| #include <stdint.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| alignas(16) uint8_t buf[32]; | |
| // This uses inline assembly to generate an instruction that writes to a large | |
| // block of memory. If it fails on your compiler/architecture, please add | |
| // appropriate code to generate a large write to "buf". If you cannot write at | |
| // least 2*sizeof(void*) bytes with a single instruction, you will have to skip | |
| // this test. | |
| int main() { | |
| memset(buf, UINT32_MAX, 8); | |
| #if defined(__i386__) || defined(__x86_64__) | |
| asm volatile ("movdqa %%xmm0, %0" : : "m"(buf)); | |
| #elif defined(__arm__) | |
| asm volatile ("stm %0, { r0, r1, r2, r3 }" : : "r"(buf)); | |
| #elif defined(__aarch64__) | |
| asm volatile ("stp x0, x1, %0" : : "m"(buf)); | |
| #elif defined(__mips__) | |
| asm volatile ("lw $2, %0" : : "m"(buf)); | |
| #endif | |
| return 0; | |
| } |