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glibc/sysdeps/s390/multiarch/gconv_simple.c

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/* Simple transformations functions - s390 version.
Copyright (C) 2016-2024 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
<https://www.gnu.org/licenses/>. */
#if defined HAVE_S390_VX_ASM_SUPPORT
# include <ifunc-resolve.h>
# if defined HAVE_S390_VX_GCC_SUPPORT
# define ASM_CLOBBER_VR(NR) , NR
# else
# define ASM_CLOBBER_VR(NR)
# endif
# define ICONV_C_NAME(NAME) __##NAME##_c
# define ICONV_VX_NAME(NAME) __##NAME##_vx
# ifdef HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
/* We support z13 instructions by default -> Just use the vector variant. */
# define ICONV_VX_IFUNC(FUNC) strong_alias (ICONV_VX_NAME (FUNC), FUNC)
# else
/* We have to use ifunc to determine if z13 instructions are supported. */
# define ICONV_VX_IFUNC(FUNC) \
s390_libc_ifunc_expr (ICONV_C_NAME (FUNC), FUNC, \
(hwcap & HWCAP_S390_VX) \
? ICONV_VX_NAME (FUNC) \
: ICONV_C_NAME (FUNC) \
)
# endif
# define ICONV_VX_SINGLE(NAME) \
static __typeof (NAME##_single) __##NAME##_vx_single __attribute__((alias(#NAME "_single")));
/* Generate the transformations which are used, if the target machine does not
support vector instructions. */
# define __gconv_transform_ascii_internal \
ICONV_C_NAME (__gconv_transform_ascii_internal)
# define __gconv_transform_internal_ascii \
ICONV_C_NAME (__gconv_transform_internal_ascii)
# define __gconv_transform_internal_ucs4le \
ICONV_C_NAME (__gconv_transform_internal_ucs4le)
# define __gconv_transform_ucs4_internal \
ICONV_C_NAME (__gconv_transform_ucs4_internal)
# define __gconv_transform_ucs4le_internal \
ICONV_C_NAME (__gconv_transform_ucs4le_internal)
# define __gconv_transform_ucs2_internal \
ICONV_C_NAME (__gconv_transform_ucs2_internal)
# define __gconv_transform_ucs2reverse_internal \
ICONV_C_NAME (__gconv_transform_ucs2reverse_internal)
# define __gconv_transform_internal_ucs2 \
ICONV_C_NAME (__gconv_transform_internal_ucs2)
# define __gconv_transform_internal_ucs2reverse \
ICONV_C_NAME (__gconv_transform_internal_ucs2reverse)
# include <iconv/gconv_simple.c>
# undef __gconv_transform_ascii_internal
# undef __gconv_transform_internal_ascii
# undef __gconv_transform_internal_ucs4le
# undef __gconv_transform_ucs4_internal
# undef __gconv_transform_ucs4le_internal
# undef __gconv_transform_ucs2_internal
# undef __gconv_transform_ucs2reverse_internal
# undef __gconv_transform_internal_ucs2
# undef __gconv_transform_internal_ucs2reverse
/* Now define the functions with vector support. */
# if defined __s390x__
# define CONVERT_32BIT_SIZE_T(REG)
# else
# define CONVERT_32BIT_SIZE_T(REG) "llgfr %" #REG ",%" #REG "\n\t"
# endif
/* Convert from ISO 646-IRV to the internal (UCS4-like) format. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 1
# define MIN_NEEDED_TO 4
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (ascii_internal_loop)
# define TO_LOOP ICONV_VX_NAME (ascii_internal_loop) /* This is not used. */
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_ascii_internal)
# define ONE_DIRECTION 1
# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
# define LOOPFCT FROM_LOOP
# define BODY_ORIG_ERROR \
/* The value is too large. We don't try transliteration here since \
this is not an error because of the lack of possibilities to \
represent the result. This is a genuine bug in the input since \
ASCII does not allow such values. */ \
STANDARD_FROM_LOOP_ERR_HANDLER (1);
# define BODY_ORIG \
{ \
if (__glibc_unlikely (*inptr > '\x7f')) \
{ \
BODY_ORIG_ERROR \
} \
else \
{ \
/* It's an one byte sequence. */ \
*((uint32_t *) outptr) = *inptr++; \
outptr += sizeof (uint32_t); \
} \
}
# define BODY \
{ \
size_t len = inend - inptr; \
if (len > (outend - outptr) / 4) \
len = (outend - outptr) / 4; \
size_t loop_count, tmp; \
__asm__ volatile (".machine push\n\t" \
".machine \"z13\"\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
CONVERT_32BIT_SIZE_T ([R_LEN]) \
" vrepib %%v30,0x7f\n\t" /* For compare > 0x7f. */ \
" srlg %[R_LI],%[R_LEN],4\n\t" \
" vrepib %%v31,0x20\n\t" \
" clgije %[R_LI],0,1f\n\t" \
"0: \n\t" /* Handle 16-byte blocks. */ \
" vl %%v16,0(%[R_IN])\n\t" \
/* Checking for values > 0x7f. */ \
" vstrcbs %%v17,%%v16,%%v30,%%v31\n\t" \
" jno 10f\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" \
" la %[R_IN],16(%[R_IN])\n\t" \
" la %[R_OUT],64(%[R_OUT])\n\t" \
" brctg %[R_LI],0b\n\t" \
" lghi %[R_LI],15\n\t" \
" ngr %[R_LEN],%[R_LI]\n\t" \
" je 20f\n\t" /* Jump away if no remaining bytes. */ \
/* Handle remaining bytes. */ \
"1: aghik %[R_LI],%[R_LEN],-1\n\t" \
" jl 20f\n\t" /* Jump away if no remaining bytes. */ \
" vll %%v16,%[R_LI],0(%[R_IN])\n\t" \
/* Checking for values > 0x7f. */ \
" vstrcbs %%v17,%%v16,%%v30,%%v31\n\t" \
" vlgvb %[R_TMP],%%v17,7\n\t" \
" clr %[R_TMP],%[R_LI]\n\t" \
" locrh %[R_TMP],%[R_LEN]\n\t" \
" locghih %[R_LEN],0\n\t" \
" j 12f\n\t" \
"10:\n\t" \
/* Found a value > 0x7f. \
Store the preceding chars. */ \
" vlgvb %[R_TMP],%%v17,7\n\t" \
"12: la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \
" sllk %[R_TMP],%[R_TMP],2\n\t" \
" ahi %[R_TMP],-1\n\t" \
" jl 20f\n\t" \
" lgr %[R_LI],%[R_TMP]\n\t" \
" vuplhb %%v17,%%v16\n\t" \
" vuplhh %%v19,%%v17\n\t" \
" vstl %%v19,%[R_LI],0(%[R_OUT])\n\t" \
" ahi %[R_LI],-16\n\t" \
" jl 11f\n\t" \
" vupllh %%v20,%%v17\n\t" \
" vstl %%v20,%[R_LI],16(%[R_OUT])\n\t" \
" ahi %[R_LI],-16\n\t" \
" jl 11f\n\t" \
" vupllb %%v18,%%v16\n\t" \
" vuplhh %%v21,%%v18\n\t" \
" vstl %%v21,%[R_LI],32(%[R_OUT])\n\t" \
" ahi %[R_LI],-16\n\t" \
" jl 11f\n\t" \
" vupllh %%v22,%%v18\n\t" \
" vstl %%v22,%[R_LI],48(%[R_OUT])\n\t" \
"11:\n\t" \
" la %[R_OUT],1(%[R_TMP],%[R_OUT])\n\t" \
"20:\n\t" \
".machine pop" \
: /* outputs */ [R_OUT] "+a" (outptr) \
, [R_IN] "+a" (inptr) \
, [R_LEN] "+d" (len) \
, [R_LI] "=d" (loop_count) \
, [R_TMP] "=a" (tmp) \
: /* inputs */ \
: /* 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") \
); \
if (len > 0) \
{ \
/* Found an invalid character at the next input byte. */ \
BODY_ORIG_ERROR \
} \
}
# define LOOP_NEED_FLAGS
# include <iconv/loop.c>
# include <iconv/skeleton.c>
# undef BODY_ORIG
# undef BODY_ORIG_ERROR
ICONV_VX_IFUNC (__gconv_transform_ascii_internal)
/* Convert from the internal (UCS4-like) format to ISO 646-IRV. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 4
# define MIN_NEEDED_TO 1
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (internal_ascii_loop)
# define TO_LOOP ICONV_VX_NAME (internal_ascii_loop) /* This is not used. */
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_internal_ascii)
# define ONE_DIRECTION 1
# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
# define LOOPFCT FROM_LOOP
# define BODY_ORIG_ERROR \
UNICODE_TAG_HANDLER (*((const uint32_t *) inptr), 4); \
STANDARD_TO_LOOP_ERR_HANDLER (4);
# define BODY_ORIG \
{ \
if (__glibc_unlikely (*((const uint32_t *) inptr) > 0x7f)) \
{ \
BODY_ORIG_ERROR \
} \
else \
{ \
/* It's an one byte sequence. */ \
*outptr++ = *((const uint32_t *) inptr); \
inptr += sizeof (uint32_t); \
} \
}
# define BODY \
{ \
size_t len = (inend - inptr) / 4; \
if (len > outend - outptr) \
len = outend - outptr; \
size_t loop_count, tmp, tmp2; \
__asm__ volatile (".machine push\n\t" \
".machine \"z13\"\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
CONVERT_32BIT_SIZE_T ([R_LEN]) \
/* Setup to check for ch > 0x7f. */ \
" vzero %%v21\n\t" \
" srlg %[R_LI],%[R_LEN],4\n\t" \
" vleih %%v21,8192,0\n\t" /* element 0: > */ \
" vleih %%v21,-8192,2\n\t" /* element 1: =<> */ \
" vleif %%v20,127,0\n\t" /* element 0: 127 */ \
" lghi %[R_TMP],0\n\t" \
" clgije %[R_LI],0,1f\n\t" \
"0:\n\t" \
" vlm %%v16,%%v19,0(%[R_IN])\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" \
" la %[R_IN],64(%[R_IN])\n\t" \
" la %[R_OUT],16(%[R_OUT])\n\t" \
" brctg %[R_LI],0b\n\t" \
" lghi %[R_LI],15\n\t" \
" ngr %[R_LEN],%[R_LI]\n\t" \
" je 20f\n\t" /* Jump away if no remaining bytes. */ \
/* Handle remaining bytes. */ \
"1: sllg %[R_LI],%[R_LEN],2\n\t" \
" aghi %[R_LI],-1\n\t" \
" jl 20f\n\t" /* Jump away if no remaining bytes. */ \
/* Load remaining 1...63 bytes. */ \
" vll %%v16,%[R_LI],0(%[R_IN])\n\t" \
" ahi %[R_LI],-16\n\t" \
" jl 2f\n\t" \
" vll %%v17,%[R_LI],16(%[R_IN])\n\t" \
" ahi %[R_LI],-16\n\t" \
" jl 2f\n\t" \
" vll %%v18,%[R_LI],32(%[R_IN])\n\t" \
" ahi %[R_LI],-16\n\t" \
" jl 2f\n\t" \
" vll %%v19,%[R_LI],48(%[R_IN])\n\t" \
"2:\n\t" \
/* Shorten to byte values. */ \
" vpkf %%v23,%%v16,%%v17\n\t" \
" vpkf %%v24,%%v18,%%v19\n\t" \
" vpkh %%v23,%%v23,%%v24\n\t" \
" sllg %[R_LI],%[R_LEN],2\n\t" \
" aghi %[R_LI],-16\n\t" \
" jl 3f\n\t" /* v16 is not fully loaded. */ \
" vstrcfs %%v22,%%v16,%%v20,%%v21\n\t" \
" jno 10f\n\t" \
" aghi %[R_LI],-16\n\t" \
" jl 4f\n\t" /* v17 is not fully loaded. */ \
" vstrcfs %%v22,%%v17,%%v20,%%v21\n\t" \
" jno 11f\n\t" \
" aghi %[R_LI],-16\n\t" \
" jl 5f\n\t" /* v18 is not fully loaded. */ \
" vstrcfs %%v22,%%v18,%%v20,%%v21\n\t" \
" jno 12f\n\t" \
" aghi %[R_LI],-16\n\t" \
/* v19 is not fully loaded. */ \
" lghi %[R_TMP],12\n\t" \
" vstrcfs %%v22,%%v19,%%v20,%%v21\n\t" \
"6: vlgvb %[R_I],%%v22,7\n\t" \
" aghi %[R_LI],16\n\t" \
" clrjl %[R_I],%[R_LI],14f\n\t" \
" lgr %[R_I],%[R_LEN]\n\t" \
" lghi %[R_LEN],0\n\t" \
" j 15f\n\t" \
"3: vstrcfs %%v22,%%v16,%%v20,%%v21\n\t" \
" j 6b\n\t" \
"4: vstrcfs %%v22,%%v17,%%v20,%%v21\n\t" \
" lghi %[R_TMP],4\n\t" \
" j 6b\n\t" \
"5: vstrcfs %%v22,%%v17,%%v20,%%v21\n\t" \
" lghi %[R_TMP],8\n\t" \
" j 6b\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" \
"14: srlg %[R_I],%[R_I],2\n\t" \
" agr %[R_I],%[R_TMP]\n\t" \
" je 20f\n\t" \
/* Store characters before invalid one... */ \
"15: aghi %[R_I],-1\n\t" \
" vstl %%v23,%[R_I],0(%[R_OUT])\n\t" \
/* ... and update pointers. */ \
" la %[R_OUT],1(%[R_I],%[R_OUT])\n\t" \
" sllg %[R_I],%[R_I],2\n\t" \
" la %[R_IN],4(%[R_I],%[R_IN])\n\t" \
"20:\n\t" \
".machine pop" \
: /* outputs */ [R_OUT] "+a" (outptr) \
, [R_IN] "+a" (inptr) \
, [R_LEN] "+d" (len) \
, [R_LI] "=d" (loop_count) \
, [R_I] "=a" (tmp2) \
, [R_TMP] "=d" (tmp) \
: /* inputs */ \
: /* 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 (len > 0) \
{ \
/* Found an invalid character > 0x7f at next character. */ \
BODY_ORIG_ERROR \
} \
}
# define LOOP_NEED_FLAGS
# include <iconv/loop.c>
# include <iconv/skeleton.c>
# undef BODY_ORIG
# undef BODY_ORIG_ERROR
ICONV_VX_IFUNC (__gconv_transform_internal_ascii)
/* Convert from internal UCS4 to UCS4 little endian form. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 4
# define MIN_NEEDED_TO 4
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (internal_ucs4le_loop)
# define TO_LOOP ICONV_VX_NAME (internal_ucs4le_loop) /* This is not used. */
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_internal_ucs4le)
# define ONE_DIRECTION 0
static inline int
__attribute ((always_inline))
ICONV_VX_NAME (internal_ucs4le_loop) (struct __gconv_step *step,
struct __gconv_step_data *step_data,
const unsigned char **inptrp,
const unsigned char *inend,
unsigned char **outptrp,
const unsigned char *outend,
size_t *irreversible)
{
const unsigned char *inptr = *inptrp;
unsigned char *outptr = *outptrp;
int result;
size_t len = MIN (inend - inptr, outend - outptr) / 4;
size_t loop_count;
__asm__ volatile (".machine push\n\t"
".machine \"z13\"\n\t"
".machinemode \"zarch_nohighgprs\"\n\t"
CONVERT_32BIT_SIZE_T ([R_LEN])
" bras %[R_LI],1f\n\t"
/* Vector permute mask: */
" .long 0x03020100,0x7060504,0x0B0A0908,0x0F0E0D0C\n\t"
"1: vl %%v20,0(%[R_LI])\n\t"
/* Process 64byte (16char) blocks. */
" srlg %[R_LI],%[R_LEN],4\n\t"
" clgije %[R_LI],0,10f\n\t"
"0: vlm %%v16,%%v19,0(%[R_IN])\n\t"
" vperm %%v16,%%v16,%%v16,%%v20\n\t"
" vperm %%v17,%%v17,%%v17,%%v20\n\t"
" vperm %%v18,%%v18,%%v18,%%v20\n\t"
" vperm %%v19,%%v19,%%v19,%%v20\n\t"
" vstm %%v16,%%v19,0(%[R_OUT])\n\t"
" la %[R_IN],64(%[R_IN])\n\t"
" la %[R_OUT],64(%[R_OUT])\n\t"
" brctg %[R_LI],0b\n\t"
" llgfr %[R_LEN],%[R_LEN]\n\t"
" nilf %[R_LEN],15\n\t"
/* Process 16byte (4char) blocks. */
"10: srlg %[R_LI],%[R_LEN],2\n\t"
" clgije %[R_LI],0,20f\n\t"
"11: vl %%v16,0(%[R_IN])\n\t"
" vperm %%v16,%%v16,%%v16,%%v20\n\t"
" vst %%v16,0(%[R_OUT])\n\t"
" la %[R_IN],16(%[R_IN])\n\t"
" la %[R_OUT],16(%[R_OUT])\n\t"
" brctg %[R_LI],11b\n\t"
" nill %[R_LEN],3\n\t"
/* Process <16bytes. */
"20: sll %[R_LEN],2\n\t"
" ahi %[R_LEN],-1\n\t"
" jl 30f\n\t"
" vll %%v16,%[R_LEN],0(%[R_IN])\n\t"
" vperm %%v16,%%v16,%%v16,%%v20\n\t"
" vstl %%v16,%[R_LEN],0(%[R_OUT])\n\t"
" la %[R_IN],1(%[R_LEN],%[R_IN])\n\t"
" la %[R_OUT],1(%[R_LEN],%[R_OUT])\n\t"
"30: \n\t"
".machine pop"
: /* outputs */ [R_OUT] "+a" (outptr)
, [R_IN] "+a" (inptr)
, [R_LI] "=a" (loop_count)
, [R_LEN] "+a" (len)
: /* inputs */
: /* clobber list*/ "memory", "cc"
ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v17")
ASM_CLOBBER_VR ("v18") ASM_CLOBBER_VR ("v19")
ASM_CLOBBER_VR ("v20")
);
*inptrp = inptr;
*outptrp = outptr;
/* Determine the status. */
if (*inptrp == inend)
result = __GCONV_EMPTY_INPUT;
else if (*outptrp + 4 > outend)
result = __GCONV_FULL_OUTPUT;
else
result = __GCONV_INCOMPLETE_INPUT;
return result;
}
ICONV_VX_SINGLE (internal_ucs4le_loop)
# include <iconv/skeleton.c>
ICONV_VX_IFUNC (__gconv_transform_internal_ucs4le)
/* Transform from UCS4 to the internal, UCS4-like format. Unlike
for the other direction we have to check for correct values here. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 4
# define MIN_NEEDED_TO 4
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (ucs4_internal_loop)
# define TO_LOOP ICONV_VX_NAME (ucs4_internal_loop) /* This is not used. */
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_ucs4_internal)
# define ONE_DIRECTION 0
static inline int
__attribute ((always_inline))
ICONV_VX_NAME (ucs4_internal_loop) (struct __gconv_step *step,
struct __gconv_step_data *step_data,
const unsigned char **inptrp,
const unsigned char *inend,
unsigned char **outptrp,
const unsigned char *outend,
size_t *irreversible)
{
int flags = step_data->__flags;
const unsigned char *inptr = *inptrp;
unsigned char *outptr = *outptrp;
int result;
size_t len, loop_count;
do
{
len = MIN (inend - inptr, outend - outptr) / 4;
__asm__ volatile (".machine push\n\t"
".machine \"z13\"\n\t"
".machinemode \"zarch_nohighgprs\"\n\t"
CONVERT_32BIT_SIZE_T ([R_LEN])
/* Setup to check for ch > 0x7fffffff. */
" larl %[R_LI],9f\n\t"
" vlm %%v20,%%v21,0(%[R_LI])\n\t"
" srlg %[R_LI],%[R_LEN],2\n\t"
" clgije %[R_LI],0,1f\n\t"
/* Process 16byte (4char) blocks. */
"0: vl %%v16,0(%[R_IN])\n\t"
" vstrcfs %%v22,%%v16,%%v20,%%v21\n\t"
" jno 10f\n\t"
" vst %%v16,0(%[R_OUT])\n\t"
" la %[R_IN],16(%[R_IN])\n\t"
" la %[R_OUT],16(%[R_OUT])\n\t"
" brctg %[R_LI],0b\n\t"
" llgfr %[R_LEN],%[R_LEN]\n\t"
" nilf %[R_LEN],3\n\t"
/* Process <16bytes. */
"1: sll %[R_LEN],2\n\t"
" ahik %[R_LI],%[R_LEN],-1\n\t"
" jl 20f\n\t" /* No further bytes available. */
" vll %%v16,%[R_LI],0(%[R_IN])\n\t"
" vstrcfs %%v22,%%v16,%%v20,%%v21\n\t"
" vlgvb %[R_LI],%%v22,7\n\t"
" clr %[R_LI],%[R_LEN]\n\t"
" locgrhe %[R_LI],%[R_LEN]\n\t"
" locghihe %[R_LEN],0\n\t"
" j 11f\n\t"
/* v20: Vector string range compare values. */
"9: .long 0x7fffffff,0x0,0x0,0x0\n\t"
/* v21: Vector string range compare control-bits.
element 0: >; element 1: =<> (always true) */
" .long 0x20000000,0xE0000000,0x0,0x0\n\t"
/* Found a value > 0x7fffffff. */
"10: vlgvb %[R_LI],%%v22,7\n\t"
/* Store characters before invalid one. */
"11: aghi %[R_LI],-1\n\t"
" jl 20f\n\t"
" vstl %%v16,%[R_LI],0(%[R_OUT])\n\t"
" la %[R_IN],1(%[R_LI],%[R_IN])\n\t"
" la %[R_OUT],1(%[R_LI],%[R_OUT])\n\t"
"20:\n\t"
".machine pop"
: /* outputs */ [R_OUT] "+a" (outptr)
, [R_IN] "+a" (inptr)
, [R_LI] "=a" (loop_count)
, [R_LEN] "+d" (len)
: /* inputs */
: /* clobber list*/ "memory", "cc"
ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v20")
ASM_CLOBBER_VR ("v21") ASM_CLOBBER_VR ("v22")
);
if (len > 0)
{
/* The value is too large. We don't try transliteration here since
this is not an error because of the lack of possibilities to
represent the result. This is a genuine bug in the input since
UCS4 does not allow such values. */
if (irreversible == NULL)
/* We are transliterating, don't try to correct anything. */
return __GCONV_ILLEGAL_INPUT;
if (flags & __GCONV_IGNORE_ERRORS)
{
/* Just ignore this character. */
++*irreversible;
inptr += 4;
continue;
}
*inptrp = inptr;
*outptrp = outptr;
return __GCONV_ILLEGAL_INPUT;
}
}
while (len > 0);
*inptrp = inptr;
*outptrp = outptr;
/* Determine the status. */
if (*inptrp == inend)
result = __GCONV_EMPTY_INPUT;
else if (*outptrp + 4 > outend)
result = __GCONV_FULL_OUTPUT;
else
result = __GCONV_INCOMPLETE_INPUT;
return result;
}
ICONV_VX_SINGLE (ucs4_internal_loop)
# include <iconv/skeleton.c>
ICONV_VX_IFUNC (__gconv_transform_ucs4_internal)
/* Transform from UCS4-LE to the internal encoding. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 4
# define MIN_NEEDED_TO 4
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (ucs4le_internal_loop)
# define TO_LOOP ICONV_VX_NAME (ucs4le_internal_loop) /* This is not used. */
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_ucs4le_internal)
# define ONE_DIRECTION 0
static inline int
__attribute ((always_inline))
ICONV_VX_NAME (ucs4le_internal_loop) (struct __gconv_step *step,
struct __gconv_step_data *step_data,
const unsigned char **inptrp,
const unsigned char *inend,
unsigned char **outptrp,
const unsigned char *outend,
size_t *irreversible)
{
int flags = step_data->__flags;
const unsigned char *inptr = *inptrp;
unsigned char *outptr = *outptrp;
int result;
size_t len, loop_count;
do
{
len = MIN (inend - inptr, outend - outptr) / 4;
__asm__ volatile (".machine push\n\t"
".machine \"z13\"\n\t"
".machinemode \"zarch_nohighgprs\"\n\t"
CONVERT_32BIT_SIZE_T ([R_LEN])
/* Setup to check for ch > 0x7fffffff. */
" larl %[R_LI],9f\n\t"
" vlm %%v20,%%v22,0(%[R_LI])\n\t"
" srlg %[R_LI],%[R_LEN],2\n\t"
" clgije %[R_LI],0,1f\n\t"
/* Process 16byte (4char) blocks. */
"0: vl %%v16,0(%[R_IN])\n\t"
" vperm %%v16,%%v16,%%v16,%%v22\n\t"
" vstrcfs %%v23,%%v16,%%v20,%%v21\n\t"
" jno 10f\n\t"
" vst %%v16,0(%[R_OUT])\n\t"
" la %[R_IN],16(%[R_IN])\n\t"
" la %[R_OUT],16(%[R_OUT])\n\t"
" brctg %[R_LI],0b\n\t"
" llgfr %[R_LEN],%[R_LEN]\n\t"
" nilf %[R_LEN],3\n\t"
/* Process <16bytes. */
"1: sll %[R_LEN],2\n\t"
" ahik %[R_LI],%[R_LEN],-1\n\t"
" jl 20f\n\t" /* No further bytes available. */
" vll %%v16,%[R_LI],0(%[R_IN])\n\t"
" vperm %%v16,%%v16,%%v16,%%v22\n\t"
" vstrcfs %%v23,%%v16,%%v20,%%v21\n\t"
" vlgvb %[R_LI],%%v23,7\n\t"
" clr %[R_LI],%[R_LEN]\n\t"
" locgrhe %[R_LI],%[R_LEN]\n\t"
" locghihe %[R_LEN],0\n\t"
" j 11f\n\t"
/* v20: Vector string range compare values. */
"9: .long 0x7fffffff,0x0,0x0,0x0\n\t"
/* v21: Vector string range compare control-bits.
element 0: >; element 1: =<> (always true) */
" .long 0x20000000,0xE0000000,0x0,0x0\n\t"
/* v22: Vector permute mask. */
" .long 0x03020100,0x7060504,0x0B0A0908,0x0F0E0D0C\n\t"
/* Found a value > 0x7fffffff. */
"10: vlgvb %[R_LI],%%v23,7\n\t"
/* Store characters before invalid one. */
"11: aghi %[R_LI],-1\n\t"
" jl 20f\n\t"
" vstl %%v16,%[R_LI],0(%[R_OUT])\n\t"
" la %[R_IN],1(%[R_LI],%[R_IN])\n\t"
" la %[R_OUT],1(%[R_LI],%[R_OUT])\n\t"
"20:\n\t"
".machine pop"
: /* outputs */ [R_OUT] "+a" (outptr)
, [R_IN] "+a" (inptr)
, [R_LI] "=a" (loop_count)
, [R_LEN] "+d" (len)
: /* inputs */
: /* clobber list*/ "memory", "cc"
ASM_CLOBBER_VR ("v16") ASM_CLOBBER_VR ("v20")
ASM_CLOBBER_VR ("v21") ASM_CLOBBER_VR ("v22")
ASM_CLOBBER_VR ("v23")
);
if (len > 0)
{
/* The value is too large. We don't try transliteration here since
this is not an error because of the lack of possibilities to
represent the result. This is a genuine bug in the input since
UCS4 does not allow such values. */
if (irreversible == NULL)
/* We are transliterating, don't try to correct anything. */
return __GCONV_ILLEGAL_INPUT;
if (flags & __GCONV_IGNORE_ERRORS)
{
/* Just ignore this character. */
++*irreversible;
inptr += 4;
continue;
}
*inptrp = inptr;
*outptrp = outptr;
return __GCONV_ILLEGAL_INPUT;
}
}
while (len > 0);
*inptrp = inptr;
*outptrp = outptr;
/* Determine the status. */
if (*inptrp == inend)
result = __GCONV_EMPTY_INPUT;
else if (*inptrp + 4 > inend)
result = __GCONV_INCOMPLETE_INPUT;
else
{
assert (*outptrp + 4 > outend);
result = __GCONV_FULL_OUTPUT;
}
return result;
}
ICONV_VX_SINGLE (ucs4le_internal_loop)
# include <iconv/skeleton.c>
ICONV_VX_IFUNC (__gconv_transform_ucs4le_internal)
/* Convert from UCS2 to the internal (UCS4-like) format. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 2
# define MIN_NEEDED_TO 4
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (ucs2_internal_loop)
# define TO_LOOP ICONV_VX_NAME (ucs2_internal_loop) /* This is not used. */
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_ucs2_internal)
# define ONE_DIRECTION 1
# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
# define LOOPFCT FROM_LOOP
# define BODY_ORIG_ERROR \
/* Surrogate characters in UCS-2 input are not valid. Reject \
them. (Catching this here is not security relevant.) */ \
STANDARD_FROM_LOOP_ERR_HANDLER (2);
# define BODY_ORIG \
{ \
uint16_t u1 = get16 (inptr); \
\
if (__glibc_unlikely (u1 >= 0xd800 && u1 < 0xe000)) \
{ \
BODY_ORIG_ERROR \
} \
\
*((uint32_t *) outptr) = u1; \
outptr += sizeof (uint32_t); \
inptr += 2; \
}
# define BODY \
{ \
size_t len, tmp, tmp2; \
len = MIN ((inend - inptr) / 2, (outend - outptr) / 4); \
__asm__ volatile (".machine push\n\t" \
".machine \"z13\"\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
CONVERT_32BIT_SIZE_T ([R_LEN]) \
/* Setup to check for ch >= 0xd800 && ch < 0xe000. */ \
" larl %[R_TMP],9f\n\t" \
" vlm %%v20,%%v21,0(%[R_TMP])\n\t" \
" srlg %[R_TMP],%[R_LEN],3\n\t" \
" clgije %[R_TMP],0,1f\n\t" \
/* Process 16byte (8char) blocks. */ \
"0: vl %%v16,0(%[R_IN])\n\t" \
" vstrchs %%v19,%%v16,%%v20,%%v21\n\t" \
/* Enlarge UCS2 to UCS4. */ \
" vuplhh %%v17,%%v16\n\t" \
" vupllh %%v18,%%v16\n\t" \
" jno 10f\n\t" \
/* Store 32bytes to buf_out. */ \
" vstm %%v17,%%v18,0(%[R_OUT])\n\t" \
" la %[R_IN],16(%[R_IN])\n\t" \
" la %[R_OUT],32(%[R_OUT])\n\t" \
" brctg %[R_TMP],0b\n\t" \
" llgfr %[R_LEN],%[R_LEN]\n\t" \
" nilf %[R_LEN],7\n\t" \
/* Process <16bytes. */ \
"1: sll %[R_LEN],1\n\t" \
" ahik %[R_TMP],%[R_LEN],-1\n\t" \
" jl 20f\n\t" /* No further bytes available. */ \
" vll %%v16,%[R_TMP],0(%[R_IN])\n\t" \
" vstrchs %%v19,%%v16,%%v20,%%v21\n\t" \
/* Enlarge UCS2 to UCS4. */ \
" vuplhh %%v17,%%v16\n\t" \
" vupllh %%v18,%%v16\n\t" \
" vlgvb %[R_TMP],%%v19,7\n\t" \
" clr %[R_TMP],%[R_LEN]\n\t" \
" locgrhe %[R_TMP],%[R_LEN]\n\t" \
" locghihe %[R_LEN],0\n\t" \
" j 11f\n\t" \
/* v20: Vector string range compare values. */ \
"9: .short 0xd800,0xe000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
/* v21: Vector string range compare control-bits. \
element 0: =>; element 1: < */ \
" .short 0xa000,0x4000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
/* Found an element: ch >= 0xd800 && ch < 0xe000 */ \
"10: vlgvb %[R_TMP],%%v19,7\n\t" \
"11: la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \
" sll %[R_TMP],1\n\t" \
" lgr %[R_TMP2],%[R_TMP]\n\t" \
" ahi %[R_TMP],-1\n\t" \
" jl 20f\n\t" \
" vstl %%v17,%[R_TMP],0(%[R_OUT])\n\t" \
" ahi %[R_TMP],-16\n\t" \
" jl 19f\n\t" \
" vstl %%v18,%[R_TMP],16(%[R_OUT])\n\t" \
"19: la %[R_OUT],0(%[R_TMP2],%[R_OUT])\n\t" \
"20: \n\t" \
".machine pop" \
: /* outputs */ [R_OUT] "+a" (outptr) \
, [R_IN] "+a" (inptr) \
, [R_TMP] "=a" (tmp) \
, [R_TMP2] "=a" (tmp2) \
, [R_LEN] "+d" (len) \
: /* inputs */ \
: /* 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") \
); \
if (len > 0) \
{ \
/* Found an invalid character at next input-char. */ \
BODY_ORIG_ERROR \
} \
}
# define LOOP_NEED_FLAGS
# include <iconv/loop.c>
# include <iconv/skeleton.c>
# undef BODY_ORIG
# undef BODY_ORIG_ERROR
ICONV_VX_IFUNC (__gconv_transform_ucs2_internal)
/* Convert from UCS2 in other endianness to the internal (UCS4-like) format. */
# define DEFINE_INIT 0
# define DEFINE_FINI 0
# define MIN_NEEDED_FROM 2
# define MIN_NEEDED_TO 4
# define FROM_DIRECTION 1
# define FROM_LOOP ICONV_VX_NAME (ucs2reverse_internal_loop)
# define TO_LOOP ICONV_VX_NAME (ucs2reverse_internal_loop) /* This is not used.*/
# define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_ucs2reverse_internal)
# define ONE_DIRECTION 1
# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
# define LOOPFCT FROM_LOOP
# define BODY_ORIG_ERROR \
/* Surrogate characters in UCS-2 input are not valid. Reject \
them. (Catching this here is not security relevant.) */ \
if (! ignore_errors_p ()) \
{ \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
inptr += 2; \
++*irreversible; \
continue;
# define BODY_ORIG \
{ \
uint16_t u1 = bswap_16 (get16 (inptr)); \
\
if (__glibc_unlikely (u1 >= 0xd800 && u1 < 0xe000)) \
{ \
BODY_ORIG_ERROR \
} \
\
*((uint32_t *) outptr) = u1; \
outptr += sizeof (uint32_t); \
inptr += 2; \
}
# define BODY \
{ \
size_t len, tmp, tmp2; \
len = MIN ((inend - inptr) / 2, (outend - outptr) / 4); \
__asm__ volatile (".machine push\n\t" \
".machine \"z13\"\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
CONVERT_32BIT_SIZE_T ([R_LEN]) \
/* Setup to check for ch >= 0xd800 && ch < 0xe000. */ \
" larl %[R_TMP],9f\n\t" \
" vlm %%v20,%%v22,0(%[R_TMP])\n\t" \
" srlg %[R_TMP],%[R_LEN],3\n\t" \
" clgije %[R_TMP],0,1f\n\t" \
/* Process 16byte (8char) blocks. */ \
"0: vl %%v16,0(%[R_IN])\n\t" \
" vperm %%v16,%%v16,%%v16,%%v22\n\t" \
" vstrchs %%v19,%%v16,%%v20,%%v21\n\t" \
/* Enlarge UCS2 to UCS4. */ \
" vuplhh %%v17,%%v16\n\t" \
" vupllh %%v18,%%v16\n\t" \
" jno 10f\n\t" \
/* Store 32bytes to buf_out. */ \
" vstm %%v17,%%v18,0(%[R_OUT])\n\t" \
" la %[R_IN],16(%[R_IN])\n\t" \
" la %[R_OUT],32(%[R_OUT])\n\t" \
" brctg %[R_TMP],0b\n\t" \
" llgfr %[R_LEN],%[R_LEN]\n\t" \
" nilf %[R_LEN],7\n\t" \
/* Process <16bytes. */ \
"1: sll %[R_LEN],1\n\t" \
" ahik %[R_TMP],%[R_LEN],-1\n\t" \
" jl 20f\n\t" /* No further bytes available. */ \
" vll %%v16,%[R_TMP],0(%[R_IN])\n\t" \
" vperm %%v16,%%v16,%%v16,%%v22\n\t" \
" vstrchs %%v19,%%v16,%%v20,%%v21\n\t" \
/* Enlarge UCS2 to UCS4. */ \
" vuplhh %%v17,%%v16\n\t" \
" vupllh %%v18,%%v16\n\t" \
" vlgvb %[R_TMP],%%v19,7\n\t" \
" clr %[R_TMP],%[R_LEN]\n\t" \
" locgrhe %[R_TMP],%[R_LEN]\n\t" \
" locghihe %[R_LEN],0\n\t" \
" j 11f\n\t" \
/* v20: Vector string range compare values. */ \
"9: .short 0xd800,0xe000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
/* v21: Vector string range compare control-bits. \
element 0: =>; element 1: < */ \
" .short 0xa000,0x4000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
/* v22: Vector permute mask. */ \
" .short 0x0100,0x0302,0x0504,0x0706\n\t" \
" .short 0x0908,0x0b0a,0x0d0c,0x0f0e\n\t" \
/* Found an element: ch >= 0xd800 && ch < 0xe000 */ \
"10: vlgvb %[R_TMP],%%v19,7\n\t" \
"11: la %[R_IN],0(%[R_TMP],%[R_IN])\n\t" \
" sll %[R_TMP],1\n\t" \
" lgr %[R_TMP2],%[R_TMP]\n\t" \
" ahi %[R_TMP],-1\n\t" \
" jl 20f\n\t" \
" vstl %%v17,%[R_TMP],0(%[R_OUT])\n\t" \
" ahi %[R_TMP],-16\n\t" \
" jl 19f\n\t" \
" vstl %%v18,%[R_TMP],16(%[R_OUT])\n\t" \
"19: la %[R_OUT],0(%[R_TMP2],%[R_OUT])\n\t" \
"20: \n\t" \
".machine pop" \
: /* outputs */ [R_OUT] "+a" (outptr) \
, [R_IN] "+a" (inptr) \
, [R_TMP] "=a" (tmp) \
, [R_TMP2] "=a" (tmp2) \
, [R_LEN] "+d" (len) \
: /* inputs */ \
: /* 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") \
); \
if (len > 0) \
{ \
/* Found an invalid character at next input-char. */ \
BODY_ORIG_ERROR \
} \
}
# define LOOP_NEED_FLAGS
# include <iconv/loop.c>
# include <iconv/skeleton.c>
# undef BODY_ORIG
# undef BODY_ORIG_ERROR
ICONV_VX_IFUNC (__gconv_transform_ucs2reverse_internal)
/* Convert from the internal (UCS4-like) format to UCS2. */
#define DEFINE_INIT 0
#define DEFINE_FINI 0
#define MIN_NEEDED_FROM 4
#define MIN_NEEDED_TO 2
#define FROM_DIRECTION 1
#define FROM_LOOP ICONV_VX_NAME (internal_ucs2_loop)
#define TO_LOOP ICONV_VX_NAME (internal_ucs2_loop) /* This is not used. */
#define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_internal_ucs2)
#define ONE_DIRECTION 1
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
#define LOOPFCT FROM_LOOP
#define BODY_ORIG \
{ \
uint32_t val = *((const uint32_t *) inptr); \
\
if (__glibc_unlikely (val >= 0x10000)) \
{ \
UNICODE_TAG_HANDLER (val, 4); \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
else if (__glibc_unlikely (val >= 0xd800 && val < 0xe000)) \
{ \
/* Surrogate characters in UCS-4 input are not valid. \
We must catch this, because the UCS-2 output might be \
interpreted as UTF-16 by other programs. If we let \
surrogates pass through, attackers could make a security \
hole exploit by synthesizing any desired plane 1-16 \
character. */ \
result = __GCONV_ILLEGAL_INPUT; \
if (! ignore_errors_p ()) \
break; \
inptr += 4; \
++*irreversible; \
continue; \
} \
else \
{ \
put16 (outptr, val); \
outptr += sizeof (uint16_t); \
inptr += 4; \
} \
}
# define BODY \
{ \
if (__builtin_expect (inend - inptr < 32, 1) \
|| outend - outptr < 16) \
/* Convert remaining bytes with c code. */ \
BODY_ORIG \
else \
{ \
/* Convert in 32 byte blocks. */ \
size_t loop_count = (inend - inptr) / 32; \
size_t tmp, tmp2; \
if (loop_count > (outend - outptr) / 16) \
loop_count = (outend - outptr) / 16; \
__asm__ volatile (".machine push\n\t" \
".machine \"z13\"\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
CONVERT_32BIT_SIZE_T ([R_LI]) \
" larl %[R_I],3f\n\t" \
" vlm %%v20,%%v23,0(%[R_I])\n\t" \
"0: \n\t" \
" vlm %%v16,%%v17,0(%[R_IN])\n\t" \
/* Shorten UCS4 to UCS2. */ \
" vpkf %%v18,%%v16,%%v17\n\t" \
" vstrcfs %%v19,%%v16,%%v20,%%v21\n\t" \
" jno 11f\n\t" \
"1: vstrcfs %%v19,%%v17,%%v20,%%v21\n\t" \
" jno 10f\n\t" \
/* Store 16bytes to buf_out. */ \
"2: vst %%v18,0(%[R_OUT])\n\t" \
" la %[R_IN],32(%[R_IN])\n\t" \
" la %[R_OUT],16(%[R_OUT])\n\t" \
" brctg %[R_LI],0b\n\t" \
" j 20f\n\t" \
/* Setup to check for ch >= 0xd800. (v20, v21) */ \
"3: .long 0xd800,0xd800,0x0,0x0\n\t" \
" .long 0xa0000000,0xa0000000,0x0,0x0\n\t" \
/* Setup to check for ch >= 0xe000 \
&& ch < 0x10000. (v22,v23) */ \
" .long 0xe000,0x10000,0x0,0x0\n\t" \
" .long 0xa0000000,0x40000000,0x0,0x0\n\t" \
/* v16 contains only valid chars. Check in v17: \
ch >= 0xe000 && ch <= 0xffff. */ \
"10: vstrcfs %%v19,%%v17,%%v22,%%v23,8\n\t" \
" jo 2b\n\t" /* All ch's in this range, proceed. */ \
" lghi %[R_TMP],16\n\t" \
" j 12f\n\t" \
/* Maybe v16 contains invalid chars. \
Check ch >= 0xe000 && ch <= 0xffff. */ \
"11: vstrcfs %%v19,%%v16,%%v22,%%v23,8\n\t" \
" jo 1b\n\t" /* All ch's in this range, proceed. */ \
" lghi %[R_TMP],0\n\t" \
"12: vlgvb %[R_I],%%v19,7\n\t" \
" agr %[R_I],%[R_TMP]\n\t" \
" la %[R_IN],0(%[R_I],%[R_IN])\n\t" \
" srl %[R_I],1\n\t" \
" ahi %[R_I],-1\n\t" \
" jl 20f\n\t" \
" vstl %%v18,%[R_I],0(%[R_OUT])\n\t" \
" la %[R_OUT],1(%[R_I],%[R_OUT])\n\t" \
"20:\n\t" \
".machine pop" \
: /* outputs */ [R_OUT] "+a" (outptr) \
, [R_IN] "+a" (inptr) \
, [R_LI] "+d" (loop_count) \
, [R_I] "=a" (tmp2) \
, [R_TMP] "=d" (tmp) \
: /* inputs */ \
: /* 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") \
); \
if (loop_count > 0) \
{ \
/* Found an invalid character at next character. */ \
BODY_ORIG \
} \
} \
}
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>
#include <iconv/skeleton.c>
# undef BODY_ORIG
ICONV_VX_IFUNC (__gconv_transform_internal_ucs2)
/* Convert from the internal (UCS4-like) format to UCS2 in other endianness. */
#define DEFINE_INIT 0
#define DEFINE_FINI 0
#define MIN_NEEDED_FROM 4
#define MIN_NEEDED_TO 2
#define FROM_DIRECTION 1
#define FROM_LOOP ICONV_VX_NAME (internal_ucs2reverse_loop)
#define TO_LOOP ICONV_VX_NAME (internal_ucs2reverse_loop)/* This is not used.*/
#define FUNCTION_NAME ICONV_VX_NAME (__gconv_transform_internal_ucs2reverse)
#define ONE_DIRECTION 1
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
#define LOOPFCT FROM_LOOP
#define BODY_ORIG \
{ \
uint32_t val = *((const uint32_t *) inptr); \
if (__glibc_unlikely (val >= 0x10000)) \
{ \
UNICODE_TAG_HANDLER (val, 4); \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
else if (__glibc_unlikely (val >= 0xd800 && val < 0xe000)) \
{ \
/* Surrogate characters in UCS-4 input are not valid. \
We must catch this, because the UCS-2 output might be \
interpreted as UTF-16 by other programs. If we let \
surrogates pass through, attackers could make a security \
hole exploit by synthesizing any desired plane 1-16 \
character. */ \
if (! ignore_errors_p ()) \
{ \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
inptr += 4; \
++*irreversible; \
continue; \
} \
else \
{ \
put16 (outptr, bswap_16 (val)); \
outptr += sizeof (uint16_t); \
inptr += 4; \
} \
}
# define BODY \
{ \
if (__builtin_expect (inend - inptr < 32, 1) \
|| outend - outptr < 16) \
/* Convert remaining bytes with c code. */ \
BODY_ORIG \
else \
{ \
/* Convert in 32 byte blocks. */ \
size_t loop_count = (inend - inptr) / 32; \
size_t tmp, tmp2; \
if (loop_count > (outend - outptr) / 16) \
loop_count = (outend - outptr) / 16; \
__asm__ volatile (".machine push\n\t" \
".machine \"z13\"\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
CONVERT_32BIT_SIZE_T ([R_LI]) \
" larl %[R_I],3f\n\t" \
" vlm %%v20,%%v24,0(%[R_I])\n\t" \
"0: \n\t" \
" vlm %%v16,%%v17,0(%[R_IN])\n\t" \
/* Shorten UCS4 to UCS2 and byteswap. */ \
" vpkf %%v18,%%v16,%%v17\n\t" \
" vperm %%v18,%%v18,%%v18,%%v24\n\t" \
" vstrcfs %%v19,%%v16,%%v20,%%v21\n\t" \
" jno 11f\n\t" \
"1: vstrcfs %%v19,%%v17,%%v20,%%v21\n\t" \
" jno 10f\n\t" \
/* Store 16bytes to buf_out. */ \
"2: vst %%v18,0(%[R_OUT])\n\t" \
" la %[R_IN],32(%[R_IN])\n\t" \
" la %[R_OUT],16(%[R_OUT])\n\t" \
" brctg %[R_LI],0b\n\t" \
" j 20f\n\t" \
/* Setup to check for ch >= 0xd800. (v20, v21) */ \
"3: .long 0xd800,0xd800,0x0,0x0\n\t" \
" .long 0xa0000000,0xa0000000,0x0,0x0\n\t" \
/* Setup to check for ch >= 0xe000 \
&& ch < 0x10000. (v22,v23) */ \
" .long 0xe000,0x10000,0x0,0x0\n\t" \
" .long 0xa0000000,0x40000000,0x0,0x0\n\t" \
/* Vector permute mask (v24) */ \
" .short 0x0100,0x0302,0x0504,0x0706\n\t" \
" .short 0x0908,0x0b0a,0x0d0c,0x0f0e\n\t" \
/* v16 contains only valid chars. Check in v17: \
ch >= 0xe000 && ch <= 0xffff. */ \
"10: vstrcfs %%v19,%%v17,%%v22,%%v23,8\n\t" \
" jo 2b\n\t" /* All ch's in this range, proceed. */ \
" lghi %[R_TMP],16\n\t" \
" j 12f\n\t" \
/* Maybe v16 contains invalid chars. \
Check ch >= 0xe000 && ch <= 0xffff. */ \
"11: vstrcfs %%v19,%%v16,%%v22,%%v23,8\n\t" \
" jo 1b\n\t" /* All ch's in this range, proceed. */ \
" lghi %[R_TMP],0\n\t" \
"12: vlgvb %[R_I],%%v19,7\n\t" \
" agr %[R_I],%[R_TMP]\n\t" \
" la %[R_IN],0(%[R_I],%[R_IN])\n\t" \
" srl %[R_I],1\n\t" \
" ahi %[R_I],-1\n\t" \
" jl 20f\n\t" \
" vstl %%v18,%[R_I],0(%[R_OUT])\n\t" \
" la %[R_OUT],1(%[R_I],%[R_OUT])\n\t" \
"20:\n\t" \
".machine pop" \
: /* outputs */ [R_OUT] "+a" (outptr) \
, [R_IN] "+a" (inptr) \
, [R_LI] "+d" (loop_count) \
, [R_I] "=a" (tmp2) \
, [R_TMP] "=d" (tmp) \
: /* inputs */ \
: /* 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 (loop_count > 0) \
{ \
/* Found an invalid character at next character. */ \
BODY_ORIG \
} \
} \
}
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>
#include <iconv/skeleton.c>
# undef BODY_ORIG
ICONV_VX_IFUNC (__gconv_transform_internal_ucs2reverse)
#else
/* Generate the internal transformations without ifunc if build environment
lacks vector support. Instead simply include the common version. */
# include <iconv/gconv_simple.c>
#endif /* !defined HAVE_S390_VX_ASM_SUPPORT */
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