Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 603 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/s390/utf16-utf32-z9.c b/REORG.TODO/sysdeps/s390/utf16-utf32-z9.c
new file mode 100644
index 0000000000..7a174ea0e5
--- /dev/null
+++ b/REORG.TODO/sysdeps/s390/utf16-utf32-z9.c
@@ -0,0 +1,603 @@
+/* Conversion between UTF-16 and UTF-32 BE/internal.
+
+   This module uses the Z9-109 variants of the Convert Unicode
+   instructions.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+
+   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
+
+   Thanks to Daniel Appich who covered the relevant performance work
+   in his diploma thesis.
+
+   This 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.
+
+   This 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/>.  */
+
+#include <dlfcn.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <gconv.h>
+#include <string.h>
+
+/* Select which versions should be defined depending on support
+   for multiarch, vector and used minimum architecture level.  */
+#define HAVE_FROM_C		1
+#define FROM_LOOP_DEFAULT	FROM_LOOP_C
+#define HAVE_TO_C		1
+#define TO_LOOP_DEFAULT		TO_LOOP_C
+
+#if defined HAVE_S390_VX_ASM_SUPPORT && defined USE_MULTIARCH
+# define HAVE_FROM_VX		1
+# define HAVE_TO_VX		1
+#else
+# define HAVE_FROM_VX		0
+# define HAVE_TO_VX		0
+#endif
+
+#if defined HAVE_S390_VX_GCC_SUPPORT
+# define ASM_CLOBBER_VR(NR) , NR
+#else
+# define ASM_CLOBBER_VR(NR)
+#endif
+
+#if defined __s390x__
+# define CONVERT_32BIT_SIZE_T(REG)
+#else
+# define CONVERT_32BIT_SIZE_T(REG) "llgfr %" #REG ",%" #REG "\n\t"
+#endif
+
+/* UTF-32 big endian byte order mark.  */
+#define BOM_UTF32               0x0000feffu
+
+/* UTF-16 big endian byte order mark.  */
+#define BOM_UTF16               0xfeff
+
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		2
+#define MAX_NEEDED_FROM		4
+#define MIN_NEEDED_TO		4
+#define FROM_LOOP		FROM_LOOP_DEFAULT
+#define TO_LOOP			TO_LOOP_DEFAULT
+#define FROM_DIRECTION		(dir == from_utf16)
+#define ONE_DIRECTION           0
+
+/* Direction of the transformation.  */
+enum direction
+{
+  illegal_dir,
+  to_utf16,
+  from_utf16
+};
+
+struct utf16_data
+{
+  enum direction dir;
+  int emit_bom;
+};
+
+
+extern int gconv_init (struct __gconv_step *step);
+int
+gconv_init (struct __gconv_step *step)
+{
+  /* Determine which direction.  */
+  struct utf16_data *new_data;
+  enum direction dir = illegal_dir;
+  int emit_bom;
+  int result;
+
+  emit_bom = (__strcasecmp (step->__to_name, "UTF-32//") == 0
+	      || __strcasecmp (step->__to_name, "UTF-16//") == 0);
+
+  if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0
+      && (__strcasecmp (step->__to_name, "UTF-32//") == 0
+	  || __strcasecmp (step->__to_name, "UTF-32BE//") == 0
+	  || __strcasecmp (step->__to_name, "INTERNAL") == 0))
+    {
+      dir = from_utf16;
+    }
+  else if ((__strcasecmp (step->__to_name, "UTF-16//") == 0
+	    || __strcasecmp (step->__to_name, "UTF-16BE//") == 0)
+	   && (__strcasecmp (step->__from_name, "UTF-32BE//") == 0
+	       || __strcasecmp (step->__from_name, "INTERNAL") == 0))
+    {
+      dir = to_utf16;
+    }
+
+  result = __GCONV_NOCONV;
+  if (dir != illegal_dir)
+    {
+      new_data = (struct utf16_data *) malloc (sizeof (struct utf16_data));
+
+      result = __GCONV_NOMEM;
+      if (new_data != NULL)
+	{
+	  new_data->dir = dir;
+	  new_data->emit_bom = emit_bom;
+	  step->__data = new_data;
+
+	  if (dir == from_utf16)
+	    {
+	      step->__min_needed_from = MIN_NEEDED_FROM;
+	      step->__max_needed_from = MIN_NEEDED_FROM;
+	      step->__min_needed_to = MIN_NEEDED_TO;
+	      step->__max_needed_to = MIN_NEEDED_TO;
+	    }
+	  else
+	    {
+	      step->__min_needed_from = MIN_NEEDED_TO;
+	      step->__max_needed_from = MIN_NEEDED_TO;
+	      step->__min_needed_to = MIN_NEEDED_FROM;
+	      step->__max_needed_to = MIN_NEEDED_FROM;
+	    }
+
+	  step->__stateful = 0;
+
+	  result = __GCONV_OK;
+	}
+    }
+
+  return result;
+}
+
+
+extern void gconv_end (struct __gconv_step *data);
+void
+gconv_end (struct __gconv_step *data)
+{
+  free (data->__data);
+}
+
+#define PREPARE_LOOP							\
+  enum direction dir = ((struct utf16_data *) step->__data)->dir;	\
+  int emit_bom = ((struct utf16_data *) step->__data)->emit_bom;	\
+									\
+  if (emit_bom && !data->__internal_use					\
+      && data->__invocation_counter == 0)				\
+    {									\
+      if (dir == to_utf16)						\
+	{								\
+	  /* Emit the UTF-16 Byte Order Mark.  */			\
+	  if (__glibc_unlikely (outbuf + 2 > outend))			\
+	    return __GCONV_FULL_OUTPUT;					\
+									\
+	  put16u (outbuf, BOM_UTF16);					\
+	  outbuf += 2;							\
+	}								\
+      else								\
+	{								\
+	  /* Emit the UTF-32 Byte Order Mark.  */			\
+	  if (__glibc_unlikely (outbuf + 4 > outend))			\
+	    return __GCONV_FULL_OUTPUT;					\
+									\
+	  put32u (outbuf, BOM_UTF32);					\
+	  outbuf += 4;							\
+	}								\
+    }
+
+/* Conversion function from UTF-16 to UTF-32 internal/BE.  */
+
+#if HAVE_FROM_C == 1
+/* The software routine is copied from utf-16.c (minus bytes
+   swapping).  */
+# define BODY_FROM_C							\
+  {									\
+    uint16_t u1 = get16 (inptr);					\
+									\
+    if (__builtin_expect (u1 < 0xd800, 1) || u1 > 0xdfff)		\
+      {									\
+	/* No surrogate.  */						\
+	put32 (outptr, u1);						\
+	inptr += 2;							\
+      }									\
+    else								\
+      {									\
+	/* An isolated low-surrogate was found.  This has to be         \
+	   considered ill-formed.  */					\
+	if (__glibc_unlikely (u1 >= 0xdc00))				\
+	  {								\
+	    STANDARD_FROM_LOOP_ERR_HANDLER (2);				\
+	  }								\
+	/* It's a surrogate character.  At least the first word says	\
+	   it is.  */							\
+	if (__glibc_unlikely (inptr + 4 > inend))			\
+	  {								\
+	    /* We don't have enough input for another complete input	\
+	       character.  */						\
+	    result = __GCONV_INCOMPLETE_INPUT;				\
+	    break;							\
+	  }								\
+									\
+	inptr += 2;							\
+	uint16_t u2 = get16 (inptr);					\
+	if (__builtin_expect (u2 < 0xdc00, 0)				\
+	    || __builtin_expect (u2 > 0xdfff, 0))			\
+	  {								\
+	    /* This is no valid second word for a surrogate.  */	\
+	    inptr -= 2;							\
+	    STANDARD_FROM_LOOP_ERR_HANDLER (2);				\
+	  }								\
+									\
+	put32 (outptr, ((u1 - 0xd7c0) << 10) + (u2 - 0xdc00));		\
+	inptr += 2;							\
+      }									\
+    outptr += 4;							\
+  }
+
+
+/* Generate loop-function with software routing.  */
+# define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+# define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+# define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+# define FROM_LOOP_C		__from_utf16_loop_c
+# define LOOPFCT		FROM_LOOP_C
+# define LOOP_NEED_FLAGS
+# define BODY			BODY_FROM_C
+# include <iconv/loop.c>
+#else
+# define FROM_LOOP_C		NULL
+#endif /* HAVE_FROM_C != 1  */
+
+#if HAVE_FROM_VX == 1
+# define BODY_FROM_VX							\
+  {									\
+    size_t inlen = inend - inptr;					\
+    size_t outlen = outend - outptr;					\
+    unsigned long tmp, tmp2, tmp3;					\
+    asm volatile (".machine push\n\t"					\
+		  ".machine \"z13\"\n\t"				\
+		  ".machinemode \"zarch_nohighgprs\"\n\t"		\
+		  /* Setup to check for surrogates.  */			\
+		  "    larl %[R_TMP],9f\n\t"				\
+		  "    vlm %%v30,%%v31,0(%[R_TMP])\n\t"			\
+		  CONVERT_32BIT_SIZE_T ([R_INLEN])			\
+		  CONVERT_32BIT_SIZE_T ([R_OUTLEN])			\
+		  /* Loop which handles UTF-16 chars <0xd800, >0xdfff.  */ \
+		  "0:  clgijl %[R_INLEN],16,2f\n\t"			\
+		  "    clgijl %[R_OUTLEN],32,2f\n\t"			\
+		  "1:  vl %%v16,0(%[R_IN])\n\t"				\
+		  /* Check for surrogate chars.  */			\
+		  "    vstrchs %%v19,%%v16,%%v30,%%v31\n\t"		\
+		  "    jno 10f\n\t"					\
+		  /* Enlarge to UTF-32.  */				\
+		  "    vuplhh %%v17,%%v16\n\t"				\
+		  "    la %[R_IN],16(%[R_IN])\n\t"			\
+		  "    vupllh %%v18,%%v16\n\t"				\
+		  "    aghi %[R_INLEN],-16\n\t"				\
+		  /* Store 32 bytes to buf_out.  */			\
+		  "    vstm %%v17,%%v18,0(%[R_OUT])\n\t"		\
+		  "    aghi %[R_OUTLEN],-32\n\t"			\
+		  "    la %[R_OUT],32(%[R_OUT])\n\t"			\
+		  "    clgijl %[R_INLEN],16,2f\n\t"			\
+		  "    clgijl %[R_OUTLEN],32,2f\n\t"			\
+		  "    j 1b\n\t"					\
+		  /* Setup to check for ch >= 0xd800 && ch <= 0xdfff. (v30, v31)  */ \
+		  "9:  .short 0xd800,0xdfff,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
+		  "    .short 0xa000,0xc000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
+		  /* At least one uint16_t is in range of surrogates.	\
+		     Store the preceding chars.  */			\
+		  "10: vlgvb %[R_TMP],%%v19,7\n\t"			\
+		  "    vuplhh %%v17,%%v16\n\t"				\
+		  "    sllg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes.  */ \
+		  "    ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store.  */ \
+		  "    jl 12f\n\t"					\
+		  "    vstl %%v17,%[R_TMP2],0(%[R_OUT])\n\t"		\
+		  "    vupllh %%v18,%%v16\n\t"				\
+		  "    ahi %[R_TMP2],-16\n\t"				\
+		  "    jl 11f\n\t"					\
+		  "    vstl %%v18,%[R_TMP2],16(%[R_OUT])\n\t"		\
+		  "11: \n\t" /* Update pointers.  */			\
+		  "    la %[R_IN],0(%[R_TMP],%[R_IN])\n\t"		\
+		  "    slgr %[R_INLEN],%[R_TMP]\n\t"			\
+		  "    la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t"		\
+		  "    slgr %[R_OUTLEN],%[R_TMP3]\n\t"			\
+		  /* Calculate remaining uint16_t values in loaded vrs.  */ \
+		  "12: lghi %[R_TMP2],16\n\t"				\
+		  "    slgr %[R_TMP2],%[R_TMP]\n\t"			\
+		  "    srl %[R_TMP2],1\n\t"				\
+		  "    llh %[R_TMP],0(%[R_IN])\n\t"			\
+		  "    aghi %[R_OUTLEN],-4\n\t"				\
+		  "    j 16f\n\t"					\
+		  /* Handle remaining bytes.  */			\
+		  "2:  \n\t"						\
+		  /* Zero, one or more bytes available?  */		\
+		  "    clgfi %[R_INLEN],1\n\t"				\
+		  "    je 97f\n\t" /* Only one byte available.  */	\
+		  "    jl 99f\n\t" /* End if no bytes available.  */	\
+		  /* Calculate remaining uint16_t values in inptr.  */	\
+		  "    srlg %[R_TMP2],%[R_INLEN],1\n\t"			\
+		  /* Handle remaining uint16_t values.  */		\
+		  "13: llh %[R_TMP],0(%[R_IN])\n\t"			\
+		  "    slgfi %[R_OUTLEN],4\n\t"				\
+		  "    jl 96f \n\t"					\
+		  "    clfi %[R_TMP],0xd800\n\t"			\
+		  "    jhe 15f\n\t"					\
+		  "14: st %[R_TMP],0(%[R_OUT])\n\t"			\
+		  "    la %[R_IN],2(%[R_IN])\n\t"			\
+		  "    aghi %[R_INLEN],-2\n\t"				\
+		  "    la %[R_OUT],4(%[R_OUT])\n\t"			\
+		  "    brctg %[R_TMP2],13b\n\t"				\
+		  "    j 0b\n\t" /* Switch to vx-loop.  */		\
+		  /* Handle UTF-16 surrogate pair.  */			\
+		  "15: clfi %[R_TMP],0xdfff\n\t"			\
+		  "    jh 14b\n\t" /* Jump away if ch > 0xdfff.  */	\
+		  "16: clfi %[R_TMP],0xdc00\n\t"			\
+		  "    jhe 98f\n\t" /* Jump away in case of low-surrogate.  */ \
+		  "    slgfi %[R_INLEN],4\n\t"				\
+		  "    jl 97f\n\t" /* Big enough input?  */		\
+		  "    llh %[R_TMP3],2(%[R_IN])\n\t" /* Load low surrogate.  */ \
+		  "    slfi %[R_TMP],0xd7c0\n\t"			\
+		  "    sll %[R_TMP],10\n\t"				\
+		  "    risbgn %[R_TMP],%[R_TMP3],54,63,0\n\t" /* Insert klmnopqrst.  */ \
+		  "    nilf %[R_TMP3],0xfc00\n\t"			\
+		  "    clfi %[R_TMP3],0xdc00\n\t" /* Check if it starts with 0xdc00.  */ \
+		  "    jne 98f\n\t"					\
+		  "    st %[R_TMP],0(%[R_OUT])\n\t"			\
+		  "    la %[R_IN],4(%[R_IN])\n\t"			\
+		  "    la %[R_OUT],4(%[R_OUT])\n\t"			\
+		  "    aghi %[R_TMP2],-2\n\t"				\
+		  "    jh 13b\n\t" /* Handle remaining uint16_t values.  */ \
+		  "    j 0b\n\t" /* Switch to vx-loop.  */		\
+		  "96: \n\t" /* Return full output.  */			\
+		  "    lghi %[R_RES],%[RES_OUT_FULL]\n\t"		\
+		  "    j 99f\n\t"					\
+		  "97: \n\t" /* Return incomplete input.  */		\
+		  "    lghi %[R_RES],%[RES_IN_FULL]\n\t"		\
+		  "    j 99f\n\t"					\
+		  "98:\n\t" /* Return Illegal character.  */		\
+		  "    lghi %[R_RES],%[RES_IN_ILL]\n\t"			\
+		  "99:\n\t"						\
+		  ".machine pop"					\
+		  : /* outputs */ [R_IN] "+a" (inptr)			\
+		    , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr)	\
+		    , [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp)	\
+		    , [R_TMP2] "=d" (tmp2), [R_TMP3] "=a" (tmp3)	\
+		    , [R_RES] "+d" (result)				\
+		  : /* inputs */					\
+		    [RES_OUT_FULL] "i" (__GCONV_FULL_OUTPUT)		\
+		    , [RES_IN_ILL] "i" (__GCONV_ILLEGAL_INPUT)		\
+		    , [RES_IN_FULL] "i" (__GCONV_INCOMPLETE_INPUT)	\
+		  : /* clobber list */ "memory", "cc"			\
+		    ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17")	\
+		    ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19")	\
+		    ASM_CLOBBER_VR ("v30") ASM_CLOBBER_VR ("v31")	\
+		  );							\
+    if (__glibc_likely (inptr == inend)					\
+	|| result != __GCONV_ILLEGAL_INPUT)				\
+      break;								\
+									\
+    STANDARD_FROM_LOOP_ERR_HANDLER (2);					\
+  }
+
+
+/* Generate loop-function with hardware vector instructions.  */
+# define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+# define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+# define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+# define FROM_LOOP_VX		__from_utf16_loop_vx
+# define LOOPFCT		FROM_LOOP_VX
+# define LOOP_NEED_FLAGS
+# define BODY			BODY_FROM_VX
+# include <iconv/loop.c>
+#else
+# define FROM_LOOP_VX		NULL
+#endif /* HAVE_FROM_VX != 1  */
+
+
+/* Conversion from UTF-32 internal/BE to UTF-16.  */
+
+#if HAVE_TO_C == 1
+/* The software routine is copied from utf-16.c (minus bytes
+   swapping).  */
+# define BODY_TO_C							\
+  {									\
+    uint32_t c = get32 (inptr);						\
+									\
+    if (__builtin_expect (c <= 0xd7ff, 1)				\
+	|| (c > 0xdfff && c <= 0xffff))					\
+      {									\
+	/* Two UTF-16 chars.  */					\
+	put16 (outptr, c);						\
+      }									\
+    else if (__builtin_expect (c >= 0x10000, 1)				\
+	     && __builtin_expect (c <= 0x10ffff, 1))			\
+      {									\
+	/* Four UTF-16 chars.  */					\
+	uint16_t zabcd = ((c & 0x1f0000) >> 16) - 1;			\
+	uint16_t out;							\
+									\
+	/* Generate a surrogate character.  */				\
+	if (__glibc_unlikely (outptr + 4 > outend))			\
+	  {								\
+	    /* Overflow in the output buffer.  */			\
+	    result = __GCONV_FULL_OUTPUT;				\
+	    break;							\
+	  }								\
+									\
+	out = 0xd800;							\
+	out |= (zabcd & 0xff) << 6;					\
+	out |= (c >> 10) & 0x3f;					\
+	put16 (outptr, out);						\
+	outptr += 2;							\
+									\
+	out = 0xdc00;							\
+	out |= c & 0x3ff;						\
+	put16 (outptr, out);						\
+      }									\
+    else								\
+      {									\
+	STANDARD_TO_LOOP_ERR_HANDLER (4);				\
+      }									\
+    outptr += 2;							\
+    inptr += 4;								\
+  }
+
+/* Generate loop-function with software routing.  */
+# define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+# define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+# define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+# define TO_LOOP_C		__to_utf16_loop_c
+# define LOOPFCT		TO_LOOP_C
+# define LOOP_NEED_FLAGS
+# define BODY			BODY_TO_C
+# include <iconv/loop.c>
+#else
+# define TO_LOOP_C		NULL
+#endif /* HAVE_TO_C != 1  */
+
+#if HAVE_TO_VX == 1
+# define BODY_TO_VX							\
+  {									\
+    size_t inlen = inend - inptr;					\
+    size_t outlen = outend - outptr;					\
+    unsigned long tmp, tmp2, tmp3;					\
+    asm volatile (".machine push\n\t"					\
+		  ".machine \"z13\"\n\t"				\
+		  ".machinemode \"zarch_nohighgprs\"\n\t"		\
+		  /* Setup to check for surrogates.  */			\
+		  "    larl %[R_TMP],9f\n\t"				\
+		  "    vlm %%v30,%%v31,0(%[R_TMP])\n\t"			\
+		  CONVERT_32BIT_SIZE_T ([R_INLEN])			\
+		  CONVERT_32BIT_SIZE_T ([R_OUTLEN])			\
+		  /* Loop which handles UTF-16 chars			\
+		     ch < 0xd800 || (ch > 0xdfff && ch < 0x10000).  */	\
+		  "0:  clgijl %[R_INLEN],32,2f\n\t"			\
+		  "    clgijl %[R_OUTLEN],16,2f\n\t"			\
+		  "1:  vlm %%v16,%%v17,0(%[R_IN])\n\t"			\
+		  "    lghi %[R_TMP2],0\n\t"				\
+		  /* Shorten to UTF-16.  */				\
+		  "    vpkf %%v18,%%v16,%%v17\n\t"			\
+		  /* Check for surrogate chars.  */			\
+		  "    vstrcfs %%v19,%%v16,%%v30,%%v31\n\t"		\
+		  "    jno 10f\n\t"					\
+		  "    vstrcfs %%v19,%%v17,%%v30,%%v31\n\t"		\
+		  "    jno 11f\n\t"					\
+		  /* Store 16 bytes to buf_out.  */			\
+		  "    vst %%v18,0(%[R_OUT])\n\t"			\
+		  "    la %[R_IN],32(%[R_IN])\n\t"			\
+		  "    aghi %[R_INLEN],-32\n\t"				\
+		  "    aghi %[R_OUTLEN],-16\n\t"			\
+		  "    la %[R_OUT],16(%[R_OUT])\n\t"			\
+		  "    clgijl %[R_INLEN],32,2f\n\t"			\
+		  "    clgijl %[R_OUTLEN],16,2f\n\t"			\
+		  "    j 1b\n\t"					\
+		  /* Calculate remaining uint32_t values in inptr.  */	\
+		  "2:  \n\t"						\
+		  "    clgije %[R_INLEN],0,99f\n\t"			\
+		  "    clgijl %[R_INLEN],4,92f\n\t"			\
+		  "    srlg %[R_TMP2],%[R_INLEN],2\n\t"			\
+		  "    j 20f\n\t"					\
+		  /* Setup to check for ch >= 0xd800 && ch <= 0xdfff	\
+		     and check for ch >= 0x10000. (v30, v31)  */	\
+		  "9:  .long 0xd800,0xdfff,0x10000,0x10000\n\t"		\
+		  "    .long 0xa0000000,0xc0000000, 0xa0000000,0xa0000000\n\t" \
+		  /* At least on UTF32 char is in range of surrogates.	\
+		     Store the preceding characters.  */		\
+		  "11: ahi %[R_TMP2],16\n\t"				\
+		  "10: vlgvb %[R_TMP],%%v19,7\n\t"			\
+		  "    agr %[R_TMP],%[R_TMP2]\n\t"			\
+		  "    srlg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes.  */ \
+		  "    ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store.  */ \
+		  "    jl 12f\n\t"					\
+		  "    vstl %%v18,%[R_TMP2],0(%[R_OUT])\n\t"		\
+		  /* Update pointers.  */				\
+		  "    la %[R_IN],0(%[R_TMP],%[R_IN])\n\t"		\
+		  "    slgr %[R_INLEN],%[R_TMP]\n\t"			\
+		  "    la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t"		\
+		  "    slgr %[R_OUTLEN],%[R_TMP3]\n\t"			\
+		  /* Calculate remaining uint32_t values in vrs.  */	\
+		  "12: lghi %[R_TMP2],8\n\t"				\
+		  "    srlg %[R_TMP3],%[R_TMP3],1\n\t"			\
+		  "    slgr %[R_TMP2],%[R_TMP3]\n\t"			\
+		  /* Handle remaining UTF-32 characters.  */		\
+		  "20: l %[R_TMP],0(%[R_IN])\n\t"			\
+		  "    aghi %[R_INLEN],-4\n\t"				\
+		  /* Test if ch is 2byte UTF-16 char. */		\
+		  "    clfi %[R_TMP],0xffff\n\t"			\
+		  "    jh 21f\n\t"					\
+		  /* Handle 2 byte UTF16 char.  */			\
+		  "    lgr %[R_TMP3],%[R_TMP]\n\t"			\
+		  "    nilf %[R_TMP],0xf800\n\t"			\
+		  "    clfi %[R_TMP],0xd800\n\t"			\
+		  "    je 91f\n\t" /* Do not accept UTF-16 surrogates.  */ \
+		  "    slgfi %[R_OUTLEN],2\n\t"				\
+		  "    jl 90f \n\t"					\
+		  "    sth %[R_TMP3],0(%[R_OUT])\n\t"			\
+		  "    la %[R_IN],4(%[R_IN])\n\t"			\
+		  "    la %[R_OUT],2(%[R_OUT])\n\t"			\
+		  "    brctg %[R_TMP2],20b\n\t"				\
+		  "    j 0b\n\t" /* Switch to vx-loop.  */		\
+		  /* Test if ch is 4byte UTF-16 char. */		\
+		  "21: clfi %[R_TMP],0x10ffff\n\t"			\
+		  "    jh 91f\n\t" /* ch > 0x10ffff is not allowed!  */	\
+		  /* Handle 4 byte UTF16 char.  */			\
+		  "    slgfi %[R_OUTLEN],4\n\t"				\
+		  "    jl 90f \n\t"					\
+		  "    slfi %[R_TMP],0x10000\n\t" /* zabcd = uvwxy - 1.  */ \
+		  "    llilf %[R_TMP3],0xd800dc00\n\t"			\
+		  "    la %[R_IN],4(%[R_IN])\n\t"			\
+		  "    risbgn %[R_TMP3],%[R_TMP],38,47,6\n\t" /* High surrogate.  */ \
+		  "    risbgn %[R_TMP3],%[R_TMP],54,63,0\n\t" /* Low surrogate.  */ \
+		  "    st %[R_TMP3],0(%[R_OUT])\n\t"			\
+		  "    la %[R_OUT],4(%[R_OUT])\n\t"			\
+		  "    brctg %[R_TMP2],20b\n\t"				\
+		  "    j 0b\n\t" /* Switch to vx-loop.  */		\
+		  "92: lghi %[R_RES],%[RES_IN_FULL]\n\t"		\
+		  "    j 99f\n\t"					\
+		  "91: lghi %[R_RES],%[RES_IN_ILL]\n\t"			\
+		  "    j 99f\n\t"					\
+		  "90: lghi %[R_RES],%[RES_OUT_FULL]\n\t"		\
+		  "99: \n\t"						\
+		  ".machine pop"					\
+		  : /* outputs */ [R_IN] "+a" (inptr)			\
+		    , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr)	\
+		    , [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp)	\
+		    , [R_TMP2] "=d" (tmp2), [R_TMP3] "=a" (tmp3)	\
+		    , [R_RES] "+d" (result)				\
+		  : /* inputs */					\
+		    [RES_OUT_FULL] "i" (__GCONV_FULL_OUTPUT)		\
+		    , [RES_IN_ILL] "i" (__GCONV_ILLEGAL_INPUT)		\
+		    , [RES_IN_FULL] "i" (__GCONV_INCOMPLETE_INPUT)	\
+		  : /* clobber list */ "memory", "cc"			\
+		    ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17")	\
+		    ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19")	\
+		    ASM_CLOBBER_VR ("v30") ASM_CLOBBER_VR ("v31")	\
+		  );							\
+    if (__glibc_likely (inptr == inend)					\
+	|| result != __GCONV_ILLEGAL_INPUT)				\
+      break;								\
+									\
+    STANDARD_TO_LOOP_ERR_HANDLER (4);					\
+  }
+
+/* Generate loop-function with hardware vector instructions.  */
+# define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+# define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+# define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+# define TO_LOOP_VX		__to_utf16_loop_vx
+# define LOOPFCT		TO_LOOP_VX
+# define LOOP_NEED_FLAGS
+# define BODY			BODY_TO_VX
+# include <iconv/loop.c>
+#else
+# define TO_LOOP_VX		NULL
+#endif /* HAVE_TO_VX != 1  */
+
+/* This file also exists in sysdeps/s390/multiarch/ which
+   generates ifunc resolvers for FROM/TO_LOOP functions
+   and includes iconv/skeleton.c afterwards.  */
+#if ! defined USE_MULTIARCH
+# include <iconv/skeleton.c>
+#endif