sl@0: /*
sl@0:  * LIBOIL - Library of Optimized Inner Loops
sl@0:  * Copyright (c) 2005 David A. Schleef <ds@schleef.org>
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
sl@0:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
sl@0:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
sl@0:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
sl@0:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sl@0:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
sl@0:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
sl@0:  * POSSIBILITY OF SUCH DAMAGE.
sl@0:  */
sl@0: //Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 
sl@0: 
sl@0: #ifdef HAVE_CONFIG_H
sl@0: #include "config.h"
sl@0: #endif
sl@0: 
sl@0: #include <liboil/liboil.h>
sl@0: #include <liboil/liboilfunction.h>
sl@0: #include <liboil/liboilclasses.h>
sl@0: 
sl@0: #ifdef HAVE_UNISTD_H
sl@0: #include <unistd.h>
sl@0: #endif
sl@0: #include <string.h>
sl@0: 
sl@0: 
sl@0: static void
sl@0: swab_u16_libc (uint16_t *d, const uint16_t *s, int n)
sl@0: {
sl@0:   swab ((void *)s, (void *)d, n*2);
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u16_libc, swab_u16);
sl@0: 
sl@0: static void
sl@0: swab_u16_ptr (uint16_t *d, const uint16_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0: 
sl@0:   for(i=0;i<n;i++){
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u16_ptr, swab_u16);
sl@0: 
sl@0: static void
sl@0: swab_u32_ptr (uint32_t *d, const uint32_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0: 
sl@0:   for(i=0;i<n;i++){
sl@0:     *d++ = (*s<<24) | ((*s&0x0000ff00)<<8) |
sl@0:       ((*s&0x00ff0000)>>8) | (*s>>24);
sl@0:     s++;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u32_ptr, swab_u32);
sl@0: 
sl@0: static void
sl@0: swab_u16_unroll2 (uint16_t *d, const uint16_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0: 
sl@0:   if (n&1) {
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:   }
sl@0:   n>>=1;
sl@0:   for(i=0;i<n;i++){
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u16_unroll2, swab_u16);
sl@0: 
sl@0: static void
sl@0: swab_u16_unroll4 (uint16_t *d, const uint16_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0: 
sl@0:   while (n&3) {
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:     n--;
sl@0:   }
sl@0:   n>>=2;
sl@0:   for(i=0;i<n;i++){
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:     *d++ = (*s<<8) | (*s>>8);
sl@0:     s++;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u16_unroll4, swab_u16);
sl@0: 
sl@0: static void
sl@0: swab_u32_unroll2 (uint32_t *d, const uint32_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0: 
sl@0:   if (n&1) {
sl@0:     *d++ = (*s<<24) | ((*s&0x0000ff00)<<8) |
sl@0:       ((*s&0x00ff0000)>>8) | (*s>>24);
sl@0:     s++;
sl@0:   }
sl@0:   n>>=1;
sl@0:   for(i=0;i<n;i++){
sl@0:     *d++ = (*s<<24) | ((*s&0x0000ff00)<<8) |
sl@0:       ((*s&0x00ff0000)>>8) | (*s>>24);
sl@0:     s++;
sl@0:     *d++ = (*s<<24) | ((*s&0x0000ff00)<<8) |
sl@0:       ((*s&0x00ff0000)>>8) | (*s>>24);
sl@0:     s++;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u32_unroll2, swab_u32);
sl@0: 
sl@0: 
sl@0: static void
sl@0: swab_u16_char (uint16_t *d, const uint16_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0:   uint8_t *bd = (uint8_t *)d;
sl@0:   uint8_t *bs = (uint8_t *)s;
sl@0:   int x;
sl@0: 
sl@0:   for(i=0;i<n;i++){
sl@0:     x = bs[0];
sl@0:     bd[0] = bs[1];
sl@0:     bd[1] = x;
sl@0:     bd += 2;
sl@0:     bs += 2;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u16_char, swab_u16);
sl@0: 
sl@0: static void
sl@0: swab_u32_char (uint32_t *d, const uint32_t *s, int n)
sl@0: {
sl@0:   int i;
sl@0: 
sl@0:   for(i=0;i<n;i++){
sl@0:     *d++ = (*s<<24) | ((*s&0x0000ff00)<<8) |
sl@0:       ((*s&0x00ff0000)>>8) | (*s>>24);
sl@0:     s++;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u32_char, swab_u32);
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: #if 0
sl@0: static void
sl@0: swab_u32_asm (uint32_t *d, uint32_t *s, int n)
sl@0: {
sl@0:   asm volatile ("\n"
sl@0:       "1:\n"
sl@0:       "  mov 0(%1), %%eax\n"
sl@0:       "  bswap %%eax\n"
sl@0:       "  mov %%eax, 0(%0)\n"
sl@0:       "  add $4, %0\n"
sl@0:       "  add $4, %1\n"
sl@0:       "  decl %2\n"
sl@0:       "  jne 1b\n"
sl@0:       : "+r" (d), "+r" (s), "+r" (n)
sl@0:       :
sl@0:       : "eax");
sl@0: }
sl@0: OIL_DEFINE_IMPL (swab_u32_asm, swab_u32);
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u16_libc() {
sl@0: 		return &_oil_function_impl_swab_u16_libc;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u16_ptr() {
sl@0: 		return &_oil_function_impl_swab_u16_ptr;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u32_ptr() {
sl@0: 		return &_oil_function_impl_swab_u32_ptr;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u16_unroll2() {
sl@0: 		return &_oil_function_impl_swab_u16_unroll2;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u16_unroll4() {
sl@0: 		return &_oil_function_impl_swab_u16_unroll4;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u32_unroll2() {
sl@0: 		return &_oil_function_impl_swab_u32_unroll2;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u16_char() {
sl@0: 		return &_oil_function_impl_swab_u16_char;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u32_char() {
sl@0: 		return &_oil_function_impl_swab_u32_char;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #if 0
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_swab_u32_asm() {
sl@0: 		return &_oil_function_impl_swab_u32_asm;
sl@0: }
sl@0: #endif
sl@0: #endif