mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 23:00:22 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
403 lines
14 KiB
C
403 lines
14 KiB
C
/* Generic conversion to and from 8bit charsets - S390 version.
|
|
Copyright (C) 2016-2021 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
|
|
|
|
# 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 <ifunc-resolve.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; \
|
|
} \
|
|
} \
|
|
\
|
|
/* iconv/loop.c disables -Wmaybe-uninitialized for a false \
|
|
positive warning in this code with -Os and has a \
|
|
comment referencing this code accordingly. Updates in \
|
|
one place may require updates in the other. */ \
|
|
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. */
|
|
s390_libc_ifunc_expr (__from_generic_c, __from_generic,
|
|
(sizeof (from_ucs4) / sizeof (from_ucs4[0]) <= 256
|
|
&& hwcap & HWCAP_S390_VX)
|
|
? __from_generic_vx
|
|
: __from_generic_c);
|
|
|
|
s390_libc_ifunc_expr (__to_generic_c, __to_generic,
|
|
(sizeof (from_ucs4) / sizeof (from_ucs4[0]) <= 256
|
|
&& hwcap & HWCAP_S390_VX)
|
|
? __to_generic_vx
|
|
: __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 */
|