forked from mirror/qemu
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
713 B
C
32 lines
713 B
C
/*
|
|
* Memory tagging, unaligned access crossing pages.
|
|
* https://gitlab.com/qemu-project/qemu/-/issues/403
|
|
*
|
|
* Copyright (c) 2021 Linaro Ltd
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "mte.h"
|
|
|
|
int main(int ac, char **av)
|
|
{
|
|
void *p;
|
|
|
|
enable_mte(PR_MTE_TCF_SYNC);
|
|
p = alloc_mte_mem(2 * 0x1000);
|
|
|
|
/* Tag the pointer. */
|
|
p = (void *)((unsigned long)p | (1ul << 56));
|
|
|
|
/* Store tag in sequential granules. */
|
|
asm("stg %0, [%0]" : : "r"(p + 0x0ff0));
|
|
asm("stg %0, [%0]" : : "r"(p + 0x1000));
|
|
|
|
/*
|
|
* Perform an unaligned store with tag 1 crossing the pages.
|
|
* Failure dies with SIGSEGV.
|
|
*/
|
|
asm("str %0, [%0]" : : "r"(p + 0x0ffc));
|
|
return 0;
|
|
}
|