diff options
Diffstat (limited to 'sysdeps/s390/utf8-utf16-z9.c')
| -rw-r--r-- | sysdeps/s390/utf8-utf16-z9.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/sysdeps/s390/utf8-utf16-z9.c b/sysdeps/s390/utf8-utf16-z9.c index 42163e7..8486682 100644 --- a/sysdeps/s390/utf8-utf16-z9.c +++ b/sysdeps/s390/utf8-utf16-z9.c @@ -52,9 +52,11 @@ #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 @@ -817,6 +819,121 @@ gconv_end (struct __gconv_step *data) # 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 <iconv/loop.c> +#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. */ |