-name = crt1.o -have-initfini = yes - +ifeq ($(elf),yes) +before-compile = $(objpfx)abi-tag.h endif -ifeq (yes,$(have-initfini)) +ifeq ($(have-initfini),yes) CPPFLAGS += -DHAVE_INITFINI @@ -66,45 +57,69 @@ crtstuff = crti crtn install-lib += $(crtstuff:=.o) extra-objs += $(crtstuff:=.o) -generated += $(crtstuff:=.s) +generated += $(crtstuff:=.S) initfini.s defs.h omit-deps += $(crtstuff) -# Compile initfini.c to assembly code, which contains embedded shell -# commands that prodice crti.s-new and crtn.s-new when run. We need to -# disable emission of .size directives and debugging information, since -# they will get confused by the splitting of the output we do. -$(objpfx)cr%i.s $(objpfx)cr%n.s: initfini.c; $(initfini) - -define initfini --rm -f $(objpfx)crtcommon.tmp -(echo 'cat > crtcommon.tmp <<\EOF_common'; \ - $(CC) $< $(CPPFLAGS) $(CFLAGS) \ - -fPIC -finhibit-size-directive -g0 -S -o -; \ - echo 'EOF_common') | (cd $(@D); $(SHELL)) -cat $(objpfx)crtcommon.tmp >> $(objpfx)crti.s-new -cat $(objpfx)crtcommon.tmp >> $(objpfx)crtn.s-new -rm -f $(objpfx)crtcommon.tmp -mv -f $(objpfx)crti.s-new $(subst crtn,crti,$@) -mv -f $(objpfx)crtn.s-new $(subst crti,crtn,$@) -endef +# Special rules for the building of crti.o and crtn.o +$(objpfx)crt%.o: $(objpfx)crt%.S $(objpfx)defs.h + $(compile.S) -g0 $(ASFLAGS-.os) -o $@ + +CFLAGS-initfini.s = -g0 -fPIC -fno-inline-functions + +$(objpfx)initfini.s: initfini.c + $(compile.c) -S $(CFLAGS-initfini.s) -finhibit-size-directive \ + $(no-exceptions) -o $@ + +# We only have one kind of startup code files. Static binaries and +# shared libraries are build using the PIC version. +$(objpfx)crti.S: $(objpfx)initfini.s + sed -n -e '1,/@HEADER_ENDS/p' \ + -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \ + -e '/@TRAILER_BEGINS/,$$p' $< > $@ +$(objpfx)crtn.S: $(objpfx)initfini.s + sed -n -e '1,/@HEADER_ENDS/p' \ + -e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \ + -e '/@TRAILER_BEGINS/,$$p' $< > $@ + +$(objpfx)defs.h: $(objpfx)initfini.s + sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \ + awk -f defs.awk > $@ + +endif + +ifeq (yes,$(elf)) +extra-objs += abi-note.o +asm-CPPFLAGS += -I$(objpfx). endif include ../Rules +define link-relocatable +$(CC) -nostdlib -nostartfiles -r -o $@ $^ +endef + ifndef start-installed-name-rule +ifeq (yes,$(elf)) +# We link the ELF startfile along with a SHT_NOTE section indicating +# the the kernel ABI the binaries linked with this library will require. +$(objpfx)$(start-installed-name): $(objpfx)start.o $(objpfx)abi-note.o + $(link-relocatable) +else # The startfile is installed under different names, so we just call our # source file `start.c' and copy to the installed name after compiling. $(objpfx)$(start-installed-name): $(objpfx)start.o - -rm -f $@ + rm -f $@ ln $< $@ endif +endif # The profiling startfile is made by linking together the normal # startfile with gmon-start.o, which defines a constructor function # to turn on profiling code at startup. -$(objpfx)g$(start-installed-name): $(objpfx)start.o $(objpfx)gmon-start.o - $(CC) -nostdlib -nostartfiles -r -o $@ $^ +$(objpfx)g$(start-installed-name): $(objpfx)$(start-installed-name) \ + $(objpfx)gmon-start.o + $(link-relocatable) # These extra files are sometimes expected by system standard linking # procedures, but we have nothing for them to do. So compile empty files. @@ -113,3 +128,15 @@ $(addprefix $(objpfx),$(filter-out $(start-installed-name),$(csu-dummies))): $(COMPILE.c) $(@:.o=.c) $(OUTPUT_OPTION) rm -f $(@:.o=.c) +/ := $$/# bite me. +$(objpfx)abi-tag.h: $(..)abi-tags + $(make-target-directory) + rm -f $@.new + sed 's/#.*$//;/^[ ]*$$/d' $< | while read conf tag; do \ + test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \ + : "$$conf"` != 0 || continue; \ + echo "$$tag" | sed > $@.new \ + 's/[^0-9xXa-fA-F]/ /g;s/ *$//;s/ /,/g;s/^ */#define ABI_TAG /';\ + done + if test -r $@.new; then mv -f $@.new $@; \ + else echo >&2 'This configuration not matched in $<'; exit 1; fi