vatrog-vm-introspection-engine/src/handlers/semsig_stub.c

/* semsig_stub.c - the OFF (no-backend) path of the semantic-signature feature.
 *
 * Built into the library ONLY when VMIE_DISASM=OFF (the default). It provides
 * the full public generic surface so the ABI is stable - linking never fails
 * for a missing symbol - while the feature is not present:
 *   semsig_hash         -> 0  (the same "no hash" sentinel as func_hash)
 *   semsig_backend_name -> "none"
 * Callers tell "feature off" from "empty/undecodable function" via the compile-
 * time macro VMIE_HAVE_DISASM (0 here), NOT via the runtime 0.
 *
 * In the OFF build semsig.c is NOT compiled (it calls the backend decode, which
 * does not exist without a backend); this stub is the whole generic symbol. See
 * CMakeLists.txt for the source-selection logic.
 */
#include <stdint.h>
#include "semsig.h"

uint64_t semsig_hash(mem_view_t fn) __attribute__((cold));
uint64_t semsig_hash(mem_view_t fn) {
    (void)fn;
    return 0;   /* feature not built: same sentinel as func_hash */
}

const char* semsig_backend_name(void) {
    return "none";
}