cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

check_addoq.c (965B)

      1#include <stdio.h>
      2#include <stdlib.h>
      3#include <stdint.h>
      4#include "sys.h"
      5#include "crisutils.h"
      6
      7/* this would be better to do in asm, it's an orgy in GCC inline asm now.  */
      8
      9/* ACR will be clobbered.  */
     10#define cris_addoq(o, v) \
     11	asm volatile ("addoq\t%1, %0, $acr\n" : : "r" (v), "i" (o) : "acr");
     12
     13
     14int main(void)
     15{
     16	int x[3] = {0x55aa77ff, 0xccff2244, 0x88ccee19};
     17	int *p, *t = x + 1;
     18
     19	cris_tst_cc_init();
     20	asm volatile ("setf\tzvnc\n");
     21	cris_addoq(0, t);
     22	cris_tst_cc(1, 1, 1, 1);
     23	asm volatile ("move.d\t$acr, %0\n" : "=r" (p));
     24	if (*p != 0xccff2244)
     25		err();
     26
     27	cris_tst_cc_init();
     28	asm volatile ("setf\tzvnc\n");
     29	cris_addoq(4, t);
     30	cris_tst_cc(0, 0, 0, 0);
     31	asm volatile ("move.d\t$acr, %0\n" : "=r" (p));
     32	if (*p != 0x88ccee19)
     33		err();
     34
     35	cris_tst_cc_init();
     36	asm volatile ("clearf\tzvnc\n");
     37	cris_addoq(-8, t + 1);
     38	cris_tst_cc(0, 0, 0, 0);
     39	asm volatile ("move.d\t$acr, %0\n" : "=r" (p));
     40	if (*p != 0x55aa77ff)
     41		err();
     42	pass();
     43	return 0;
     44}