S390: Use s390-64 specific ionv-modules on s390-32, too.

This patch reworks the existing s390 64bit specific iconv modules in order
to use them on s390 31bit, too.

Thus the parts for subdirectory iconvdata in sysdeps/s390/s390-64/Makefile
were moved to sysdeps/s390/Makefile so that they apply on 31bit, too.
All those modules are moved from sysdeps/s390/s390-64 directory to sysdeps/s390.

The iso-8859-1 to/from cp037 module was adjusted, to use brct (branch relative
on count) instruction on 31bit s390 instead of brctg, because the brctg is a
zarch instruction and is not available on a 31bit kernel.

The utf modules are using zarch instructions, thus the directive machinemode
zarch_nohighgprs was added to the inline assemblies to omit the high-gprs flag
in the shared libraries. Otherwise they can't be loaded on a 31bit kernel.
The ifunc resolvers were adjusted in order to call the etf3eh or vector variants
only if zarch instructions are available (64bit kernel in 31bit compat-mode).
Furthermore some variable types were changed. E.g. unsigned long long would be
a register pair on s390 31bit, but we want only one single register.
For variables of type size_t the register contents have to be enlarged from a
32bit to a 64bit value on 31bit, because the inline assemblies uses 64bit values
in such cases.

ChangeLog:

	* sysdeps/s390/s390-64/Makefile (iconvdata-subdirectory):
	Move to ...
	* sysdeps/s390/Makefile: ... here.
	* sysdeps/s390/s390-64/iso-8859-1_cp037_z900.c: Move to ...
	* sysdeps/s390/iso-8859-1_cp037_z900.c: ... here.
	(BRANCH_ON_COUNT): New define.
	(TR_LOOP): Use BRANCH_ON_COUNT instead of brctg.
	* sysdeps/s390/s390-64/utf16-utf32-z9.c: Move to ...
	* sysdeps/s390/utf16-utf32-z9.c: ... here and adjust to
	run on s390-32, too.
	* sysdeps/s390/s390-64/utf8-utf16-z9.c: Move to ...
	* sysdeps/s390/utf8-utf16-z9.c: ... here and adjust to
	run on s390-32, too.
	* sysdeps/s390/s390-64/utf8-utf32-z9.c: Move to ...
	* sysdeps/s390/utf8-utf32-z9.c: ... here and adjust to
	run on s390-32, too.

1 files changed, 820 insertions, 0 deletions

diff --git a/sysdeps/s390/utf8-utf32-z9.c b/sysdeps/s390/utf8-utf32-z9.c
new file mode 100644
index 0000000000..e39e0a73d9
--- /dev/null
+++ b/sysdeps/s390/utf8-utf32-z9.c
@@ -0,0 +1,820 @@
+/* Conversion between UTF-8 and UTF-32 BE/internal.
+
+   This module uses the Z9-109 variants of the Convert Unicode
+   instructions.
+   Copyright (C) 1997-2016 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 <dl-procinfo.h>
+#include <gconv.h>
+
+#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
+
+/* Defines for skeleton.c.  */
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		6
+#define MIN_NEEDED_TO		4
+#define FROM_LOOP		__from_utf8_loop
+#define TO_LOOP			__to_utf8_loop
+#define FROM_DIRECTION		(dir == from_utf8)
+#define ONE_DIRECTION           0
+
+/* UTF-32 big endian byte order mark.  */
+#define BOM			0x0000feffu
+
+/* Direction of the transformation.  */
+enum direction
+{
+  illegal_dir,
+  to_utf8,
+  from_utf8
+};
+
+struct utf8_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 utf8_data *new_data;
+  enum direction dir = illegal_dir;
+  int emit_bom;
+  int result;
+
+  emit_bom = (__strcasecmp (step->__to_name, "UTF-32//") == 0);
+
+  if (__strcasecmp (step->__from_name, "ISO-10646/UTF8/") == 0
+      && (__strcasecmp (step->__to_name, "UTF-32//") == 0
+	  || __strcasecmp (step->__to_name, "UTF-32BE//") == 0
+	  || __strcasecmp (step->__to_name, "INTERNAL") == 0))
+    {
+      dir = from_utf8;
+    }
+  else if (__strcasecmp (step->__to_name, "ISO-10646/UTF8/") == 0
+	   && (__strcasecmp (step->__from_name, "UTF-32BE//") == 0
+	       || __strcasecmp (step->__from_name, "INTERNAL") == 0))
+    {
+      dir = to_utf8;
+    }
+
+  result = __GCONV_NOCONV;
+  if (dir != illegal_dir)
+    {
+      new_data = (struct utf8_data *) malloc (sizeof (struct utf8_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_utf8)
+	    {
+	      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);
+}
+
+/* The macro for the hardware loop.  This is used for both
+   directions.  */
+#define HARDWARE_CONVERT(INSTRUCTION)					\
+  {									\
+    register const unsigned char* pInput __asm__ ("8") = inptr;		\
+    register size_t inlen __asm__ ("9") = inend - inptr;		\
+    register unsigned char* pOutput __asm__ ("10") = outptr;		\
+    register size_t outlen __asm__("11") = outend - outptr;		\
+    unsigned long cc = 0;						\
+									\
+    __asm__ __volatile__ (".machine push       \n\t"			\
+			  ".machine \"z9-109\" \n\t"			\
+			  ".machinemode \"zarch_nohighgprs\"\n\t"	\
+			  "0: " INSTRUCTION "  \n\t"			\
+			  ".machine pop        \n\t"			\
+			  "   jo     0b        \n\t"			\
+			  "   ipm    %2        \n"			\
+			  : "+a" (pOutput), "+a" (pInput), "+d" (cc),	\
+			    "+d" (outlen), "+d" (inlen)			\
+			  :						\
+			  : "cc", "memory");				\
+									\
+    inptr = pInput;							\
+    outptr = pOutput;							\
+    cc >>= 28;								\
+									\
+    if (cc == 1)							\
+      {									\
+	result = __GCONV_FULL_OUTPUT;					\
+      }									\
+    else if (cc == 2)							\
+      {									\
+	result = __GCONV_ILLEGAL_INPUT;					\
+      }									\
+  }
+
+#define PREPARE_LOOP							\
+  enum direction dir = ((struct utf8_data *) step->__data)->dir;	\
+  int emit_bom = ((struct utf8_data *) step->__data)->emit_bom;		\
+									\
+  if (emit_bom && !data->__internal_use					\
+      && data->__invocation_counter == 0)				\
+    {									\
+      /* Emit the Byte Order Mark.  */					\
+      if (__glibc_unlikely (outbuf + 4 > outend))			\
+	return __GCONV_FULL_OUTPUT;					\
+									\
+      put32u (outbuf, BOM);						\
+      outbuf += 4;							\
+    }
+
+/* Conversion function from UTF-8 to UTF-32 internal/BE.  */
+
+#define STORE_REST_COMMON						      \
+  {									      \
+    /* We store the remaining bytes while converting them into the UCS4	      \
+       format.  We can assume that the first byte in the buffer is	      \
+       correct and that it requires a larger number of bytes than there	      \
+       are in the input buffer.  */					      \
+    wint_t ch = **inptrp;						      \
+    size_t cnt, r;							      \
+									      \
+    state->__count = inend - *inptrp;					      \
+									      \
+    assert (ch != 0xc0 && ch != 0xc1);					      \
+    if (ch >= 0xc2 && ch < 0xe0)					      \
+      {									      \
+	/* We expect two bytes.  The first byte cannot be 0xc0 or	      \
+	   0xc1, otherwise the wide character could have been		      \
+	   represented using a single byte.  */				      \
+	cnt = 2;							      \
+	ch &= 0x1f;							      \
+      }									      \
+    else if (__glibc_likely ((ch & 0xf0) == 0xe0))			      \
+      {									      \
+	/* We expect three bytes.  */					      \
+	cnt = 3;							      \
+	ch &= 0x0f;							      \
+      }									      \
+    else if (__glibc_likely ((ch & 0xf8) == 0xf0))			      \
+      {									      \
+	/* We expect four bytes.  */					      \
+	cnt = 4;							      \
+	ch &= 0x07;							      \
+      }									      \
+    else if (__glibc_likely ((ch & 0xfc) == 0xf8))			      \
+      {									      \
+	/* We expect five bytes.  */					      \
+	cnt = 5;							      \
+	ch &= 0x03;							      \
+      }									      \
+    else								      \
+      {									      \
+	/* We expect six bytes.  */					      \
+	cnt = 6;							      \
+	ch &= 0x01;							      \
+      }									      \
+									      \
+    /* The first byte is already consumed.  */				      \
+    r = cnt - 1;							      \
+    while (++(*inptrp) < inend)						      \
+      {									      \
+	ch <<= 6;							      \
+	ch |= **inptrp & 0x3f;						      \
+	--r;								      \
+      }									      \
+									      \
+    /* Shift for the so far missing bytes.  */				      \
+    ch <<= r * 6;							      \
+									      \
+    /* Store the number of bytes expected for the entire sequence.  */	      \
+    state->__count |= cnt << 8;						      \
+									      \
+    /* Store the value.  */						      \
+    state->__value.__wch = ch;						      \
+  }
+
+#define UNPACK_BYTES_COMMON \
+  {									      \
+    static const unsigned char inmask[5] = { 0xc0, 0xe0, 0xf0, 0xf8, 0xfc };  \
+    wint_t wch = state->__value.__wch;					      \
+    size_t ntotal = state->__count >> 8;				      \
+									      \
+    inlen = state->__count & 255;					      \
+									      \
+    bytebuf[0] = inmask[ntotal - 2];					      \
+									      \
+    do									      \
+      {									      \
+	if (--ntotal < inlen)						      \
+	  bytebuf[ntotal] = 0x80 | (wch & 0x3f);			      \
+	wch >>= 6;							      \
+      }									      \
+    while (ntotal > 1);							      \
+									      \
+    bytebuf[0] |= wch;							      \
+  }
+
+#define CLEAR_STATE_COMMON \
+  state->__count = 0
+
+#define BODY_FROM_HW(ASM)						\
+  {									\
+    ASM;								\
+    if (__glibc_likely (inptr == inend)					\
+	|| result == __GCONV_FULL_OUTPUT)				\
+      break;								\
+									\
+    int i;								\
+    for (i = 1; inptr + i < inend && i < 5; ++i)			\
+      if ((inptr[i] & 0xc0) != 0x80)					\
+	break;								\
+									\
+    if (__glibc_likely (inptr + i == inend				\
+			&& result == __GCONV_EMPTY_INPUT))		\
+      {									\
+	result = __GCONV_INCOMPLETE_INPUT;				\
+	break;								\
+      }									\
+    STANDARD_FROM_LOOP_ERR_HANDLER (i);					\
+  }
+
+/* This hardware routine uses the Convert UTF8 to UTF32 (cu14) instruction.  */
+#define BODY_FROM_ETF3EH BODY_FROM_HW (HARDWARE_CONVERT ("cu14 %0, %1, 1"))
+
+
+/* The software routine is copied from gconv_simple.c.  */
+#define BODY_FROM_C							\
+  {									\
+    /* Next input byte.  */						\
+    uint32_t ch = *inptr;						\
+									\
+    if (__glibc_likely (ch < 0x80))					\
+      {									\
+	/* One byte sequence.  */					\
+	++inptr;							\
+      }									\
+    else								\
+      {									\
+	uint_fast32_t cnt;						\
+	uint_fast32_t i;						\
+									\
+	if (ch >= 0xc2 && ch < 0xe0)					\
+	  {								\
+	    /* We expect two bytes.  The first byte cannot be 0xc0 or	\
+	       0xc1, otherwise the wide character could have been	\
+	       represented using a single byte.  */			\
+	    cnt = 2;							\
+	    ch &= 0x1f;							\
+	  }								\
+	else if (__glibc_likely ((ch & 0xf0) == 0xe0))			\
+	  {								\
+	    /* We expect three bytes.  */				\
+	    cnt = 3;							\
+	    ch &= 0x0f;							\
+	  }								\
+	else if (__glibc_likely ((ch & 0xf8) == 0xf0))			\
+	  {								\
+	    /* We expect four bytes.  */				\
+	    cnt = 4;							\
+	    ch &= 0x07;							\
+	  }								\
+	else								\
+	  {								\
+	    /* Search the end of this ill-formed UTF-8 character.  This	\
+	       is the next byte with (x & 0xc0) != 0x80.  */		\
+	    i = 0;							\
+	    do								\
+	      ++i;							\
+	    while (inptr + i < inend					\
+		   && (*(inptr + i) & 0xc0) == 0x80			\
+		   && i < 5);						\
+									\
+	  errout:							\
+	    STANDARD_FROM_LOOP_ERR_HANDLER (i);				\
+	  }								\
+									\
+	if (__glibc_unlikely (inptr + cnt > inend))			\
+	  {								\
+	    /* We don't have enough input.  But before we report	\
+	       that check that all the bytes are correct.  */		\
+	    for (i = 1; inptr + i < inend; ++i)				\
+	      if ((inptr[i] & 0xc0) != 0x80)				\
+		break;							\
+									\
+	    if (__glibc_likely (inptr + i == inend))			\
+	      {								\
+		result = __GCONV_INCOMPLETE_INPUT;			\
+		break;							\
+	      }								\
+									\
+	    goto errout;						\
+	  }								\
+									\
+	/* Read the possible remaining bytes.  */			\
+	for (i = 1; i < cnt; ++i)					\
+	  {								\
+	    uint32_t byte = inptr[i];					\
+									\
+	    if ((byte & 0xc0) != 0x80)					\
+	      /* This is an illegal encoding.  */			\
+	      break;							\
+									\
+	    ch <<= 6;							\
+	    ch |= byte & 0x3f;						\
+	  }								\
+									\
+	/* If i < cnt, some trail byte was not >= 0x80, < 0xc0.		\
+	   If cnt > 2 and ch < 2^(5*cnt-4), the wide character ch could	\
+	   have been represented with fewer than cnt bytes.  */		\
+	if (i < cnt || (cnt > 2 && (ch >> (5 * cnt - 4)) == 0)		\
+	    /* Do not accept UTF-16 surrogates.  */			\
+	    || (ch >= 0xd800 && ch <= 0xdfff)				\
+	    || (ch > 0x10ffff))						\
+	  {								\
+	    /* This is an illegal encoding.  */				\
+	    goto errout;						\
+	  }								\
+									\
+	inptr += cnt;							\
+      }									\
+									\
+    /* Now adjust the pointers and store the result.  */		\
+    *((uint32_t *) outptr) = ch;					\
+    outptr += sizeof (uint32_t);					\
+  }
+
+#define HW_FROM_VX							\
+  {									\
+    register const unsigned char* pInput asm ("8") = inptr;		\
+    register size_t inlen asm ("9") = inend - inptr;			\
+    register unsigned char* pOutput asm ("10") = outptr;		\
+    register size_t outlen asm("11") = outend - outptr;			\
+    unsigned long tmp, tmp2, tmp3;					\
+    asm volatile (".machine push\n\t"					\
+		  ".machine \"z13\"\n\t"				\
+		  ".machinemode \"zarch_nohighgprs\"\n\t"		\
+		  "    vrepib %%v30,0x7f\n\t" /* For compare > 0x7f.  */ \
+		  "    vrepib %%v31,0x20\n\t"				\
+		  CONVERT_32BIT_SIZE_T ([R_INLEN])			\
+		  CONVERT_32BIT_SIZE_T ([R_OUTLEN])			\
+		  /* Loop which handles UTF-8 chars <=0x7f.  */		\
+		  "0:  clgijl %[R_INLEN],16,20f\n\t"			\
+		  "    clgijl %[R_OUTLEN],64,20f\n\t"			\
+		  "1: vl %%v16,0(%[R_IN])\n\t"				\
+		  "    vstrcbs %%v17,%%v16,%%v30,%%v31\n\t"		\
+		  "    jno 10f\n\t" /* Jump away if not all bytes are 1byte \
+				   UTF8 chars.  */			\
+		  /* Enlarge to UCS4.  */				\
+		  "    vuplhb %%v18,%%v16\n\t"				\
+		  "    vupllb %%v19,%%v16\n\t"				\
+		  "    la %[R_IN],16(%[R_IN])\n\t"			\
+		  "    vuplhh %%v20,%%v18\n\t"				\
+		  "    aghi %[R_INLEN],-16\n\t"				\
+		  "    vupllh %%v21,%%v18\n\t"				\
+		  "    aghi %[R_OUTLEN],-64\n\t"			\
+		  "    vuplhh %%v22,%%v19\n\t"				\
+		  "    vupllh %%v23,%%v19\n\t"				\
+		  /* Store 64 bytes to buf_out.  */			\
+		  "    vstm %%v20,%%v23,0(%[R_OUT])\n\t"		\
+		  "    la %[R_OUT],64(%[R_OUT])\n\t"			\
+		  "    clgijl %[R_INLEN],16,20f\n\t"			\
+		  "    clgijl %[R_OUTLEN],64,20f\n\t"			\
+		  "    j 1b\n\t"					\
+		  "10: \n\t"						\
+		  /* At least one byte is > 0x7f.			\
+		     Store the preceding 1-byte chars.  */		\
+		  "    vlgvb %[R_TMP],%%v17,7\n\t"			\
+		  "    sllk %[R_TMP2],%[R_TMP],2\n\t" /* Compute highest \
+						     index to store. */ \
+		  "    llgfr %[R_TMP3],%[R_TMP2]\n\t"			\
+		  "    ahi %[R_TMP2],-1\n\t"				\
+		  "    jl 20f\n\t"					\
+		  "    vuplhb %%v18,%%v16\n\t"				\
+		  "    vuplhh %%v20,%%v18\n\t"				\
+		  "    vstl %%v20,%[R_TMP2],0(%[R_OUT])\n\t"		\
+		  "    ahi %[R_TMP2],-16\n\t"				\
+		  "    jl 11f\n\t"					\
+		  "    vupllh %%v21,%%v18\n\t"				\
+		  "    vstl %%v21,%[R_TMP2],16(%[R_OUT])\n\t"		\
+		  "    ahi %[R_TMP2],-16\n\t"				\
+		  "    jl 11f\n\t"					\
+		  "    vupllb %%v19,%%v16\n\t"				\
+		  "    vuplhh %%v22,%%v19\n\t"				\
+		  "    vstl %%v22,%[R_TMP2],32(%[R_OUT])\n\t"		\
+		  "    ahi %[R_TMP2],-16\n\t"				\
+		  "    jl 11f\n\t"					\
+		  "    vupllh %%v23,%%v19\n\t"				\
+		  "    vstl %%v23,%[R_TMP2],48(%[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"			\
+		  /* Handle multibyte utf8-char with convert instruction. */ \
+		  "20: cu14 %[R_OUT],%[R_IN],1\n\t"			\
+		  "    jo 0b\n\t" /* Try vector implemenation again.  */ \
+		  "    lochil %[R_RES],%[RES_OUT_FULL]\n\t" /* cc == 1.  */ \
+		  "    lochih %[R_RES],%[RES_IN_ILL]\n\t" /* cc == 2.  */ \
+		  ".machine pop"					\
+		  : /* outputs */ [R_IN] "+a" (pInput)			\
+		    , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (pOutput)	\
+		    , [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)		\
+		  : /* clobber list */ "memory", "cc"			\
+		    ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17")	\
+		    ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19")	\
+		    ASM_CLOBBER_VR ("v20") ASM_CLOBBER_VR ("v21")	\
+		    ASM_CLOBBER_VR ("v22") ASM_CLOBBER_VR ("v30")	\
+		    ASM_CLOBBER_VR ("v31")				\
+		  );							\
+    inptr = pInput;							\
+    outptr = pOutput;							\
+  }
+#define BODY_FROM_VX BODY_FROM_HW (HW_FROM_VX)
+
+/* These definitions apply to the UTF-8 to UTF-32 direction.  The
+   software implementation for UTF-8 still supports multibyte
+   characters up to 6 bytes whereas the hardware variant does not.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			__from_utf8_loop_c
+
+#define LOOP_NEED_FLAGS
+
+#define STORE_REST		STORE_REST_COMMON
+#define UNPACK_BYTES		UNPACK_BYTES_COMMON
+#define CLEAR_STATE		CLEAR_STATE_COMMON
+#define BODY			BODY_FROM_C
+#include <iconv/loop.c>
+
+
+/* Generate loop-function with hardware utf-convert instruction.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			__from_utf8_loop_etf3eh
+
+#define LOOP_NEED_FLAGS
+
+#define STORE_REST		STORE_REST_COMMON
+#define UNPACK_BYTES		UNPACK_BYTES_COMMON
+#define CLEAR_STATE		CLEAR_STATE_COMMON
+#define BODY			BODY_FROM_ETF3EH
+#include <iconv/loop.c>
+
+#if defined HAVE_S390_VX_ASM_SUPPORT
+/* 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 LOOPFCT		__from_utf8_loop_vx
+
+# define LOOP_NEED_FLAGS
+
+# define STORE_REST		STORE_REST_COMMON
+# define UNPACK_BYTES		UNPACK_BYTES_COMMON
+# define CLEAR_STATE		CLEAR_STATE_COMMON
+# define BODY			BODY_FROM_VX
+# include <iconv/loop.c>
+#endif
+
+
+/* Generate ifunc'ed loop function.  */
+__typeof(__from_utf8_loop_c)
+__attribute__ ((ifunc ("__from_utf8_loop_resolver")))
+__from_utf8_loop;
+
+static void *
+__from_utf8_loop_resolver (unsigned long int dl_hwcap)
+{
+#if defined HAVE_S390_VX_ASM_SUPPORT
+  if (dl_hwcap & HWCAP_S390_VX)
+    return __from_utf8_loop_vx;
+  else
+#endif
+  if (dl_hwcap & HWCAP_S390_ZARCH && dl_hwcap & HWCAP_S390_HIGH_GPRS
+      && dl_hwcap & HWCAP_S390_ETF3EH)
+    return __from_utf8_loop_etf3eh;
+  else
+    return __from_utf8_loop_c;
+}
+
+strong_alias (__from_utf8_loop_c_single, __from_utf8_loop_single)
+
+
+/* Conversion from UTF-32 internal/BE to UTF-8.  */
+#define BODY_TO_HW(ASM)							\
+  {									\
+    ASM;								\
+    if (__glibc_likely (inptr == inend)					\
+	|| result == __GCONV_FULL_OUTPUT)				\
+      break;								\
+    if (inptr + 4 > inend)						\
+      {									\
+	result = __GCONV_INCOMPLETE_INPUT;				\
+	break;								\
+      }									\
+    STANDARD_TO_LOOP_ERR_HANDLER (4);					\
+  }
+
+/* The hardware routine uses the S/390 cu41 instruction.  */
+#define BODY_TO_ETF3EH BODY_TO_HW (HARDWARE_CONVERT ("cu41 %0, %1"))
+
+/* The hardware routine uses the S/390 vector and cu41 instructions.  */
+#define BODY_TO_VX BODY_TO_HW (HW_TO_VX)
+
+/* The software routine mimics the S/390 cu41 instruction.  */
+#define BODY_TO_C						\
+  {								\
+    uint32_t wc = *((const uint32_t *) inptr);			\
+								\
+    if (__glibc_likely (wc <= 0x7f))				\
+      {								\
+	/* Single UTF-8 char.  */				\
+	*outptr = (uint8_t)wc;					\
+	outptr++;						\
+      }								\
+    else if (wc <= 0x7ff)					\
+      {								\
+	/* Two UTF-8 chars.  */					\
+	if (__glibc_unlikely (outptr + 2 > outend))		\
+	  {							\
+	    /* Overflow in the output buffer.  */		\
+	    result = __GCONV_FULL_OUTPUT;			\
+	    break;						\
+	  }							\
+								\
+	outptr[0] = 0xc0;					\
+	outptr[0] |= wc >> 6;					\
+								\
+	outptr[1] = 0x80;					\
+	outptr[1] |= wc & 0x3f;					\
+								\
+	outptr += 2;						\
+      }								\
+    else if (wc <= 0xffff)					\
+      {								\
+	/* Three UTF-8 chars.  */				\
+	if (__glibc_unlikely (outptr + 3 > outend))		\
+	  {							\
+	    /* Overflow in the output buffer.  */		\
+	    result = __GCONV_FULL_OUTPUT;			\
+	    break;						\
+	  }							\
+	if (wc >= 0xd800 && wc < 0xdc00)			\
+	  {							\
+	    /* Do not accept UTF-16 surrogates.   */		\
+	    result = __GCONV_ILLEGAL_INPUT;			\
+	    STANDARD_TO_LOOP_ERR_HANDLER (4);			\
+	  }							\
+	outptr[0] = 0xe0;					\
+	outptr[0] |= wc >> 12;					\
+								\
+	outptr[1] = 0x80;					\
+	outptr[1] |= (wc >> 6) & 0x3f;				\
+								\
+	outptr[2] = 0x80;					\
+	outptr[2] |= wc & 0x3f;					\
+								\
+	outptr += 3;						\
+      }								\
+      else if (wc <= 0x10ffff)					\
+	{							\
+	  /* Four UTF-8 chars.  */				\
+	  if (__glibc_unlikely (outptr + 4 > outend))		\
+	    {							\
+	      /* Overflow in the output buffer.  */		\
+	      result = __GCONV_FULL_OUTPUT;			\
+	      break;						\
+	    }							\
+	  outptr[0] = 0xf0;					\
+	  outptr[0] |= wc >> 18;				\
+								\
+	  outptr[1] = 0x80;					\
+	  outptr[1] |= (wc >> 12) & 0x3f;			\
+								\
+	  outptr[2] = 0x80;					\
+	  outptr[2] |= (wc >> 6) & 0x3f;			\
+								\
+	  outptr[3] = 0x80;					\
+	  outptr[3] |= wc & 0x3f;				\
+								\
+	  outptr += 4;						\
+	}							\
+      else							\
+	{							\
+	  STANDARD_TO_LOOP_ERR_HANDLER (4);			\
+	}							\
+    inptr += 4;							\
+  }
+
+#define HW_TO_VX							\
+  {									\
+    register const unsigned char* pInput asm ("8") = inptr;		\
+    register size_t inlen asm ("9") = inend - inptr;			\
+    register unsigned char* pOutput asm ("10") = outptr;		\
+    register size_t outlen asm("11") = outend - outptr;			\
+    unsigned long tmp, tmp2;						\
+    asm volatile (".machine push\n\t"					\
+		  ".machine \"z13\"\n\t"				\
+		  ".machinemode \"zarch_nohighgprs\"\n\t"		\
+		  "    vleif %%v20,127,0\n\t"   /* element 0: 127  */	\
+		  "    vzero %%v21\n\t"					\
+		  "    vleih %%v21,8192,0\n\t"  /* element 0:   >  */	\
+		  "    vleih %%v21,-8192,2\n\t" /* element 1: =<>  */	\
+		  CONVERT_32BIT_SIZE_T ([R_INLEN])			\
+		  CONVERT_32BIT_SIZE_T ([R_OUTLEN])			\
+		  /* Loop which handles UTF-32 chars <=0x7f.  */	\
+		  "0:  clgijl %[R_INLEN],64,20f\n\t"			\
+		  "    clgijl %[R_OUTLEN],16,20f\n\t"			\
+		  "1:  vlm %%v16,%%v19,0(%[R_IN])\n\t"			\
+		  "    lghi %[R_TMP],0\n\t"				\
+		  /* Shorten to byte values.  */			\
+		  "    vpkf %%v23,%%v16,%%v17\n\t"			\
+		  "    vpkf %%v24,%%v18,%%v19\n\t"			\
+		  "    vpkh %%v23,%%v23,%%v24\n\t"			\
+		  /* Checking for values > 0x7f.  */			\
+		  "    vstrcfs %%v22,%%v16,%%v20,%%v21\n\t"		\
+		  "    jno 10f\n\t"					\
+		  "    vstrcfs %%v22,%%v17,%%v20,%%v21\n\t"		\
+		  "    jno 11f\n\t"					\
+		  "    vstrcfs %%v22,%%v18,%%v20,%%v21\n\t"		\
+		  "    jno 12f\n\t"					\
+		  "    vstrcfs %%v22,%%v19,%%v20,%%v21\n\t"		\
+		  "    jno 13f\n\t"					\
+		  /* Store 16bytes to outptr.  */			\
+		  "    vst %%v23,0(%[R_OUT])\n\t"			\
+		  "    aghi %[R_INLEN],-64\n\t"				\
+		  "    aghi %[R_OUTLEN],-16\n\t"			\
+		  "    la %[R_IN],64(%[R_IN])\n\t"			\
+		  "    la %[R_OUT],16(%[R_OUT])\n\t"			\
+		  "    clgijl %[R_INLEN],64,20f\n\t"			\
+		  "    clgijl %[R_OUTLEN],16,20f\n\t"			\
+		  "    j 1b\n\t"					\
+		  /* Found a value > 0x7f.  */				\
+		  "13: ahi %[R_TMP],4\n\t"				\
+		  "12: ahi %[R_TMP],4\n\t"				\
+		  "11: ahi %[R_TMP],4\n\t"				\
+		  "10: vlgvb %[R_I],%%v22,7\n\t"			\
+		  "    srlg %[R_I],%[R_I],2\n\t"			\
+		  "    agr %[R_I],%[R_TMP]\n\t"				\
+		  "    je 20f\n\t"					\
+		  /* Store characters before invalid one...  */		\
+		  "    slgr %[R_OUTLEN],%[R_I]\n\t"			\
+		  "15: aghi %[R_I],-1\n\t"				\
+		  "    vstl %%v23,%[R_I],0(%[R_OUT])\n\t"		\
+		  /* ... and update pointers.  */			\
+		  "    aghi %[R_I],1\n\t"				\
+		  "    la %[R_OUT],0(%[R_I],%[R_OUT])\n\t"		\
+		  "    sllg %[R_I],%[R_I],2\n\t"			\
+		  "    la %[R_IN],0(%[R_I],%[R_IN])\n\t"		\
+		  "    slgr %[R_INLEN],%[R_I]\n\t"			\
+		  /* Handle multibyte utf8-char with convert instruction. */ \
+		  "20: cu41 %[R_OUT],%[R_IN]\n\t"			\
+		  "    jo 0b\n\t" /* Try vector implemenation again.  */ \
+		  "    lochil %[R_RES],%[RES_OUT_FULL]\n\t" /* cc == 1.  */ \
+		  "    lochih %[R_RES],%[RES_IN_ILL]\n\t" /* cc == 2.  */ \
+		  ".machine pop"					\
+		  : /* outputs */ [R_IN] "+a" (pInput)			\
+		    , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (pOutput)	\
+		    , [R_OUTLEN] "+d" (outlen), [R_TMP] "=d" (tmp)	\
+		    , [R_I] "=a" (tmp2)					\
+		    , [R_RES] "+d" (result)				\
+		  : /* inputs */					\
+		    [RES_OUT_FULL] "i" (__GCONV_FULL_OUTPUT)		\
+		    , [RES_IN_ILL] "i" (__GCONV_ILLEGAL_INPUT)		\
+		  : /* clobber list */ "memory", "cc"			\
+		    ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17")	\
+		    ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19")	\
+		    ASM_CLOBBER_VR ("v20") ASM_CLOBBER_VR ("v21")	\
+		    ASM_CLOBBER_VR ("v22") ASM_CLOBBER_VR ("v23")	\
+		    ASM_CLOBBER_VR ("v24")				\
+		  );							\
+    inptr = pInput;							\
+    outptr = pOutput;							\
+  }
+
+/* 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 LOOPFCT			__to_utf8_loop_c
+#define BODY			BODY_TO_C
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+/* Generate loop-function with hardware utf-convert instruction.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+#define LOOPFCT			__to_utf8_loop_etf3eh
+#define LOOP_NEED_FLAGS
+#define BODY			BODY_TO_ETF3EH
+#include <iconv/loop.c>
+
+#if defined HAVE_S390_VX_ASM_SUPPORT
+/* Generate loop-function with hardware vector and utf-convert instructions.  */
+# define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+# define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+# define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+# define LOOPFCT		__to_utf8_loop_vx
+# define BODY			BODY_TO_VX
+# define LOOP_NEED_FLAGS
+# include <iconv/loop.c>
+#endif
+
+/* Generate ifunc'ed loop function.  */
+__typeof(__to_utf8_loop_c)
+__attribute__ ((ifunc ("__to_utf8_loop_resolver")))
+__to_utf8_loop;
+
+static void *
+__to_utf8_loop_resolver (unsigned long int dl_hwcap)
+{
+#if defined HAVE_S390_VX_ASM_SUPPORT
+  if (dl_hwcap & HWCAP_S390_VX)
+    return __to_utf8_loop_vx;
+  else
+#endif
+  if (dl_hwcap & HWCAP_S390_ZARCH && dl_hwcap & HWCAP_S390_HIGH_GPRS
+      && dl_hwcap & HWCAP_S390_ETF3EH)
+    return __to_utf8_loop_etf3eh;
+  else
+    return __to_utf8_loop_c;
+}
+
+strong_alias (__to_utf8_loop_c_single, __to_utf8_loop_single)
+
+
+#include <iconv/skeleton.c>