/* Conversion between UTF-16 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. */ #define HAVE_FROM_C 1 #define FROM_LOOP_DEFAULT FROM_LOOP_C #define HAVE_TO_C 1 #define TO_LOOP_DEFAULT TO_LOOP_C #if defined HAVE_S390_VX_ASM_SUPPORT && defined USE_MULTIARCH # define HAVE_FROM_VX 1 # define HAVE_FROM_VX_CU 1 # define HAVE_TO_VX 1 # define HAVE_TO_VX_CU 1 #else # define HAVE_FROM_VX 0 # define HAVE_FROM_VX_CU 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 /* UTF-32 big endian byte order mark. */ #define BOM_UTF32 0x0000feffu /* UTF-16 big endian byte order mark. */ #define BOM_UTF16 0xfeff #define DEFINE_INIT 0 #define DEFINE_FINI 0 #define MIN_NEEDED_FROM 2 #define MAX_NEEDED_FROM 4 #define MIN_NEEDED_TO 4 #define FROM_LOOP FROM_LOOP_DEFAULT #define TO_LOOP TO_LOOP_DEFAULT #define FROM_DIRECTION (dir == from_utf16) #define ONE_DIRECTION 0 /* Direction of the transformation. */ enum direction { illegal_dir, to_utf16, from_utf16 }; struct utf16_data { enum direction dir; int emit_bom; }; extern int gconv_init (struct __gconv_step *step); int gconv_init (struct __gconv_step *step) { /* Determine which direction. */ struct utf16_data *new_data; enum direction dir = illegal_dir; int emit_bom; int result; emit_bom = (__strcasecmp (step->__to_name, "UTF-32//") == 0 || __strcasecmp (step->__to_name, "UTF-16//") == 0); if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0 && (__strcasecmp (step->__to_name, "UTF-32//") == 0 || __strcasecmp (step->__to_name, "UTF-32BE//") == 0 || __strcasecmp (step->__to_name, "INTERNAL") == 0)) { dir = from_utf16; } else if ((__strcasecmp (step->__to_name, "UTF-16//") == 0 || __strcasecmp (step->__to_name, "UTF-16BE//") == 0) && (__strcasecmp (step->__from_name, "UTF-32BE//") == 0 || __strcasecmp (step->__from_name, "INTERNAL") == 0)) { dir = to_utf16; } result = __GCONV_NOCONV; if (dir != illegal_dir) { new_data = (struct utf16_data *) malloc (sizeof (struct utf16_data)); result = __GCONV_NOMEM; if (new_data != NULL) { new_data->dir = dir; new_data->emit_bom = emit_bom; step->__data = new_data; if (dir == from_utf16) { step->__min_needed_from = MIN_NEEDED_FROM; step->__max_needed_from = MIN_NEEDED_FROM; step->__min_needed_to = MIN_NEEDED_TO; step->__max_needed_to = MIN_NEEDED_TO; } else { step->__min_needed_from = MIN_NEEDED_TO; step->__max_needed_from = MIN_NEEDED_TO; step->__min_needed_to = MIN_NEEDED_FROM; step->__max_needed_to = MIN_NEEDED_FROM; } step->__stateful = 0; result = __GCONV_OK; } } return result; } extern void gconv_end (struct __gconv_step *data); void gconv_end (struct __gconv_step *data) { free (data->__data); } #define PREPARE_LOOP \ enum direction dir = ((struct utf16_data *) step->__data)->dir; \ int emit_bom = ((struct utf16_data *) step->__data)->emit_bom; \ \ if (emit_bom && !data->__internal_use \ && data->__invocation_counter == 0) \ { \ if (dir == to_utf16) \ { \ /* Emit the UTF-16 Byte Order Mark. */ \ if (__glibc_unlikely (outbuf + 2 > outend)) \ return __GCONV_FULL_OUTPUT; \ \ put16u (outbuf, BOM_UTF16); \ outbuf += 2; \ } \ else \ { \ /* Emit the UTF-32 Byte Order Mark. */ \ if (__glibc_unlikely (outbuf + 4 > outend)) \ return __GCONV_FULL_OUTPUT; \ \ put32u (outbuf, BOM_UTF32); \ outbuf += 4; \ } \ } /* Conversion function from UTF-16 to UTF-32 internal/BE. */ #if HAVE_FROM_C == 1 /* The software routine is copied from utf-16.c (minus bytes swapping). */ # define BODY_FROM_C \ { \ uint16_t u1 = get16 (inptr); \ \ if (__builtin_expect (u1 < 0xd800, 1) || u1 > 0xdfff) \ { \ /* No surrogate. */ \ put32 (outptr, u1); \ inptr += 2; \ } \ else \ { \ /* An isolated low-surrogate was found. This has to be \ considered ill-formed. */ \ if (__glibc_unlikely (u1 >= 0xdc00)) \ { \ STANDARD_FROM_LOOP_ERR_HANDLER (2); \ } \ /* It's a surrogate character. At least the first word says \ it is. */ \ if (__glibc_unlikely (inptr + 4 > inend)) \ { \ /* We don't have enough input for another complete input \ character. */ \ result = __GCONV_INCOMPLETE_INPUT; \ break; \ } \ \ inptr += 2; \ uint16_t u2 = get16 (inptr); \ if (__builtin_expect (u2 < 0xdc00, 0) \ || __builtin_expect (u2 > 0xdfff, 0)) \ { \ /* This is no valid second word for a surrogate. */ \ inptr -= 2; \ STANDARD_FROM_LOOP_ERR_HANDLER (2); \ } \ \ put32 (outptr, ((u1 - 0xd7c0) << 10) + (u2 - 0xdc00)); \ inptr += 2; \ } \ outptr += 4; \ } /* Generate loop-function with software routing. */ # define MIN_NEEDED_INPUT MIN_NEEDED_FROM # define MAX_NEEDED_INPUT MAX_NEEDED_FROM # define MIN_NEEDED_OUTPUT MIN_NEEDED_TO # define FROM_LOOP_C __from_utf16_loop_c # define LOOPFCT FROM_LOOP_C # define LOOP_NEED_FLAGS # define BODY BODY_FROM_C # include #else # define FROM_LOOP_C NULL #endif /* HAVE_FROM_C != 1 */ #if HAVE_FROM_VX == 1 # define BODY_FROM_VX \ { \ size_t inlen = inend - inptr; \ size_t outlen = outend - outptr; \ unsigned long tmp, tmp2, tmp3; \ asm volatile (".machine push\n\t" \ ".machine \"z13\"\n\t" \ ".machinemode \"zarch_nohighgprs\"\n\t" \ /* Setup to check for surrogates. */ \ " larl %[R_TMP],9f\n\t" \ " vlm %%v30,%%v31,0(%[R_TMP])\n\t" \ CONVERT_32BIT_SIZE_T ([R_INLEN]) \ CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \ /* Loop which handles UTF-16 chars <0xd800, >0xdfff. */ \ "0: clgijl %[R_INLEN],16,2f\n\t" \ " clgijl %[R_OUTLEN],32,2f\n\t" \ "1: vl %%v16,0(%[R_IN])\n\t" \ /* Check for surrogate chars. */ \ " vstrchs %%v19,%%v16,%%v30,%%v31\n\t" \ " jno 10f\n\t" \ /* Enlarge to UTF-32. */ \ " vuplhh %%v17,%%v16\n\t" \ " la %[R_IN],16(%[R_IN])\n\t" \ " vupllh %%v18,%%v16\n\t" \ " aghi %[R_INLEN],-16\n\t" \ /* Store 32 bytes to buf_out. */ \ " vstm %%v17,%%v18,0(%[R_OUT])\n\t" \ " aghi %[R_OUTLEN],-32\n\t" \ " la %[R_OUT],32(%[R_OUT])\n\t" \ " clgijl %[R_INLEN],16,2f\n\t" \ " clgijl %[R_OUTLEN],32,2f\n\t" \ " j 1b\n\t" \ /* Setup to check for ch >= 0xd800 && ch <= 0xdfff. (v30, v31) */ \ "9: .short 0xd800,0xdfff,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \ " .short 0xa000,0xc000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \ /* At least one uint16_t is in range of surrogates. \ Store the preceding chars. */ \ "10: vlgvb %[R_TMP],%%v19,7\n\t" \ " vuplhh %%v17,%%v16\n\t" \ " sllg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes. */ \ " ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store. */ \ " jl 12f\n\t" \ " vstl %%v17,%[R_TMP2],0(%[R_OUT])\n\t" \ " vupllh %%v18,%%v16\n\t" \ " ahi %[R_TMP2],-16\n\t" \ " jl 11f\n\t" \ " vstl %%v18,%[R_TMP2],16(%[R_OUT])\n\t" \ "11: \n\t" /* Update pointers. */ \ " la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \ " slgr %[R_INLEN],%[R_TMP]\n\t" \ " la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t" \ " slgr %[R_OUTLEN],%[R_TMP3]\n\t" \ /* Calculate remaining uint16_t values in loaded vrs. */ \ "12: lghi %[R_TMP2],16\n\t" \ " slgr %[R_TMP2],%[R_TMP]\n\t" \ " srl %[R_TMP2],1\n\t" \ " llh %[R_TMP],0(%[R_IN])\n\t" \ " aghi %[R_OUTLEN],-4\n\t" \ " j 16f\n\t" \ /* Handle remaining bytes. */ \ "2: \n\t" \ /* Zero, one or more bytes available? */ \ " clgfi %[R_INLEN],1\n\t" \ " je 97f\n\t" /* Only one byte available. */ \ " jl 99f\n\t" /* End if no bytes available. */ \ /* Calculate remaining uint16_t values in inptr. */ \ " srlg %[R_TMP2],%[R_INLEN],1\n\t" \ /* Handle remaining uint16_t values. */ \ "13: llh %[R_TMP],0(%[R_IN])\n\t" \ " slgfi %[R_OUTLEN],4\n\t" \ " jl 96f \n\t" \ " clfi %[R_TMP],0xd800\n\t" \ " jhe 15f\n\t" \ "14: st %[R_TMP],0(%[R_OUT])\n\t" \ " la %[R_IN],2(%[R_IN])\n\t" \ " aghi %[R_INLEN],-2\n\t" \ " la %[R_OUT],4(%[R_OUT])\n\t" \ " brctg %[R_TMP2],13b\n\t" \ " j 0b\n\t" /* Switch to vx-loop. */ \ /* Handle UTF-16 surrogate pair. */ \ "15: clfi %[R_TMP],0xdfff\n\t" \ " jh 14b\n\t" /* Jump away if ch > 0xdfff. */ \ "16: clfi %[R_TMP],0xdc00\n\t" \ " jhe 98f\n\t" /* Jump away in case of low-surrogate. */ \ " slgfi %[R_INLEN],4\n\t" \ " jl 97f\n\t" /* Big enough input? */ \ " llh %[R_TMP3],2(%[R_IN])\n\t" /* Load low surrogate. */ \ " slfi %[R_TMP],0xd7c0\n\t" \ " sll %[R_TMP],10\n\t" \ " risbgn %[R_TMP],%[R_TMP3],54,63,0\n\t" /* Insert klmnopqrst. */ \ " nilf %[R_TMP3],0xfc00\n\t" \ " clfi %[R_TMP3],0xdc00\n\t" /* Check if it starts with 0xdc00. */ \ " jne 98f\n\t" \ " st %[R_TMP],0(%[R_OUT])\n\t" \ " la %[R_IN],4(%[R_IN])\n\t" \ " la %[R_OUT],4(%[R_OUT])\n\t" \ " aghi %[R_TMP2],-2\n\t" \ " jh 13b\n\t" /* Handle remaining uint16_t values. */ \ " j 0b\n\t" /* Switch to vx-loop. */ \ "96: \n\t" /* Return full output. */ \ " lghi %[R_RES],%[RES_OUT_FULL]\n\t" \ " j 99f\n\t" \ "97: \n\t" /* Return incomplete input. */ \ " lghi %[R_RES],%[RES_IN_FULL]\n\t" \ " j 99f\n\t" \ "98:\n\t" /* Return Illegal character. */ \ " lghi %[R_RES],%[RES_IN_ILL]\n\t" \ "99:\n\t" \ ".machine pop" \ : /* outputs */ [R_IN] "+a" (inptr) \ , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr) \ , [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp) \ , [R_TMP2] "=d" (tmp2), [R_TMP3] "=a" (tmp3) \ , [R_RES] "+d" (result) \ : /* inputs */ \ [RES_OUT_FULL] "i" (__GCONV_FULL_OUTPUT) \ , [RES_IN_ILL] "i" (__GCONV_ILLEGAL_INPUT) \ , [RES_IN_FULL] "i" (__GCONV_INCOMPLETE_INPUT) \ : /* clobber list */ "memory", "cc" \ ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17") \ ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19") \ ASM_CLOBBER_VR ("v30") ASM_CLOBBER_VR ("v31") \ ); \ if (__glibc_likely (inptr == inend) \ || result != __GCONV_ILLEGAL_INPUT) \ break; \ \ STANDARD_FROM_LOOP_ERR_HANDLER (2); \ } /* Generate loop-function with hardware vector instructions. */ # define MIN_NEEDED_INPUT MIN_NEEDED_FROM # define MAX_NEEDED_INPUT MAX_NEEDED_FROM # define MIN_NEEDED_OUTPUT MIN_NEEDED_TO # define FROM_LOOP_VX __from_utf16_loop_vx # define LOOPFCT FROM_LOOP_VX # define LOOP_NEED_FLAGS # define BODY BODY_FROM_VX # include #else # define FROM_LOOP_VX NULL #endif /* HAVE_FROM_VX != 1 */ #if HAVE_FROM_VX_CU == 1 #define BODY_FROM_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 surrogates. */ \ " larl %[R_TMP],9f\n\t" \ " vlm %%v30,%%v31,0(%[R_TMP])\n\t" \ CONVERT_32BIT_SIZE_T ([R_INLEN]) \ CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \ /* Loop which handles UTF-16 chars <0xd800, >0xdfff. */ \ "0: clgijl %[R_INLEN],16,20f\n\t" \ " clgijl %[R_OUTLEN],32,20f\n\t" \ "1: vl %%v16,0(%[R_IN])\n\t" \ /* Check for surrogate chars. */ \ " vstrchs %%v19,%%v16,%%v30,%%v31\n\t" \ " jno 10f\n\t" \ /* Enlarge to UTF-32. */ \ " vuplhh %%v17,%%v16\n\t" \ " la %[R_IN],16(%[R_IN])\n\t" \ " vupllh %%v18,%%v16\n\t" \ " aghi %[R_INLEN],-16\n\t" \ /* Store 32 bytes to buf_out. */ \ " vstm %%v17,%%v18,0(%[R_OUT])\n\t" \ " aghi %[R_OUTLEN],-32\n\t" \ " la %[R_OUT],32(%[R_OUT])\n\t" \ " clgijl %[R_INLEN],16,20f\n\t" \ " clgijl %[R_OUTLEN],32,20f\n\t" \ " j 1b\n\t" \ /* Setup to check for ch >= 0xd800 && ch <= 0xdfff. (v30, v31) */ \ "9: .short 0xd800,0xdfff,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \ " .short 0xa000,0xc000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \ /* At least one uint16_t is in range of surrogates. \ Store the preceding chars. */ \ "10: vlgvb %[R_TMP],%%v19,7\n\t" \ " vuplhh %%v17,%%v16\n\t" \ " sllg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes. */ \ " ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store. */ \ " jl 20f\n\t" \ " vstl %%v17,%[R_TMP2],0(%[R_OUT])\n\t" \ " vupllh %%v18,%%v16\n\t" \ " ahi %[R_TMP2],-16\n\t" \ " jl 11f\n\t" \ " vstl %%v18,%[R_TMP2],16(%[R_OUT])\n\t" \ "11: \n\t" /* Update pointers. */ \ " la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \ " slgr %[R_INLEN],%[R_TMP]\n\t" \ " la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t" \ " slgr %[R_OUTLEN],%[R_TMP3]\n\t" \ /* Handles UTF16 surrogates with convert instruction. */ \ "20: cu24 %[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 cu24 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_FROM_LOOP_ERR_HANDLER (2); \ } /* 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_CU __from_utf16_loop_vx_cu # define LOOPFCT FROM_LOOP_VX_CU # define LOOP_NEED_FLAGS # define BODY BODY_FROM_VX_CU # include #else # define FROM_LOOP_VX_CU NULL #endif /* HAVE_FROM_VX_CU != 1 */ /* Conversion from UTF-32 internal/BE to UTF-16. */ #if HAVE_TO_C == 1 /* The software routine is copied from utf-16.c (minus bytes swapping). */ # define BODY_TO_C \ { \ uint32_t c = get32 (inptr); \ \ if (__builtin_expect (c <= 0xd7ff, 1) \ || (c > 0xdfff && c <= 0xffff)) \ { \ /* Two UTF-16 chars. */ \ put16 (outptr, c); \ } \ else if (__builtin_expect (c >= 0x10000, 1) \ && __builtin_expect (c <= 0x10ffff, 1)) \ { \ /* Four UTF-16 chars. */ \ uint16_t zabcd = ((c & 0x1f0000) >> 16) - 1; \ uint16_t out; \ \ /* Generate a surrogate character. */ \ if (__glibc_unlikely (outptr + 4 > outend)) \ { \ /* Overflow in the output buffer. */ \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ \ out = 0xd800; \ out |= (zabcd & 0xff) << 6; \ out |= (c >> 10) & 0x3f; \ put16 (outptr, out); \ outptr += 2; \ \ out = 0xdc00; \ out |= c & 0x3ff; \ put16 (outptr, out); \ } \ else \ { \ STANDARD_TO_LOOP_ERR_HANDLER (4); \ } \ outptr += 2; \ inptr += 4; \ } /* Generate loop-function with software routing. */ # define MIN_NEEDED_INPUT MIN_NEEDED_TO # define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM # define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM # define TO_LOOP_C __to_utf16_loop_c # define LOOPFCT TO_LOOP_C # define LOOP_NEED_FLAGS # define BODY BODY_TO_C # include #else # define TO_LOOP_C NULL #endif /* HAVE_TO_C != 1 */ #if HAVE_TO_VX == 1 # define BODY_TO_VX \ { \ size_t inlen = inend - inptr; \ size_t outlen = outend - outptr; \ unsigned long tmp, tmp2, tmp3; \ asm volatile (".machine push\n\t" \ ".machine \"z13\"\n\t" \ ".machinemode \"zarch_nohighgprs\"\n\t" \ /* Setup to check for surrogates. */ \ " larl %[R_TMP],9f\n\t" \ " vlm %%v30,%%v31,0(%[R_TMP])\n\t" \ CONVERT_32BIT_SIZE_T ([R_INLEN]) \ CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \ /* Loop which handles UTF-32 chars \ ch < 0xd800 || (ch > 0xdfff && ch < 0x10000). */ \ "0: clgijl %[R_INLEN],32,2f\n\t" \ " clgijl %[R_OUTLEN],16,2f\n\t" \ "1: vlm %%v16,%%v17,0(%[R_IN])\n\t" \ " lghi %[R_TMP2],0\n\t" \ /* Shorten to UTF-16. */ \ " vpkf %%v18,%%v16,%%v17\n\t" \ /* Check for surrogate chars. */ \ " vstrcfs %%v19,%%v16,%%v30,%%v31\n\t" \ " jno 10f\n\t" \ " vstrcfs %%v19,%%v17,%%v30,%%v31\n\t" \ " jno 11f\n\t" \ /* Store 16 bytes to buf_out. */ \ " vst %%v18,0(%[R_OUT])\n\t" \ " la %[R_IN],32(%[R_IN])\n\t" \ " aghi %[R_INLEN],-32\n\t" \ " aghi %[R_OUTLEN],-16\n\t" \ " la %[R_OUT],16(%[R_OUT])\n\t" \ " clgijl %[R_INLEN],32,2f\n\t" \ " clgijl %[R_OUTLEN],16,2f\n\t" \ " j 1b\n\t" \ /* Calculate remaining uint32_t values in inptr. */ \ "2: \n\t" \ " clgije %[R_INLEN],0,99f\n\t" \ " clgijl %[R_INLEN],4,92f\n\t" \ " srlg %[R_TMP2],%[R_INLEN],2\n\t" \ " j 20f\n\t" \ /* Setup to check for ch >= 0xd800 && ch <= 0xdfff \ and check for ch >= 0x10000. (v30, v31) */ \ "9: .long 0xd800,0xdfff,0x10000,0x10000\n\t" \ " .long 0xa0000000,0xc0000000, 0xa0000000,0xa0000000\n\t" \ /* At least on UTF32 char is in range of surrogates. \ Store the preceding characters. */ \ "11: ahi %[R_TMP2],16\n\t" \ "10: vlgvb %[R_TMP],%%v19,7\n\t" \ " agr %[R_TMP],%[R_TMP2]\n\t" \ " srlg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes. */ \ " ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store. */ \ " jl 12f\n\t" \ " vstl %%v18,%[R_TMP2],0(%[R_OUT])\n\t" \ /* Update pointers. */ \ " la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \ " slgr %[R_INLEN],%[R_TMP]\n\t" \ " la %[R_OUT],0(%[R_TMP3],%[R_OUT])\n\t" \ " slgr %[R_OUTLEN],%[R_TMP3]\n\t" \ /* Calculate remaining uint32_t values in vrs. */ \ "12: lghi %[R_TMP2],8\n\t" \ " srlg %[R_TMP3],%[R_TMP3],1\n\t" \ " slgr %[R_TMP2],%[R_TMP3]\n\t" \ /* Handle remaining UTF-32 characters. */ \ "20: l %[R_TMP],0(%[R_IN])\n\t" \ " aghi %[R_INLEN],-4\n\t" \ /* Test if ch is 2byte UTF-16 char. */ \ " clfi %[R_TMP],0xffff\n\t" \ " jh 21f\n\t" \ /* Handle 2 byte UTF16 char. */ \ " lgr %[R_TMP3],%[R_TMP]\n\t" \ " nilf %[R_TMP],0xf800\n\t" \ " clfi %[R_TMP],0xd800\n\t" \ " je 91f\n\t" /* Do not accept UTF-16 surrogates. */ \ " slgfi %[R_OUTLEN],2\n\t" \ " jl 90f \n\t" \ " sth %[R_TMP3],0(%[R_OUT])\n\t" \ " la %[R_IN],4(%[R_IN])\n\t" \ " la %[R_OUT],2(%[R_OUT])\n\t" \ " brctg %[R_TMP2],20b\n\t" \ " j 0b\n\t" /* Switch to vx-loop. */ \ /* Test if ch is 4byte UTF-16 char. */ \ "21: clfi %[R_TMP],0x10ffff\n\t" \ " jh 91f\n\t" /* ch > 0x10ffff is not allowed! */ \ /* Handle 4 byte UTF16 char. */ \ " slgfi %[R_OUTLEN],4\n\t" \ " jl 90f \n\t" \ " slfi %[R_TMP],0x10000\n\t" /* zabcd = uvwxy - 1. */ \ " llilf %[R_TMP3],0xd800dc00\n\t" \ " la %[R_IN],4(%[R_IN])\n\t" \ " risbgn %[R_TMP3],%[R_TMP],38,47,6\n\t" /* High surrogate. */ \ " risbgn %[R_TMP3],%[R_TMP],54,63,0\n\t" /* Low surrogate. */ \ " st %[R_TMP3],0(%[R_OUT])\n\t" \ " la %[R_OUT],4(%[R_OUT])\n\t" \ " brctg %[R_TMP2],20b\n\t" \ " j 0b\n\t" /* Switch to vx-loop. */ \ "92: lghi %[R_RES],%[RES_IN_FULL]\n\t" \ " j 99f\n\t" \ "91: lghi %[R_RES],%[RES_IN_ILL]\n\t" \ " j 99f\n\t" \ "90: lghi %[R_RES],%[RES_OUT_FULL]\n\t" \ "99: \n\t" \ ".machine pop" \ : /* outputs */ [R_IN] "+a" (inptr) \ , [R_INLEN] "+d" (inlen), [R_OUT] "+a" (outptr) \ , [R_OUTLEN] "+d" (outlen), [R_TMP] "=a" (tmp) \ , [R_TMP2] "=d" (tmp2), [R_TMP3] "=a" (tmp3) \ , [R_RES] "+d" (result) \ : /* inputs */ \ [RES_OUT_FULL] "i" (__GCONV_FULL_OUTPUT) \ , [RES_IN_ILL] "i" (__GCONV_ILLEGAL_INPUT) \ , [RES_IN_FULL] "i" (__GCONV_INCOMPLETE_INPUT) \ : /* clobber list */ "memory", "cc" \ ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17") \ ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19") \ ASM_CLOBBER_VR ("v30") ASM_CLOBBER_VR ("v31") \ ); \ if (__glibc_likely (inptr == inend) \ || result != __GCONV_ILLEGAL_INPUT) \ break; \ \ STANDARD_TO_LOOP_ERR_HANDLER (4); \ } /* Generate loop-function with hardware vector instructions. */ # define MIN_NEEDED_INPUT MIN_NEEDED_TO # define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM # define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM # define TO_LOOP_VX __to_utf16_loop_vx # define LOOPFCT TO_LOOP_VX # define LOOP_NEED_FLAGS # define BODY BODY_TO_VX # include #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 surrogates. */ \ " larl %[R_TMP],9f\n\t" \ " vlm %%v30,%%v31,0(%[R_TMP])\n\t" \ CONVERT_32BIT_SIZE_T ([R_INLEN]) \ CONVERT_32BIT_SIZE_T ([R_OUTLEN]) \ /* Loop which handles UTF-32 chars \ ch < 0xd800 || (ch > 0xdfff && ch < 0x10000). */ \ "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" \ /* Shorten to UTF-16. */ \ " vpkf %%v18,%%v16,%%v17\n\t" \ /* Check for surrogate chars. */ \ " vstrcfs %%v19,%%v16,%%v30,%%v31\n\t" \ " jno 10f\n\t" \ " vstrcfs %%v19,%%v17,%%v30,%%v31\n\t" \ " jno 11f\n\t" \ /* Store 16 bytes to buf_out. */ \ " vst %%v18,0(%[R_OUT])\n\t" \ " la %[R_IN],32(%[R_IN])\n\t" \ " aghi %[R_INLEN],-32\n\t" \ " aghi %[R_OUTLEN],-16\n\t" \ " la %[R_OUT],16(%[R_OUT])\n\t" \ " clgijl %[R_INLEN],32,20f\n\t" \ " clgijl %[R_OUTLEN],16,20f\n\t" \ " j 1b\n\t" \ /* Setup to check for ch >= 0xd800 && ch <= 0xdfff \ and check for ch >= 0x10000. (v30, v31) */ \ "9: .long 0xd800,0xdfff,0x10000,0x10000\n\t" \ " .long 0xa0000000,0xc0000000, 0xa0000000,0xa0000000\n\t" \ /* At least one UTF32 char is in range of surrogates. \ Store the preceding characters. */ \ "11: ahi %[R_TMP2],16\n\t" \ "10: vlgvb %[R_TMP],%%v19,7\n\t" \ " agr %[R_TMP],%[R_TMP2]\n\t" \ " srlg %[R_TMP3],%[R_TMP],1\n\t" /* Number of out bytes. */ \ " ahik %[R_TMP2],%[R_TMP3],-1\n\t" /* Highest index to store. */ \ " jl 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: cu42 %[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] "=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 < 4) \ { \ 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_utf16_loop_vx_cu # define LOOPFCT TO_LOOP_VX_CU # define LOOP_NEED_FLAGS # define BODY BODY_TO_VX_CU # 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