nptl: Remove remaining code from libpthread

Only the placeholder compatibility symbols are left now.

The __errno_location symbol was removed (moved) using
scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

7 files changed, 11 insertions, 195 deletions

diff --git a/nptl/Makefile b/nptl/Makefile
index a6e3b615a8..64cd0dcbf6 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -207,16 +207,8 @@ routines = \
 shared-only-routines = forward
 static-only-routines = pthread_atfork
 
-libpthread-routines = \
-  libpthread-compat \
-  nptl-init \
-  pt-interp \
-  version \
-
-libpthread-shared-only-routines = \
-  pt-allocrtsig \
-  pt-interp \
-  version \
+libpthread-routines = libpthread-compat
+libpthread-shared-only-routines = libpthread-compat
 
 # Since cancellation handling is in large parts handled using exceptions
 # we have to compile some files with exception handling enabled, some
@@ -382,7 +374,7 @@ else
 tests-printers-libs := $(static-thread-library)
 endif
 
-LDFLAGS-pthread.so = -Wl,--enable-new-dtags,-z,nodelete,-z,initfirst
+LDFLAGS-pthread.so = -Wl,--enable-new-dtags,-z,nodelete
 
 tests += tst-cancelx7 tst-cancelx17
 
@@ -432,17 +424,6 @@ $(objpfx)multidir.mk: $(common-objpfx)config.make
 	echo "multidir := $$dir" > $@T
 	mv -f $@T $@
 
-crti-objs := crti.o
-crtn-objs := crtn.o
-ifneq (,$(patsubst .,,$(multidir)))
-generated-dirs += $(firstword $(subst /, , $(multidir)))
-crti-objs += $(multidir)/crti.o
-crtn-objs += $(multidir)/crtn.o
-$(objpfx)$(multidir):
-	mkdir -p $@
-endif
-extra-objs += $(crti-objs) $(crtn-objs)
-extra-objs += pt-crti.o
 endif
 
 CFLAGS-ftrylockfile.c += $(libio-mtsafe)
@@ -577,11 +558,6 @@ $(objpfx)tst-cancelx17: $(librt)
 LDLIBS-tst-cancel24 = -Wl,--no-as-needed -lstdc++
 LDLIBS-tst-cancel24-static = $(LDLIBS-tst-cancel24)
 
-extra-B-pthread.so = -B$(common-objpfx)nptl/
-$(objpfx)libpthread.so: $(addprefix $(objpfx),$(crti-objs) $(crtn-objs))
-$(objpfx)libpthread.so: +preinit += $(addprefix $(objpfx),$(crti-objs))
-$(objpfx)libpthread.so: +postinit += $(addprefix $(objpfx),$(crtn-objs))
-
 # Make sure we link with the thread library.
 ifeq ($(build-shared),yes)
 $(addprefix $(objpfx), \
@@ -601,23 +577,7 @@ $(addprefix $(objpfx),$(tests) $(test-srcs)): $(objpfx)libpthread.a
 endif
 
 ifeq ($(build-shared),yes)
-$(objpfx)crti.o: $(objpfx)pt-crti.o
-	ln -f $< $@
-
-ifneq ($(multidir),.)
-$(objpfx)$(multidir)/crti.o: $(objpfx)crti.o $(objpfx)$(multidir)/
-	ln -f $< $@
-
-$(objpfx)$(multidir)/crtn.o: $(objpfx)crtn.o $(objpfx)$(multidir)/
-	ln -f $< $@
-endif
-
 generated += multidir.mk tst-tls6.out
-
-# Give libpthread.so an entry point and make it directly runnable itself.
-LDFLAGS-pthread.so += -e __nptl_main
-# pt-interp.c exists just to get the runtime linker path into libpthread.so.
-$(objpfx)pt-interp.os: $(common-objpfx)runtime-linker.h
 endif
 
 tst-exec4-ARGS = $(host-test-program-cmd)
diff --git a/nptl/Versions b/nptl/Versions
index 0db56bce29..af62a47cca 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -426,17 +426,7 @@ libc {
 
 libpthread {
   GLIBC_2.0 {
-    _Exit;
-    _IO_flockfile;
-    _IO_ftrylockfile;
-    _IO_funlockfile;
-    __errno_location;
-    _exit;
-    flockfile;
-    ftrylockfile;
-    funlockfile;
-    pthread_create;
-    pthread_sigmask;
+    __libpthread_version_placeholder;
   }
 
   GLIBC_2.1 {
diff --git a/nptl/libpthread-compat.c b/nptl/libpthread-compat.c
index 2dcf175f3f..fb336d0685 100644
--- a/nptl/libpthread-compat.c
+++ b/nptl/libpthread-compat.c
@@ -28,6 +28,11 @@ __libpthread_version_placeholder_1 (void)
 }
 #endif
 
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
+compat_symbol (libpthread, __libpthread_version_placeholder_1,
+	       __libpthread_version_placeholder, GLIBC_2_0);
+#endif
+
 #if (SHLIB_COMPAT (libpthread, GLIBC_2_1, GLIBC_2_2))
 compat_symbol (libpthread, __libpthread_version_placeholder_1,
 	       __libpthread_version_placeholder, GLIBC_2_1);
@@ -42,7 +47,7 @@ compat_symbol (libpthread, __libpthread_version_placeholder_1,
 	       __libpthread_version_placeholder, GLIBC_2_1_2);
 #endif
 
-#if SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_2_3) \
+#if SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_3) \
   && ABI_libpthread_GLIBC_2_2 != ABI_libpthread_GLIBC_2_0
 compat_symbol (libpthread, __libpthread_version_placeholder_1,
 	       __libpthread_version_placeholder, GLIBC_2_2);
@@ -88,8 +93,7 @@ compat_symbol (libpthread, __libpthread_version_placeholder_1,
 	       __libpthread_version_placeholder, GLIBC_2_12);
 #endif
 
-#if SHLIB_COMPAT (libpthread, GLIBC_2_18, GLIBC_2_19) \
-  && ABI_libpthread_GLIBC_2_18 != ABI_libpthread_GLIBC_2_0
+#if SHLIB_COMPAT (libpthread, GLIBC_2_18, GLIBC_2_19)
 compat_symbol (libpthread, __libpthread_version_placeholder_1,
 	       __libpthread_version_placeholder, GLIBC_2_18);
 #endif
diff --git a/nptl/nptl-init.c b/nptl/nptl-init.c
deleted file mode 100644
index 5a460aedba..0000000000
--- a/nptl/nptl-init.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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.
-
-   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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <assert.h>
-#include <errno.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/param.h>
-#include <sys/resource.h>
-#include <pthreadP.h>
-#include <atomic.h>
-#include <ldsodefs.h>
-#include <tls.h>
-#include <list.h>
-#include <version.h>
-#include <shlib-compat.h>
-#include <lowlevellock.h>
-#include <futex-internal.h>
-#include <kernel-features.h>
-#include <libc-pointer-arith.h>
-#include <pthread_mutex_conf.h>
-#include <nptl-stack.h>
-
-void
-__pthread_initialize_minimal_internal (void)
-{
-}
-strong_alias (__pthread_initialize_minimal_internal,
-	      __pthread_initialize_minimal)
diff --git a/nptl/pt-crti.S b/nptl/pt-crti.S
deleted file mode 100644
index e618986f98..0000000000
--- a/nptl/pt-crti.S
+++ /dev/null
@@ -1,50 +0,0 @@
-/* Special .init and .fini section support for libpthread.
-   Copyright (C) 2012-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <elf-initfini.h>
-
-/* Arrange for __pthread_initialize_minimal_internal to be called at
-   libpthread startup, instead of conditionally calling
-   __gmon_start__.  */
-
-#if ELF_INITFINI
-# define PREINIT_FUNCTION __pthread_initialize_minimal_internal
-# define PREINIT_FUNCTION_WEAK 0
-
-# include <crti.S>
-#else
-	.section .init_array,"a",%init_array
-	.dc.a __pthread_initialize_minimal_internal
-#endif
diff --git a/nptl/pt-interp.c b/nptl/pt-interp.c
deleted file mode 100644
index ecf1fe70df..0000000000
--- a/nptl/pt-interp.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <elf/interp.c>
diff --git a/nptl/version.c b/nptl/version.c
deleted file mode 100644
index 25e3a0c872..0000000000
--- a/nptl/version.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/* Entry point for libpthread DSO.
-   Copyright (C) 2002-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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.
-
-   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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <unistd.h>
-#include <sysdep.h>
-
-
-static const char banner[] =
-"Native POSIX Threads Library\n\
-Copyright (C) 2021 Free Software Foundation, Inc.\n\
-This is free software; see the source for copying conditions.\n\
-There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
-PARTICULAR PURPOSE.\n"
-"Forced unwind support included.\n"
-;
-
-
-/* This is made the e_entry of libpthread.so by LDFLAGS-pthread.so.  */
-__attribute__ ((noreturn))
-void
-__nptl_main (void)
-{
-  write (STDOUT_FILENO, banner, sizeof banner - 1);
-  _exit (0);
-}