diff options
Diffstat (limited to 'sysdeps/aarch64/libc-mtag.h')
| -rw-r--r-- | sysdeps/aarch64/libc-mtag.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sysdeps/aarch64/libc-mtag.h b/sysdeps/aarch64/libc-mtag.h index f58402c..da1b6be 100644 --- a/sysdeps/aarch64/libc-mtag.h +++ b/sysdeps/aarch64/libc-mtag.h @@ -35,17 +35,21 @@ #define __MTAG_MMAP_FLAGS PROT_MTE /* Set the tags for a region of memory, which must have size and alignment - that are multiples of __MTAG_GRANULE_SIZE. Size cannot be zero. - void *__libc_mtag_tag_region (const void *, size_t) */ + that are multiples of __MTAG_GRANULE_SIZE. Size cannot be zero. */ void *__libc_mtag_tag_region (void *, size_t); /* Optimized equivalent to __libc_mtag_tag_region followed by memset to 0. */ void *__libc_mtag_tag_zero_region (void *, size_t); /* Convert address P to a pointer that is tagged correctly for that - location. - void *__libc_mtag_address_get_tag (void*) */ -void *__libc_mtag_address_get_tag (void *); + location. */ +static __always_inline void * +__libc_mtag_address_get_tag (void *p) +{ + register void *x0 asm ("x0") = p; + asm (".inst 0xd9600000 /* ldg x0, [x0] */" : "+r" (x0)); + return x0; +} /* Assign a new (random) tag to a pointer P (does not adjust the tag on the memory addressed). |