diff options
Diffstat (limited to 'qemu/roms/ipxe/src/tests/memcpy_test.c')
| -rw-r--r-- | qemu/roms/ipxe/src/tests/memcpy_test.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/tests/memcpy_test.c b/qemu/roms/ipxe/src/tests/memcpy_test.c new file mode 100644 index 000000000..f1e5503a6 --- /dev/null +++ b/qemu/roms/ipxe/src/tests/memcpy_test.c @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +/** @file + * + * memcpy() self-tests + * + */ + +/* Forcibly enable assertions */ +#undef NDEBUG + +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <ipxe/test.h> +#include <ipxe/profile.h> + +/** Number of sample iterations for profiling */ +#define PROFILE_COUNT 16 + +/* Provide global functions to allow inspection of generated code */ + +void memcpy_0 ( void *dest, void *src ) { memcpy ( dest, src, 0 ); } +void memcpy_1 ( void *dest, void *src ) { memcpy ( dest, src, 1 ); } +void memcpy_2 ( void *dest, void *src ) { memcpy ( dest, src, 2 ); } +void memcpy_3 ( void *dest, void *src ) { memcpy ( dest, src, 3 ); } +void memcpy_4 ( void *dest, void *src ) { memcpy ( dest, src, 4 ); } +void memcpy_5 ( void *dest, void *src ) { memcpy ( dest, src, 5 ); } +void memcpy_6 ( void *dest, void *src ) { memcpy ( dest, src, 6 ); } +void memcpy_7 ( void *dest, void *src ) { memcpy ( dest, src, 7 ); } +void memcpy_8 ( void *dest, void *src ) { memcpy ( dest, src, 8 ); } +void memcpy_9 ( void *dest, void *src ) { memcpy ( dest, src, 9 ); } +void memcpy_10 ( void *dest, void *src ) { memcpy ( dest, src, 10 ); } +void memcpy_11 ( void *dest, void *src ) { memcpy ( dest, src, 11 ); } +void memcpy_12 ( void *dest, void *src ) { memcpy ( dest, src, 12 ); } +void memcpy_13 ( void *dest, void *src ) { memcpy ( dest, src, 13 ); } +void memcpy_14 ( void *dest, void *src ) { memcpy ( dest, src, 14 ); } +void memcpy_15 ( void *dest, void *src ) { memcpy ( dest, src, 15 ); } +void memcpy_16 ( void *dest, void *src ) { memcpy ( dest, src, 16 ); } +void memcpy_17 ( void *dest, void *src ) { memcpy ( dest, src, 17 ); } +void memcpy_18 ( void *dest, void *src ) { memcpy ( dest, src, 18 ); } +void memcpy_19 ( void *dest, void *src ) { memcpy ( dest, src, 19 ); } +void memcpy_20 ( void *dest, void *src ) { memcpy ( dest, src, 20 ); } +void memcpy_21 ( void *dest, void *src ) { memcpy ( dest, src, 21 ); } +void memcpy_22 ( void *dest, void *src ) { memcpy ( dest, src, 22 ); } +void memcpy_23 ( void *dest, void *src ) { memcpy ( dest, src, 23 ); } +void memcpy_24 ( void *dest, void *src ) { memcpy ( dest, src, 24 ); } +void memcpy_25 ( void *dest, void *src ) { memcpy ( dest, src, 25 ); } +void memcpy_26 ( void *dest, void *src ) { memcpy ( dest, src, 26 ); } +void memcpy_27 ( void *dest, void *src ) { memcpy ( dest, src, 27 ); } +void memcpy_28 ( void *dest, void *src ) { memcpy ( dest, src, 28 ); } +void memcpy_29 ( void *dest, void *src ) { memcpy ( dest, src, 29 ); } +void memcpy_30 ( void *dest, void *src ) { memcpy ( dest, src, 30 ); } +void memcpy_31 ( void *dest, void *src ) { memcpy ( dest, src, 31 ); } + +/** + * Force a call to the variable-length implementation of memcpy() + * + * @v dest Destination address + * @v src Source address + * @v len Length of data + * @ret dest Destination address + */ +__attribute__ (( noinline )) void * memcpy_var ( void *dest, const void *src, + size_t len ) { + return memcpy ( dest, src, len ); +} + +/** + * Perform a constant-length memcpy() test + * + * ... Data to copy + */ +#define MEMCPY_TEST_CONSTANT( ... ) do { \ + static const uint8_t src[] = { __VA_ARGS__ }; \ + uint8_t dest_const[ 1 + sizeof ( src ) + 1 ]; \ + uint8_t dest_var[ 1 + sizeof ( src ) + 1 ]; \ + \ + dest_const[0] = 0x33; \ + dest_const[ sizeof ( dest_const ) - 1 ] = 0x44; \ + memcpy ( ( dest_const + 1 ), src, \ + ( sizeof ( dest_const ) - 2 ) ); \ + ok ( dest_const[0] == 0x33 ); \ + ok ( dest_const[ sizeof ( dest_const ) - 1 ] == 0x44 ); \ + ok ( memcmp ( ( dest_const + 1 ), src, \ + ( sizeof ( dest_const ) - 2 ) ) == 0 ); \ + \ + dest_var[0] = 0x55; \ + dest_var[ sizeof ( dest_var ) - 1 ] = 0x66; \ + memcpy_var ( ( dest_var + 1 ), src, \ + ( sizeof ( dest_var ) - 2 ) ); \ + ok ( dest_var[0] == 0x55 ); \ + ok ( dest_var[ sizeof ( dest_var ) - 1 ] == 0x66 ); \ + ok ( memcmp ( ( dest_var + 1 ), src, \ + ( sizeof ( dest_var ) - 2 ) ) == 0 ); \ + } while ( 0 ) + +/** + * Test memcpy() speed + * + * @v dest_offset Destination alignment offset + * @v src_offset Source alignment offset + * @v len Length of data to copy + */ +static void memcpy_test_speed ( unsigned int dest_offset, + unsigned int src_offset, size_t len ) { + struct profiler profiler; + uint8_t *dest; + uint8_t *src; + unsigned int i; + + /* Allocate blocks */ + dest = malloc ( len + dest_offset ); + assert ( dest != NULL ); + src = malloc ( len + src_offset ); + assert ( src != NULL ); + + /* Generate random source data */ + for ( i = 0 ; i < len ; i++ ) + src[ src_offset + i ] = random(); + + /* Check correctness of copied data */ + memcpy ( ( dest + dest_offset ), ( src + src_offset ), len ); + ok ( memcmp ( ( dest + dest_offset ), ( src + src_offset ), + len ) == 0 ); + + /* Profile memcpy() */ + memset ( &profiler, 0, sizeof ( profiler ) ); + for ( i = 0 ; i < PROFILE_COUNT ; i++ ) { + profile_start ( &profiler ); + memcpy ( ( dest + dest_offset ), ( src + src_offset ), len ); + profile_stop ( &profiler ); + } + + /* Free blocks */ + free ( dest ); + free ( src ); + + DBG ( "MEMCPY copied %zd bytes (+%d => +%d) in %ld +/- %ld ticks\n", + len, src_offset, dest_offset, profile_mean ( &profiler ), + profile_stddev ( &profiler ) ); +} + +/** + * Perform memcpy() self-tests + * + */ +static void memcpy_test_exec ( void ) { + unsigned int dest_offset; + unsigned int src_offset; + + /* Constant-length tests */ + MEMCPY_TEST_CONSTANT ( ); + MEMCPY_TEST_CONSTANT ( 0x86 ); + MEMCPY_TEST_CONSTANT ( 0x8c, 0xd3 ); + MEMCPY_TEST_CONSTANT ( 0x4e, 0x08, 0xed ); + MEMCPY_TEST_CONSTANT ( 0xcc, 0x61, 0x8f, 0x70 ); + MEMCPY_TEST_CONSTANT ( 0x6d, 0x28, 0xe0, 0x9e, 0x6d ); + MEMCPY_TEST_CONSTANT ( 0x7d, 0x13, 0x4f, 0xef, 0x17, 0xb3 ); + MEMCPY_TEST_CONSTANT ( 0x38, 0xa7, 0xd4, 0x8d, 0x44, 0x01, 0xfd ); + MEMCPY_TEST_CONSTANT ( 0x45, 0x9f, 0xf4, 0xf9, 0xf3, 0x0f, 0x99, 0x43 ); + MEMCPY_TEST_CONSTANT ( 0x69, 0x8c, 0xf6, 0x12, 0x79, 0x70, 0xd8, 0x1e, + 0x9d ); + MEMCPY_TEST_CONSTANT ( 0xbe, 0x53, 0xb4, 0xb7, 0xdd, 0xe6, 0x35, 0x10, + 0x3c, 0xe7 ); + MEMCPY_TEST_CONSTANT ( 0xaf, 0x41, 0x8a, 0x88, 0xb1, 0x4e, 0x52, 0xd4, + 0xe6, 0xc3, 0x76 ); + MEMCPY_TEST_CONSTANT ( 0xdf, 0x43, 0xe4, 0x5d, 0xad, 0x17, 0x35, 0x38, + 0x1a, 0x1d, 0x57, 0x58 ); + MEMCPY_TEST_CONSTANT ( 0x20, 0x52, 0x83, 0x92, 0xb9, 0x85, 0xa4, 0x06, + 0x94, 0xe0, 0x3d, 0x57, 0xd4 ); + MEMCPY_TEST_CONSTANT ( 0xf1, 0x67, 0x31, 0x9e, 0x32, 0x98, 0x27, 0xe9, + 0x8e, 0x62, 0xb4, 0x82, 0x7e, 0x02 ); + MEMCPY_TEST_CONSTANT ( 0x93, 0xc1, 0x55, 0xe3, 0x60, 0xce, 0xac, 0x1e, + 0xae, 0x9d, 0xca, 0xec, 0x92, 0xb3, 0x38 ); + MEMCPY_TEST_CONSTANT ( 0xb3, 0xc1, 0xfa, 0xe7, 0x8a, 0x1c, 0xe4, 0xce, + 0x85, 0xe6, 0x3c, 0xab, 0x1c, 0xa2, 0xaf, 0x7a ); + MEMCPY_TEST_CONSTANT ( 0x9b, 0x6e, 0x1c, 0x48, 0x82, 0xd3, 0x6e, 0x58, + 0xa7, 0xb0, 0xe6, 0xea, 0x6d, 0xee, 0xc8, 0xf8, + 0xaf ); + MEMCPY_TEST_CONSTANT ( 0x86, 0x6d, 0xb0, 0xf5, 0xf2, 0xc9, 0xcd, 0xfe, + 0xfb, 0x38, 0x67, 0xbc, 0x51, 0x9d, 0x25, 0xbc, + 0x09, 0x88 ); + MEMCPY_TEST_CONSTANT ( 0x58, 0xa4, 0x96, 0x9e, 0x98, 0x36, 0xdb, 0xae, + 0x8a, 0x08, 0x7c, 0x64, 0xf9, 0xfb, 0x25, 0xb4, + 0x8e, 0xf3, 0xed ); + MEMCPY_TEST_CONSTANT ( 0xc6, 0x3b, 0x84, 0x3c, 0x76, 0x24, 0x8e, 0x42, + 0x11, 0x1f, 0x09, 0x2e, 0x24, 0xbb, 0x67, 0x71, + 0x3a, 0xca, 0x60, 0xdd ); + MEMCPY_TEST_CONSTANT ( 0x8e, 0x2d, 0xa9, 0x58, 0x87, 0xe2, 0xac, 0x4b, + 0xc8, 0xbf, 0xa2, 0x4e, 0xee, 0x3a, 0xa6, 0x71, + 0x76, 0xee, 0x42, 0x05, 0x6e ); + MEMCPY_TEST_CONSTANT ( 0x8a, 0xda, 0xdf, 0x7b, 0x55, 0x41, 0x8c, 0xcd, + 0x42, 0x40, 0x18, 0xe2, 0x60, 0xc4, 0x7d, 0x64, + 0x00, 0xd5, 0xef, 0xa1, 0x7b, 0x31 ); + MEMCPY_TEST_CONSTANT ( 0xd9, 0x25, 0xcb, 0xbb, 0x9c, 0x1d, 0xdd, 0xcd, + 0xde, 0x96, 0xd9, 0x74, 0x13, 0x95, 0xfe, 0x68, + 0x0b, 0x3d, 0x30, 0x8d, 0x0c, 0x1e, 0x6d ); + MEMCPY_TEST_CONSTANT ( 0x2d, 0x0d, 0x02, 0x33, 0xd6, 0xbe, 0x6c, 0xa6, + 0x0a, 0xab, 0xe5, 0xda, 0xe2, 0xab, 0x78, 0x3c, + 0xd3, 0xdd, 0xea, 0xfa, 0x1a, 0xe4, 0xf4, 0xb3 ); + MEMCPY_TEST_CONSTANT ( 0x6a, 0x34, 0x39, 0xea, 0x29, 0x5f, 0xa6, 0x18, + 0xc1, 0x53, 0x39, 0x78, 0xdb, 0x40, 0xf2, 0x98, + 0x78, 0xcf, 0xee, 0xfd, 0xcd, 0xf8, 0x56, 0xf8, + 0x30 ); + MEMCPY_TEST_CONSTANT ( 0xe4, 0xe5, 0x5a, 0x8d, 0xcf, 0x04, 0x29, 0x7c, + 0xa7, 0xd8, 0x43, 0xbf, 0x0b, 0xbf, 0xe7, 0x68, + 0xf7, 0x8c, 0x81, 0xf9, 0x3f, 0xad, 0xa4, 0x40, + 0x38, 0x82 ); + MEMCPY_TEST_CONSTANT ( 0x71, 0xcd, 0x3d, 0x26, 0xde, 0x11, 0x23, 0xd5, + 0x42, 0x6e, 0x63, 0x72, 0x53, 0xfc, 0x28, 0x06, + 0x4b, 0xe0, 0x2c, 0x07, 0x6b, 0xe8, 0xd9, 0x5f, + 0xf8, 0x74, 0xed ); + MEMCPY_TEST_CONSTANT ( 0x05, 0xb2, 0xae, 0x81, 0x91, 0xc9, 0xa2, 0x5f, + 0xa9, 0x1b, 0x25, 0x7f, 0x32, 0x0c, 0x04, 0x00, + 0xf1, 0x46, 0xab, 0x77, 0x1e, 0x12, 0x27, 0xe7, + 0xf6, 0x1e, 0x0c, 0x29 ); + MEMCPY_TEST_CONSTANT ( 0x0e, 0xca, 0xa5, 0x56, 0x3d, 0x99, 0x99, 0xf9, + 0x6e, 0xdd, 0x93, 0x98, 0xec, 0x8b, 0x5c, 0x71, + 0x0c, 0xb0, 0xe6, 0x12, 0xf2, 0x10, 0x1a, 0xbe, + 0x4a, 0xe0, 0xe3, 0x00, 0xf8 ); + MEMCPY_TEST_CONSTANT ( 0x40, 0xa8, 0x28, 0x5b, 0x12, 0x0d, 0x80, 0x8e, + 0x8a, 0xd9, 0x92, 0x7a, 0x6e, 0x48, 0x8d, 0x14, + 0x4b, 0xc6, 0xce, 0x21, 0x2f, 0x0e, 0x47, 0xbd, + 0xf1, 0xca, 0x0e, 0x1f, 0x65, 0xc4 ); + MEMCPY_TEST_CONSTANT ( 0x84, 0x83, 0x44, 0xe8, 0x1c, 0xbf, 0x23, 0x05, + 0xdf, 0xed, 0x3b, 0xb7, 0x0b, 0x4a, 0x05, 0xec, + 0xb7, 0x6f, 0x1c, 0xfe, 0x05, 0x05, 0x4e, 0xd1, + 0x50, 0x88, 0x81, 0x87, 0x68, 0xf6, 0x66 ); + MEMCPY_TEST_CONSTANT ( 0x0d, 0x1d, 0xcf, 0x3e, 0x7c, 0xf8, 0x12, 0x1b, + 0x96, 0x7f, 0xff, 0x27, 0xca, 0xfe, 0xd3, 0x8b, + 0x10, 0xb9, 0x5d, 0x05, 0xad, 0x50, 0xed, 0x35, + 0x32, 0x9c, 0xe6, 0x3b, 0x73, 0xe0, 0x7d ); + + /* Speed tests */ + memcpy_test_speed ( 0, 0, 64 ); + memcpy_test_speed ( 0, 0, 128 ); + memcpy_test_speed ( 0, 0, 256 ); + for ( dest_offset = 0 ; dest_offset < 4 ; dest_offset++ ) { + for ( src_offset = 0 ; src_offset < 4 ; src_offset++ ) { + memcpy_test_speed ( dest_offset, src_offset, 4096 ); + } + } +} + +/** memcpy() self-test */ +struct self_test memcpy_test __self_test = { + .name = "memcpy", + .exec = memcpy_test_exec, +}; |