When the s390x maps a page or writes happen to a page, the R and C
bits get updated. The easiest way to implement this in qemu is to
simply update them whenever we map a TLB translation and act according
to the permissions.
Signed-off-by: Alexander Graf <agraf@suse.de>
#define _PAGE_RO 0x200 /* HW read-only bit */
#define _PAGE_INVALID 0x400 /* HW invalid bit */
+#define SK_C (0x1 << 1)
+#define SK_R (0x1 << 2)
+#define SK_F (0x1 << 3)
+#define SK_ACC_MASK (0xf << 4)
/* EBCDIC handling */
target_ulong *raddr, int *flags)
{
int r = -1;
+ uint8_t *sk;
*flags = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
vaddr &= TARGET_PAGE_MASK;
*raddr = *raddr + env->psa;
}
+ if (*raddr <= ram_size) {
+ sk = &env->storage_keys[*raddr / TARGET_PAGE_SIZE];
+ if (*flags & PAGE_READ) {
+ *sk |= SK_R;
+ }
+
+ if (*flags & PAGE_WRITE) {
+ *sk |= SK_C;
+ }
+ }
+
return r;
}
return 0;
}
- /* XXX maybe use qemu's internal keys? */
return env->storage_keys[addr / TARGET_PAGE_SIZE];
}