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kolibrios/programs/develop/ktcc/trunk/libctest/string_memcpy.c

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#include <string.h>
#include <stdlib.h>
//#include <stdint.h>
#include "test.h"
static char buf[512];
static void *(*volatile pmemcpy)(void *restrict, const void *restrict2, size_t);
static void *aligned(void *p) {
return (void*)(((uintptr_t)p + 63) & -64U);
}
#define N 80
static void test_align(int dalign, int salign, int len)
{
char *src = aligned(buf);
char *dst = aligned(buf + 128);
char *want = aligned(buf + 256);
char *p;
int i;
if (salign + len > N || dalign + len > N)
abort();
for (i = 0; i < N; i++) {
src[i] = '#';
dst[i] = want[i] = ' ';
}
for (i = 0; i < len; i++)
src[salign+i] = want[dalign+i] = '0'+i;
p = pmemcpy(dst+dalign, src+salign, len);
if (p != dst+dalign)
t_error("memcpy(%p,...) returned %p\n", dst+dalign, p);
for (i = 0; i < N; i++)
if (dst[i] != want[i]) {
t_error("memcpy(align %d, align %d, %d) failed\n", dalign, salign, len);
t_printf("got : %.*s\n", dalign+len+1, dst);
t_printf("want: %.*s\n", dalign+len+1, want);
break;
}
}
int main(void)
{
int i,j,k;
pmemcpy = memcpy;
for (i = 0; i < 16; i++)
for (j = 0; j < 16; j++)
for (k = 0; k < 64; k++)
test_align(i,j,k);
printf("%s finished\n", __FILE__);
return t_status;
}