/* Skeleton for a conversion module.
- Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1998-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ 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/>. */
/* This file can be included to provide definitions of several things
many modules have in common. It can be customized using the following
This macro is optional, it defaults to MIN_NEEDED_FROM.
MAX_NEEDED_TO likewise for the to-charset.
- DEFINE_DIRECTION_OBJECTS
- two objects will be defined to be used when the
- `gconv' function must only distinguish two
- directions. This is implied by DEFINE_INIT.
- If this macro is not defined the following
- macro must be available.
+ FROM_LOOP_MIN_NEEDED_FROM
+ FROM_LOOP_MAX_NEEDED_FROM
+ minimal/maximal number of bytes needed on input
+ of one round through the FROM_LOOP. Defaults
+ to MIN_NEEDED_FROM and MAX_NEEDED_FROM, respectively.
+ FROM_LOOP_MIN_NEEDED_TO
+ FROM_LOOP_MAX_NEEDED_TO
+ minimal/maximal number of bytes needed on output
+ of one round through the FROM_LOOP. Defaults
+ to MIN_NEEDED_TO and MAX_NEEDED_TO, respectively.
+ TO_LOOP_MIN_NEEDED_FROM
+ TO_LOOP_MAX_NEEDED_FROM
+ minimal/maximal number of bytes needed on input
+ of one round through the TO_LOOP. Defaults
+ to MIN_NEEDED_TO and MAX_NEEDED_TO, respectively.
+ TO_LOOP_MIN_NEEDED_TO
+ TO_LOOP_MAX_NEEDED_TO
+ minimal/maximal number of bytes needed on output
+ of one round through the TO_LOOP. Defaults
+ to MIN_NEEDED_FROM and MAX_NEEDED_FROM, respectively.
FROM_DIRECTION this macro is supposed to return a value != 0
if we convert from the current character set,
EMIT_SHIFT_TO_INIT this symbol is optional. If it is defined it
defines some code which writes out a sequence
- of characters which bring the current state into
+ of bytes which bring the current state into
the initial state.
FROM_LOOP name of the function implementing the conversion
- from the current characters.
+ from the current character set.
TO_LOOP likewise for the other direction
- RESET_STATE in case of an error we must reset the state for
+ ONE_DIRECTION optional. If defined to 1, only one conversion
+ direction is defined instead of two. In this
+ case, FROM_DIRECTION should be defined to 1, and
+ FROM_LOOP and TO_LOOP should have the same value.
+
+ SAVE_RESET_STATE in case of an error we must reset the state for
the rerun so this macro must be defined for
stateful encodings. It takes an argument which
is nonzero when saving.
EXTRA_LOOP_ARGS optional macro specifying extra arguments passed
to loop function.
+
+ STORE_REST optional, needed only when MAX_NEEDED_FROM > 4.
+ This macro stores the seen but unconverted input bytes
+ in the state.
+
+ FROM_ONEBYTE optional. If defined, should be the name of a
+ specialized conversion function for a single byte
+ from the current character set to INTERNAL. This
+ function has prototype
+ wint_t
+ FROM_ONEBYTE (struct __gconv_step *, unsigned char);
+ and does a special conversion:
+ - The input is a single byte.
+ - The output is a single uint32_t.
+ - The state before the conversion is the initial state;
+ the state after the conversion is irrelevant.
+ - No transliteration.
+ - __invocation_counter = 0.
+ - __internal_use = 1.
+ - do_flush = 0.
+
+ Modules can use mbstate_t to store conversion state as follows:
+
+ * Bits 2..0 of '__count' contain the number of lookahead input bytes
+ stored in __value.__wchb. Always zero if the converter never
+ returns __GCONV_INCOMPLETE_INPUT.
+
+ * Bits 31..3 of '__count' are module dependent shift state.
+
+ * __value: When STORE_REST/UNPACK_BYTES aren't defined and when the
+ converter has returned __GCONV_INCOMPLETE_INPUT, this contains
+ at most 4 lookahead bytes. Converters with an mb_cur_max > 4
+ (currently only UTF-8) must find a way to store their state
+ in __value.__wch and define STORE_REST/UNPACK_BYTES appropriately.
+
+ When __value contains lookahead, __count must not be zero, because
+ the converter is not in the initial state then, and mbsinit() --
+ defined as a (__count == 0) test -- must reflect this.
*/
#include <assert.h>
# include <dlfcn.h>
#endif
+#include <sysdep.h>
+#include <stdint.h>
+
#ifndef DL_CALL_FCT
# define DL_CALL_FCT(fct, args) fct args
#endif
/* The direction objects. */
-#if DEFINE_DIRECTION_OBJECTS || DEFINE_INIT
-static int from_object;
-static int to_object;
-
+#if DEFINE_INIT
# ifndef FROM_DIRECTION
-# define FROM_DIRECTION (step->__data == &from_object)
+# define FROM_DIRECTION_VAL NULL
+# define TO_DIRECTION_VAL ((void *) ~((uintptr_t) 0))
+# define FROM_DIRECTION (step->__data == FROM_DIRECTION_VAL)
# endif
#else
# ifndef FROM_DIRECTION
-# error "FROM_DIRECTION must be provided if direction objects are not used"
+# error "FROM_DIRECTION must be provided if non-default init is used"
# endif
#endif
# define MAX_NEEDED_TO MIN_NEEDED_TO
#endif
+/* Defaults for the per-direction min/max constants. */
+#ifndef FROM_LOOP_MIN_NEEDED_FROM
+# define FROM_LOOP_MIN_NEEDED_FROM MIN_NEEDED_FROM
+#endif
+#ifndef FROM_LOOP_MAX_NEEDED_FROM
+# define FROM_LOOP_MAX_NEEDED_FROM MAX_NEEDED_FROM
+#endif
+#ifndef FROM_LOOP_MIN_NEEDED_TO
+# define FROM_LOOP_MIN_NEEDED_TO MIN_NEEDED_TO
+#endif
+#ifndef FROM_LOOP_MAX_NEEDED_TO
+# define FROM_LOOP_MAX_NEEDED_TO MAX_NEEDED_TO
+#endif
+#ifndef TO_LOOP_MIN_NEEDED_FROM
+# define TO_LOOP_MIN_NEEDED_FROM MIN_NEEDED_TO
+#endif
+#ifndef TO_LOOP_MAX_NEEDED_FROM
+# define TO_LOOP_MAX_NEEDED_FROM MAX_NEEDED_TO
+#endif
+#ifndef TO_LOOP_MIN_NEEDED_TO
+# define TO_LOOP_MIN_NEEDED_TO MIN_NEEDED_FROM
+#endif
+#ifndef TO_LOOP_MAX_NEEDED_TO
+# define TO_LOOP_MAX_NEEDED_TO MAX_NEEDED_FROM
+#endif
+
/* Define macros which can access unaligned buffers. These macros are
supposed to be used only in code outside the inner loops. For the inner
loops we have other definitions which allow optimized access. */
#ifdef _STRING_ARCH_unaligned
/* We can handle unaligned memory access. */
-# define get16u(addr) *((uint16_t *) (addr))
-# define get32u(addr) *((uint32_t *) (addr))
+# define get16u(addr) *((const uint16_t *) (addr))
+# define get32u(addr) *((const uint32_t *) (addr))
/* We need no special support for writing values either. */
# define put16u(addr, val) *((uint16_t *) (addr)) = (val)
/* Distinguish between big endian and little endian. */
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define get16u(addr) \
- (((__const unsigned char *) (addr))[1] << 8 \
- | ((__const unsigned char *) (addr))[0])
+ (((const unsigned char *) (addr))[1] << 8 \
+ | ((const unsigned char *) (addr))[0])
# define get32u(addr) \
- (((((__const unsigned char *) (addr))[3] << 8 \
- | ((__const unsigned char *) (addr))[2]) << 8 \
- | ((__const unsigned char *) (addr))[1]) << 8 \
- | ((__const unsigned char *) (addr))[0])
+ (((((const unsigned char *) (addr))[3] << 8 \
+ | ((const unsigned char *) (addr))[2]) << 8 \
+ | ((const unsigned char *) (addr))[1]) << 8 \
+ | ((const unsigned char *) (addr))[0])
# define put16u(addr, val) \
({ uint16_t __val = (val); \
(void) 0; })
# else
# define get16u(addr) \
- (((__const unsigned char *) (addr))[0] << 8 \
- | ((__const unsigned char *) (addr))[1])
+ (((const unsigned char *) (addr))[0] << 8 \
+ | ((const unsigned char *) (addr))[1])
# define get32u(addr) \
- (((((__const unsigned char *) (addr))[0] << 8 \
- | ((__const unsigned char *) (addr))[1]) << 8 \
- | ((__const unsigned char *) (addr))[2]) << 8 \
- | ((__const unsigned char *) (addr))[3])
+ (((((const unsigned char *) (addr))[0] << 8 \
+ | ((const unsigned char *) (addr))[1]) << 8 \
+ | ((const unsigned char *) (addr))[2]) << 8 \
+ | ((const unsigned char *) (addr))[3])
# define put16u(addr, val) \
({ uint16_t __val = (val); \
#endif
-/* For conversions from a fixed width character sets to another fixed width
- character set we we can define RESET_INPUT_BUFFER is necessary. */
+/* For conversions from a fixed width character set to another fixed width
+ character set we can define RESET_INPUT_BUFFER in a very fast way. */
#if !defined RESET_INPUT_BUFFER && !defined SAVE_RESET_STATE
-# if MIN_NEEDED_FROM == MAX_NEEDED_FROM && MIN_NEEDED_TO == MAX_NEEDED_TO
+# if FROM_LOOP_MIN_NEEDED_FROM == FROM_LOOP_MAX_NEEDED_FROM \
+ && FROM_LOOP_MIN_NEEDED_TO == FROM_LOOP_MAX_NEEDED_TO \
+ && TO_LOOP_MIN_NEEDED_FROM == TO_LOOP_MAX_NEEDED_FROM \
+ && TO_LOOP_MIN_NEEDED_TO == TO_LOOP_MAX_NEEDED_TO
/* We have to use these `if's here since the compiler cannot know that
- (outbuf - outerr) is always divisible by MIN_NEEDED_TO. */
+ (outbuf - outerr) is always divisible by FROM/TO_LOOP_MIN_NEEDED_TO.
+ The ?:1 avoids division by zero warnings that gcc 3.2 emits even for
+ obviously unreachable code. */
# define RESET_INPUT_BUFFER \
- if (MIN_NEEDED_FROM % MIN_NEEDED_TO == 0) \
- *inptrp -= (outbuf - outerr) * (MIN_NEEDED_FROM / MIN_NEEDED_TO); \
- else if (MIN_NEEDED_TO % MIN_NEEDED_FROM == 0) \
- *inptrp -= (outbuf - outerr) / (MIN_NEEDED_TO / MIN_NEEDED_FROM); \
+ if (FROM_DIRECTION) \
+ { \
+ if (FROM_LOOP_MIN_NEEDED_FROM % FROM_LOOP_MIN_NEEDED_TO == 0) \
+ *inptrp -= (outbuf - outerr) \
+ * (FROM_LOOP_MIN_NEEDED_FROM / FROM_LOOP_MIN_NEEDED_TO); \
+ else if (FROM_LOOP_MIN_NEEDED_TO % FROM_LOOP_MIN_NEEDED_FROM == 0) \
+ *inptrp -= (outbuf - outerr) \
+ / (FROM_LOOP_MIN_NEEDED_TO / FROM_LOOP_MIN_NEEDED_FROM \
+ ? : 1); \
+ else \
+ *inptrp -= ((outbuf - outerr) / FROM_LOOP_MIN_NEEDED_TO) \
+ * FROM_LOOP_MIN_NEEDED_FROM; \
+ } \
else \
- *inptrp -= ((outbuf - outerr) / MIN_NEEDED_TO) * MIN_NEEDED_FROM
+ { \
+ if (TO_LOOP_MIN_NEEDED_FROM % TO_LOOP_MIN_NEEDED_TO == 0) \
+ *inptrp -= (outbuf - outerr) \
+ * (TO_LOOP_MIN_NEEDED_FROM / TO_LOOP_MIN_NEEDED_TO); \
+ else if (TO_LOOP_MIN_NEEDED_TO % TO_LOOP_MIN_NEEDED_FROM == 0) \
+ *inptrp -= (outbuf - outerr) \
+ / (TO_LOOP_MIN_NEEDED_TO / TO_LOOP_MIN_NEEDED_FROM ? : 1); \
+ else \
+ *inptrp -= ((outbuf - outerr) / TO_LOOP_MIN_NEEDED_TO) \
+ * TO_LOOP_MIN_NEEDED_FROM; \
+ }
# endif
#endif
# error "CHARSET_NAME not defined"
# endif
+extern int gconv_init (struct __gconv_step *step);
int
gconv_init (struct __gconv_step *step)
{
/* Determine which direction. */
if (strcmp (step->__from_name, CHARSET_NAME) == 0)
{
- step->__data = &from_object;
+ step->__data = FROM_DIRECTION_VAL;
+
+ step->__min_needed_from = FROM_LOOP_MIN_NEEDED_FROM;
+ step->__max_needed_from = FROM_LOOP_MAX_NEEDED_FROM;
+ step->__min_needed_to = FROM_LOOP_MIN_NEEDED_TO;
+ step->__max_needed_to = FROM_LOOP_MAX_NEEDED_TO;
- step->__min_needed_from = MIN_NEEDED_FROM;
- step->__max_needed_from = MAX_NEEDED_FROM;
- step->__min_needed_to = MIN_NEEDED_TO;
- step->__max_needed_to = MAX_NEEDED_TO;
+#ifdef FROM_ONEBYTE
+ step->__btowc_fct = FROM_ONEBYTE;
+#endif
}
else if (__builtin_expect (strcmp (step->__to_name, CHARSET_NAME), 0) == 0)
{
- step->__data = &to_object;
+ step->__data = TO_DIRECTION_VAL;
- step->__min_needed_from = MIN_NEEDED_TO;
- step->__max_needed_from = MAX_NEEDED_TO;
- step->__min_needed_to = MIN_NEEDED_FROM;
- step->__max_needed_to = MAX_NEEDED_FROM;
+ step->__min_needed_from = TO_LOOP_MIN_NEEDED_FROM;
+ step->__max_needed_from = TO_LOOP_MAX_NEEDED_FROM;
+ step->__min_needed_to = TO_LOOP_MIN_NEEDED_TO;
+ step->__max_needed_to = TO_LOOP_MAX_NEEDED_TO;
}
else
return __GCONV_NOCONV;
-#ifdef RESET_STATE
+#ifdef SAVE_RESET_STATE
step->__stateful = 1;
#else
step->__stateful = 0;
/* The default destructor function does nothing in the moment and so
- be define it at all. But we still provide the macro just in case
- we need it some day. */
+ we don't define it at all. But we still provide the macro just in
+ case we need it some day. */
#if DEFINE_FINI
#endif
#define SINGLE2(fct) fct##_single
+extern int FUNCTION_NAME (struct __gconv_step *step,
+ struct __gconv_step_data *data,
+ const unsigned char **inptrp,
+ const unsigned char *inend,
+ unsigned char **outbufstart, size_t *irreversible,
+ int do_flush, int consume_incomplete);
int
FUNCTION_NAME (struct __gconv_step *step, struct __gconv_step_data *data,
const unsigned char **inptrp, const unsigned char *inend,
- unsigned char *outbufstart, size_t *irreversible, int do_flush,
+ unsigned char **outbufstart, size_t *irreversible, int do_flush,
int consume_incomplete)
{
struct __gconv_step *next_step = step + 1;
struct __gconv_step_data *next_data = data + 1;
- __gconv_fct fct;
+ __gconv_fct fct = NULL;
int status;
- fct = (data->__flags & __GCONV_IS_LAST) ? NULL : next_step->__fct;
+ if ((data->__flags & __GCONV_IS_LAST) == 0)
+ {
+ fct = next_step->__fct;
+#ifdef PTR_DEMANGLE
+ if (next_step->__shlib_handle != NULL)
+ PTR_DEMANGLE (fct);
+#endif
+ }
/* If the function is called with no input this means we have to reset
to the initial state. The possibly partly converted input is
dropped. */
- if (__builtin_expect (do_flush, 0))
+ if (__glibc_unlikely (do_flush))
{
+ /* This should never happen during error handling. */
+ assert (outbufstart == NULL);
+
status = __GCONV_OK;
#ifdef EMIT_SHIFT_TO_INIT
- /* Emit the escape sequence to reset the state. */
- EMIT_SHIFT_TO_INIT;
+ if (do_flush == 1)
+ {
+ /* We preserve the initial values of the pointer variables. */
+ unsigned char *outbuf = data->__outbuf;
+ unsigned char *outstart = outbuf;
+ unsigned char *outend = data->__outbufend;
+
+# ifdef PREPARE_LOOP
+ PREPARE_LOOP
+# endif
+
+# ifdef SAVE_RESET_STATE
+ SAVE_RESET_STATE (1);
+# endif
+
+ /* Emit the escape sequence to reset the state. */
+ EMIT_SHIFT_TO_INIT;
+
+ /* Call the steps down the chain if there are any but only if we
+ successfully emitted the escape sequence. This should only
+ fail if the output buffer is full. If the input is invalid
+ it should be discarded since the user wants to start from a
+ clean state. */
+ if (status == __GCONV_OK)
+ {
+ if (data->__flags & __GCONV_IS_LAST)
+ /* Store information about how many bytes are available. */
+ data->__outbuf = outbuf;
+ else
+ {
+ /* Write out all output which was produced. */
+ if (outbuf > outstart)
+ {
+ const unsigned char *outerr = outstart;
+ int result;
+
+ result = DL_CALL_FCT (fct, (next_step, next_data,
+ &outerr, outbuf, NULL,
+ irreversible, 0,
+ consume_incomplete));
+
+ if (result != __GCONV_EMPTY_INPUT)
+ {
+ if (__glibc_unlikely (outerr != outbuf))
+ {
+ /* We have a problem. Undo the conversion. */
+ outbuf = outstart;
+
+ /* Restore the state. */
+# ifdef SAVE_RESET_STATE
+ SAVE_RESET_STATE (0);
+# endif
+ }
+
+ /* Change the status. */
+ status = result;
+ }
+ }
+
+ if (status == __GCONV_OK)
+ /* Now flush the remaining steps. */
+ status = DL_CALL_FCT (fct, (next_step, next_data, NULL,
+ NULL, NULL, irreversible, 1,
+ consume_incomplete));
+ }
+ }
+ }
+ else
#endif
- /* Call the steps down the chain if there are any but only if we
- successfully emitted the escape sequence. */
- if (status == __GCONV_OK && ! (data->__flags & __GCONV_IS_LAST))
- status = DL_CALL_FCT (fct, (next_step, next_data, NULL, NULL,
- next_data->__outbuf, irreversible, 1,
- consume_incomplete));
+ {
+ /* Clear the state object. There might be bytes in there from
+ previous calls with CONSUME_INCOMPLETE == 1. But don't emit
+ escape sequences. */
+ memset (data->__statep, '\0', sizeof (*data->__statep));
+
+ if (! (data->__flags & __GCONV_IS_LAST))
+ /* Now flush the remaining steps. */
+ status = DL_CALL_FCT (fct, (next_step, next_data, NULL, NULL,
+ NULL, irreversible, do_flush,
+ consume_incomplete));
+ }
}
else
{
/* We preserve the initial values of the pointer variables. */
const unsigned char *inptr = *inptrp;
- unsigned char *outbuf = outbufstart;
+ unsigned char *outbuf = (__builtin_expect (outbufstart == NULL, 1)
+ ? data->__outbuf : *outbufstart);
unsigned char *outend = data->__outbufend;
unsigned char *outstart;
/* This variable is used to count the number of characters we
actually converted. */
size_t lirreversible = 0;
-#if defined _STRING_ARCH_unaligned \
- || MIN_NEEDED_FROM == 1 || MAX_NEEDED_FROM % MIN_NEEDED_FROM != 0 \
- || MIN_NEEDED_TO == 1 || MAX_NEEDED_TO % MIN_NEEDED_TO != 0
-# define unaligned 0
-#else
+ size_t *lirreversiblep = irreversible ? &lirreversible : NULL;
+
+ /* The following assumes that encodings, which have a variable length
+ what might unalign a buffer even though it is an aligned in the
+ beginning, either don't have the minimal number of bytes as a divisor
+ of the maximum length or have a minimum length of 1. This is true
+ for all known and supported encodings.
+ We use && instead of || to combine the subexpression for the FROM
+ encoding and for the TO encoding, because usually one of them is
+ INTERNAL, for which the subexpression evaluates to 1, but INTERNAL
+ buffers are always aligned correctly. */
+#define POSSIBLY_UNALIGNED \
+ (!defined _STRING_ARCH_unaligned \
+ && (((FROM_LOOP_MIN_NEEDED_FROM != 1 \
+ && FROM_LOOP_MAX_NEEDED_FROM % FROM_LOOP_MIN_NEEDED_FROM == 0) \
+ && (FROM_LOOP_MIN_NEEDED_TO != 1 \
+ && FROM_LOOP_MAX_NEEDED_TO % FROM_LOOP_MIN_NEEDED_TO == 0)) \
+ || ((TO_LOOP_MIN_NEEDED_FROM != 1 \
+ && TO_LOOP_MAX_NEEDED_FROM % TO_LOOP_MIN_NEEDED_FROM == 0) \
+ && (TO_LOOP_MIN_NEEDED_TO != 1 \
+ && TO_LOOP_MAX_NEEDED_TO % TO_LOOP_MIN_NEEDED_TO == 0))))
+#if POSSIBLY_UNALIGNED
int unaligned;
# define GEN_unaligned(name) GEN_unaligned2 (name)
# define GEN_unaligned2(name) name##_unaligned
+#else
+# define unaligned 0
#endif
#ifdef PREPARE_LOOP
PREPARE_LOOP
#endif
-#if MAX_NEEDED_FROM > 1 || MAX_NEEDED_TO > 1
+#if FROM_LOOP_MAX_NEEDED_FROM > 1 || TO_LOOP_MAX_NEEDED_FROM > 1
/* If the function is used to implement the mb*towc*() or wc*tomb*()
functions we must test whether any bytes from the last call are
stored in the `state' object. */
- if (((MAX_NEEDED_FROM > 1 && FROM_DIRECTION)
- || (MAX_NEEDED_TO > 1 && !FROM_DIRECTION))
+ if (((FROM_LOOP_MAX_NEEDED_FROM > 1 && TO_LOOP_MAX_NEEDED_FROM > 1)
+ || (FROM_LOOP_MAX_NEEDED_FROM > 1 && FROM_DIRECTION)
+ || (TO_LOOP_MAX_NEEDED_FROM > 1 && !FROM_DIRECTION))
&& consume_incomplete && (data->__statep->__count & 7) != 0)
{
- /* Yep, we have some bytes left over. Process them now. */
+ /* Yep, we have some bytes left over. Process them now.
+ But this must not happen while we are called from an
+ error handler. */
+ assert (outbufstart == NULL);
-# if MAX_NEEDED_FROM > 1
- if (MAX_NEEDED_TO == 1 || FROM_DIRECTION)
+# if FROM_LOOP_MAX_NEEDED_FROM > 1
+ if (TO_LOOP_MAX_NEEDED_FROM == 1 || FROM_DIRECTION)
status = SINGLE(FROM_LOOP) (step, data, inptrp, inend, &outbuf,
- outend, &lirreversible
+ outend, lirreversiblep
EXTRA_LOOP_ARGS);
# endif
-# if MAX_NEEDED_FROM > 1 && MAX_NEEDED_TO > 1 && !ONE_DIRECTION
+# if !ONE_DIRECTION
+# if FROM_LOOP_MAX_NEEDED_FROM > 1 && TO_LOOP_MAX_NEEDED_FROM > 1
else
-# endif
-# if MAX_NEEDED_TO > 1 && !ONE_DIRECTION
+# endif
+# if TO_LOOP_MAX_NEEDED_FROM > 1
status = SINGLE(TO_LOOP) (step, data, inptrp, inend, &outbuf,
- outend, &lirreversible EXTRA_LOOP_ARGS);
+ outend, lirreversiblep EXTRA_LOOP_ARGS);
+# endif
# endif
if (__builtin_expect (status, __GCONV_OK) != __GCONV_OK)
}
#endif
-#if !defined _STRING_ARCH_unaligned \
- && MIN_NEEDED_FROM != 1 && MAX_NEEDED_FROM % MIN_NEEDED_FROM == 0 \
- && MIN_NEEDED_TO != 1 && MAX_NEEDED_TO % MIN_NEEDED_TO == 0
- /* The following assumes that encodings, which have a variable length
- what might unalign a buffer even though it is a aligned in the
- beginning, either don't have the minimal number of bytes as a divisor
- of the maximum length or have a minimum length of 1. This is true
- for all known and supported encodings. */
- unaligned = ((FROM_DIRECTION
- && ((uintptr_t) inptr % MIN_NEEDED_FROM != 0
- || ((data->__flags & __GCONV_IS_LAST)
- && (uintptr_t) outbuf % MIN_NEEDED_TO != 0)))
- || (!FROM_DIRECTION
- && (((data->__flags & __GCONV_IS_LAST)
- && (uintptr_t) outbuf % MIN_NEEDED_FROM != 0)
- || (uintptr_t) inptr % MIN_NEEDED_TO != 0)));
+#if POSSIBLY_UNALIGNED
+ unaligned =
+ ((FROM_DIRECTION
+ && ((uintptr_t) inptr % FROM_LOOP_MIN_NEEDED_FROM != 0
+ || ((data->__flags & __GCONV_IS_LAST)
+ && (uintptr_t) outbuf % FROM_LOOP_MIN_NEEDED_TO != 0)))
+ || (!FROM_DIRECTION
+ && (((data->__flags & __GCONV_IS_LAST)
+ && (uintptr_t) outbuf % TO_LOOP_MIN_NEEDED_TO != 0)
+ || (uintptr_t) inptr % TO_LOOP_MIN_NEEDED_FROM != 0)));
#endif
- do
+ while (1)
{
+ struct __gconv_trans_data *trans;
+
/* Remember the start value for this round. */
inptr = *inptrp;
/* The outbuf buffer is empty. */
SAVE_RESET_STATE (1);
#endif
- if (__builtin_expect (!unaligned, 1))
+ if (__glibc_likely (!unaligned))
{
if (FROM_DIRECTION)
/* Run the conversion loop. */
status = FROM_LOOP (step, data, inptrp, inend, &outbuf, outend,
- &lirreversible EXTRA_LOOP_ARGS);
+ lirreversiblep EXTRA_LOOP_ARGS);
else
/* Run the conversion loop. */
status = TO_LOOP (step, data, inptrp, inend, &outbuf, outend,
- &lirreversible EXTRA_LOOP_ARGS);
+ lirreversiblep EXTRA_LOOP_ARGS);
}
-#if !defined _STRING_ARCH_unaligned \
- && MIN_NEEDED_FROM != 1 && MAX_NEEDED_FROM % MIN_NEEDED_FROM == 0 \
- && MIN_NEEDED_TO != 1 && MAX_NEEDED_TO % MIN_NEEDED_TO == 0
+#if POSSIBLY_UNALIGNED
else
{
if (FROM_DIRECTION)
/* Run the conversion loop. */
status = GEN_unaligned (FROM_LOOP) (step, data, inptrp, inend,
&outbuf, outend,
- &lirreversible
+ lirreversiblep
EXTRA_LOOP_ARGS);
else
/* Run the conversion loop. */
status = GEN_unaligned (TO_LOOP) (step, data, inptrp, inend,
&outbuf, outend,
- &lirreversible
+ lirreversiblep
EXTRA_LOOP_ARGS);
}
#endif
+ /* If we were called as part of an error handling module we
+ don't do anything else here. */
+ if (__glibc_unlikely (outbufstart != NULL))
+ {
+ *outbufstart = outbuf;
+ return status;
+ }
+
+ /* Give the transliteration module the chance to store the
+ original text and the result in case it needs a context. */
+ for (trans = data->__trans; trans != NULL; trans = trans->__next)
+ if (trans->__trans_context_fct != NULL)
+ DL_CALL_FCT (trans->__trans_context_fct,
+ (trans->__data, inptr, *inptrp, outstart, outbuf));
+
/* We finished one use of the loops. */
++data->__invocation_counter;
/* If this is the last step leave the loop, there is nothing
- we can do. */
- if (__builtin_expect (data->__flags & __GCONV_IS_LAST, 0))
+ we can do. */
+ if (__glibc_unlikely (data->__flags & __GCONV_IS_LAST))
{
/* Store information about how many bytes are available. */
data->__outbuf = outbuf;
/* Remember how many non-identical characters we
- converted in a irreversible way. */
+ converted in an irreversible way. */
*irreversible += lirreversible;
break;
}
/* Write out all output which was produced. */
- if (__builtin_expect (outbuf > outstart, 1))
+ if (__glibc_likely (outbuf > outstart))
{
const unsigned char *outerr = data->__outbuf;
int result;
result = DL_CALL_FCT (fct, (next_step, next_data, &outerr,
- outbuf, next_data->__outbuf,
- irreversible, 0,
+ outbuf, NULL, irreversible, 0,
consume_incomplete));
if (result != __GCONV_EMPTY_INPUT)
{
- if (__builtin_expect (outerr != outbuf, 0))
+ if (__glibc_unlikely (outerr != outbuf))
{
#ifdef RESET_INPUT_BUFFER
RESET_INPUT_BUFFER;
#else
- /* We have a problem with the in on of the functions
- below. Undo the conversion upto the error point. */
+ /* We have a problem in one of the functions below.
+ Undo the conversion upto the error point. */
size_t nstatus;
/* Reload the pointers. */
*inptrp = inptr;
outbuf = outstart;
- /* Reset the state. */
+ /* Restore the state. */
# ifdef SAVE_RESET_STATE
SAVE_RESET_STATE (0);
# endif
- /* XXX Handle unaligned access here as well. */
- if (FROM_DIRECTION)
- /* Run the conversion loop. */
- nstatus = FROM_LOOP (step, data,
- (const unsigned char **) inptrp,
- (const unsigned char *) inend,
- (unsigned char **) &outbuf,
- (unsigned char *) outerr,
- &lirreversible EXTRA_LOOP_ARGS);
+ if (__glibc_likely (!unaligned))
+ {
+ if (FROM_DIRECTION)
+ /* Run the conversion loop. */
+ nstatus = FROM_LOOP (step, data, inptrp, inend,
+ &outbuf, outerr,
+ lirreversiblep
+ EXTRA_LOOP_ARGS);
+ else
+ /* Run the conversion loop. */
+ nstatus = TO_LOOP (step, data, inptrp, inend,
+ &outbuf, outerr,
+ lirreversiblep
+ EXTRA_LOOP_ARGS);
+ }
+# if POSSIBLY_UNALIGNED
else
- /* Run the conversion loop. */
- nstatus = TO_LOOP (step, data,
- (const unsigned char **) inptrp,
- (const unsigned char *) inend,
- (unsigned char **) &outbuf,
- (unsigned char *) outerr,
- &lirreversible EXTRA_LOOP_ARGS);
+ {
+ if (FROM_DIRECTION)
+ /* Run the conversion loop. */
+ nstatus = GEN_unaligned (FROM_LOOP) (step, data,
+ inptrp, inend,
+ &outbuf,
+ outerr,
+ lirreversiblep
+ EXTRA_LOOP_ARGS);
+ else
+ /* Run the conversion loop. */
+ nstatus = GEN_unaligned (TO_LOOP) (step, data,
+ inptrp, inend,
+ &outbuf, outerr,
+ lirreversiblep
+ EXTRA_LOOP_ARGS);
+ }
+# endif
/* We must run out of output buffer space in this
rerun. */
/* If we haven't consumed a single byte decrement
the invocation counter. */
- if (__builtin_expect (outbuf == outstart, 0))
+ if (__glibc_unlikely (outbuf == outstart))
--data->__invocation_counter;
#endif /* reset input buffer */
}
/* All the output is consumed, we can make another run
if everything was ok. */
if (status == __GCONV_FULL_OUTPUT)
- status = __GCONV_OK;
+ {
+ status = __GCONV_OK;
+ outbuf = data->__outbuf;
+ }
}
+
+ if (status != __GCONV_OK)
+ break;
+
+ /* Reset the output buffer pointer for the next round. */
+ outbuf = data->__outbuf;
}
- while (status == __GCONV_OK);
#ifdef END_LOOP
END_LOOP
/* If we are supposed to consume all character store now all of the
remaining characters in the `state' object. */
-#if MAX_NEEDED_FROM > 1 || MAX_NEEDED_TO > 1
- if (((MAX_NEEDED_FROM > 1 && FROM_DIRECTION)
- || (MAX_NEEDED_TO > 1 && !FROM_DIRECTION))
+#if FROM_LOOP_MAX_NEEDED_FROM > 1 || TO_LOOP_MAX_NEEDED_FROM > 1
+ if (((FROM_LOOP_MAX_NEEDED_FROM > 1 && TO_LOOP_MAX_NEEDED_FROM > 1)
+ || (FROM_LOOP_MAX_NEEDED_FROM > 1 && FROM_DIRECTION)
+ || (TO_LOOP_MAX_NEEDED_FROM > 1 && !FROM_DIRECTION))
&& __builtin_expect (consume_incomplete, 0)
&& status == __GCONV_INCOMPLETE_INPUT)
{
STORE_REST
# else
- size_t cnt;
-
/* Make sure the remaining bytes fit into the state objects
- buffer. */
+ buffer. */
assert (inend - *inptrp < 4);
+ size_t cnt;
for (cnt = 0; *inptrp < inend; ++cnt)
data->__statep->__value.__wchb[cnt] = *(*inptrp)++;
data->__statep->__count &= ~7;
# endif
}
#endif
+#undef unaligned
+#undef POSSIBLY_UNALIGNED
}
return status;
#undef MIN_NEEDED_TO
#undef MAX_NEEDED_FROM
#undef MAX_NEEDED_TO
-#undef DEFINE_DIRECTION_OBJECTS
+#undef FROM_LOOP_MIN_NEEDED_FROM
+#undef FROM_LOOP_MAX_NEEDED_FROM
+#undef FROM_LOOP_MIN_NEEDED_TO
+#undef FROM_LOOP_MAX_NEEDED_TO
+#undef TO_LOOP_MIN_NEEDED_FROM
+#undef TO_LOOP_MAX_NEEDED_FROM
+#undef TO_LOOP_MIN_NEEDED_TO
+#undef TO_LOOP_MAX_NEEDED_TO
#undef FROM_DIRECTION
#undef EMIT_SHIFT_TO_INIT
#undef FROM_LOOP
#undef TO_LOOP
-#undef RESET_STATE
+#undef ONE_DIRECTION
+#undef SAVE_RESET_STATE
#undef RESET_INPUT_BUFFER
#undef FUNCTION_NAME
#undef PREPARE_LOOP
#undef END_LOOP
-#undef ONE_DIRECTION
+#undef EXTRA_LOOP_ARGS
#undef STORE_REST
+#undef FROM_ONEBYTE
projects / thirdparty / glibc.git / blobdiff