274 lines
11 KiB
C
274 lines
11 KiB
C
/*
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* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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/** @file
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*
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* memcpy() self-tests
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*
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*/
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/* Forcibly enable assertions */
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#undef NDEBUG
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ipxe/test.h>
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#include <ipxe/profile.h>
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/** Number of sample iterations for profiling */
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#define PROFILE_COUNT 16
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/* Provide global functions to allow inspection of generated code */
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void memcpy_0 ( void *dest, void *src ) { memcpy ( dest, src, 0 ); }
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void memcpy_1 ( void *dest, void *src ) { memcpy ( dest, src, 1 ); }
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void memcpy_2 ( void *dest, void *src ) { memcpy ( dest, src, 2 ); }
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void memcpy_3 ( void *dest, void *src ) { memcpy ( dest, src, 3 ); }
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void memcpy_4 ( void *dest, void *src ) { memcpy ( dest, src, 4 ); }
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void memcpy_5 ( void *dest, void *src ) { memcpy ( dest, src, 5 ); }
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void memcpy_6 ( void *dest, void *src ) { memcpy ( dest, src, 6 ); }
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void memcpy_7 ( void *dest, void *src ) { memcpy ( dest, src, 7 ); }
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void memcpy_8 ( void *dest, void *src ) { memcpy ( dest, src, 8 ); }
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void memcpy_9 ( void *dest, void *src ) { memcpy ( dest, src, 9 ); }
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void memcpy_10 ( void *dest, void *src ) { memcpy ( dest, src, 10 ); }
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void memcpy_11 ( void *dest, void *src ) { memcpy ( dest, src, 11 ); }
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void memcpy_12 ( void *dest, void *src ) { memcpy ( dest, src, 12 ); }
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void memcpy_13 ( void *dest, void *src ) { memcpy ( dest, src, 13 ); }
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void memcpy_14 ( void *dest, void *src ) { memcpy ( dest, src, 14 ); }
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void memcpy_15 ( void *dest, void *src ) { memcpy ( dest, src, 15 ); }
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void memcpy_16 ( void *dest, void *src ) { memcpy ( dest, src, 16 ); }
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void memcpy_17 ( void *dest, void *src ) { memcpy ( dest, src, 17 ); }
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void memcpy_18 ( void *dest, void *src ) { memcpy ( dest, src, 18 ); }
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void memcpy_19 ( void *dest, void *src ) { memcpy ( dest, src, 19 ); }
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void memcpy_20 ( void *dest, void *src ) { memcpy ( dest, src, 20 ); }
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void memcpy_21 ( void *dest, void *src ) { memcpy ( dest, src, 21 ); }
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void memcpy_22 ( void *dest, void *src ) { memcpy ( dest, src, 22 ); }
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void memcpy_23 ( void *dest, void *src ) { memcpy ( dest, src, 23 ); }
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void memcpy_24 ( void *dest, void *src ) { memcpy ( dest, src, 24 ); }
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void memcpy_25 ( void *dest, void *src ) { memcpy ( dest, src, 25 ); }
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void memcpy_26 ( void *dest, void *src ) { memcpy ( dest, src, 26 ); }
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void memcpy_27 ( void *dest, void *src ) { memcpy ( dest, src, 27 ); }
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void memcpy_28 ( void *dest, void *src ) { memcpy ( dest, src, 28 ); }
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void memcpy_29 ( void *dest, void *src ) { memcpy ( dest, src, 29 ); }
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void memcpy_30 ( void *dest, void *src ) { memcpy ( dest, src, 30 ); }
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void memcpy_31 ( void *dest, void *src ) { memcpy ( dest, src, 31 ); }
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/**
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* Force a call to the variable-length implementation of memcpy()
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*
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* @v dest Destination address
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* @v src Source address
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* @v len Length of data
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* @ret dest Destination address
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*/
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__attribute__ (( noinline )) void * memcpy_var ( void *dest, const void *src,
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size_t len ) {
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return memcpy ( dest, src, len );
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}
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/**
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* Perform a constant-length memcpy() test
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*
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* ... Data to copy
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*/
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#define MEMCPY_TEST_CONSTANT( ... ) do { \
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static const uint8_t src[] = { __VA_ARGS__ }; \
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uint8_t dest_const[ 1 + sizeof ( src ) + 1 ]; \
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uint8_t dest_var[ 1 + sizeof ( src ) + 1 ]; \
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\
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dest_const[0] = 0x33; \
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dest_const[ sizeof ( dest_const ) - 1 ] = 0x44; \
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memcpy ( ( dest_const + 1 ), src, \
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( sizeof ( dest_const ) - 2 ) ); \
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ok ( dest_const[0] == 0x33 ); \
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ok ( dest_const[ sizeof ( dest_const ) - 1 ] == 0x44 ); \
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ok ( memcmp ( ( dest_const + 1 ), src, \
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( sizeof ( dest_const ) - 2 ) ) == 0 ); \
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\
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dest_var[0] = 0x55; \
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dest_var[ sizeof ( dest_var ) - 1 ] = 0x66; \
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memcpy_var ( ( dest_var + 1 ), src, \
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( sizeof ( dest_var ) - 2 ) ); \
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ok ( dest_var[0] == 0x55 ); \
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ok ( dest_var[ sizeof ( dest_var ) - 1 ] == 0x66 ); \
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ok ( memcmp ( ( dest_var + 1 ), src, \
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( sizeof ( dest_var ) - 2 ) ) == 0 ); \
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} while ( 0 )
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/**
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* Test memcpy() speed
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*
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* @v dest_offset Destination alignment offset
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* @v src_offset Source alignment offset
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* @v len Length of data to copy
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*/
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static void memcpy_test_speed ( unsigned int dest_offset,
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unsigned int src_offset, size_t len ) {
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struct profiler profiler;
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uint8_t *dest;
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uint8_t *src;
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unsigned int i;
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/* Allocate blocks */
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dest = malloc ( len + dest_offset );
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assert ( dest != NULL );
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src = malloc ( len + src_offset );
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assert ( src != NULL );
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/* Generate random source data */
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for ( i = 0 ; i < len ; i++ )
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src[ src_offset + i ] = random();
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/* Check correctness of copied data */
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memcpy ( ( dest + dest_offset ), ( src + src_offset ), len );
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ok ( memcmp ( ( dest + dest_offset ), ( src + src_offset ),
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len ) == 0 );
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/* Profile memcpy() */
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memset ( &profiler, 0, sizeof ( profiler ) );
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for ( i = 0 ; i < PROFILE_COUNT ; i++ ) {
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profile_start ( &profiler );
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memcpy ( ( dest + dest_offset ), ( src + src_offset ), len );
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profile_stop ( &profiler );
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}
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/* Free blocks */
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free ( dest );
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free ( src );
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DBG ( "MEMCPY copied %zd bytes (+%d => +%d) in %ld +/- %ld ticks\n",
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len, src_offset, dest_offset, profile_mean ( &profiler ),
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profile_stddev ( &profiler ) );
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}
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/**
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* Perform memcpy() self-tests
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*
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*/
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static void memcpy_test_exec ( void ) {
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unsigned int dest_offset;
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unsigned int src_offset;
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/* Constant-length tests */
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MEMCPY_TEST_CONSTANT ( );
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MEMCPY_TEST_CONSTANT ( 0x86 );
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MEMCPY_TEST_CONSTANT ( 0x8c, 0xd3 );
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MEMCPY_TEST_CONSTANT ( 0x4e, 0x08, 0xed );
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MEMCPY_TEST_CONSTANT ( 0xcc, 0x61, 0x8f, 0x70 );
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MEMCPY_TEST_CONSTANT ( 0x6d, 0x28, 0xe0, 0x9e, 0x6d );
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MEMCPY_TEST_CONSTANT ( 0x7d, 0x13, 0x4f, 0xef, 0x17, 0xb3 );
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MEMCPY_TEST_CONSTANT ( 0x38, 0xa7, 0xd4, 0x8d, 0x44, 0x01, 0xfd );
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MEMCPY_TEST_CONSTANT ( 0x45, 0x9f, 0xf4, 0xf9, 0xf3, 0x0f, 0x99, 0x43 );
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MEMCPY_TEST_CONSTANT ( 0x69, 0x8c, 0xf6, 0x12, 0x79, 0x70, 0xd8, 0x1e,
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0x9d );
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MEMCPY_TEST_CONSTANT ( 0xbe, 0x53, 0xb4, 0xb7, 0xdd, 0xe6, 0x35, 0x10,
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0x3c, 0xe7 );
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MEMCPY_TEST_CONSTANT ( 0xaf, 0x41, 0x8a, 0x88, 0xb1, 0x4e, 0x52, 0xd4,
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0xe6, 0xc3, 0x76 );
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MEMCPY_TEST_CONSTANT ( 0xdf, 0x43, 0xe4, 0x5d, 0xad, 0x17, 0x35, 0x38,
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0x1a, 0x1d, 0x57, 0x58 );
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MEMCPY_TEST_CONSTANT ( 0x20, 0x52, 0x83, 0x92, 0xb9, 0x85, 0xa4, 0x06,
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0x94, 0xe0, 0x3d, 0x57, 0xd4 );
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MEMCPY_TEST_CONSTANT ( 0xf1, 0x67, 0x31, 0x9e, 0x32, 0x98, 0x27, 0xe9,
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0x8e, 0x62, 0xb4, 0x82, 0x7e, 0x02 );
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MEMCPY_TEST_CONSTANT ( 0x93, 0xc1, 0x55, 0xe3, 0x60, 0xce, 0xac, 0x1e,
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0xae, 0x9d, 0xca, 0xec, 0x92, 0xb3, 0x38 );
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MEMCPY_TEST_CONSTANT ( 0xb3, 0xc1, 0xfa, 0xe7, 0x8a, 0x1c, 0xe4, 0xce,
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0x85, 0xe6, 0x3c, 0xab, 0x1c, 0xa2, 0xaf, 0x7a );
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MEMCPY_TEST_CONSTANT ( 0x9b, 0x6e, 0x1c, 0x48, 0x82, 0xd3, 0x6e, 0x58,
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0xa7, 0xb0, 0xe6, 0xea, 0x6d, 0xee, 0xc8, 0xf8,
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0xaf );
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MEMCPY_TEST_CONSTANT ( 0x86, 0x6d, 0xb0, 0xf5, 0xf2, 0xc9, 0xcd, 0xfe,
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0xfb, 0x38, 0x67, 0xbc, 0x51, 0x9d, 0x25, 0xbc,
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0x09, 0x88 );
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MEMCPY_TEST_CONSTANT ( 0x58, 0xa4, 0x96, 0x9e, 0x98, 0x36, 0xdb, 0xae,
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0x8a, 0x08, 0x7c, 0x64, 0xf9, 0xfb, 0x25, 0xb4,
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0x8e, 0xf3, 0xed );
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MEMCPY_TEST_CONSTANT ( 0xc6, 0x3b, 0x84, 0x3c, 0x76, 0x24, 0x8e, 0x42,
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0x11, 0x1f, 0x09, 0x2e, 0x24, 0xbb, 0x67, 0x71,
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0x3a, 0xca, 0x60, 0xdd );
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MEMCPY_TEST_CONSTANT ( 0x8e, 0x2d, 0xa9, 0x58, 0x87, 0xe2, 0xac, 0x4b,
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0xc8, 0xbf, 0xa2, 0x4e, 0xee, 0x3a, 0xa6, 0x71,
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0x76, 0xee, 0x42, 0x05, 0x6e );
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MEMCPY_TEST_CONSTANT ( 0x8a, 0xda, 0xdf, 0x7b, 0x55, 0x41, 0x8c, 0xcd,
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0x42, 0x40, 0x18, 0xe2, 0x60, 0xc4, 0x7d, 0x64,
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0x00, 0xd5, 0xef, 0xa1, 0x7b, 0x31 );
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MEMCPY_TEST_CONSTANT ( 0xd9, 0x25, 0xcb, 0xbb, 0x9c, 0x1d, 0xdd, 0xcd,
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0xde, 0x96, 0xd9, 0x74, 0x13, 0x95, 0xfe, 0x68,
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0x0b, 0x3d, 0x30, 0x8d, 0x0c, 0x1e, 0x6d );
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MEMCPY_TEST_CONSTANT ( 0x2d, 0x0d, 0x02, 0x33, 0xd6, 0xbe, 0x6c, 0xa6,
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0x0a, 0xab, 0xe5, 0xda, 0xe2, 0xab, 0x78, 0x3c,
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0xd3, 0xdd, 0xea, 0xfa, 0x1a, 0xe4, 0xf4, 0xb3 );
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MEMCPY_TEST_CONSTANT ( 0x6a, 0x34, 0x39, 0xea, 0x29, 0x5f, 0xa6, 0x18,
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0xc1, 0x53, 0x39, 0x78, 0xdb, 0x40, 0xf2, 0x98,
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0x78, 0xcf, 0xee, 0xfd, 0xcd, 0xf8, 0x56, 0xf8,
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0x30 );
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MEMCPY_TEST_CONSTANT ( 0xe4, 0xe5, 0x5a, 0x8d, 0xcf, 0x04, 0x29, 0x7c,
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0xa7, 0xd8, 0x43, 0xbf, 0x0b, 0xbf, 0xe7, 0x68,
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0xf7, 0x8c, 0x81, 0xf9, 0x3f, 0xad, 0xa4, 0x40,
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0x38, 0x82 );
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MEMCPY_TEST_CONSTANT ( 0x71, 0xcd, 0x3d, 0x26, 0xde, 0x11, 0x23, 0xd5,
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0x42, 0x6e, 0x63, 0x72, 0x53, 0xfc, 0x28, 0x06,
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0x4b, 0xe0, 0x2c, 0x07, 0x6b, 0xe8, 0xd9, 0x5f,
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0xf8, 0x74, 0xed );
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MEMCPY_TEST_CONSTANT ( 0x05, 0xb2, 0xae, 0x81, 0x91, 0xc9, 0xa2, 0x5f,
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0xa9, 0x1b, 0x25, 0x7f, 0x32, 0x0c, 0x04, 0x00,
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0xf1, 0x46, 0xab, 0x77, 0x1e, 0x12, 0x27, 0xe7,
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0xf6, 0x1e, 0x0c, 0x29 );
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MEMCPY_TEST_CONSTANT ( 0x0e, 0xca, 0xa5, 0x56, 0x3d, 0x99, 0x99, 0xf9,
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0x6e, 0xdd, 0x93, 0x98, 0xec, 0x8b, 0x5c, 0x71,
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0x0c, 0xb0, 0xe6, 0x12, 0xf2, 0x10, 0x1a, 0xbe,
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0x4a, 0xe0, 0xe3, 0x00, 0xf8 );
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MEMCPY_TEST_CONSTANT ( 0x40, 0xa8, 0x28, 0x5b, 0x12, 0x0d, 0x80, 0x8e,
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0x8a, 0xd9, 0x92, 0x7a, 0x6e, 0x48, 0x8d, 0x14,
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0x4b, 0xc6, 0xce, 0x21, 0x2f, 0x0e, 0x47, 0xbd,
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0xf1, 0xca, 0x0e, 0x1f, 0x65, 0xc4 );
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MEMCPY_TEST_CONSTANT ( 0x84, 0x83, 0x44, 0xe8, 0x1c, 0xbf, 0x23, 0x05,
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0xdf, 0xed, 0x3b, 0xb7, 0x0b, 0x4a, 0x05, 0xec,
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0xb7, 0x6f, 0x1c, 0xfe, 0x05, 0x05, 0x4e, 0xd1,
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0x50, 0x88, 0x81, 0x87, 0x68, 0xf6, 0x66 );
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MEMCPY_TEST_CONSTANT ( 0x0d, 0x1d, 0xcf, 0x3e, 0x7c, 0xf8, 0x12, 0x1b,
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0x96, 0x7f, 0xff, 0x27, 0xca, 0xfe, 0xd3, 0x8b,
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0x10, 0xb9, 0x5d, 0x05, 0xad, 0x50, 0xed, 0x35,
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0x32, 0x9c, 0xe6, 0x3b, 0x73, 0xe0, 0x7d );
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/* Speed tests */
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memcpy_test_speed ( 0, 0, 64 );
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memcpy_test_speed ( 0, 0, 128 );
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memcpy_test_speed ( 0, 0, 256 );
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for ( dest_offset = 0 ; dest_offset < 4 ; dest_offset++ ) {
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for ( src_offset = 0 ; src_offset < 4 ; src_offset++ ) {
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memcpy_test_speed ( dest_offset, src_offset, 4096 );
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}
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}
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}
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/** memcpy() self-test */
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struct self_test memcpy_test __self_test = {
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.name = "memcpy",
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.exec = memcpy_test_exec,
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};
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