06bf3b153a
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20190201195404.30486-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
24 lines
443 B
C
24 lines
443 B
C
#include <assert.h>
|
|
#include <sys/prctl.h>
|
|
|
|
asm(".arch armv8.4-a");
|
|
|
|
#ifndef PR_PAC_RESET_KEYS
|
|
#define PR_PAC_RESET_KEYS 54
|
|
#define PR_PAC_APDAKEY (1 << 2)
|
|
#endif
|
|
|
|
int main()
|
|
{
|
|
int x;
|
|
void *p0 = &x, *p1, *p2;
|
|
|
|
asm volatile("pacdza %0" : "=r"(p1) : "0"(p0));
|
|
prctl(PR_PAC_RESET_KEYS, PR_PAC_APDAKEY, 0, 0, 0);
|
|
asm volatile("pacdza %0" : "=r"(p2) : "0"(p0));
|
|
|
|
assert(p1 != p0);
|
|
assert(p1 != p2);
|
|
return 0;
|
|
}
|