From 5be9bb15b2dce34929d8eebc1fc543363e1cf4ad Mon Sep 17 00:00:00 2001 From: Jeff Johnston Date: Tue, 4 Oct 2011 18:43:14 +0000 Subject: [PATCH] 2011-10-04 Greta Yorsh * testsuite/newlib.string/memcpy-1.c: New test. --- newlib/ChangeLog | 4 + newlib/testsuite/newlib.string/memcpy-1.c | 160 ++++++++++++++++++++++ 2 files changed, 164 insertions(+) create mode 100644 newlib/testsuite/newlib.string/memcpy-1.c diff --git a/newlib/ChangeLog b/newlib/ChangeLog index e1cf784d4..3eefd033b 100644 --- a/newlib/ChangeLog +++ b/newlib/ChangeLog @@ -1,3 +1,7 @@ +2011-10-04 Greta Yorsh + + * testsuite/newlib.string/memcpy-1.c: New test. + 2011-10-04 Nick Clifton * libc/machine/arm/memcpy.S: Fix unaligned access copying. diff --git a/newlib/testsuite/newlib.string/memcpy-1.c b/newlib/testsuite/newlib.string/memcpy-1.c new file mode 100644 index 000000000..145db1a5c --- /dev/null +++ b/newlib/testsuite/newlib.string/memcpy-1.c @@ -0,0 +1,160 @@ +/* + * Copyright (c) 2011 ARM Ltd + * 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. + * 3. The name of the company may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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. + */ + +#include +#include +#include +#include + +#ifndef BUFF_SIZE +#define BUFF_SIZE 1024 +#endif + +#ifndef START_COPY +#define START_COPY 256 +#endif + +#ifndef MAX_BLOCK_SIZE +#define MAX_BLOCK_SIZE 128 +#endif + +#ifndef MAX_OFFSET +#define MAX_OFFSET 3 +#endif + +#if (START_COPY + MAX_OFFSET + MAX_BLOCK_SIZE >= BUFF_SIZE) +#error "Buffer overrun: START_COPY + MAX_OFFSET + MAX_BLOCK_SIZE >= BUFF_SIZE." +#endif + +#define TOO_MANY_ERRORS 11 +int errors = 0; + +void +print_error (char const* msg, ...) +{ + errors++; + if (errors == TOO_MANY_ERRORS) + { + fprintf (stderr, "Too many errors.\n"); + } + else if (errors < TOO_MANY_ERRORS) + { + va_list ap; + va_start (ap, msg); + vfprintf (stderr, msg, ap); + va_end (ap); + } + else + { + /* Further errors omitted. */ + } +} + +int +main (void) +{ + /* Allocate buffers to read and write from. */ + char src[BUFF_SIZE], dest[BUFF_SIZE], backup_src[BUFF_SIZE]; + + /* Fill the source buffer with non-null values, reproducable random data. */ + srand (1539); + int i, j; + unsigned sa; + unsigned da; + unsigned n; + for (i = 0; i < BUFF_SIZE; i++) + { + src[i] = (char)rand () | 1; + backup_src[i] = src[i]; + } + + /* Make calls to memcpy with block sizes ranging between 1 and + MAX_BLOCK_SIZE bytes, aligned and misaligned source and destination. */ + for (sa = 0; sa <= MAX_OFFSET; sa++) + for (da = 0; da <= MAX_OFFSET; da++) + for (n = 1; n <= MAX_BLOCK_SIZE; n++) + { + printf ("."); + /* Zero dest so we can check it properly after the copying. */ + for (j = 0; j < BUFF_SIZE; j++) + dest[j] = 0; + + void *ret = memcpy (dest + START_COPY + da, src + sa, n); + + /* Check return value. */ + if (ret != (dest + START_COPY + da)) + print_error ("\nFailed: wrong return value in memcpy of %u bytes " + "with src_align %u and dst_align %u. " + "Return value and dest should be the same" + "(ret is %p, dest is %p)\n", + n, sa, da, ret, dest + START_COPY + da); + + /* Check that content of the destination buffer + is the same as the source buffer, and + memory outside destination buffer is not modified. */ + for (j = 0; j < BUFF_SIZE; j++) + if (j < START_COPY + da) + { + if (dest[j] != 0) + print_error ("\nFailed: after memcpy of %u bytes " + "with src_align %u and dst_align %u, " + "byte %u before the start of dest is not 0.\n", + n, sa, da, START_COPY - j); + } + else if (j < START_COPY + da + n) + { + i = j - START_COPY - da; + if (dest[j] != (src + sa)[i]) + print_error ("\nFailed: after memcpy of %u bytes " + "with src_align %u and dst_align %u, " + "byte %u in dest and src are not the same.\n", + n, sa, da, i); + } + else if (dest[j] != 0) + { + print_error ("\nFailed: after memcpy of %u bytes " + "with src_align %u and dst_align %u, " + "byte %u after the end of dest is not 0.\n", + n, sa, da, j - START_COPY - da - n); + } + + /* Check src is not modified. */ + for (j = 0; j < BUFF_SIZE; j++) + if (src[i] != backup_src[i]) + print_error ("\nFailed: after memcpy of %u bytes " + "with src_align %u and dst_align %u, " + "byte %u of src is modified.\n", + n, sa, da, j); + } + + printf ("\n"); + if (errors != 0) + abort (); + + exit (0); +}