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[test] Add memcpy() self-tests

Signed-off-by: Michael Brown <mcb30@ipxe.org>
tags/v1.20.1
Michael Brown 12 years ago
parent
commit
80cdf6acc7
2 changed files with 257 additions and 34 deletions
  1. 256
    34
      src/tests/memcpy_test.c
  2. 1
    0
      src/tests/tests.c

+ 256
- 34
src/tests/memcpy_test.c View File

@@ -1,39 +1,261 @@
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+/*
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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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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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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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+
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+/* Forcibly enable assertions */
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+#undef NDEBUG
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+
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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>
2 36
 
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-/*
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- * This file exists for testing the compilation of memcpy() with the
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- * various constant-length optimisations.
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+/* Provide global functions to allow inspection of generated code */
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+
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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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+/**
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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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+/**
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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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+/**
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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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+	uint8_t *dest;
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+	uint8_t *src;
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+	unsigned int i;
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+	unsigned long elapsed;
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+
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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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+
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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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+
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+	/* Perform memcpy() */
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+	simple_profile();
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+	memcpy ( ( dest + dest_offset ), ( src + src_offset ), len );
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+	elapsed = simple_profile();
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+
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+	/* Check copied data */
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+	ok ( memcmp ( ( dest + dest_offset ), ( src + src_offset ),
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+		      len ) == 0 );
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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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+
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+	DBG ( "MEMCPY copied %zd bytes (+%d => +%d) in %ld ticks\n",
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+	      len, src_offset, dest_offset, elapsed );
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+}
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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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+
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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 );
237
+	MEMCPY_TEST_CONSTANT ( 0x84, 0x83, 0x44, 0xe8, 0x1c, 0xbf, 0x23, 0x05,
238
+			       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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+
246
+	/* Speed tests */
247
+	memcpy_test_speed ( 0, 0, 64 );
248
+	memcpy_test_speed ( 0, 0, 128 );
249
+	memcpy_test_speed ( 0, 0, 256 );
250
+	for ( dest_offset = 0 ; dest_offset < 4 ; dest_offset++ ) {
251
+		for ( src_offset = 0 ; src_offset < 4 ; src_offset++ ) {
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+			memcpy_test_speed ( dest_offset, src_offset, 4096 );
253
+		}
254
+	}
255
+}
8 256
 
9
-#define __regparm __attribute__ (( regparm(3) ))
10
-
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-void __regparm memcpy_0 ( void *dest, void *src ) { memcpy ( dest, src, 0 ); }
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-void __regparm memcpy_1 ( void *dest, void *src ) { memcpy ( dest, src, 1 ); }
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-void __regparm memcpy_2 ( void *dest, void *src ) { memcpy ( dest, src, 2 ); }
14
-void __regparm memcpy_3 ( void *dest, void *src ) { memcpy ( dest, src, 3 ); }
15
-void __regparm memcpy_4 ( void *dest, void *src ) { memcpy ( dest, src, 4 ); }
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-void __regparm memcpy_5 ( void *dest, void *src ) { memcpy ( dest, src, 5 ); }
17
-void __regparm memcpy_6 ( void *dest, void *src ) { memcpy ( dest, src, 6 ); }
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-void __regparm memcpy_7 ( void *dest, void *src ) { memcpy ( dest, src, 7 ); }
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-void __regparm memcpy_8 ( void *dest, void *src ) { memcpy ( dest, src, 8 ); }
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-void __regparm memcpy_9 ( void *dest, void *src ) { memcpy ( dest, src, 9 ); }
21
-void __regparm memcpy_10 ( void *dest, void *src ) { memcpy ( dest, src, 10 ); }
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-void __regparm memcpy_11 ( void *dest, void *src ) { memcpy ( dest, src, 11 ); }
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-void __regparm memcpy_12 ( void *dest, void *src ) { memcpy ( dest, src, 12 ); }
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-void __regparm memcpy_13 ( void *dest, void *src ) { memcpy ( dest, src, 13 ); }
25
-void __regparm memcpy_14 ( void *dest, void *src ) { memcpy ( dest, src, 14 ); }
26
-void __regparm memcpy_15 ( void *dest, void *src ) { memcpy ( dest, src, 15 ); }
27
-void __regparm memcpy_16 ( void *dest, void *src ) { memcpy ( dest, src, 16 ); }
28
-void __regparm memcpy_17 ( void *dest, void *src ) { memcpy ( dest, src, 17 ); }
29
-void __regparm memcpy_18 ( void *dest, void *src ) { memcpy ( dest, src, 18 ); }
30
-void __regparm memcpy_19 ( void *dest, void *src ) { memcpy ( dest, src, 19 ); }
31
-void __regparm memcpy_20 ( void *dest, void *src ) { memcpy ( dest, src, 20 ); }
32
-void __regparm memcpy_21 ( void *dest, void *src ) { memcpy ( dest, src, 21 ); }
33
-void __regparm memcpy_22 ( void *dest, void *src ) { memcpy ( dest, src, 22 ); }
34
-void __regparm memcpy_23 ( void *dest, void *src ) { memcpy ( dest, src, 23 ); }
35
-void __regparm memcpy_24 ( void *dest, void *src ) { memcpy ( dest, src, 24 ); }
36
-void __regparm memcpy_25 ( void *dest, void *src ) { memcpy ( dest, src, 25 ); }
37
-void __regparm memcpy_26 ( void *dest, void *src ) { memcpy ( dest, src, 26 ); }
38
-void __regparm memcpy_27 ( void *dest, void *src ) { memcpy ( dest, src, 27 ); }
39
-void __regparm memcpy_28 ( void *dest, void *src ) { memcpy ( dest, src, 28 ); }
257
+/** memcpy() self-test */
258
+struct self_test memcpy_test __self_test = {
259
+	.name = "memcpy",
260
+	.exec = memcpy_test_exec,
261
+};

+ 1
- 0
src/tests/tests.c View File

@@ -25,6 +25,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
25 25
  */
26 26
 
27 27
 /* Drag in all applicable self-tests */
28
+REQUIRE_OBJECT ( memcpy_test );
28 29
 REQUIRE_OBJECT ( list_test );
29 30
 REQUIRE_OBJECT ( byteswap_test );
30 31
 REQUIRE_OBJECT ( base64_test );

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