/* Conversion between UTF-8 and UTF-32 BE/internal. 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 6 #define MIN_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-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); \ } #if HAVE_FROM_C == 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); \ } /* 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 FROM_LOOP_C __from_utf8_loop_c # define LOOPFCT FROM_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 #else # define FROM_LOOP_C NULL #endif /* HAVE_FROM_C != 1 */ #if HAVE_FROM_CU == 1 /* This hardware routine uses the Convert UTF8 to UTF32 (cu14) instruction. */ # define BODY_FROM_ETF3EH BODY_FROM_HW (HARDWARE_CONVERT ("cu14 %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 FROM_LOOP_CU __from_utf8_loop_etf3eh # define LOOPFCT FROM_LOOP_CU # 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 #else # define FROM_LOOP_CU NULL #endif /* HAVE_FROM_CU != 1 */ #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],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) /* 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 FROM_LOOP_VX __from_utf8_loop_vx # define LOOPFCT FROM_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 #else # define FROM_LOOP_VX NULL #endif /* HAVE_FROM_VX != 1 */ #if HAVE_TO_C == 1 /* 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 <= 0xdfff) \ { \ /* 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; \ } /* 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_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 /* The hardware routine uses the S/390 vector instructions. */ # 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" \ " 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],64,2f\n\t" \ " clgijl %[R_OUTLEN],16,2f\n\t" \ "1: vlm %%v16,%%v19,0(%[R_IN])\n\t" \ " lghi %[R_TMP2],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],64,2f\n\t" \ " clgijl %[R_OUTLEN],16,2f\n\t" \ " j 1b\n\t" \ /* Found a value > 0x7f. */ \ "13: ahi %[R_TMP2],4\n\t" \ "12: ahi %[R_TMP2],4\n\t" \ "11: ahi %[R_TMP2],4\n\t" \ "10: vlgvb %[R_TMP],%%v22,7\n\t" \ " srlg %[R_TMP],%[R_TMP],2\n\t" \ " agr %[R_TMP],%[R_TMP2]\n\t" \ " je 16f\n\t" \ /* Store characters before invalid one... */ \ " slgr %[R_OUTLEN],%[R_TMP]\n\t" \ "15: aghi %[R_TMP],-1\n\t" \ " vstl %%v23,%[R_TMP],0(%[R_OUT])\n\t" \ /* ... and update pointers. */ \ " aghi %[R_TMP],1\n\t" \ " la %[R_OUT],0(%[R_TMP],%[R_OUT])\n\t" \ " sllg %[R_TMP2],%[R_TMP],2\n\t" \ " la %[R_IN],0(%[R_TMP2],%[R_IN])\n\t" \ " slgr %[R_INLEN],%[R_TMP2]\n\t" \ /* Calculate remaining uint32_t values in loaded vrs. */ \ "16: lghi %[R_TMP2],16\n\t" \ " sgr %[R_TMP2],%[R_TMP]\n\t" \ " l %[R_TMP],0(%[R_IN])\n\t" \ " aghi %[R_INLEN],-4\n\t" \ " j 22f\n\t" \ /* Handle remaining bytes. */ \ "2: clgije %[R_INLEN],0,99f\n\t" \ " clgijl %[R_INLEN],4,92f\n\t" \ /* Calculate remaining uint32_t values in inptr. */ \ " srlg %[R_TMP2],%[R_INLEN],2\n\t" \ /* Handle multibyte utf8-char. */ \ "20: l %[R_TMP],0(%[R_IN])\n\t" \ " aghi %[R_INLEN],-4\n\t" \ /* Test if ch is 1byte 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],4(%[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 2byte 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" \ " 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_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 3-byte UTF-8 char. */ \ "23: clfi %[R_TMP],0xffff\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" \ " 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. */ \ /* Test if ch is a UTF-16 surrogate: ch & 0xf800 == 0xd800 */ \ " nilf %[R_TMP],0xf800\n\t" \ " clfi %[R_TMP],0xd800\n\t" \ " je 91f\n\t" /* Do not accept UTF-16 surrogates. */ \ " stcm %[R_TMP3],7,0(%[R_OUT])\n\t" \ " la %[R_IN],4(%[R_IN])\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],0x10ffff\n\t" \ " jh 91f\n\t" /* ch > 0x10ffff is not allowed! */ \ /* Handle 4-byte UTF-8 char. */ \ "34: slgfi %[R_OUTLEN],4\n\t" \ " jl 90f \n\t" \ " llilf %[R_TMP3],0xf0808080\n\t" \ " risbgn %[R_TMP3],%[R_TMP],37,39,6\n\t" /* 1. byte. */ \ " risbgn %[R_TMP3],%[R_TMP],42,47,4\n\t" /* 2. byte. */ \ " risbgn %[R_TMP3],%[R_TMP],50,55,2\n\t" /* 3. byte. */ \ " risbgn %[R_TMP3],%[R_TMP],58,63,0\n\t" /* 4. byte. */ \ " st %[R_TMP3],0(%[R_OUT])\n\t" \ " la %[R_IN],4(%[R_IN])\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] "=a" (tmp2), [R_TMP3] "=d" (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 ("v20") ASM_CLOBBER_VR ("v21") \ ASM_CLOBBER_VR ("v22") ASM_CLOBBER_VR ("v23") \ ASM_CLOBBER_VR ("v24") \ ); \ 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_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; \ 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; \ \ 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); \ } /* 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 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