[thirdparty/glibc.git] / iconvdata / ibm1364.c

/* Conversion from and to IBM1364.
   Copyright (C) 2005 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Masahide Washizawa <washi@jp.ibm.com>, 2005.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <dlfcn.h>
#include <stdint.h>
#include <wchar.h>
#include <byteswap.h>

#ifndef CHARSET_NAME
/* This is really the IBM1364 converter, not another module sharing
   the code.  */
# define DATA_HEADER	"ibm1364.h"
# define CHARSET_NAME	"IBM1364//"
# define FROM_LOOP	from_ibm1364
# define TO_LOOP	to_ibm1364
# define SB_TO_UCS4	__ibm1364sb_to_ucs4
# define DB_TO_UCS4_IDX	__ibm1364db_to_ucs4_idx
# define DB_TO_UCS4	__ibm1364db_to_ucs4
# define UCS4_TO_SB_IDX	__ucs4_to_ibm1364sb_idx
# define UCS4_TO_SB	__ucs4_to_ibm1364sb
# define UCS4_TO_DB_IDX	__ucs4_to_ibm1364db_idx
# define UCS4_TO_DB	__ucs4_to_ibm1364db
# define UCS_LIMIT	0xffff
#endif


#include DATA_HEADER

/* The shift sequences for this charset (it does not use ESC).  */
#define SI 		0x0F  /* Shift In, host code to turn DBCS off.  */
#define SO 		0x0E  /* Shift Out, host code to turn DBCS on.  */

/* Definitions used in the body of the `gconv' function.  */
#define MIN_NEEDED_FROM	1
#define MAX_NEEDED_FROM	2
#define MIN_NEEDED_TO	4
#ifdef HAS_COMBINED
# define MAX_NEEDED_TO	8
#else
# define MAX_NEEDED_TO	4
#endif
#define PREPARE_LOOP \
  int save_curcs;							      \
  int *curcsp = &data->__statep->__count;
#define EXTRA_LOOP_ARGS		, curcsp

/* Definitions of initialization and destructor function.  */
#define DEFINE_INIT	1
#define DEFINE_FINI	1


/* Since this is a stateful encoding we have to provide code which resets
   the output state to the initial state.  This has to be done during the
   flushing.  */
#define EMIT_SHIFT_TO_INIT \
  if ((data->__statep->__count & ~7) != sb)				      \
    {									      \
      if (FROM_DIRECTION)						      \
	data->__statep->__count &= 7;					      \
      else								      \
	{								      \
	  /* We are not in the initial state.  To switch back we have	      \
	     to emit `SI'.  */						      \
	  if (__builtin_expect (outbuf >= outend, 0))			      \
	    /* We don't have enough room in the output buffer.  */	      \
	    status = __GCONV_FULL_OUTPUT;				      \
	  else								      \
	    {								      \
	      /* Write out the shift sequence.  */			      \
	      *outbuf++ = SI;						      \
	      data->__statep->__count &= 7;				      \
	    }								      \
	}								      \
    }


/* Since we might have to reset input pointer we must be able to save
   and retore the state.  */
#define SAVE_RESET_STATE(Save) \
  if (Save)								      \
    save_curcs = *curcsp;						      \
  else									      \
    *curcsp = save_curcs


/* Current codeset type.  */
enum
{
  sb = 0,
  db = 64
};


/* Subroutine to write out converted UCS4 from IBM-13XX.  */
#ifdef HAS_COMBINED
# define SUB_COMBINED_UCS_FROM_IBM13XX \
  {									      \
    if (res != UCS_LIMIT || ch < __TO_UCS4_COMBINED_MIN			      \
	|| ch > __TO_UCS4_COMBINED_MAX)					      \
      {									      \
	put32 (outptr, res);						      \
	outptr += 4;							      \
      }									      \
    else								      \
      {									      \
	/* This is a combined character.  Make sure we have room.  */	      \
	if (__builtin_expect (outptr + 8 > outend, 0))			      \
	  {								      \
	    result = __GCONV_FULL_OUTPUT;				      \
	    break;							      \
	  }								      \
									      \
	const struct divide *cmbp					      \
	  = &DB_TO_UCS4_COMB[ch - __TO_UCS4_COMBINED_MIN];		      \
	assert (cmbp->res1 != 0 && cmbp->res2 != 0);			      \
									      \
	put32 (outptr, cmbp->res1);					      \
	outptr += 4;							      \
	put32 (outptr, cmbp->res2);					      \
	outptr += 4;							      \
      }									      \
  }
#else
# define SUB_COMBINED_UCS_FROM_IBM13XX \
  {									      \
    put32 (outptr, res);						      \
    outptr += 4;							      \
  }
#endif /* HAS_COMBINED */


/* First, define the conversion function from IBM-13XX to UCS4.  */
#define MIN_NEEDED_INPUT  	MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT  	MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT 	MIN_NEEDED_TO
#define LOOPFCT 		FROM_LOOP
#define BODY \
  {									      \
    uint32_t ch = *inptr;						      \
									      \
    if (__builtin_expect (ch, 0) == SO)					      \
      {									      \
	/* Shift OUT, change to DBCS converter.  */			      \
	if (curcs == db)						      \
	  {								      \
	    result = __GCONV_ILLEGAL_INPUT;				      \
	    break;							      \
	  }								      \
	curcs = db;							      \
	++inptr;							      \
	continue;							      \
      }									      \
    if (__builtin_expect (ch, 0) == SI)					      \
      {									      \
	/* Shift IN, change to SBCS converter.  */			      \
	if (curcs == sb)						      \
	  {								      \
	    result = __GCONV_ILLEGAL_INPUT;				      \
	    break;							      \
	  }								      \
	curcs = sb;							      \
	++inptr;							      \
	continue;							      \
      }									      \
									      \
    if (curcs == sb)							      \
      {									      \
	/* Use the IBM13XX table for single byte.  */			      \
	uint32_t res = SB_TO_UCS4[ch];				      \
	if (__builtin_expect (res, L'\1') == L'\0' && ch != '\0')	      \
	  {								      \
	    /* This is an illegal character.  */			      \
	    if (! ignore_errors_p ())					      \
	      {								      \
		result = __GCONV_ILLEGAL_INPUT;				      \
		break;							      \
	      }								      \
	    ++*irreversible;						      \
	  }								      \
	else								      \
	  {								      \
	    put32 (outptr, res);					      \
	    outptr += 4;						      \
	  }								      \
	++inptr;							      \
      }									      \
    else								      \
      {									      \
	assert (curcs == db);						      \
									      \
	if (__builtin_expect (inptr + 1 >= inend, 0))			      \
	  {								      \
	    /* The second character is not available.  Store the	      \
	       intermediate result.  */					      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
									      \
	ch = (ch * 0x100) + inptr[1];					      \
									      \
	/* Use the IBM1364 table for double byte.  */			      \
	const struct gap *rp2 = DB_TO_UCS4_IDX;				      \
	while (ch > rp2->end)						      \
	  ++rp2;							      \
									      \
	uint32_t res;							      \
	if (__builtin_expect (ch < rp2->start, 0)			      \
	    || (res = DB_TO_UCS4[ch + rp2->idx],			      \
		__builtin_expect (res, L'\1') == L'\0' && ch != '\0'))	      \
	  {								      \
	    /* This is an illegal character.  */			      \
	    if (! ignore_errors_p ())					      \
	      {								      \
		result = __GCONV_ILLEGAL_INPUT;				      \
		break;							      \
	      }								      \
	    ++*irreversible;						      \
	  }								      \
	else								      \
	  {								      \
	    SUB_COMBINED_UCS_FROM_IBM13XX;				      \
	  }								      \
	inptr += 2;							      \
      }									      \
  }
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS	, int *curcsp
#define INIT_PARAMS		int curcs = *curcsp & ~7
#define UPDATE_PARAMS		*curcsp = curcs
#include <iconv/loop.c>


/* Subroutine to convert two UCS4 codes to IBM-13XX.  */
#ifdef HAS_COMBINED
# define SUB_COMBINED_UCS_TO_IBM13XX \
  {									      \
    const struct combine *cmbp = UCS4_COMB_TO_DB;			      \
    while (cmbp->res1 < ch)						      \
      ++cmbp;								      \
    /* XXX if last char is beginning of combining store in state */	      \
    if (cmbp->res1 == ch && inptr + 4 < inend)				      \
      {									      \
	/* See if input is part of a combined character.  */		      \
	uint32_t ch_next = get32 (inptr + 4);				      \
	while (cmbp->res2 != ch_next)					      \
	  {								      \
	    ++cmbp;							      \
	    if (cmbp->res1 != ch)					      \
	      goto not_combined;					      \
	  }								      \
									      \
	/* It is a combined character.  First make sure we are in	      \
	   double byte mode.  */					      \
	if (curcs == sb)						      \
	  {								      \
	    /* We know there is room for at least one byte.  */		      \
	    *outptr++ = SO;						      \
	    curcs = db;							      \
	  }								      \
									      \
	if (__builtin_expect (outptr + 2 > outend, 0))			      \
	  {								      \
	    result = __GCONV_FULL_OUTPUT;				      \
	    break;							      \
	  }								      \
	*outptr++ = cmbp->ch[0];					      \
	*outptr++ = cmbp->ch[1];					      \
	inptr += 8;							      \
	continue;							      \
									      \
      not_combined:;							      \
      }									      \
  }
#else
# define SUB_COMBINED_UCS_TO_IBM13XX
#endif /* HAS_COMBINED */


/* Next, define the other direction.  */
#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
#define LOOPFCT			TO_LOOP
#define BODY \
  {									      \
    uint32_t ch = get32 (inptr);					      \
									      \
    if (__builtin_expect (ch >= UCS_LIMIT, 0))				      \
      {									      \
	UNICODE_TAG_HANDLER (ch, 4);					      \
									      \
	if (! ignore_errors_p ())					      \
	  {								      \
	    result = __GCONV_ILLEGAL_INPUT;				      \
	    break;							      \
	  }								      \
	++*irreversible;						      \
	inptr += 4;							      \
	continue;							      \
      }									      \
									      \
    SUB_COMBINED_UCS_TO_IBM13XX;					      \
									      \
    const struct gap *rp1 = UCS4_TO_SB_IDX;				      \
    while (ch > rp1->end)						      \
      ++rp1;								      \
									      \
    /* Use the UCS4 table for single byte.  */				      \
    const char *cp;							      \
    if (__builtin_expect (ch < rp1->start, 0)				      \
	|| (cp = UCS4_TO_SB[ch + rp1->idx],				      \
	    __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0'))	      \
      {									      \
	/* Use the UCS4 table for double byte.  */			      \
	const struct gap *rp2 = UCS4_TO_DB_IDX;				      \
	while (ch > rp2->end)						      \
	  ++rp2;							      \
									      \
	if (__builtin_expect (ch < rp2->start, 0)			      \
	    || (cp = UCS4_TO_DB[ch + rp2->idx],				      \
		__builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0'))      \
	  {								      \
	    /* This is an illegal character.  */			      \
	    if (! ignore_errors_p ())					      \
	      {								      \
		result = __GCONV_ILLEGAL_INPUT;				      \
		break;							      \
	      }								      \
	    ++*irreversible;						      \
	  }								      \
	else								      \
	  {								      \
	    if (curcs == sb)						      \
	      {								      \
		/* We know there is room for at least one byte.  */	      \
		*outptr++ = SO;						      \
		curcs = db;						      \
	      }								      \
									      \
	    if (__builtin_expect (outptr + 2 > outend, 0))		      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	    *outptr++ = cp[0];						      \
	    *outptr++ = cp[1];						      \
	  }								      \
      }									      \
    else								      \
      {									      \
	if (__builtin_expect (curcs == db, 0))				      \
	  {								      \
	    /* We know there is room for at least one byte.  */		      \
	    *outptr++ = SI;						      \
	    curcs = sb;							      \
									      \
	    if (__builtin_expect (outptr >= outend, 0))			      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	  }								      \
									      \
	*outptr++ = cp[0];						      \
      }									      \
									      \
    /* Now that we wrote the output increment the input pointer.  */	      \
    inptr += 4;								      \
  }
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS	, int *curcsp
#define INIT_PARAMS		int curcs = *curcsp & ~7
#define UPDATE_PARAMS		*curcsp = curcs
#include <iconv/loop.c>

/* Now define the toplevel functions.  */
#include <iconv/skeleton.c>
Commit	Line	Data
0ecb606c JJ	1	/* Conversion from and to IBM1364.
	2	Copyright (C) 2005 Free Software Foundation, Inc.
	3	This file is part of the GNU C Library.
	4	Contributed by Masahide Washizawa <washi@jp.ibm.com>, 2005.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	Lesser General Public License for more details.
	15
	16	You should have received a copy of the GNU Lesser General Public
	17	License along with the GNU C Library; if not, write to the Free
	18	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	19	02111-1307 USA. */
	20
	21	#include <dlfcn.h>
	22	#include <stdint.h>
	23	#include <wchar.h>
	24	#include <byteswap.h>
	25
	26	#ifndef CHARSET_NAME
	27	/* This is really the IBM1364 converter, not another module sharing
	28	the code. */
	29	# define DATA_HEADER "ibm1364.h"
	30	# define CHARSET_NAME "IBM1364//"
	31	# define FROM_LOOP from_ibm1364
	32	# define TO_LOOP to_ibm1364
	33	# define SB_TO_UCS4 __ibm1364sb_to_ucs4
	34	# define DB_TO_UCS4_IDX __ibm1364db_to_ucs4_idx
	35	# define DB_TO_UCS4 __ibm1364db_to_ucs4
	36	# define UCS4_TO_SB_IDX __ucs4_to_ibm1364sb_idx
	37	# define UCS4_TO_SB __ucs4_to_ibm1364sb
	38	# define UCS4_TO_DB_IDX __ucs4_to_ibm1364db_idx
	39	# define UCS4_TO_DB __ucs4_to_ibm1364db
	40	# define UCS_LIMIT 0xffff
	41	#endif
	42
	43
	44	#include DATA_HEADER
	45
	46	/* The shift sequences for this charset (it does not use ESC). */
	47	#define SI 0x0F /* Shift In, host code to turn DBCS off. */
	48	#define SO 0x0E /* Shift Out, host code to turn DBCS on. */
	49
	50	/* Definitions used in the body of the `gconv' function. */
	51	#define MIN_NEEDED_FROM 1
	52	#define MAX_NEEDED_FROM 2
	53	#define MIN_NEEDED_TO 4
	54	#ifdef HAS_COMBINED
	55	# define MAX_NEEDED_TO 8
	56	#else
	57	# define MAX_NEEDED_TO 4
	58	#endif
	59	#define PREPARE_LOOP \
	60	int save_curcs; \
	61	int *curcsp = &data->__statep->__count;
	62	#define EXTRA_LOOP_ARGS , curcsp
	63
	64	/* Definitions of initialization and destructor function. */
65	#define DEFINE_INIT 1
66	#define DEFINE_FINI 1
67
68
69	/* Since this is a stateful encoding we have to provide code which resets
70	the output state to the initial state. This has to be done during the
71	flushing. */
72	#define EMIT_SHIFT_TO_INIT \
73	if ((data->__statep->__count & ~7) != sb) \
74	{ \
75	if (FROM_DIRECTION) \
76	data->__statep->__count &= 7; \
77	else \
78	{ \
79	/* We are not in the initial state. To switch back we have \
80	to emit `SI'. */ \
81	if (__builtin_expect (outbuf >= outend, 0)) \
82	/* We don't have enough room in the output buffer. */ \
83	status = __GCONV_FULL_OUTPUT; \
84	else \
85	{ \
86	/* Write out the shift sequence. */ \
87	*outbuf++ = SI; \
88	data->__statep->__count &= 7; \
89	} \
90	} \
91	}
92
93
94	/* Since we might have to reset input pointer we must be able to save
95	and retore the state. */
96	#define SAVE_RESET_STATE(Save) \
97	if (Save) \
98	save_curcs = *curcsp; \
99	else \
100	*curcsp = save_curcs
101
102
103	/* Current codeset type. */
104	enum
105	{
106	sb = 0,
107	db = 64
108	};
109
110
111	/* Subroutine to write out converted UCS4 from IBM-13XX. */
112	#ifdef HAS_COMBINED
113	# define SUB_COMBINED_UCS_FROM_IBM13XX \
114	{ \
115	if (res != UCS_LIMIT \|\| ch < __TO_UCS4_COMBINED_MIN \
116	\|\| ch > __TO_UCS4_COMBINED_MAX) \
117	{ \
118	put32 (outptr, res); \
119	outptr += 4; \
120	} \
121	else \
122	{ \
123	/* This is a combined character. Make sure we have room. */ \
124	if (__builtin_expect (outptr + 8 > outend, 0)) \
125	{ \
126	result = __GCONV_FULL_OUTPUT; \
127	break; \
128	} \
129	\
130	const struct divide *cmbp \
131	= &DB_TO_UCS4_COMB[ch - __TO_UCS4_COMBINED_MIN]; \
132	assert (cmbp->res1 != 0 && cmbp->res2 != 0); \
133	\
134	put32 (outptr, cmbp->res1); \
135	outptr += 4; \
136	put32 (outptr, cmbp->res2); \
137	outptr += 4; \
138	} \
139	}
140	#else
141	# define SUB_COMBINED_UCS_FROM_IBM13XX \
142	{ \
143	put32 (outptr, res); \
144	outptr += 4; \
145	}
146	#endif /* HAS_COMBINED */
147
148
149	/* First, define the conversion function from IBM-13XX to UCS4. */
150	#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
151	#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
152	#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
153	#define LOOPFCT FROM_LOOP
154	#define BODY \
155	{ \
156	uint32_t ch = *inptr; \
157	\
158	if (__builtin_expect (ch, 0) == SO) \
159	{ \
160	/* Shift OUT, change to DBCS converter. */ \
161	if (curcs == db) \
162	{ \
163	result = __GCONV_ILLEGAL_INPUT; \
164	break; \
165	} \
166	curcs = db; \
167	++inptr; \
168	continue; \
169	} \
170	if (__builtin_expect (ch, 0) == SI) \
171	{ \
172	/* Shift IN, change to SBCS converter. */ \
173	if (curcs == sb) \
174	{ \
175	result = __GCONV_ILLEGAL_INPUT; \
176	break; \
177	} \
178	curcs = sb; \
179	++inptr; \
180	continue; \
181	} \
182	\
183	if (curcs == sb) \
184	{ \
185	/* Use the IBM13XX table for single byte. */ \
186	uint32_t res = SB_TO_UCS4[ch]; \
187	if (__builtin_expect (res, L'\1') == L'\0' && ch != '\0') \
188	{ \
189	/* This is an illegal character. */ \
190	if (! ignore_errors_p ()) \
191	{ \
192	result = __GCONV_ILLEGAL_INPUT; \
193	break; \
194	} \
195	++*irreversible; \
196	} \
197	else \
198	{ \
199	put32 (outptr, res); \
200	outptr += 4; \
201	} \
202	++inptr; \
203	} \
204	else \
205	{ \
206	assert (curcs == db); \
207	\
208	if (__builtin_expect (inptr + 1 >= inend, 0)) \
209	{ \
210	/* The second character is not available. Store the \
211	intermediate result. */ \
212	result = __GCONV_INCOMPLETE_INPUT; \
213	break; \
214	} \
215	\
216	ch = (ch * 0x100) + inptr[1]; \
217	\
218	/* Use the IBM1364 table for double byte. */ \
219	const struct gap *rp2 = DB_TO_UCS4_IDX; \
220	while (ch > rp2->end) \
221	++rp2; \
222	\
223	uint32_t res; \
224	if (__builtin_expect (ch < rp2->start, 0) \
225	\|\| (res = DB_TO_UCS4[ch + rp2->idx], \
226	__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
227	{ \
228	/* This is an illegal character. */ \
229	if (! ignore_errors_p ()) \
230	{ \
231	result = __GCONV_ILLEGAL_INPUT; \
232	break; \
233	} \
234	++*irreversible; \
235	} \
236	else \
237	{ \
238	SUB_COMBINED_UCS_FROM_IBM13XX; \
239	} \
240	inptr += 2; \
241	} \
242	}
243	#define LOOP_NEED_FLAGS
244	#define EXTRA_LOOP_DECLS , int *curcsp
245	#define INIT_PARAMS int curcs = *curcsp & ~7
246	#define UPDATE_PARAMS *curcsp = curcs
247	#include <iconv/loop.c>
248
249
250	/* Subroutine to convert two UCS4 codes to IBM-13XX. */
251	#ifdef HAS_COMBINED
252	# define SUB_COMBINED_UCS_TO_IBM13XX \
253	{ \
254	const struct combine *cmbp = UCS4_COMB_TO_DB; \
255	while (cmbp->res1 < ch) \
256	++cmbp; \
257	/* XXX if last char is beginning of combining store in state */ \
258	if (cmbp->res1 == ch && inptr + 4 < inend) \
259	{ \
260	/* See if input is part of a combined character. */ \
261	uint32_t ch_next = get32 (inptr + 4); \
262	while (cmbp->res2 != ch_next) \
263	{ \
264	++cmbp; \
265	if (cmbp->res1 != ch) \
266	goto not_combined; \
267	} \
268	\
269	/* It is a combined character. First make sure we are in \
270	double byte mode. */ \
271	if (curcs == sb) \
272	{ \
273	/* We know there is room for at least one byte. */ \
274	*outptr++ = SO; \
275	curcs = db; \
276	} \
277	\
278	if (__builtin_expect (outptr + 2 > outend, 0)) \
279	{ \
280	result = __GCONV_FULL_OUTPUT; \
281	break; \
282	} \
283	*outptr++ = cmbp->ch[0]; \
284	*outptr++ = cmbp->ch[1]; \
285	inptr += 8; \
286	continue; \
287	\
288	not_combined:; \
289	} \
290	}
291	#else
292	# define SUB_COMBINED_UCS_TO_IBM13XX
293	#endif /* HAS_COMBINED */
294
295
296	/* Next, define the other direction. */
297	#define MIN_NEEDED_INPUT MIN_NEEDED_TO
298	#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
299	#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
300	#define LOOPFCT TO_LOOP
301	#define BODY \
302	{ \
303	uint32_t ch = get32 (inptr); \
304	\
305	if (__builtin_expect (ch >= UCS_LIMIT, 0)) \
306	{ \
307	UNICODE_TAG_HANDLER (ch, 4); \
308	\
309	if (! ignore_errors_p ()) \
310	{ \
311	result = __GCONV_ILLEGAL_INPUT; \
312	break; \
313	} \
314	++*irreversible; \
315	inptr += 4; \
316	continue; \
317	} \
318	\
319	SUB_COMBINED_UCS_TO_IBM13XX; \
320	\
321	const struct gap *rp1 = UCS4_TO_SB_IDX; \
322	while (ch > rp1->end) \
323	++rp1; \
324	\
325	/* Use the UCS4 table for single byte. */ \
326	const char *cp; \
327	if (__builtin_expect (ch < rp1->start, 0) \
328	\|\| (cp = UCS4_TO_SB[ch + rp1->idx], \
329	__builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
330	{ \
331	/* Use the UCS4 table for double byte. */ \
332	const struct gap *rp2 = UCS4_TO_DB_IDX; \
333	while (ch > rp2->end) \
334	++rp2; \
335	\
336	if (__builtin_expect (ch < rp2->start, 0) \
337	\|\| (cp = UCS4_TO_DB[ch + rp2->idx], \
338	__builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
339	{ \
340	/* This is an illegal character. */ \
341	if (! ignore_errors_p ()) \
342	{ \
343	result = __GCONV_ILLEGAL_INPUT; \
344	break; \
345	} \
346	++*irreversible; \
347	} \
348	else \
349	{ \
350	if (curcs == sb) \
351	{ \
352	/* We know there is room for at least one byte. */ \
353	*outptr++ = SO; \
354	curcs = db; \
355	} \
356	\
357	if (__builtin_expect (outptr + 2 > outend, 0)) \
358	{ \
359	result = __GCONV_FULL_OUTPUT; \
360	break; \
361	} \
362	*outptr++ = cp[0]; \
363	*outptr++ = cp[1]; \
364	} \
365	} \
366	else \
367	{ \
368	if (__builtin_expect (curcs == db, 0)) \
369	{ \
370	/* We know there is room for at least one byte. */ \
371	*outptr++ = SI; \
372	curcs = sb; \
373	\
374	if (__builtin_expect (outptr >= outend, 0)) \
375	{ \
376	result = __GCONV_FULL_OUTPUT; \
377	break; \
378	} \
379	} \
380	\
381	*outptr++ = cp[0]; \
382	} \
383	\
384	/* Now that we wrote the output increment the input pointer. */ \
385	inptr += 4; \
386	}
387	#define LOOP_NEED_FLAGS
388	#define EXTRA_LOOP_DECLS , int *curcsp
389	#define INIT_PARAMS int curcs = *curcsp & ~7
390	#define UPDATE_PARAMS *curcsp = curcs
391	#include <iconv/loop.c>
392
393	/* Now define the toplevel functions. */
394	#include <iconv/skeleton.c>