Simplify tilegx sysdeps folder

With tilepro support removal we can now simplify internal tile support by
moving the directory structure to avoid the unnecessary directory levels
in tile/tilegx both on generic and linux folders.

Checked with a build for tilegx-linux-gnu and tilegx-linux-gnu-32 with
and without the patch, there is no difference in generated binary with
a dissassemble.

	* stdlib/bug-getcontext.c (do_test): Remove tilepro mention in
	comment.
	* sysdeps/tile/preconfigure: Remove tilegx folder.
	* sysdeps/tile/tilegx/Implies: Move definitions to ...
	* sysdeps/tile/Implies: ... here.
	* sysdeps/tile/tilegx/Makefile: Move rules to ...
	* sysdeps/tile/Makefile: ... here.
	* sysdeps/tile/tilegx/atomic-machine.h: Move definitions to ...
	* sysdeps/tile/atomic-machine.h: ... here.  Add include guards.
	* sysdeps/tile/tilegx/bits/wordsize.h: Move to ...
	* sysdeps/tile/bits/wordsize.h: ... here.
	* sysdeps/tile/tilegx/*: Move to ...
	* sysdeps/tile/*: ... here.
	* sysdeps/tile/tilegx/tilegx32/Implies: Move to ...
	* sysdeps/tile/tilegx32/Implies: ... here.
	* sysdeps/tile/tilegx/tilegx64/Implies: Move to ...
	* sysdeps/tile/tilegx64/Implies: ... here.
	* sysdeps/unix/sysv/linux/tile/tilegx/Makefile: Move definitions
	to ...
	* sysdeps/unix/sysv/linux/tile/Makefile: ... here.
	* sysdeps/unix/sysv/linux/tile/tilegx/*: Move to ...
	* sysdeps/unix/sysv/linux/tile/*: ... here.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/*: Move to ...
	* sysdeps/unix/sysv/linux/tile/tilegx32/*: ... here.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/*: Move to ...
	* sysdeps/unix/sysv/linux/tile/tilegx64/*: ... here.

ChangeLog

@@ -1,5 +1,32 @@
 2017-12-20  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* stdlib/bug-getcontext.c (do_test): Remove tilepro mention in
+	comment.
+	* sysdeps/tile/preconfigure: Remove tilegx folder.
+	* sysdeps/tile/tilegx/Implies: Move definitions to ...
+	* sysdeps/tile/Implies: ... here.
+	* sysdeps/tile/tilegx/Makefile: Move rules to ...
+	* sysdeps/tile/Makefile: ... here.
+	* sysdeps/tile/tilegx/atomic-machine.h: Move definitions to ...
+	* sysdeps/tile/atomic-machine.h: ... here.  Add include guards.
+	* sysdeps/tile/tilegx/bits/wordsize.h: Move to ...
+	* sysdeps/tile/bits/wordsize.h: ... here.
+	* sysdeps/tile/tilegx/*: Move to ...
+	* sysdeps/tile/*: ... here.
+	* sysdeps/tile/tilegx/tilegx32/Implies: Move to ...
+	* sysdeps/tile/tilegx32/Implies: ... here.
+	* sysdeps/tile/tilegx/tilegx64/Implies: Move to ...
+	* sysdeps/tile/tilegx64/Implies: ... here.
+	* sysdeps/unix/sysv/linux/tile/tilegx/Makefile: Move definitions
+	to ...
+	* sysdeps/unix/sysv/linux/tile/Makefile: ... here.
+	* sysdeps/unix/sysv/linux/tile/tilegx/*: Move to ...
+	* sysdeps/unix/sysv/linux/tile/*: ... here.
+	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/*: Move to ...
+	* sysdeps/unix/sysv/linux/tile/tilegx32/*: ... here.
+	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/*: Move to ...
+	* sysdeps/unix/sysv/linux/tile/tilegx64/*: ... here.
+
 	* README: Remove tilepro-*-linux-gnu from supported architecture.
 	* scripts/build-many-glibcs.py: Likewise.
 	* sysdeps/tile/__tls_get_addr.S (__tls_get_addr): Likewise.

stdlib/bug-getcontext.c

@@ -50,7 +50,7 @@ do_test (void)
   printf ("\nDone with getcontext()!\n");
   fflush (NULL);
 
-  /* On nios2 and tilepro, GCC 5 warns that except_mask may be used
+  /* On nios2 GCC 5 warns that except_mask may be used
      uninitialized.  Because it is always initialized and nothing in
      this test ever calls setcontext (a setcontext call could result
      in local variables being clobbered on the second return from

sysdeps/tile/Implies

@@ -1,3 +1,4 @@
 ieee754/soft-fp
+ieee754/dbl-64/wordsize-64
 ieee754/dbl-64
 ieee754/flt-32

sysdeps/tile/Makefile

@@ -1,3 +1,39 @@
+include $(common-objpfx)cflags-mcmodel-large.mk
+
+# Check for gcc to support the command-line switch, and for
+# binutils to support the hwN_plt() assembly operators and relocations.
+$(common-objpfx)cflags-mcmodel-large.mk: $(common-objpfx)config.make
+	mcmodel=no; \
+	(echo 'int main() { return getuid(); }' | \
+	 $(CC) -o /dev/null -xc - -mcmodel=large -fpic) && mcmodel=yes; \
+	echo "cflags-mcmodel-large = $$mcmodel" > $@
+
+ifeq (yes,$(cflags-mcmodel-large))
+
+ifeq ($(subdir),csu)
+# elf-init.c is in libc_nonshared.o (the end of the shared object) but
+# must reach the _init symbol at the very start of the shared object.
+CFLAGS-elf-init.c += -mcmodel=large
+
+# __gmon_start__ is at the very start of the shared object when linked
+# with profiling, but calls to libc.so via the PLT at the very end.
+CFLAGS-gmon-start.c += -mcmodel=large
+endif
+
+else
+
+# Don't try to compile assembly code with hwN_plt() directives if the
+# toolchain doesn't support -mcmodel=large.
+ifeq ($(subdir),csu)
+CPPFLAGS-start.S += -DNO_PLT_PCREL
+CPPFLAGS-crti.S += -DNO_PLT_PCREL
+endif
+ifeq ($(subdir),nptl)
+CPPFLAGS-pt-crti.S += -DNO_PLT_PCREL
+endif
+
+endif
+
 # We don't support long doubles as a distinct type.  We don't need to set
 # this variable; it's here mostly for documentational purposes.
 

sysdeps/tile/atomic-machine.h

@@ -16,20 +16,12 @@
    License along with the GNU C Library.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
-/* The sub-architecture headers provide definitions for these macros
+#ifndef _ATOMIC_MACHINE_H
-   that work for "int" and "long" size values only:
+#define _ATOMIC_MACHINE_H       1
-
-   atomic_compare_and_exchange_val_acq()
-   atomic_exchange_acq()
-   atomic_exchange_and_add()
-   atomic_and_val()
-   atomic_or_val()
-   atomic_decrement_if_positive() [tilegx only]
-
-   Here we provide generic definitions true for all Tilera chips.  */
 
 #include <stdint.h>
 #include <features.h>
+#include <arch/spr_def.h>
 
 typedef int32_t atomic32_t;
 typedef uint32_t uatomic32_t;
@@ -46,6 +38,41 @@ typedef uintptr_t uatomicptr_t;
 typedef intmax_t atomic_max_t;
 typedef uintmax_t uatomic_max_t;
 
+#ifdef _LP64
+# define __HAVE_64B_ATOMICS 1
+#else
+/* tilegx32 does have 64-bit atomics, but assumptions in the semaphore
+   code mean that unaligned 64-bit atomics will be used if this symbol
+   is true, and unaligned atomics are not supported on tile.  */
+# define __HAVE_64B_ATOMICS 0
+#endif
+
+#define USE_ATOMIC_COMPILER_BUILTINS 0
+#define ATOMIC_EXCHANGE_USES_CAS 0
+
+/* Pick appropriate 8- or 4-byte instruction. */
+#define __atomic_update(mem, v, op)                                     \
+  ((__typeof (*(mem))) (__typeof (*(mem) - *(mem)))                     \
+   ((sizeof (*(mem)) == 8) ?                                            \
+    __insn_##op ((void *) (mem), (int64_t) (__typeof((v) - (v))) (v)) : \
+    (sizeof (*(mem)) == 4) ?                                            \
+    __insn_##op##4 ((void *) (mem), (int32_t) (__typeof ((v) - (v))) (v)) : \
+    __atomic_error_bad_argument_size()))
+
+#define atomic_compare_and_exchange_val_acq(mem, n, o)                  \
+  ({ __insn_mtspr (SPR_CMPEXCH_VALUE, (int64_t) (__typeof ((o) - (o))) (o)); \
+     __atomic_update (mem, n, cmpexch); })
+#define atomic_exchange_acq(mem, newvalue) \
+  __atomic_update (mem, newvalue, exch)
+#define atomic_exchange_and_add(mem, value) \
+  __atomic_update (mem, value, fetchadd)
+#define atomic_and_val(mem, mask) \
+  __atomic_update (mem, mask, fetchand)
+#define atomic_or_val(mem, mask) \
+  __atomic_update (mem, mask, fetchor)
+#define atomic_decrement_if_positive(mem) \
+  __atomic_update (mem, -1, fetchaddgez)
+
 /* Barrier macro. */
 #define atomic_full_barrier() __sync_synchronize()
 
@@ -79,3 +106,5 @@ typedef uintmax_t uatomic_max_t;
  */
 extern int __atomic_error_bad_argument_size(void)
   __attribute__ ((warning ("bad sizeof atomic argument")));
+
+#endif /* _ATOMIC_MACHINE_H  */

sysdeps/tile/preconfigure

@@ -3,8 +3,8 @@ case "$machine" in
     tilegx*)
 	base_machine=tile
 	if $CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | grep -q __LP64__; then
-	    machine=tile/tilegx/tilegx64
+	    machine=tile/tilegx64
 	else
-	    machine=tile/tilegx/tilegx32
+	    machine=tile/tilegx32
 	fi ;;
 esac

sysdeps/tile/tilegx/Implies

@@ -1 +0,0 @@
-ieee754/dbl-64/wordsize-64

sysdeps/tile/tilegx/Makefile

@@ -1,35 +0,0 @@
-include $(common-objpfx)cflags-mcmodel-large.mk
-
-# Check for gcc to support the command-line switch, and for
-# binutils to support the hwN_plt() assembly operators and relocations.
-$(common-objpfx)cflags-mcmodel-large.mk: $(common-objpfx)config.make
-	mcmodel=no; \
-	(echo 'int main() { return getuid(); }' | \
-	 $(CC) -o /dev/null -xc - -mcmodel=large -fpic) && mcmodel=yes; \
-	echo "cflags-mcmodel-large = $$mcmodel" > $@
-
-ifeq (yes,$(cflags-mcmodel-large))
-
-ifeq ($(subdir),csu)
-# elf-init.c is in libc_nonshared.o (the end of the shared object) but
-# must reach the _init symbol at the very start of the shared object.
-CFLAGS-elf-init.c += -mcmodel=large
-
-# __gmon_start__ is at the very start of the shared object when linked
-# with profiling, but calls to libc.so via the PLT at the very end.
-CFLAGS-gmon-start.c += -mcmodel=large
-endif
-
-else
-
-# Don't try to compile assembly code with hwN_plt() directives if the
-# toolchain doesn't support -mcmodel=large.
-ifeq ($(subdir),csu)
-CPPFLAGS-start.S += -DNO_PLT_PCREL
-CPPFLAGS-crti.S += -DNO_PLT_PCREL
-endif
-ifeq ($(subdir),nptl)
-CPPFLAGS-pt-crti.S += -DNO_PLT_PCREL
-endif
-
-endif

sysdeps/tile/tilegx/atomic-machine.h

@@ -1,61 +0,0 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _ATOMIC_MACHINE_H
-#define _ATOMIC_MACHINE_H	1
-
-#include <arch/spr_def.h>
-
-#ifdef _LP64
-# define __HAVE_64B_ATOMICS 1
-#else
-/* tilegx32 does have 64-bit atomics, but assumptions in the semaphore
-   code mean that unaligned 64-bit atomics will be used if this symbol
-   is true, and unaligned atomics are not supported on tile.  */
-# define __HAVE_64B_ATOMICS 0
-#endif
-
-#define USE_ATOMIC_COMPILER_BUILTINS 0
-#define ATOMIC_EXCHANGE_USES_CAS 0
-
-/* Pick appropriate 8- or 4-byte instruction. */
-#define __atomic_update(mem, v, op)                                     \
-  ((__typeof (*(mem))) (__typeof (*(mem) - *(mem)))                     \
-   ((sizeof (*(mem)) == 8) ?                                            \
-    __insn_##op ((void *) (mem), (int64_t) (__typeof((v) - (v))) (v)) : \
-    (sizeof (*(mem)) == 4) ?                                            \
-    __insn_##op##4 ((void *) (mem), (int32_t) (__typeof ((v) - (v))) (v)) : \
-    __atomic_error_bad_argument_size()))
-
-#define atomic_compare_and_exchange_val_acq(mem, n, o)                  \
-  ({ __insn_mtspr (SPR_CMPEXCH_VALUE, (int64_t) (__typeof ((o) - (o))) (o)); \
-     __atomic_update (mem, n, cmpexch); })
-#define atomic_exchange_acq(mem, newvalue) \
-  __atomic_update (mem, newvalue, exch)
-#define atomic_exchange_and_add(mem, value) \
-  __atomic_update (mem, value, fetchadd)
-#define atomic_and_val(mem, mask) \
-  __atomic_update (mem, mask, fetchand)
-#define atomic_or_val(mem, mask) \
-  __atomic_update (mem, mask, fetchor)
-#define atomic_decrement_if_positive(mem) \
-  __atomic_update (mem, -1, fetchaddgez)
-
-#include <sysdeps/tile/atomic-machine.h>
-
-#endif /* atomic-machine.h */

sysdeps/tile/tilegx32/Implies

@@ -1,3 +1,2 @@
-tile/tilegx
 tile
 wordsize-32

sysdeps/tile/tilegx64/Implies

@@ -1,3 +1,2 @@
-tile/tilegx
 tile
 wordsize-64

sysdeps/unix/sysv/linux/tile/Makefile

@@ -1,3 +1,8 @@
+# Provide biarch definitions.
+abi-variants := 64 32
+abi-64-condition := __WORDSIZE == 64
+abi-32-condition := __WORDSIZE == 32
+
 ifeq ($(subdir),misc)
 
 # <sys/reg.h> provides something like x86 compatibility.

sysdeps/unix/sysv/linux/tile/configure

@@ -4,7 +4,7 @@
 ldd_rewrite_script=$dir/ldd-rewrite.sed
 
 case $machine in
-tile/tilegx/tilegx32)
+tile/tilegx32)
   test -n "$libc_cv_slibdir" ||
 case "$prefix" in
 /usr | /usr/)

sysdeps/unix/sysv/linux/tile/configure.ac

@@ -4,7 +4,7 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 ldd_rewrite_script=$dir/ldd-rewrite.sed
 
 case $machine in
-tile/tilegx/tilegx32)
+tile/tilegx32)
   LIBC_SLIBDIR_RTLDDIR([lib32], [lib32])
   ;;
 esac

sysdeps/unix/sysv/linux/tile/tilegx/Makefile

@@ -1,4 +0,0 @@
-# Provide biarch definitions.
-abi-variants := 64 32
-abi-64-condition := __WORDSIZE == 64
-abi-32-condition := __WORDSIZE == 32

sysdeps/unix/sysv/linux/tile/tilegx32/Implies

@@ -1,4 +1,3 @@
-unix/sysv/linux/tile/tilegx
 unix/sysv/linux/tile
 unix/sysv/linux/generic/wordsize-32
 unix/sysv/linux/generic

sysdeps/unix/sysv/linux/tile/tilegx64/Implies

@@ -1,4 +1,3 @@
-unix/sysv/linux/tile/tilegx
 unix/sysv/linux/tile
 unix/sysv/linux/generic
 unix/sysv/linux/wordsize-64