--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/src/utf8_fast.c Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,346 @@
+/*
+ * LIBOIL - Library of Optimized Inner Loops
+ * Copyright (c) 2004 David A. Schleef <ds@schleef.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+//Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <liboil/liboil.h>
+#include "liboil/utf8/utf8.h"
+
+
+#ifdef HAVE_UNALIGNED_ACCESS
+static void
+utf8_validate_fast (int32_t *d_1, uint8_t *s, int n)
+{
+ int i;
+ int extra_bytes;
+ int mask;
+
+ i=0;
+ while (i<n) {
+ if (i < n-3 && (*(uint32_t *)(s+i) & 0x80808080) == 0) {
+ i+=4;
+ continue;
+ }
+ if (s[i] < 128) {
+ i++;
+ continue;
+ }
+ if ((s[i] & 0xe0) == 0xc0) {
+ extra_bytes = 1;
+ mask = 0x7f;
+ } else if ((s[i] & 0xf0) == 0xe0) {
+ extra_bytes = 2;
+ mask = 0x1f;
+ } else if ((s[i] & 0xf8) == 0xf0) {
+ extra_bytes = 3;
+ mask = 0x0f;
+ } else {
+ goto error;
+ }
+ if (i + extra_bytes >= n) goto error;
+ while(extra_bytes--) {
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ }
+ i++;
+ }
+
+error:
+ d_1[0] = i;
+}
+OIL_DEFINE_IMPL (utf8_validate_fast, utf8_validate);
+#endif
+
+static void
+utf8_validate_fast2 (int32_t *d_1, uint8_t *s, int n)
+{
+ int i;
+ uint8_t x;
+
+ i=0;
+ while (i<n) {
+ x = s[i];
+ if (!(x & 0x80)) {
+ i++;
+ continue;
+ }
+ x <<= 1;
+ if (!(x & 0x80)) {
+ goto error;
+ }
+ x <<= 1;
+ if (!(x & 0x80)) {
+ if (i + 1 >= n) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ continue;
+ }
+ x <<= 1;
+ if (!(x & 0x80)) {
+ if (i + 2 >= n) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ continue;
+ }
+ x <<= 1;
+ if (!(x & 0x80)) {
+ if (i + 3 >= n) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ continue;
+ }
+ goto error;
+ }
+
+error:
+ d_1[0] = i;
+}
+OIL_DEFINE_IMPL (utf8_validate_fast2, utf8_validate);
+
+#ifdef HAVE_UNALIGNED_ACCESS
+static void
+utf8_validate_fast3 (int32_t *d_1, uint8_t *s, int n)
+{
+ int i;
+ uint8_t x;
+
+ i=0;
+ while (i<n) {
+ if (i < n-3 && (*(uint32_t *)(s+i) & 0x80808080) == 0) {
+ i+=4;
+ continue;
+ }
+ x = s[i];
+ if (!(x & 0x80)) {
+ i++;
+ continue;
+ }
+ if (!(x & 0x40)) {
+ goto error;
+ }
+ if (!(x & 0x20)) {
+ if (i + 1 >= n) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ continue;
+ }
+ if (!(x & 0x10)) {
+ if (i + 2 >= n) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ continue;
+ }
+ if (!(x & 0x08)) {
+ if (i + 3 >= n) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ i++;
+ continue;
+ }
+ goto error;
+ }
+
+error:
+ d_1[0] = i;
+}
+OIL_DEFINE_IMPL (utf8_validate_fast3, utf8_validate);
+#endif
+
+static uint8_t utf8_table[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 3, 3, 3, 3, 3, 3, 3, 3, 8, 8, 8, 8, 8, 8, 8, 8
+};
+
+static void
+utf8_validate_lookup (int32_t *d_1, uint8_t *s, int n)
+{
+ int i;
+ uint8_t x;
+
+ i=0;
+ while (i<n) {
+ x = utf8_table[s[i]];
+ if (x > 0) {
+ if (x == 8 || i + x >= n) goto error;
+ while (x>0) {
+ i++;
+ if ((s[i] & 0xc0) != 0x80) goto error;
+ x--;
+ }
+ }
+ i++;
+ }
+
+error:
+ d_1[0] = i;
+}
+OIL_DEFINE_IMPL (utf8_validate_lookup, utf8_validate);
+
+#if 0
+static void
+utf8_validate_asm1 (int32_t *d_1, uint8_t *s, int n)
+{
+ uint8_t *tmp = s;
+
+ asm (
+ "1:\n"
+ " movb (%%eax), %%bl\n"
+ " testb %%bl, %%bl\n"
+ //" jns 3f\n"
+ " js 2f\n"
+ "3:\n"
+ " addl $1, %%eax\n"
+ " subl $1, %%ecx\n"
+ " jne 1b\n"
+ "2:\n"
+ : "+a" (tmp), "+c" (n)
+ :
+ : "ebx" );
+
+ d_1[0] = tmp - s;
+}
+OIL_DEFINE_IMPL (utf8_validate_asm1, utf8_validate);
+
+static void
+utf8_validate_asm2 (int32_t *d_1, uint8_t *s, int n)
+{
+ uint8_t *tmp = s;
+
+ asm (
+ "1:\n"
+ " testl $0x80808080, (%%eax)\n"
+ " jne 2f\n"
+ " testl $0x80808080, 4(%%eax)\n"
+ " jne 2f\n"
+ " testl $0x80808080, 8(%%eax)\n"
+ " jne 2f\n"
+ " testl $0x80808080, 12(%%eax)\n"
+ " jne 2f\n"
+ " addl $16, %%eax\n"
+ " subl $16, %%ecx\n"
+ " jge 1b\n"
+ " jl 4f\n"
+ "2:\n"
+ " movb (%%eax), %%bl\n"
+ " testb %%bl, %%bl\n"
+ " js 4f\n"
+ "3:\n"
+ " addl $1, %%eax\n"
+ " subl $1, %%ecx\n"
+ " jne 1b\n"
+ "4:\n"
+ : "+a" (tmp), "+c" (n)
+ :
+ : "ebx" );
+
+ d_1[0] = tmp - s;
+}
+OIL_DEFINE_IMPL (utf8_validate_asm2, utf8_validate);
+#endif
+
+
+
+#ifdef HAVE_UNALIGNED_ACCESS
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_utf8_validate_fast() {
+ return &_oil_function_impl_utf8_validate_fast;
+}
+#endif
+#endif
+
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_utf8_validate_fast2() {
+ return &_oil_function_impl_utf8_validate_fast2;
+}
+#endif
+
+#ifdef HAVE_UNALIGNED_ACCESS
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_utf8_validate_fast3() {
+ return &_oil_function_impl_utf8_validate_fast3;
+}
+#endif
+#endif
+
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_utf8_validate_lookup() {
+ return &_oil_function_impl_utf8_validate_lookup;
+}
+#endif
+
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_utf8_validate_asm1() {
+ return &_oil_function_impl_utf8_validate_asm1;
+}
+#endif
+
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_utf8_validate_asm2() {
+ return &_oil_function_impl_utf8_validate_asm2;
+}
+#endif
+