diff options
Diffstat (limited to 'sysdeps/aarch64/__alloc_gcs.c')
| -rw-r--r-- | sysdeps/aarch64/__alloc_gcs.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sysdeps/aarch64/__alloc_gcs.c b/sysdeps/aarch64/__alloc_gcs.c index e70b459..b98e5fc 100644 --- a/sysdeps/aarch64/__alloc_gcs.c +++ b/sysdeps/aarch64/__alloc_gcs.c @@ -15,6 +15,8 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ +#include "aarch64-gcs.h" + #include <sysdep.h> #include <unistd.h> #include <sys/mman.h> @@ -34,7 +36,7 @@ map_shadow_stack (void *addr, size_t size, unsigned long flags) #define GCS_ALTSTACK_RESERVE 160 void * -__alloc_gcs (size_t stack_size, void **ss_base, size_t *ss_size) +__alloc_gcs (size_t stack_size, struct gcs_record *gcs) { size_t size = (stack_size / 2 + GCS_ALTSTACK_RESERVE) & -8UL; if (size > GCS_MAX_SIZE) @@ -45,9 +47,6 @@ __alloc_gcs (size_t stack_size, void **ss_base, size_t *ss_size) if (base == MAP_FAILED) return NULL; - *ss_base = base; - *ss_size = size; - uint64_t *gcsp = (uint64_t *) ((char *) base + size); /* Skip end of GCS token. */ gcsp--; @@ -58,6 +57,14 @@ __alloc_gcs (size_t stack_size, void **ss_base, size_t *ss_size) __munmap (base, size); return NULL; } + + if (gcs != NULL) + { + gcs->gcs_base = base; + gcs->gcs_token = gcsp; + gcs->gcs_size = size; + } + /* Return the target GCS pointer for context switch. */ return gcsp + 1; } |