--- /dev/null
+/* Generic conversion to and from 8bit charsets - S390 version.
+ Copyright (C) 2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library 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.
+
+ The GNU C Library 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/>. */
+
+#if defined HAVE_S390_VX_ASM_SUPPORT
+
+# if defined HAVE_S390_VX_GCC_SUPPORT
+# define ASM_CLOBBER_VR(NR) , NR
+# else
+# define ASM_CLOBBER_VR(NR)
+# endif
+
+/* Generate the conversion loop routines without vector instructions as
+ fallback, if vector instructions aren't available at runtime. */
+# define IGNORE_ICONV_SKELETON
+# define from_generic __from_generic_c
+# define to_generic __to_generic_c
+# include "iconvdata/8bit-generic.c"
+# undef IGNORE_ICONV_SKELETON
+# undef from_generic
+# undef to_generic
+
+/* Generate the converion routines with vector instructions. The vector
+ routines can only be used with charsets where the maximum UCS4 value
+ fits in 1 byte size. Then the hardware translate-instruction is used
+ to translate between multiple generic characters and "1 byte UCS4"
+ characters at once. The vector instructions are used to convert between
+ the "1 byte UCS4" and UCS4. */
+# include <unistd.h>
+# include <dl-procinfo.h>
+
+# undef FROM_LOOP
+# undef TO_LOOP
+# define FROM_LOOP __from_generic_vx
+# define TO_LOOP __to_generic_vx
+
+# define MIN_NEEDED_FROM 1
+# define MIN_NEEDED_TO 4
+# define ONE_DIRECTION 0
+
+/* First define the conversion function from the 8bit charset to UCS4. */
+# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
+# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
+# define LOOPFCT FROM_LOOP
+# define BODY_FROM_ORIG \
+ { \
+ uint32_t ch = to_ucs4[*inptr]; \
+ \
+ if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && *inptr != '\0') \
+ { \
+ /* This is an illegal character. */ \
+ STANDARD_FROM_LOOP_ERR_HANDLER (1); \
+ } \
+ \
+ put32 (outptr, ch); \
+ outptr += 4; \
+ ++inptr; \
+ }
+
+# define BODY \
+ { \
+ if (__builtin_expect (inend - inptr < 16, 1) \
+ || outend - outptr < 64) \
+ /* Convert remaining bytes with c code. */ \
+ BODY_FROM_ORIG \
+ else \
+ { \
+ /* Convert 16 ... 256 bytes at once with tr-instruction. */ \
+ size_t index; \
+ char buf[256]; \
+ size_t loop_count = (inend - inptr) / 16; \
+ if (loop_count > (outend - outptr) / 64) \
+ loop_count = (outend - outptr) / 64; \
+ if (loop_count > 16) \
+ loop_count = 16; \
+ __asm__ volatile (".machine push\n\t" \
+ ".machine \"z13\"\n\t" \
+ ".machinemode \"zarch_nohighgprs\"\n\t" \
+ " sllk %[R_I],%[R_LI],4\n\t" \
+ " ahi %[R_I],-1\n\t" \
+ /* Execute mvc and tr with correct len. */ \
+ " exrl %[R_I],21f\n\t" \
+ " exrl %[R_I],22f\n\t" \
+ /* Post-processing. */ \
+ " lghi %[R_I],0\n\t" \
+ " vzero %%v0\n\t" \
+ "0: \n\t" \
+ /* Find invalid character - value is zero. */ \
+ " vl %%v16,0(%[R_I],%[R_BUF])\n\t" \
+ " vceqbs %%v23,%%v0,%%v16\n\t" \
+ " jle 10f\n\t" \
+ "1: \n\t" \
+ /* Enlarge to UCS4. */ \
+ " vuplhb %%v17,%%v16\n\t" \
+ " vupllb %%v18,%%v16\n\t" \
+ " vuplhh %%v19,%%v17\n\t" \
+ " vupllh %%v20,%%v17\n\t" \
+ " vuplhh %%v21,%%v18\n\t" \
+ " vupllh %%v22,%%v18\n\t" \
+ /* Store 64bytes to buf_out. */ \
+ " vstm %%v19,%%v22,0(%[R_OUT])\n\t" \
+ " aghi %[R_I],16\n\t" \
+ " la %[R_OUT],64(%[R_OUT])\n\t" \
+ " brct %[R_LI],0b\n\t" \
+ " la %[R_IN],0(%[R_I],%[R_IN])\n\t" \
+ " j 20f\n\t" \
+ "21: mvc 0(1,%[R_BUF]),0(%[R_IN])\n\t" \
+ "22: tr 0(1,%[R_BUF]),0(%[R_TBL])\n\t" \
+ /* Possibly invalid character found. */ \
+ "10: \n\t" \
+ /* Test if input was zero, too. */ \
+ " vl %%v24,0(%[R_I],%[R_IN])\n\t" \
+ " vceqb %%v24,%%v0,%%v24\n\t" \
+ /* Zeros in buf (v23) and inptr (v24) are marked \
+ with one bits. After xor, invalid characters \
+ are marked as one bits. Proceed, if no \
+ invalid characters are found. */ \
+ " vx %%v24,%%v23,%%v24\n\t" \
+ " vfenebs %%v24,%%v24,%%v0\n\t" \
+ " jo 1b\n\t" \
+ /* Found an invalid translation. \
+ Store the preceding chars. */ \
+ " la %[R_IN],0(%[R_I],%[R_IN])\n\t" \
+ " vlgvb %[R_I],%%v24,7\n\t" \
+ " la %[R_IN],0(%[R_I],%[R_IN])\n\t" \
+ " sll %[R_I],2\n\t" \
+ " ahi %[R_I],-1\n\t" \
+ " jl 20f\n\t" \
+ " lgr %[R_LI],%[R_I]\n\t" \
+ " vuplhb %%v17,%%v16\n\t" \
+ " vuplhh %%v19,%%v17\n\t" \
+ " vstl %%v19,%[R_I],0(%[R_OUT])\n\t" \
+ " ahi %[R_I],-16\n\t" \
+ " jl 11f\n\t" \
+ " vupllh %%v20,%%v17\n\t" \
+ " vstl %%v20,%[R_I],16(%[R_OUT])\n\t" \
+ " ahi %[R_I],-16\n\t" \
+ " jl 11f\n\t" \
+ " vupllb %%v18,%%v16\n\t" \
+ " vuplhh %%v21,%%v18\n\t" \
+ " vstl %%v21,%[R_I],32(%[R_OUT])\n\t" \
+ " ahi %[R_I],-16\n\t" \
+ " jl 11f\n\t" \
+ " vupllh %%v22,%%v18\n\t" \
+ " vstl %%v22,%[R_I],48(%[R_OUT])\n\t" \
+ "11: \n\t" \
+ " la %[R_OUT],1(%[R_LI],%[R_OUT])\n\t" \
+ "20: \n\t" \
+ ".machine pop" \
+ : /* outputs */ [R_IN] "+a" (inptr) \
+ , [R_OUT] "+a" (outptr), [R_I] "=&a" (index) \
+ , [R_LI] "+a" (loop_count) \
+ : /* inputs */ [R_BUF] "a" (buf) \
+ , [R_TBL] "a" (to_ucs1) \
+ : /* clobber list*/ "memory", "cc" \
+ ASM_CLOBBER_VR ("v0") 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") \
+ ); \
+ /* Error occured? */ \
+ if (loop_count != 0) \
+ { \
+ /* Found an invalid character! */ \
+ STANDARD_FROM_LOOP_ERR_HANDLER (1); \
+ } \
+ } \
+ }
+
+# define LOOP_NEED_FLAGS
+# include <iconv/loop.c>
+
+/* Next, define the other direction - from UCS4 to 8bit charset. */
+# define MIN_NEEDED_INPUT MIN_NEEDED_TO
+# define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
+# define LOOPFCT TO_LOOP
+# define BODY_TO_ORIG \
+ { \
+ uint32_t ch = get32 (inptr); \
+ \
+ if (__builtin_expect (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]), 0)\
+ || (__builtin_expect (from_ucs4[ch], '\1') == '\0' && ch != 0)) \
+ { \
+ UNICODE_TAG_HANDLER (ch, 4); \
+ \
+ /* This is an illegal character. */ \
+ STANDARD_TO_LOOP_ERR_HANDLER (4); \
+ } \
+ \
+ *outptr++ = from_ucs4[ch]; \
+ inptr += 4; \
+ }
+# define BODY \
+ { \
+ if (__builtin_expect (inend - inptr < 64, 1) \
+ || outend - outptr < 16) \
+ /* Convert remaining bytes with c code. */ \
+ BODY_TO_ORIG \
+ else \
+ { \
+ /* Convert 64 ... 1024 bytes at once with tr-instruction. */ \
+ size_t index, tmp; \
+ char buf[256]; \
+ size_t loop_count = (inend - inptr) / 64; \
+ uint32_t max = sizeof (from_ucs4) / sizeof (from_ucs4[0]); \
+ if (loop_count > (outend - outptr) / 16) \
+ loop_count = (outend - outptr) / 16; \
+ if (loop_count > 16) \
+ loop_count = 16; \
+ size_t remaining_loop_count = loop_count; \
+ /* Step 1: Check for ch>=max, ch == 0 and shorten to bytes. \
+ (ch == 0 is no error, but is handled differently) */ \
+ __asm__ volatile (".machine push\n\t" \
+ ".machine \"z13\"\n\t" \
+ ".machinemode \"zarch_nohighgprs\"\n\t" \
+ /* Setup to check for ch >= max. */ \
+ " vzero %%v21\n\t" \
+ " vleih %%v21,-24576,0\n\t" /* element 0: > */ \
+ " vleih %%v21,-8192,2\n\t" /* element 1: =<> */ \
+ " vlvgf %%v20,%[R_MAX],0\n\t" /* element 0: val */ \
+ /* Process in 64byte - 16 characters blocks. */ \
+ " lghi %[R_I],0\n\t" \
+ " lghi %[R_TMP],0\n\t" \
+ "0: \n\t" \
+ " vlm %%v16,%%v19,0(%[R_IN])\n\t" \
+ /* Test for ch >= max and ch == 0. */ \
+ " vstrczfs %%v22,%%v16,%%v20,%%v21\n\t" \
+ " jno 10f\n\t" \
+ " vstrczfs %%v22,%%v17,%%v20,%%v21\n\t" \
+ " jno 11f\n\t" \
+ " vstrczfs %%v22,%%v18,%%v20,%%v21\n\t" \
+ " jno 12f\n\t" \
+ " vstrczfs %%v22,%%v19,%%v20,%%v21\n\t" \
+ " jno 13f\n\t" \
+ /* Shorten to byte values. */ \
+ " vpkf %%v16,%%v16,%%v17\n\t" \
+ " vpkf %%v18,%%v18,%%v19\n\t" \
+ " vpkh %%v16,%%v16,%%v18\n\t" \
+ /* Store 16bytes to buf. */ \
+ " vst %%v16,0(%[R_I],%[R_BUF])\n\t" \
+ /* Loop until all blocks are processed. */ \
+ " la %[R_IN],64(%[R_IN])\n\t" \
+ " aghi %[R_I],16\n\t" \
+ " brct %[R_LI],0b\n\t" \
+ " j 20f\n\t" \
+ /* Found error ch >= max or ch == 0. */ \
+ "13: aghi %[R_TMP],4\n\t" \
+ "12: aghi %[R_TMP],4\n\t" \
+ "11: aghi %[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" \
+ "20: \n\t" \
+ ".machine pop" \
+ : /* outputs */ [R_IN] "+a" (inptr) \
+ , [R_I] "=&a" (index) \
+ , [R_TMP] "=d" (tmp) \
+ , [R_LI] "+d" (remaining_loop_count) \
+ : /* inputs */ [R_BUF] "a" (buf) \
+ , [R_MAX] "d" (max) \
+ : /* 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") \
+ ); \
+ /* Error occured in step 1? An error (ch >= max || ch == 0) \
+ occured, if remaining_loop_count > 0. The error occured \
+ at character-index (index) after already processed blocks. */ \
+ loop_count -= remaining_loop_count; \
+ if (loop_count > 0) \
+ { \
+ /* Step 2: Translate already processed blocks in buf and \
+ check for errors (from_ucs4[ch] == 0). */ \
+ __asm__ volatile (".machine push\n\t" \
+ ".machine \"z13\"\n\t" \
+ ".machinemode \"zarch_nohighgprs\"\n\t" \
+ " sllk %[R_I],%[R_LI],4\n\t" \
+ " ahi %[R_I],-1\n\t" \
+ /* Execute tr with correct len. */ \
+ " exrl %[R_I],21f\n\t" \
+ /* Post-processing. */ \
+ " lghi %[R_I],0\n\t" \
+ "0: \n\t" \
+ /* Find invalid character - value == 0. */ \
+ " vl %%v16,0(%[R_I],%[R_BUF])\n\t" \
+ " vfenezbs %%v17,%%v16,%%v16\n\t" \
+ " je 10f\n\t" \
+ /* Store 16bytes to buf_out. */ \
+ " vst %%v16,0(%[R_I],%[R_OUT])\n\t" \
+ " aghi %[R_I],16\n\t" \
+ " brct %[R_LI],0b\n\t" \
+ " la %[R_OUT],0(%[R_I],%[R_OUT])\n\t" \
+ " j 20f\n\t" \
+ "21: tr 0(1,%[R_BUF]),0(%[R_TBL])\n\t" \
+ /* Found an error: from_ucs4[ch] == 0. */ \
+ "10: la %[R_OUT],0(%[R_I],%[R_OUT])\n\t" \
+ " vlgvb %[R_I],%%v17,7\n\t" \
+ "20: \n\t" \
+ ".machine pop" \
+ : /* outputs */ [R_OUT] "+a" (outptr) \
+ , [R_I] "=&a" (tmp) \
+ , [R_LI] "+d" (loop_count) \
+ : /* inputs */ [R_BUF] "a" (buf) \
+ , [R_TBL] "a" (from_ucs4) \
+ : /* clobber list*/ "memory", "cc" \
+ ASM_CLOBBER_VR ("v16") \
+ ASM_CLOBBER_VR ("v17") \
+ ); \
+ /* Error occured in processed bytes of step 2? \
+ Thus possible error in step 1 is obselete.*/ \
+ if (tmp < 16) \
+ { \
+ index = tmp; \
+ inptr -= loop_count * 64; \
+ } \
+ } \
+ /* Error occured in step 1/2? */ \
+ if (index < 16) \
+ { \
+ /* Found an invalid character (see step 2) or zero \
+ (see step 1) at index! Convert the chars before index \
+ manually. If there is a zero at index detected by step 1, \
+ there could be invalid characters before this zero. */ \
+ int i; \
+ uint32_t ch; \
+ for (i = 0; i < index; i++) \
+ { \
+ ch = get32 (inptr); \
+ if (__builtin_expect (from_ucs4[ch], '\1') == '\0') \
+ break; \
+ *outptr++ = from_ucs4[ch]; \
+ inptr += 4; \
+ } \
+ if (i == index) \
+ { \
+ ch = get32 (inptr); \
+ if (ch == 0) \
+ { \
+ /* This is no error, but handled differently. */ \
+ *outptr++ = from_ucs4[ch]; \
+ inptr += 4; \
+ continue; \
+ } \
+ } \
+ \
+ UNICODE_TAG_HANDLER (ch, 4); \
+ \
+ /* This is an illegal character. */ \
+ STANDARD_TO_LOOP_ERR_HANDLER (4); \
+ } \
+ } \
+ }
+
+# define LOOP_NEED_FLAGS
+# include <iconv/loop.c>
+
+
+/* Generate ifunc'ed loop function. */
+__typeof(__from_generic_c)
+__attribute__ ((ifunc ("__from_generic_resolver")))
+__from_generic;
+
+static void *
+__from_generic_resolver (unsigned long int dl_hwcap)
+{
+ if (sizeof (from_ucs4) / sizeof (from_ucs4[0]) <= 256
+ && dl_hwcap & HWCAP_S390_VX)
+ return &__from_generic_vx;
+ else
+ return &__from_generic_c;
+}
+
+__typeof(__to_generic_c)
+__attribute__ ((ifunc ("__to_generic_resolver")))
+__to_generic;
+
+static void *
+__to_generic_resolver (unsigned long int dl_hwcap)
+{
+ if (sizeof (from_ucs4) / sizeof (from_ucs4[0]) <= 256
+ && dl_hwcap & HWCAP_S390_VX)
+ return &__to_generic_vx;
+ else
+ return &__to_generic_c;
+}
+
+strong_alias (__to_generic_c_single, __to_generic_single)
+
+# undef FROM_LOOP
+# undef TO_LOOP
+# define FROM_LOOP __from_generic
+# define TO_LOOP __to_generic
+# include <iconv/skeleton.c>
+
+#else
+/* Generate this module without ifunc if build environment lacks vector
+ support. Instead the common 8bit-generic.c is used. */
+# include "iconvdata/8bit-generic.c"
+#endif /* !defined HAVE_S390_VX_ASM_SUPPORT */
projects / thirdparty / glibc.git / commitdiff
