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-rw-r--r--sysdeps/s390/utf8-utf16-z9.c818
1 files changed, 818 insertions, 0 deletions
diff --git a/sysdeps/s390/utf8-utf16-z9.c b/sysdeps/s390/utf8-utf16-z9.c
new file mode 100644
index 0000000000..d3dc9bd97e
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+++ b/sysdeps/s390/utf8-utf16-z9.c
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+/* Conversion between UTF-16 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 4
+#define MIN_NEEDED_TO 2
+#define MAX_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-16 big endian byte order mark. */
+#define BOM_UTF16 0xfeff
+
+/* 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-16//") == 0);
+
+ if (__strcasecmp (step->__from_name, "ISO-10646/UTF8/") == 0
+ && (__strcasecmp (step->__to_name, "UTF-16//") == 0
+ || __strcasecmp (step->__to_name, "UTF-16BE//") == 0))
+ {
+ dir = from_utf8;
+ }
+ else if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0
+ && __strcasecmp (step->__to_name, "ISO-10646/UTF8/") == 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 UTF-16 Byte Order Mark. */ \
+ if (__glibc_unlikely (outbuf + 2 > outend)) \
+ return __GCONV_FULL_OUTPUT; \
+ \
+ put16u (outbuf, BOM_UTF16); \
+ outbuf += 2; \
+ }
+
+/* Conversion function from UTF-8 to UTF-16. */
+#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); \
+ }
+
+#define BODY_FROM_ETF3EH BODY_FROM_HW (HARDWARE_CONVERT ("cu12 %0, %1, 1"))
+
+#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],32,20f\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 UTF-16. */ \
+ " vuplhb %%v18,%%v16\n\t" \
+ " la %[R_IN],16(%[R_IN])\n\t" \
+ " vupllb %%v19,%%v16\n\t" \
+ " aghi %[R_INLEN],-16\n\t" \
+ /* Store 32 bytes to buf_out. */ \
+ " vstm %%v18,%%v19,0(%[R_OUT])\n\t" \
+ " aghi %[R_OUTLEN],-32\n\t" \
+ " la %[R_OUT],32(%[R_OUT])\n\t" \
+ " clgijl %[R_INLEN],16,20f\n\t" \
+ " clgijl %[R_OUTLEN],32,20f\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],1\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" \
+ " vstl %%v18,%[R_TMP2],0(%[R_OUT])\n\t" \
+ " ahi %[R_TMP2],-16\n\t" \
+ " jl 11f\n\t" \
+ " vupllb %%v19,%%v16\n\t" \
+ " vstl %%v19,%[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" \
+ /* Handle multibyte utf8-char with convert instruction. */ \
+ "20: cu12 %[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 ("v30") ASM_CLOBBER_VR ("v31") \
+ ); \
+ inptr = pInput; \
+ outptr = pOutput; \
+ }
+#define BODY_FROM_VX BODY_FROM_HW (HW_FROM_VX)
+
+
+/* The software implementation is based on the code in gconv_simple.c. */
+#define BODY_FROM_C \
+ { \
+ /* Next input byte. */ \
+ uint16_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; \
+ } \
+ \
+ if (cnt == 4) \
+ { \
+ /* For 4 byte UTF-8 chars two UTF-16 chars (high and \
+ low) are needed. */ \
+ uint16_t zabcd, high, low; \
+ \
+ if (__glibc_unlikely (outptr + 4 > outend)) \
+ { \
+ /* Overflow in the output buffer. */ \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ \
+ /* Check if tail-bytes >= 0x80, < 0xc0. */ \
+ for (i = 1; i < cnt; ++i) \
+ { \
+ if ((inptr[i] & 0xc0) != 0x80) \
+ /* This is an illegal encoding. */ \
+ goto errout; \
+ } \
+ \
+ /* See Principles of Operations cu12. */ \
+ zabcd = (((inptr[0] & 0x7) << 2) | \
+ ((inptr[1] & 0x30) >> 4)) - 1; \
+ \
+ /* z-bit must be zero after subtracting 1. */ \
+ if (zabcd & 0x10) \
+ STANDARD_FROM_LOOP_ERR_HANDLER (4) \
+ \
+ high = (uint16_t)(0xd8 << 8); /* high surrogate id */ \
+ high |= zabcd << 6; /* abcd bits */ \
+ high |= (inptr[1] & 0xf) << 2; /* efgh bits */ \
+ high |= (inptr[2] & 0x30) >> 4; /* ij bits */ \
+ \
+ low = (uint16_t)(0xdc << 8); /* low surrogate id */ \
+ low |= ((uint16_t)inptr[2] & 0xc) << 6; /* kl bits */ \
+ low |= (inptr[2] & 0x3) << 6; /* mn bits */ \
+ low |= inptr[3] & 0x3f; /* opqrst bits */ \
+ \
+ put16 (outptr, high); \
+ outptr += 2; \
+ put16 (outptr, low); \
+ outptr += 2; \
+ inptr += 4; \
+ continue; \
+ } \
+ else \
+ { \
+ /* Read the possible remaining bytes. */ \
+ for (i = 1; i < cnt; ++i) \
+ { \
+ uint16_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)) \
+ { \
+ /* This is an illegal encoding. */ \
+ goto errout; \
+ } \
+ \
+ inptr += cnt; \
+ } \
+ } \
+ /* Now adjust the pointers and store the result. */ \
+ *((uint16_t *) outptr) = ch; \
+ outptr += sizeof (uint16_t); \
+ }
+
+/* Generate loop-function with software implementation. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
+#define MAX_NEEDED_OUTPUT MAX_NEEDED_TO
+#define LOOPFCT __from_utf8_loop_c
+#define LOOP_NEED_FLAGS
+#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 MAX_NEEDED_OUTPUT MAX_NEEDED_TO
+#define LOOPFCT __from_utf8_loop_etf3eh
+#define LOOP_NEED_FLAGS
+#define BODY BODY_FROM_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_FROM
+# define MAX_NEEDED_INPUT MAX_NEEDED_FROM
+# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
+# define MAX_NEEDED_OUTPUT MAX_NEEDED_TO
+# define LOOPFCT __from_utf8_loop_vx
+# define LOOP_NEED_FLAGS
+# 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-16 to UTF-8. */
+
+/* The software routine is based on the functionality of the S/390
+ hardware instruction (cu21) as described in the Principles of
+ Operation. */
+#define BODY_TO_C \
+ { \
+ uint16_t c = get16 (inptr); \
+ \
+ if (__glibc_likely (c <= 0x007f)) \
+ { \
+ /* Single byte UTF-8 char. */ \
+ *outptr = c & 0xff; \
+ outptr++; \
+ } \
+ else if (c >= 0x0080 && c <= 0x07ff) \
+ { \
+ /* Two byte UTF-8 char. */ \
+ \
+ if (__glibc_unlikely (outptr + 2 > outend)) \
+ { \
+ /* Overflow in the output buffer. */ \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ \
+ outptr[0] = 0xc0; \
+ outptr[0] |= c >> 6; \
+ \
+ outptr[1] = 0x80; \
+ outptr[1] |= c & 0x3f; \
+ \
+ outptr += 2; \
+ } \
+ else if ((c >= 0x0800 && c <= 0xd7ff) || c > 0xdfff) \
+ { \
+ /* Three byte UTF-8 char. */ \
+ \
+ if (__glibc_unlikely (outptr + 3 > outend)) \
+ { \
+ /* Overflow in the output buffer. */ \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ outptr[0] = 0xe0; \
+ outptr[0] |= c >> 12; \
+ \
+ outptr[1] = 0x80; \
+ outptr[1] |= (c >> 6) & 0x3f; \
+ \
+ outptr[2] = 0x80; \
+ outptr[2] |= c & 0x3f; \
+ \
+ outptr += 3; \
+ } \
+ else if (c >= 0xd800 && c <= 0xdbff) \
+ { \
+ /* Four byte UTF-8 char. */ \
+ uint16_t low, uvwxy; \
+ \
+ if (__glibc_unlikely (outptr + 4 > outend)) \
+ { \
+ /* Overflow in the output buffer. */ \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ if (__glibc_unlikely (inptr + 4 > inend)) \
+ { \
+ result = __GCONV_INCOMPLETE_INPUT; \
+ break; \
+ } \
+ \
+ inptr += 2; \
+ low = get16 (inptr); \
+ \
+ if ((low & 0xfc00) != 0xdc00) \
+ { \
+ inptr -= 2; \
+ STANDARD_TO_LOOP_ERR_HANDLER (2); \
+ } \
+ uvwxy = ((c >> 6) & 0xf) + 1; \
+ outptr[0] = 0xf0; \
+ outptr[0] |= uvwxy >> 2; \
+ \
+ outptr[1] = 0x80; \
+ outptr[1] |= (uvwxy << 4) & 0x30; \
+ outptr[1] |= (c >> 2) & 0x0f; \
+ \
+ outptr[2] = 0x80; \
+ outptr[2] |= (c & 0x03) << 4; \
+ outptr[2] |= (low >> 6) & 0x0f; \
+ \
+ outptr[3] = 0x80; \
+ outptr[3] |= low & 0x3f; \
+ \
+ outptr += 4; \
+ } \
+ else \
+ { \
+ STANDARD_TO_LOOP_ERR_HANDLER (2); \
+ } \
+ inptr += 2; \
+ }
+
+#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 values <= 0x7f. */ \
+ " 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 <=0x7f. */ \
+ "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" \
+ /* Check for > 1byte UTF-8 chars. */ \
+ " vstrchs %%v19,%%v16,%%v30,%%v31\n\t" \
+ " jno 10f\n\t" /* Jump away if not all bytes are 1byte \
+ UTF8 chars. */ \
+ " vstrchs %%v19,%%v17,%%v30,%%v31\n\t" \
+ " jno 11f\n\t" /* Jump away if not all bytes are 1byte \
+ UTF8 chars. */ \
+ /* Shorten to UTF-8. */ \
+ " vpkh %%v18,%%v16,%%v17\n\t" \
+ " la %[R_IN],32(%[R_IN])\n\t" \
+ " aghi %[R_INLEN],-32\n\t" \
+ /* Store 16 bytes to buf_out. */ \
+ " vst %%v18,0(%[R_OUT])\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" \
+ /* Setup to check for ch > 0x7f. (v30, v31) */ \
+ "9: .short 0x7f,0x7f,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
+ " .short 0x2000,0x2000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
+ /* At least one byte is > 0x7f. \
+ Store the preceding 1-byte chars. */ \
+ "11: lghi %[R_TMP2],16\n\t" /* match was found in v17. */ \
+ "10:\n\t" \
+ " vlgvb %[R_TMP],%%v19,7\n\t" \
+ /* Shorten to UTF-8. */ \
+ " vpkh %%v18,%%v16,%%v17\n\t" \
+ " ar %[R_TMP],%[R_TMP2]\n\t" /* Number of in bytes. */ \
+ " 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 13f\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" \
+ "13: \n\t" \
+ /* Calculate remaining uint16_t values in loaded vrs. */ \
+ " lghi %[R_TMP2],16\n\t" \
+ " slgr %[R_TMP2],%[R_TMP3]\n\t" \
+ " llh %[R_TMP],0(%[R_IN])\n\t" \
+ " aghi %[R_INLEN],-2\n\t" \
+ " j 22f\n\t" \
+ /* Handle remaining bytes. */ \
+ "2: \n\t" \
+ /* Zero, one or more bytes available? */ \
+ " clgfi %[R_INLEN],1\n\t" \
+ " locghie %[R_RES],%[RES_IN_FULL]\n\t" /* Only one byte. */ \
+ " jle 99f\n\t" /* End if less than two bytes. */ \
+ /* Calculate remaining uint16_t values in inptr. */ \
+ " srlg %[R_TMP2],%[R_INLEN],1\n\t" \
+ /* Handle multibyte utf8-char. */ \
+ "20: llh %[R_TMP],0(%[R_IN])\n\t" \
+ " aghi %[R_INLEN],-2\n\t" \
+ /* Test if ch is 1-byte UTF-8 char. */ \
+ "21: clijh %[R_TMP],0x7f,22f\n\t" \
+ /* Handle 1-byte UTF-8 char. */ \
+ "31: slgfi %[R_OUTLEN],1\n\t" \
+ " jl 90f \n\t" \
+ " stc %[R_TMP],0(%[R_OUT])\n\t" \
+ " la %[R_IN],2(%[R_IN])\n\t" \
+ " la %[R_OUT],1(%[R_OUT])\n\t" \
+ " brctg %[R_TMP2],20b\n\t" \
+ " j 0b\n\t" /* Switch to vx-loop. */ \
+ /* Test if ch is 2-byte UTF-8 char. */ \
+ "22: clfi %[R_TMP],0x7ff\n\t" \
+ " jh 23f\n\t" \
+ /* Handle 2-byte UTF-8 char. */ \
+ "32: slgfi %[R_OUTLEN],2\n\t" \
+ " jl 90f \n\t" \
+ " llill %[R_TMP3],0xc080\n\t" \
+ " la %[R_IN],2(%[R_IN])\n\t" \
+ " risbgn %[R_TMP3],%[R_TMP],51,55,2\n\t" /* 1. byte. */ \
+ " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 2. byte. */ \
+ " sth %[R_TMP3],0(%[R_OUT])\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 3-byte UTF-8 char. */ \
+ "23: clfi %[R_TMP],0xd7ff\n\t" \
+ " jh 24f\n\t" \
+ /* Handle 3-byte UTF-8 char. */ \
+ "33: slgfi %[R_OUTLEN],3\n\t" \
+ " jl 90f \n\t" \
+ " llilf %[R_TMP3],0xe08080\n\t" \
+ " la %[R_IN],2(%[R_IN])\n\t" \
+ " risbgn %[R_TMP3],%[R_TMP],44,47,4\n\t" /* 1. byte. */ \
+ " risbgn %[R_TMP3],%[R_TMP],50,55,2\n\t" /* 2. byte. */ \
+ " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 3. byte. */ \
+ " stcm %[R_TMP3],7,0(%[R_OUT])\n\t" \
+ " la %[R_OUT],3(%[R_OUT])\n\t" \
+ " brctg %[R_TMP2],20b\n\t" \
+ " j 0b\n\t" /* Switch to vx-loop. */ \
+ /* Test if ch is 4-byte UTF-8 char. */ \
+ "24: clfi %[R_TMP],0xdfff\n\t" \
+ " jh 33b\n\t" /* Handle this 3-byte UTF-8 char. */ \
+ " clfi %[R_TMP],0xdbff\n\t" \
+ " locghih %[R_RES],%[RES_IN_ILL]\n\t" \
+ " jh 99f\n\t" /* Jump away if this is a low surrogate \
+ without a preceding high surrogate. */ \
+ /* Handle 4-byte UTF-8 char. */ \
+ "34: slgfi %[R_OUTLEN],4\n\t" \
+ " jl 90f \n\t" \
+ " slgfi %[R_INLEN],2\n\t" \
+ " locghil %[R_RES],%[RES_IN_FULL]\n\t" \
+ " jl 99f\n\t" /* Jump away if low surrogate is missing. */ \
+ " llilf %[R_TMP3],0xf0808080\n\t" \
+ " aghi %[R_TMP],0x40\n\t" \
+ " risbgn %[R_TMP3],%[R_TMP],37,39,16\n\t" /* 1. byte: uvw */ \
+ " risbgn %[R_TMP3],%[R_TMP],42,43,14\n\t" /* 2. byte: xy */ \
+ " risbgn %[R_TMP3],%[R_TMP],44,47,14\n\t" /* 2. byte: efgh */ \
+ " risbgn %[R_TMP3],%[R_TMP],50,51,12\n\t" /* 3. byte: ij */ \
+ " llh %[R_TMP],2(%[R_IN])\n\t" /* Load low surrogate. */ \
+ " risbgn %[R_TMP3],%[R_TMP],52,55,2\n\t" /* 3. byte: klmn */ \
+ " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 4. byte: opqrst */ \
+ " nilf %[R_TMP],0xfc00\n\t" \
+ " clfi %[R_TMP],0xdc00\n\t" /* Check if it starts with 0xdc00. */ \
+ " locghine %[R_RES],%[RES_IN_ILL]\n\t" \
+ " jne 99f\n\t" /* Jump away if low surrogate is invalid. */ \
+ " st %[R_TMP3],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 20b\n\t" \
+ " j 0b\n\t" /* Switch to vx-loop. */ \
+ /* Exit with __GCONV_FULL_OUTPUT. */ \
+ "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 (2); \
+ }
+
+/* Generate loop-function with software implementation. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_TO
+#define MAX_NEEDED_INPUT MAX_NEEDED_TO
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
+#if defined HAVE_S390_VX_ASM_SUPPORT
+# define LOOPFCT __to_utf8_loop_c
+# define BODY BODY_TO_C
+# define LOOP_NEED_FLAGS
+# include <iconv/loop.c>
+
+/* Generate loop-function with software implementation. */
+# define MIN_NEEDED_INPUT MIN_NEEDED_TO
+# define MAX_NEEDED_INPUT MAX_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>
+
+/* 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 (dl_hwcap & HWCAP_S390_VX)
+ return __to_utf8_loop_vx;
+ else
+ return __to_utf8_loop_c;
+}
+
+strong_alias (__to_utf8_loop_c_single, __to_utf8_loop_single)
+
+#else
+# define LOOPFCT TO_LOOP
+# define BODY BODY_TO_C
+# define LOOP_NEED_FLAGS
+# include <iconv/loop.c>
+#endif /* !HAVE_S390_VX_ASM_SUPPORT */
+
+#include <iconv/skeleton.c>