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Remove old initfini mechanism.
This commit is contained in:
Joseph Myers
parent
599af3ca61
commit
0e7dfaef51
22
ChangeLog
22
ChangeLog
@ -1,3 +1,25 @@
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2012-02-21 Joseph Myers <joseph@codesourcery.com>
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[BZ #13695]
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* csu/Makefile (distribute): Remove initfini.c and defs.awk.
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[crti.S not in sysdirs] (generated): Do not append.
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[crti.S not in sysdirs] (omit-deps): Likewise.
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[crti.S not in sysdirs] ($(crtstuff:%=$(objpfx)%.o)): Remove rule.
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[crti.S not in sysdirs] ($(objpfx)initfini.s): Likewise.
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[crti.S not in sysdirs] ($(objpfx)crti.S): Likewise.
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[crti.S not in sysdirs] ($(objpfx)crtn.S): Likewise.
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[crti.S not in sysdirs] ($(patsubst %,$(objpfx)crt%.o,i n)):
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Likewise.
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[crti.S not in sysdirs] ($(objpfx)defs.h): Likewise.
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[crti.S not in sysdirs] (CFLAGS-initfini.s): Remove variable.
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[crti.S not in sysdirs] (initfini.c): Remove vpath directive.
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* csu/defs.awk: Remove file.
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* sysdeps/generic/initfini.c: Likewise.
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* sysdeps/powerpc/powerpc32/Makefile (CFLAGS-initfini.s): Remove
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variable.
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* sysdeps/powerpc/powerpc64/Makefile (CFLAGS-initfini.s):
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Likewise.
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2012-02-20 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/unix/sysv/linux/bits/epoll.h: New file.
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49
csu/Makefile
49
csu/Makefile
@ -20,8 +20,7 @@
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# consists of the startfile, built from start.c and installed as crt0.o
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# (traditionally) or crt1.o (for ELF). In ELF we also install crti.o and
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# crtn.o, special "initializer" and "finalizer" files used in the link
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# to make the .init and .fini sections work right; both these files are
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# built (in an arcane manner) from initfini.c.
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# to make the .init and .fini sections work right.
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subdir := csu
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@ -38,7 +37,7 @@ omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
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b$(start-installed-name) $(csu-dummies) \
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S$(start-installed-name))
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install-lib = $(start-installed-name) g$(start-installed-name) $(csu-dummies)
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distribute = initfini.c gmon-start.c start.c defs.awk \
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distribute = gmon-start.c start.c \
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abi-note.S init.c c not-cancel.h
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generated = version-info.h
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before-compile = $(objpfx)version-info.h
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@ -80,50 +79,6 @@ crtstuff = crti crtn
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install-lib += $(crtstuff:=.o)
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extra-objs += $(crtstuff:=.o)
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# Conditionals on the existence of a sysdeps version of crti.S are
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# temporary until all targets either have such a file or have been
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# removed, after which the old approach of postprocessing compiler
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# output will be removed.
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ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
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generated += $(crtstuff:=.S) initfini.s defs.h
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omit-deps += $(crtstuff)
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# Special rules for the building of crti.o and crtn.o
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$(crtstuff:%=$(objpfx)%.o): %.o: %.S $(objpfx)defs.h
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$(compile.S) -g0 $(ASFLAGS-.os) -o $@
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CFLAGS-initfini.s = -g0 -fPIC -fno-inline-functions $(fno-unit-at-a-time)
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vpath initfini.c $(sysdirs)
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$(objpfx)initfini.s: initfini.c $(before-compile)
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$(compile.c) -S $(CFLAGS-initfini.s) -finhibit-size-directive \
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$(patsubst -f%,-fno-%,$(exceptions)) -o $@
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# We only have one kind of startup code files. Static binaries and
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# shared libraries are build using the PIC version.
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$(objpfx)crti.S: $(objpfx)initfini.s
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sed -n -e '1,/@HEADER_ENDS/p' \
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-e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
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-e '/@TRAILER_BEGINS/,$$p' $< > $@
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$(objpfx)crtn.S: $(objpfx)initfini.s
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sed -n -e '1,/@HEADER_ENDS/p' \
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-e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
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-e '/@TRAILER_BEGINS/,$$p' $< > $@
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# These explicit rules are necessary when the $(objpfx) subdirectory
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# did not exist at the time make considered the implicit rules using it.
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# This comes up with a fresh build using no_deps=t.
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$(patsubst %,$(objpfx)crt%.o,i n): %.o: %.S
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$(objpfx)defs.h: $(objpfx)initfini.s
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sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
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$(AWK) -f defs.awk > $@
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endif
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extra-objs += abi-note.o init.o
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asm-CPPFLAGS += -I$(objpfx).
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27
csu/defs.awk
27
csu/defs.awk
@ -1,27 +0,0 @@
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/^[ ]*\.endp/ { need_endp = 1 }
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/^[ ]*\.end/ { need_end = 1 }
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/^[ ]*\.align/ { if($2 > max) max = $2; }
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END {
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if(need_endp)
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{
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print "#define END_INIT .endp _init";
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print "#define END_FINI .endp _fini";
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} else if(need_end)
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{
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print "#define END_INIT .end _init";
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print "#define END_FINI .end _fini";
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}
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else
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{
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print "#define END_INIT";
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print "#define END_FINI";
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}
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if(max)
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print "#define ALIGN .align", max;
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else
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print "#define ALIGN";
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print "#include <libc-symbols.h>";
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print "weak_extern (__gmon_start__)";
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}
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@ -1,3 +1,21 @@
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2012-02-21 Joseph Myers <joseph@codesourcery.com>
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[BZ #13695]
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* Makefile (generated): Remove crti.S, crtn.S, defs.h and
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pt-initfini.s.
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[crti.S not in sysdirs] (omit-deps): Do not append.
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[crti.S not in sysdirs] (CFLAGS-pt-initfini.s): Remove variable.
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[crti.S not in sysdirs] (pt-initfini.c): Remove vpath directive.
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[crti.S not in sysdirs] ($(objpfx)crti.S): Remove rule.
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[crti.S not in sysdirs] ($(objpfx)crtn.S): Likewise.
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[crti.S not in sysdirs] ($(objpfx)defs.h): Likewise.
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[crti.S not in sysdirs] ($(objpfx)crti.o): Likewise.
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[crti.S not in sysdirs] ($(objpfx)crtn.o): Likewise.
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[crti.S in sysdirs] (extra-objs): Append unconditionally.
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[crti.S in sysdirs] ($(objpfx)crti.o): Define rule
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unconditionally.
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* sysdeps/pthread/pt-initfini.c: Remove file.
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2012-02-16 Richard Henderson <rth@twiddle.net>
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* nptl/sysdeps/unix/sysv/linux/s390/s390-32/pt-initfini.c: Remove file.
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@ -334,25 +334,12 @@ ifneq (,$(patsubst .,,$(multidir)))
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generated-dirs := $(firstword $(subst /, , $(multidir)))
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crti-objs += $(multidir)/crti.o
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crtn-objs += $(multidir)/crtn.o
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# Conditionals on the existence of a sysdeps version of crti.S are
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# temporary until all targets either have such a file or have been
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# removed, after which the old approach of postprocessing compiler
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# output will be removed.
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ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
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omit-deps += $(multidir)/crti $(multidir)/crtn
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endif
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$(objpfx)$(multidir):
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mkdir -p $@
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endif
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extra-objs += $(crti-objs) $(crtn-objs)
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ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
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omit-deps += crti crtn
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CFLAGS-pt-initfini.s = -g0 -fPIC -fno-inline-functions $(fno-unit-at-a-time)
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else
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extra-objs += pt-crti.o
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endif
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endif
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CFLAGS-flockfile.c = -D_IO_MTSAFE_IO
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CFLAGS-ftrylockfile.c = -D_IO_MTSAFE_IO
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@ -551,47 +538,13 @@ $(addprefix $(objpfx),$(tests) $(test-srcs)): $(objpfx)libpthread.a
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endif
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ifeq ($(build-shared),yes)
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ifeq (,$(wildcard $(sysdirs:%=%/crti.S)))
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vpath pt-initfini.c $(sysdirs)
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$(objpfx)pt-initfini.s: pt-initfini.c
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$(compile.c) -S $(CFLAGS-pt-initfini.s) -finhibit-size-directive \
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$(patsubst -f%,-fno-%,$(exceptions)) -o $@
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endif
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$(objpfx)tst-cleanup0.out: /dev/null $(objpfx)tst-cleanup0
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$(make-test-out) 2>&1 | cmp - tst-cleanup0.expect > $@
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ifneq (,$(wildcard $(sysdirs:%=%/crti.S)))
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$(objpfx)crti.o: $(objpfx)pt-crti.o
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ln -f $< $@
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else
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# We only have one kind of startup code files. Static binaries and
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# shared libraries are build using the PIC version.
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$(objpfx)crti.S: $(objpfx)pt-initfini.s
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sed -n -e '1,/@HEADER_ENDS/p' \
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-e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
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-e '/@TRAILER_BEGINS/,$$p' $< > $@
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$(objpfx)crtn.S: $(objpfx)pt-initfini.s
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sed -n -e '1,/@HEADER_ENDS/p' \
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-e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
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-e '/@TRAILER_BEGINS/,$$p' $< > $@
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$(objpfx)defs.h: $(objpfx)pt-initfini.s
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sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
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$(AWK) -f ../csu/defs.awk > $@
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$(objpfx)crti.o: $(objpfx)crti.S $(objpfx)defs.h
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$(compile.S) -g0 $(ASFLAGS-.os) -o $@
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$(objpfx)crtn.o: $(objpfx)crtn.S $(objpfx)defs.h
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$(compile.S) -g0 $(ASFLAGS-.os) -o $@
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endif
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ifneq ($(multidir),.)
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$(objpfx)$(multidir)/crti.o: $(objpfx)crti.o $(objpfx)$(multidir)/
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ln -f $< $@
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@ -600,7 +553,7 @@ $(objpfx)$(multidir)/crtn.o: $(objpfx)crtn.o $(objpfx)$(multidir)/
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ln -f $< $@
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endif
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generated += crti.S crtn.S defs.h pt-initfini.s libpthread_nonshared.a \
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generated += libpthread_nonshared.a \
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multidir.mk tst-atfork2.mtrace tst-cancel-wrappers.out \
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tst-tls6.out
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@ -1,124 +0,0 @@
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/* Special .init and .fini section support. Linuxthread version.
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Copyright (C) 1995,1996,1997,2000,2001,2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The Library General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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The GNU C Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <http://www.gnu.org/licenses/>. */
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/* This file is compiled into assembly code which is then munged by a sed
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script into two files: crti.s and crtn.s.
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* crti.s puts a function prologue at the beginning of the
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.init and .fini sections and defines global symbols for
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those addresses, so they can be called as functions.
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* crtn.s puts the corresponding function epilogues
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in the .init and .fini sections. */
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#include <stdlib.h>
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/* We use embedded asm for .section unconditionally, as this makes it
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easier to insert the necessary directives into crtn.S. */
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#define SECTION(x) asm (".section " x )
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/* Embed an #include to pull in the alignment and .end directives. */
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asm ("\n#include \"defs.h\"");
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/* The initial common code ends here. */
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asm ("\n/*@HEADER_ENDS*/");
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/* To determine whether we need .end and .align: */
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asm ("\n/*@TESTS_BEGIN*/");
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extern void dummy (void (*foo) (void));
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void
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dummy (void (*foo) (void))
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{
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if (foo)
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(*foo) ();
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}
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asm ("\n/*@TESTS_END*/");
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/* The beginning of _init: */
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asm ("\n/*@_init_PROLOG_BEGINS*/");
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static void
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call_initialize_minimal (void)
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{
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extern void __pthread_initialize_minimal_internal (void)
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__attribute ((visibility ("hidden")));
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__pthread_initialize_minimal_internal ();
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}
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SECTION (".init");
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extern void __attribute__ ((section (".init"))) _init (void);
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void
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_init (void)
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{
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/* The very first thing we must do is to set up the registers. */
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call_initialize_minimal ();
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asm ("ALIGN");
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asm("END_INIT");
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/* Now the epilog. */
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asm ("\n/*@_init_PROLOG_ENDS*/");
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asm ("\n/*@_init_EPILOG_BEGINS*/");
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SECTION(".init");
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}
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asm ("END_INIT");
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/* End of the _init epilog, beginning of the _fini prolog. */
|
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asm ("\n/*@_init_EPILOG_ENDS*/");
|
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asm ("\n/*@_fini_PROLOG_BEGINS*/");
|
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|
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SECTION (".fini");
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extern void __attribute__ ((section (".fini"))) _fini (void);
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void
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_fini (void)
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{
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|
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/* End of the _fini prolog. */
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asm ("ALIGN");
|
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asm ("END_FINI");
|
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asm ("\n/*@_fini_PROLOG_ENDS*/");
|
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|
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{
|
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/* Let GCC know that _fini is not a leaf function by having a dummy
|
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function call here. We arrange for this call to be omitted from
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either crt file. */
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extern void i_am_not_a_leaf (void);
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i_am_not_a_leaf ();
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}
|
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|
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/* Beginning of the _fini epilog. */
|
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asm ("\n/*@_fini_EPILOG_BEGINS*/");
|
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SECTION (".fini");
|
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}
|
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asm ("END_FINI");
|
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|
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/* End of the _fini epilog. Any further generated assembly (e.g. .ident)
|
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is shared between both crt files. */
|
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asm ("\n/*@_fini_EPILOG_ENDS*/");
|
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asm ("\n/*@TRAILER_BEGINS*/");
|
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|
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/* End of file. */
|
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@ -1,138 +0,0 @@
|
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/* Special .init and .fini section support.
|
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Copyright (C) 1995, 1996, 1997, 2000 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
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
In addition to the permissions in the GNU Lesser General Public
|
||||
License, the Free Software Foundation gives you unlimited
|
||||
permission to link the compiled version of this file with other
|
||||
programs, and to distribute those programs without any restriction
|
||||
coming from the use of this file. (The GNU Lesser General Public
|
||||
License restrictions do apply in other respects; for example, they
|
||||
cover modification of the file, and distribution when not linked
|
||||
into another program.)
|
||||
|
||||
Note that people who make modified versions of this file are not
|
||||
obligated to grant this special exception for their modified
|
||||
versions; it is their choice whether to do so. The GNU Lesser
|
||||
General Public License gives permission to release a modified
|
||||
version without this exception; this exception also makes it
|
||||
possible to release a modified version which carries forward this
|
||||
exception.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
/* This file is compiled into assembly code which is then munged by a sed
|
||||
script into two files: crti.s and crtn.s.
|
||||
|
||||
* crti.s puts a function prologue at the beginning of the
|
||||
.init and .fini sections and defines global symbols for
|
||||
those addresses, so they can be called as functions.
|
||||
|
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* crtn.s puts the corresponding function epilogues
|
||||
in the .init and .fini sections. */
|
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|
||||
#include <stdlib.h>
|
||||
|
||||
/* We use embedded asm for .section unconditionally, as this makes it
|
||||
easier to insert the necessary directives into crtn.S. */
|
||||
#define SECTION(x) asm (".section " x )
|
||||
|
||||
/* Embed an #include to pull in the alignment and .end directives. */
|
||||
asm ("\n#include \"defs.h\"");
|
||||
|
||||
/* The initial common code ends here. */
|
||||
asm ("\n/*@HEADER_ENDS*/");
|
||||
|
||||
/* To determine whether we need .end and .align: */
|
||||
asm ("\n/*@TESTS_BEGIN*/");
|
||||
extern void dummy (void (*foo) (void));
|
||||
void
|
||||
dummy (void (*foo) (void))
|
||||
{
|
||||
if (foo)
|
||||
(*foo) ();
|
||||
}
|
||||
asm ("\n/*@TESTS_END*/");
|
||||
|
||||
/* The beginning of _init: */
|
||||
asm ("\n/*@_init_PROLOG_BEGINS*/");
|
||||
|
||||
static void
|
||||
call_gmon_start(void)
|
||||
{
|
||||
extern void __gmon_start__ (void) __attribute__ ((weak)); /*weak_extern (__gmon_start__);*/
|
||||
void (*gmon_start) (void) = __gmon_start__;
|
||||
|
||||
if (gmon_start)
|
||||
gmon_start ();
|
||||
}
|
||||
|
||||
SECTION (".init");
|
||||
extern void __attribute__ ((section (".init"))) _init (void);
|
||||
void
|
||||
_init (void)
|
||||
{
|
||||
/* We cannot use the normal constructor mechanism in gcrt1.o because it
|
||||
appears before crtbegin.o in the link, so the header elt of .ctors
|
||||
would come after the elt for __gmon_start__. One approach is for
|
||||
gcrt1.o to reference a symbol which would be defined by some library
|
||||
module which has a constructor; but then user code's constructors
|
||||
would come first, and not be profiled. */
|
||||
call_gmon_start ();
|
||||
|
||||
asm ("ALIGN");
|
||||
asm("END_INIT");
|
||||
/* Now the epilog. */
|
||||
asm ("\n/*@_init_PROLOG_ENDS*/");
|
||||
asm ("\n/*@_init_EPILOG_BEGINS*/");
|
||||
SECTION(".init");
|
||||
}
|
||||
asm ("END_INIT");
|
||||
|
||||
/* End of the _init epilog, beginning of the _fini prolog. */
|
||||
asm ("\n/*@_init_EPILOG_ENDS*/");
|
||||
asm ("\n/*@_fini_PROLOG_BEGINS*/");
|
||||
|
||||
SECTION (".fini");
|
||||
extern void __attribute__ ((section (".fini"))) _fini (void);
|
||||
void
|
||||
_fini (void)
|
||||
{
|
||||
|
||||
/* End of the _fini prolog. */
|
||||
asm ("ALIGN");
|
||||
asm ("END_FINI");
|
||||
asm ("\n/*@_fini_PROLOG_ENDS*/");
|
||||
|
||||
{
|
||||
/* Let GCC know that _fini is not a leaf function by having a dummy
|
||||
function call here. We arrange for this call to be omitted from
|
||||
either crt file. */
|
||||
extern void i_am_not_a_leaf (void);
|
||||
i_am_not_a_leaf ();
|
||||
}
|
||||
|
||||
/* Beginning of the _fini epilog. */
|
||||
asm ("\n/*@_fini_EPILOG_BEGINS*/");
|
||||
SECTION (".fini");
|
||||
}
|
||||
asm ("END_FINI");
|
||||
|
||||
/* End of the _fini epilog. Any further generated assembly (e.g. .ident)
|
||||
is shared between both crt files. */
|
||||
asm ("\n/*@_fini_EPILOG_ENDS*/");
|
||||
asm ("\n/*@TRAILER_BEGINS*/");
|
||||
|
||||
/* End of file. */
|
||||
@ -23,10 +23,6 @@ pic-ccflag = -fpic
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),csu)
|
||||
# The initfini generation code doesn't work in the presence of -fPIC, so
|
||||
# we use -fpic instead which is much better.
|
||||
CFLAGS-initfini.s += -fpic -O1
|
||||
|
||||
# There is no benefit to using sdata for these objects, and the user
|
||||
# of the library should be able to control what goes into sdata.
|
||||
CFLAGS-init.o = -G0
|
||||
|
||||
@ -28,9 +28,6 @@ no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \
|
||||
ifeq ($(subdir),csu)
|
||||
sysdep_routines += hp-timing
|
||||
elide-routines.os += hp-timing
|
||||
# The initfini generation code doesn't work in the presence of -fPIC, so
|
||||
# we use -fpic instead which is much better.
|
||||
CFLAGS-initfini.s += -fpic -O1
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),elf)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user