asahi: wrap: Handle freeing shmems

Needed for some Metal demos that end up creating multiple queues.

This is still definitely broken/not fully correct, but it at least
gets things working for those.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24258>

src/asahi/lib/decode.c

@@ -818,7 +818,8 @@ agxdecode_track_free(struct agx_bo *bo)
 
    for (unsigned i = 0; i < mmap_count; ++i) {
       if (mmap_array[i].handle == bo->handle &&
-          mmap_array[i].type == bo->type) {
+          (mmap_array[i].type == AGX_ALLOC_REGULAR) ==
+             (bo->type == AGX_ALLOC_REGULAR)) {
          assert(!found && "mapped multiple times!");
          found = true;
 

src/asahi/lib/wrap.c

@@ -228,6 +228,18 @@ wrap_Method(mach_port_t connection, uint32_t selector, const uint64_t *input,
       break;
    }
 
+   case AGX_SELECTOR_FREE_SHMEM: {
+      assert(inputCnt == 1);
+      assert(inputStruct == NULL);
+      assert(output == NULL);
+      assert(outputStruct == NULL);
+
+      agxdecode_track_free(
+         &(struct agx_bo){.type = AGX_ALLOC_CMDBUF, .handle = input[0]});
+
+      break;
+   }
+
    default:
       /* Dump the outputs */
       if (outputCnt) {