Move tilegx, tilepro, and linux-generic from ports to libc.

I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure.  Beyond the README
update, the move was just

    git mv ports/sysdeps/tile sysdeps/tile
    git mv ports/sysdeps/unix/sysv/linux/tile \
      sysdeps/unix/sysv/linux/tile
    git mv ports/sysdeps/unix/sysv/linux/generic \
      sysdeps/unix/sysv/linux/generic

I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.

8 files changed, 364 insertions, 0 deletions

diff --git a/sysdeps/tile/bits/atomic.h b/sysdeps/tile/bits/atomic.h
new file mode 100644
index 0000000000..2cbb086069
--- /dev/null
+++ b/sysdeps/tile/bits/atomic.h
@@ -0,0 +1,86 @@
+/* Copyright (C) 2011-2014 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/>.  */
+
+/* The sub-architecture headers provide definitions for these macros
+   that work for "int" and "long" size values only:
+
+   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>
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef int64_t atomic64_t;
+typedef uint64_t uatomic64_t;
+typedef int_fast64_t atomic_fast64_t;
+typedef uint_fast64_t uatomic_fast64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+/* Barrier macro. */
+#define atomic_full_barrier() __sync_synchronize()
+
+/* APIs with "release" semantics. */
+#define atomic_compare_and_exchange_val_rel(mem, n, o)          \
+  ({                                                            \
+    atomic_full_barrier ();                                     \
+    atomic_compare_and_exchange_val_acq ((mem), (n), (o));      \
+  })
+#define atomic_compare_and_exchange_bool_rel(mem, n, o)         \
+  ({                                                            \
+    atomic_full_barrier ();                                     \
+    atomic_compare_and_exchange_bool_acq ((mem), (n), (o));     \
+  })
+#define atomic_exchange_rel(mem, n)                             \
+  ({                                                            \
+    atomic_full_barrier ();                                     \
+    atomic_exchange_acq ((mem), (n));                           \
+  })
+
+/* Various macros that should just be synonyms. */
+#define catomic_exchange_and_add atomic_exchange_and_add
+#define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask)))
+#define catomic_and atomic_and
+#define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask)))
+#define catomic_or atomic_or
+
+/* atomic_bit_test_set in terms of atomic_or_val. */
+#define atomic_bit_test_set(mem, bit)                                   \
+  ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit));  \
+    atomic_or_val ((mem), __att0_mask) & __att0_mask; })
+
+/*
+ * This non-existent symbol is called for unsupporrted sizes,
+ * indicating a bug in the caller.
+ */
+extern int __atomic_error_bad_argument_size(void)
+  __attribute__ ((warning ("bad sizeof atomic argument")));
diff --git a/sysdeps/tile/bits/byteswap.h b/sysdeps/tile/bits/byteswap.h
new file mode 100644
index 0000000000..1e1007708b
--- /dev/null
+++ b/sysdeps/tile/bits/byteswap.h
@@ -0,0 +1,37 @@
+/* Copyright (C) 2011-2014 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/>.  */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+#ifndef _BITS_BYTESWAP_H
+#define _BITS_BYTESWAP_H 1
+
+#include <bits/types.h>
+
+/* gcc __builtin_bswap64() can constant-fold, etc, so always use it. */
+#define __bswap_16(x) ((unsigned short)(__builtin_bswap32(x) >> 16))
+#define __bswap_32(x) ((unsigned int)__builtin_bswap32(x))
+#define __bswap_64(x) ((__uint64_t)__builtin_bswap64(x))
+
+#define __bswap_constant_16(x) __bswap_16(x)
+#define __bswap_constant_32(x) __bswap_32(x)
+#define __bswap_constant_64(x) __bswap_64(x)
+
+#endif /* _BITS_BYTESWAP_H */
diff --git a/sysdeps/tile/bits/endian.h b/sysdeps/tile/bits/endian.h
new file mode 100644
index 0000000000..835042a7ac
--- /dev/null
+++ b/sysdeps/tile/bits/endian.h
@@ -0,0 +1,11 @@
+/* Set endianness for tile.  */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#if defined __BIG_ENDIAN__
+# define __BYTE_ORDER __BIG_ENDIAN
+#else
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
diff --git a/sysdeps/tile/bits/fenv.h b/sysdeps/tile/bits/fenv.h
new file mode 100644
index 0000000000..b5092c5039
--- /dev/null
+++ b/sysdeps/tile/bits/fenv.h
@@ -0,0 +1,45 @@
+/* Copyright (C) 2011-2014 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 _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+/* The TILE-Gx hardware does not provide floating-point exception
+   handling, and TILEPro does not support any floating-point operations.  */
+#define FE_ALL_EXCEPT 0
+
+/* TILE-Gx supports only round-to-nearest.  The software
+   floating-point support also acts this way.  */
+enum
+  {
+    __FE_UNDEFINED = 0,
+
+    FE_TONEAREST =
+#define FE_TONEAREST	1
+      FE_TONEAREST,
+  };
+
+/* Type representing exception flags (if there were any).  */
+typedef unsigned int fexcept_t;
+
+/* Type representing floating-point environment.  */
+typedef unsigned int fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV	((const fenv_t *) -1l)
diff --git a/sysdeps/tile/bits/link.h b/sysdeps/tile/bits/link.h
new file mode 100644
index 0000000000..abc3496030
--- /dev/null
+++ b/sysdeps/tile/bits/link.h
@@ -0,0 +1,57 @@
+/* Copyright (C) 2011-2014 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	_LINK_H
+# error "Never include <bits/link.h> directly; use <link.h> instead."
+#endif
+
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+
+/* Registers for entry into PLT.  */
+typedef struct La_tile_regs
+{
+  __uint_reg_t lr_reg[10];
+} La_tile_regs;
+
+/* Return values for calls from PLT.  */
+typedef struct La_tile_retval
+{
+  /* Up to ten registers can be used for a return value (e.g. small struct). */
+  __uint_reg_t lrv_reg[10];
+} La_tile_retval;
+
+
+__BEGIN_DECLS
+
+extern ElfW(Addr) la_tile_gnu_pltenter (ElfW(Sym) *__sym, unsigned int __ndx,
+                                        uintptr_t *__refcook,
+                                        uintptr_t *__defcook,
+                                        La_tile_regs *__regs,
+                                        unsigned int *__flags,
+                                        const char *__symname,
+                                        long int *__framesizep);
+extern unsigned int la_tile_gnu_pltexit (ElfW(Sym) *__sym, unsigned int __ndx,
+                                         uintptr_t *__refcook,
+                                         uintptr_t *__defcook,
+                                         const La_tile_regs *__inregs,
+                                         La_tile_retval *__outregs,
+                                         const char *__symname);
+
+__END_DECLS
diff --git a/sysdeps/tile/bits/mathdef.h b/sysdeps/tile/bits/mathdef.h
new file mode 100644
index 0000000000..d043b4af5f
--- /dev/null
+++ b/sysdeps/tile/bits/mathdef.h
@@ -0,0 +1,48 @@
+/* Copyright (C) 2011-2014 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/>.  */
+
+#if !defined _MATH_H && !defined _COMPLEX_H
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
+#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
+# define _MATH_H_MATHDEF	1
+
+/* "float" and "double" expressions evaluated as "float" and "double". */
+typedef float float_t;
+typedef double double_t;
+
+/* The values returned by `ilogb' for 0 and NaN respectively.  */
+# define FP_ILOGB0	(-2147483647)
+# define FP_ILOGBNAN	(2147483647)
+
+/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
+   builtins are supported.  */
+# if __FP_FAST_FMA
+#  define FP_FAST_FMA 1
+# endif
+
+# if __FP_FAST_FMAF
+#  define FP_FAST_FMAF 1
+# endif
+
+# if __FP_FAST_FMAL
+#  define FP_FAST_FMAL 1
+# endif
+
+#endif /* ISO C99 */
diff --git a/sysdeps/tile/bits/mathinline.h b/sysdeps/tile/bits/mathinline.h
new file mode 100644
index 0000000000..f6f9102a98
--- /dev/null
+++ b/sysdeps/tile/bits/mathinline.h
@@ -0,0 +1,44 @@
+/* Copyright (C) 2011-2014 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 _MATH_H
+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
+#endif
+
+#ifndef __extern_always_inline
+# define __MATH_INLINE __inline
+#else
+# define __MATH_INLINE __extern_always_inline
+#endif
+
+
+#if defined __USE_ISOC99 && defined __GNUC__
+
+/* Test for negative number.  Used in the signbit() macro.  */
+__MATH_INLINE int
+__NTH (__signbitf (float __x))
+{
+  return __builtin_signbitf (__x);
+}
+__MATH_INLINE int
+__NTH (__signbit (double __x))
+{
+  return __builtin_signbit (__x);
+}
+
+#endif
diff --git a/sysdeps/tile/bits/setjmp.h b/sysdeps/tile/bits/setjmp.h
new file mode 100644
index 0000000000..a9ba3b986f
--- /dev/null
+++ b/sysdeps/tile/bits/setjmp.h
@@ -0,0 +1,36 @@
+/* Copyright (C) 2011-2014 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/>.  */
+
+/* Define the machine-dependent type `jmp_buf'.  TILE version.  */
+#ifndef _BITS_SETJMP_H
+#define _BITS_SETJMP_H	1
+
+#if !defined _SETJMP_H && !defined _PTHREAD_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+#ifndef _ASM
+
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+typedef __uint_reg_t __jmp_buf[32];
+
+#endif
+
+#endif /* bits/setjmp.h */