--- libmalloc/libmalloc-792.80.2/tests/xzone_metapool_tests.c
+++ libmalloc/libmalloc-657.80.3/tests/xzone_metapool_tests.c
@@ -1,15 +1,73 @@
 #include <darwintest.h>
 #include <sys/mman.h>
 
-#define TESTING_METAPOOL 1
-#include "xzone_testing.h"
-
-T_GLOBAL_META(T_META_RUN_CONCURRENTLY(TRUE), T_META_TAG_VM_PREFERRED,
-		T_META_TAG_NO_ALLOCATOR_OVERRIDE);
+#include "../src/internal.h" // MALLOC_TARGET_EXCLAVES
 
 #if CONFIG_XZONE_MALLOC
 
-#include "../src/xzone_malloc/xzone_metapool.c"
+#if MALLOC_TARGET_EXCLAVES
+#include <vas/vas.h>
+#else
+#include <mach/mach_init.h>
+#include <mach/vm_map.h>
+#endif // MALLOC_TARGET_EXCLAVES
+
+static void *
+test_mvm_allocate_plat(uintptr_t addr, size_t size, int flags,
+		uint32_t debug_flags, int vm_page_label, plat_map_t *map_out)
+{
+#if MALLOC_TARGET_EXCLAVES
+	const _liblibc_map_type_t type = LIBLIBC_MAP_TYPE_PRIVATE |
+			((flags & VM_FLAGS_ANYWHERE) ? 0 : LIBLIBC_MAP_TYPE_FIXED) |
+			((debug_flags & MALLOC_NO_POPULATE) ? LIBLIBC_MAP_TYPE_NOCOMMIT : 0);
+	return mmap_plat(map_out, addr, size,
+			LIBLIBC_MAP_PERM_READ | LIBLIBC_MAP_PERM_WRITE, type, 0,
+			(unsigned)vm_page_label);
+#else
+	vm_address_t vm_addr;
+	kern_return_t kr;
+
+	kr = vm_allocate(mach_task_self(), &vm_addr, size,
+			VM_FLAGS_ANYWHERE | VM_MAKE_TAG(vm_page_label));
+	return kr == KERN_SUCCESS ? (void *)vm_addr : NULL;
+#endif // MALLOC_TARGET_EXCLAVES
+}
+#define mvm_allocate_plat(addr, size, align, flags, debug_flags, vm_page_label, plat) \
+	test_mvm_allocate_plat(addr, size, flags, debug_flags, vm_page_label, plat)
+
+
+static int
+test_mvm_madvise(void *addr, size_t size, int advice, plat_map_t *map)
+{
+#if MALLOC_TARGET_EXCLAVES
+	return !madvise_plat(map, addr, size, LIBLIBC_MAP_HINT_UNUSED);
+#else
+	kern_return_t kr = madvise(addr, size, advice);
+	return kr != - 1;
+#endif // MALLOC_TARGET_EXCLAVES
+}
+#define mvm_madvise_plat(addr, size, advice, debug_flags, plat) \
+	test_mvm_madvise(addr, size, advice, plat)
+
+static void test_malloc_lock_lock(_malloc_lock_s *lock) {
+#if MALLOC_HAS_OS_LOCK
+	os_unfair_lock_lock(lock);
+#else
+	T_QUIET; T_ASSERT_EQ(pthread_mutex_lock(lock), 0, "Lock lock");
+#endif // MALLOC_HAS_OS_LOCK
+}
+#define _malloc_lock_lock(lock) test_malloc_lock_lock(lock);
+
+static void test_malloc_lock_unlock(_malloc_lock_s *lock) {
+#if MALLOC_HAS_OS_LOCK
+	os_unfair_lock_unlock(lock);
+#else
+	T_QUIET; T_ASSERT_EQ(pthread_mutex_unlock(lock), 0, "Unlock lock");
+#endif // MALLOC_HAS_OS_LOCK
+}
+#define _malloc_lock_unlock(lock) test_malloc_lock_unlock(lock);
+
+#include "../src/xzone/xzone_metapool.c"
 
 #if !MALLOC_TARGET_EXCLAVES
 bool check_page_is_dirty(void *page) {
@@ -38,10 +96,10 @@
 	const size_t data_slab_size = KiB(512);
 	const size_t num_data_blocks = data_slab_size / data_size;
 
-	xzm_metapool_init(&metadata_pool, 1, VM_MEMORY_MALLOC, metadata_slab_size,
-			metadata_size, metadata_size, NULL);
-	xzm_metapool_init(&data_pool, 1, VM_MEMORY_MALLOC, data_slab_size,
-			data_size, data_size, &metadata_pool);
+	xzm_metapool_init(&metadata_pool, 1, metadata_slab_size, metadata_size,
+			metadata_size, NULL);
+	xzm_metapool_init(&data_pool, 1, data_slab_size, data_size,
+			data_size, &metadata_pool);
 
 	// Allocate a full slab of data blocks, ensure that they all came from the
 	// same slab, dirty all of their pages, and then free them all. After