AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-23 13:30:06 +00:00
Code Issues Packages Projects Releases Wiki Activity
28e1ddf340
glibc/sysdeps/s390/utf16-utf32-z9.c
Stefan Liebler f0137ff31d S390: Use cu24 instruction for converting from utf16 to utf32. 
This patch adds an ifunc variant to use the cu instruction on arch12 CPUs.
This new ifunc variant can be built if binutils support z13 vector
instructions.  At runtime, HWCAP_S390_VXE decides if we can use the
cu24 instruction.

ChangeLog:

	* sysdeps/s390/utf16-utf32-z9.c (__from_utf16_loop_vx_cu):
	Use vector and cu24 instruction.
    	* sysdeps/s390/multiarch/utf16-utf32-z9.c:
    	Add __from_utf16_loop_vx_cu in ifunc resolver.
2017-06-27 17:09:43 +02:00

820 lines
29 KiB
C
Raw Blame History

/* Conversion between UTF-16 and UTF-32 BE/internal.
This module uses the Z9-109 variants of the Convert Unicode
instructions.
Copyright (C) 1997-2017 Free Software Foundation, Inc.
Author: Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
Based on the work by Ulrich Drepper <drepper@cygnus.com>, 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
<http://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <stdint.h>
#include <unistd.h>
#include <gconv.h>
#include <string.h>
/* 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 <iconv/loop.c>
#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 <iconv/loop.c>
#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 <iconv/loop.c>
#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 <iconv/loop.c>
#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 <iconv/loop.c>
#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 <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. */
#if ! defined USE_MULTIARCH
# include <iconv/skeleton.c>
#endif
Reference in New Issue View Git Blame Copy Permalink