You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.5 KiB
73 lines
1.5 KiB
/*
|
|
* Copyright 2002-2019 Intel Corporation.
|
|
*
|
|
* This software is provided to you as Sample Source Code as defined in the accompanying
|
|
* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
|
|
* section 1.L.
|
|
*
|
|
* This software and the related documents are provided as is, with no express or implied
|
|
* warranties, other than those that are expressly stated in the License.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <memory.h>
|
|
|
|
#if defined(TARGET_WINDOWS)
|
|
#define EXPORT_CSYM __declspec( dllexport )
|
|
#else
|
|
#define EXPORT_CSYM
|
|
#endif
|
|
|
|
typedef union {
|
|
unsigned char *p;
|
|
unsigned long l;
|
|
} PTOL;
|
|
|
|
EXPORT_CSYM unsigned long ptr2long(unsigned char *ptr)
|
|
{
|
|
PTOL cast;
|
|
cast.p = ptr;
|
|
return cast.l;
|
|
}
|
|
|
|
EXPORT_CSYM void set_value(unsigned char *buf, unsigned int val)
|
|
{
|
|
unsigned int *arr = (unsigned int *)buf;
|
|
arr[0] = val;
|
|
}
|
|
|
|
EXPORT_CSYM int check_align(unsigned char *ptr)
|
|
{
|
|
if (ptr2long(ptr) % 16)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
// align the buffer on 16 and call set value in a loop
|
|
unsigned char buff[1000];
|
|
unsigned char *ptr = buff + (16 - (ptr2long(buff) % 16));
|
|
int i;
|
|
|
|
memset(buff, 0, 1000);
|
|
|
|
printf("Base pointer: %p\n", ptr);
|
|
for (i = 0; i < 20; i++)
|
|
set_value(ptr + 16 * i, 1);
|
|
|
|
for (i = 0; i < 1000; i++)
|
|
{
|
|
if (buff[i] && check_align(&buff[i]))
|
|
{
|
|
printf("Align check failed on %p\n", &buff[i]);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
printf("Align check ok\n");
|
|
exit(0);
|
|
}
|