1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
|
/* Generic conversion to and from 8bit charsets - S390 version.
Copyright (C) 2016-2017 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 */
|
