mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-13 14:25:32 +00:00
35 lines
801 B
C++
35 lines
801 B
C++
|
// Copyright 2014 The Emscripten Authors. All rights reserved.
|
||
|
|
// Emscripten is available under two separate licenses, the MIT license and the
|
||
|
|
// University of Illinois/NCSA Open Source License. Both these licenses can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#define ALIGN(num_bytes) __attribute__((aligned(num_bytes)))
|
||
|
|
|
||
|
|
struct Aligned {
|
||
|
|
char ALIGN(4) a4;
|
||
|
|
char ALIGN(8) a8;
|
||
|
|
char ALIGN(16) a16;
|
||
|
|
char ALIGN(32) a32;
|
||
|
|
};
|
||
|
|
|
||
|
|
__attribute__((noinline))
|
||
|
|
void Test(const void* p, int size) {
|
||
|
|
printf("align %d: %d\n", size, reinterpret_cast<size_t>(p) % size);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
Aligned a;
|
||
|
|
Test(&a.a4, 4);
|
||
|
|
Test(&a.a8, 8);
|
||
|
|
Test(&a.a16, 16);
|
||
|
|
Test(&a.a32, 32);
|
||
|
|
|
||
|
|
int p = reinterpret_cast<size_t>(&a);
|
||
|
|
printf("base align: %d, %d, %d, %d\n", p%4, p%8, p%16, p%32);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|