/* Conversion between UTF-8 and UTF-16 - s390 version. This module uses the Z9-109 variants of the Convert Unicode instructions. Copyright (C) 1997-2018 Free Software Foundation, Inc. Author: Andreas Krebbel Based on the work by Ulrich Drepper , 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 . */ #include #include #include #include #include /* Select which versions should be defined depending on support for multiarch, vector and used minimum architecture level. */ #ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT # define HAVE_FROM_C 0 # define FROM_LOOP_DEFAULT FROM_LOOP_CU #else # define HAVE_FROM_C 1 # define FROM_LOOP_DEFAULT FROM_LOOP_C #endif #define HAVE_TO_C 1 #define TO_LOOP_DEFAULT TO_LOOP_C #if defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT || defined USE_MULTIARCH # define HAVE_FROM_CU 1 #else # define HAVE_FROM_CU 0 #endif #if defined HAVE_S390_VX_ASM_SUPPORT && defined USE_MULTIARCH # define HAVE_FROM_VX 1 # define HAVE_TO_VX 1 # define HAVE_TO_VX_CU 1 #else # define HAVE_FROM_VX 0 # define HAVE_TO_VX 0 # define HAVE_TO_VX_CU 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 /* 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_LOOP_DEFAULT #define TO_LOOP TO_LOOP_DEFAULT #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); \ } #if HAVE_FROM_VX == 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) /* 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 FROM_LOOP_VX __from_utf8_loop_vx # define LOOPFCT FROM_LOOP_VX # define LOOP_NEED_FLAGS # define BODY BODY_FROM_VX # include #else # define FROM_LOOP_VX NULL #endif /* HAVE_FROM_VX != 1 */ #if HAVE_FROM_CU == 1 # define BODY_FROM_ETF3EH BODY_FROM_HW (HARDWARE_CONVERT ("cu12 %0, %1, 1")) /* 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 FROM_LOOP_CU __from_utf8_loop_etf3eh # define LOOPFCT FROM_LOOP_CU # define LOOP_NEED_FLAGS # define BODY BODY_FROM_ETF3EH # include #else # define FROM_LOOP_CU NULL #endif /* HAVE_FROM_CU != 1 */ #if HAVE_FROM_C == 1 /* 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 FROM_LOOP_C __from_utf8_loop_c # define LOOPFCT FROM_LOOP_C # define LOOP_NEED_FLAGS # define BODY BODY_FROM_C # include #else # define FROM_LOOP_C NULL #endif /* HAVE_FROM_C != 1 */ /* Conversion from UTF-16 to UTF-8. */ #if HAVE_TO_C == 1 /* 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; \ } /* 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 TO_LOOP_C __to_utf8_loop_c # define LOOPFCT TO_LOOP_C # define BODY BODY_TO_C # define LOOP_NEED_FLAGS # include #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 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 vector 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 TO_LOOP_VX __to_utf8_loop_vx # define LOOPFCT TO_LOOP_VX # define BODY BODY_TO_VX # define LOOP_NEED_FLAGS # include #else # define TO_LOOP_VX NULL #endif /* HAVE_TO_VX != 1 */ #if HAVE_TO_VX_CU == 1 #define BODY_TO_VX_CU \ { \ 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" \ /* 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],32,20f\n\t" \ " clgijl %[R_OUTLEN],16,20f\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],32,20f\n\t" \ " clgijl %[R_OUTLEN],16,20f\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: 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 20f\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" \ /* Handles UTF16 surrogates with convert instruction. */ \ "20: cu21 %[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; \ \ if (__glibc_likely (inlen == 0) \ || result == __GCONV_FULL_OUTPUT) \ break; \ if (inlen == 1) \ { \ /* Input does not contain a complete utf16 character. */ \ result = __GCONV_INCOMPLETE_INPUT; \ break; \ } \ else if (result != __GCONV_ILLEGAL_INPUT) \ { \ /* Input is >= 2 and < 4 bytes (as cu21 would have processed \ a possible next utf16 character) and not illegal. \ => we have a single high surrogate at end of input. */ \ result = __GCONV_INCOMPLETE_INPUT; \ break; \ } \ \ STANDARD_TO_LOOP_ERR_HANDLER (2); \ } /* Generate loop-function with vector and utf-convert instructions. */ # 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 TO_LOOP_VX_CU __to_utf8_loop_vx_cu # define LOOPFCT TO_LOOP_VX_CU # define BODY BODY_TO_VX_CU # define LOOP_NEED_FLAGS # include #else # define TO_LOOP_VX_CU NULL #endif /* HAVE_TO_VX_CU != 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 #endif