Developed Guarded Control Stack (GCS) support for the AArch64 linker in the espressif/binutils-gdb repository, focusing on enhancing visibility and control over GCS behavior during the linking process. The work involved implementing the GCS feature bit, adding readelf support to display GCS properties, and introducing new linker options to manage GCS behavior and reporting. Robustness improvements ensured accurate handling and reporting of GCS feature markings in input objects. This feature was delivered using C and leveraged expertise in aarch64, compiler toolchains, and embedded systems, resulting in a more transparent and configurable linking workflow for GCS-enabled projects.