| /* |
| * Copyright 2017, Data61, CSIRO (ABN 41 687 119 230) |
| * |
| * SPDX-License-Identifier: BSD-2-Clause |
| */ |
| |
| #include <autoconf.h> |
| |
| /* Writes the current value in xmm0 to the stack, then reads it back. |
| * This function should cause a general protection fault if the stack |
| * is not correctly aligned. */ |
| .global movaps_test |
| movaps_test: |
| /* Align the stack to 16 bytes assuming: |
| * - 16 byte stack alignment before this function was called |
| * - the register-sized return address has been pushed by the |
| * call and nothing else |
| */ |
| #define STACK_OFFSET_BYTES $(16 - (CONFIG_WORD_SIZE / 8)) |
| sub STACK_OFFSET_BYTES, %esp |
| |
| /* Push and pop the %xmm0 */ |
| sub $16, %esp |
| movdqa %xmm0, (%esp) |
| movdqa (%esp), %xmm0 |
| add $16, %esp |
| |
| /* Compensate for stack alignment */ |
| add STACK_OFFSET_BYTES, %esp |
| |
| ret |
