--- /dev/null
+/*
+ * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#ifndef _KASAN_H_
+#define _KASAN_H_
+
+#if KERNEL_PRIVATE
+
+#if KASAN && !__has_feature(address_sanitizer)
+# error "KASAN selected, but not enabled in compiler"
+#endif
+
+#if !KASAN && __has_feature(address_sanitizer)
+# error "ASAN enabled in compiler, but kernel is not configured for KASAN"
+#endif
+
+#define KASAN_GLOBAL_SEGNAME "__DATA"
+#define KASAN_GLOBAL_SECTNAME "__asan_globals"
+
+typedef uintptr_t uptr;
+
+#if KASAN
+
+#define KASAN_KALLOC 1
+#define KASAN_ZALLOC 1
+#define KASAN_DYNAMIC_BLACKLIST 1
+
+#define KASAN_GUARD_SIZE (16)
+#define KASAN_GUARD_PAD (KASAN_GUARD_SIZE * 2)
+
+#define KASAN_HEAP_ZALLOC 0
+#define KASAN_HEAP_KALLOC 1
+#define KASAN_HEAP_FAKESTACK 2
+#define KASAN_HEAP_TYPES 3
+
+/* shadow map byte values */
+#define ASAN_VALID 0x00
+#define ASAN_PARTIAL1 0x01
+#define ASAN_PARTIAL2 0x02
+#define ASAN_PARTIAL3 0x03
+#define ASAN_PARTIAL4 0x04
+#define ASAN_PARTIAL5 0x05
+#define ASAN_PARTIAL6 0x06
+#define ASAN_PARTIAL7 0x07
+#define ASAN_ARRAY_COOKIE 0xac
+#define ASAN_STACK_RZ 0xf0
+#define ASAN_STACK_LEFT_RZ 0xf1
+#define ASAN_STACK_MID_RZ 0xf2
+#define ASAN_STACK_RIGHT_RZ 0xf3
+#define ASAN_STACK_FREED 0xf5
+#define ASAN_GLOBAL_RZ 0xf9
+#define ASAN_HEAP_RZ 0xe9
+#define ASAN_HEAP_LEFT_RZ 0xfa
+#define ASAN_HEAP_RIGHT_RZ 0xfb
+#define ASAN_HEAP_FREED 0xfd
+
+/*
+ * KASAN internal interface
+ */
+
+__BEGIN_DECLS
+void kasan_map_shadow(vm_offset_t address, vm_size_t size, bool is_zero);
+void kasan_disable(void);
+void kasan_reserve_memory(void *);
+void kasan_late_init(void);
+void kasan_init(void);
+void kasan_notify_stolen(vm_offset_t top);
+
+void kasan_load_kext(vm_offset_t base, vm_size_t size, const void *bundleid);
+void kasan_unload_kext(vm_offset_t base, vm_size_t size);
+
+void kasan_poison_range(vm_offset_t base, vm_size_t sz, uint8_t flags);
+void kasan_notify_address(vm_offset_t address, vm_size_t size);
+void kasan_notify_address_nopoison(vm_offset_t address, vm_size_t size);
+void kasan_unpoison_stack(vm_offset_t stack, vm_size_t size);
+void kasan_unpoison_fakestack(thread_t thread);
+
+struct kasan_test;
+void __kasan_runtests(struct kasan_test *, int numtests);
+
+#if XNU_KERNEL_PRIVATE
+extern long shadow_pages_total;
+
+#if __arm64__
+void kasan_notify_address_zero(vm_offset_t, vm_size_t);
+#elif __x86_64__
+extern void kasan_map_low_fixed_regions(void);
+extern unsigned shadow_stolen_idx;
+extern vm_offset_t shadow_pnext, shadow_ptop;
+#endif
+#endif
+/*
+ * Allocator hooks
+ */
+
+vm_size_t kasan_alloc_resize(vm_size_t size);
+vm_size_t kasan_user_size(vm_offset_t addr);
+
+vm_address_t kasan_alloc(vm_offset_t addr, vm_size_t size, vm_size_t req, vm_size_t leftrz);
+vm_address_t kasan_dealloc(vm_offset_t addr, vm_size_t *size);
+
+void kasan_check_free(vm_offset_t addr, vm_size_t size, unsigned type);
+void kasan_free(void **addr, vm_size_t *size, int type, zone_t *zone, vm_size_t user_size, bool doquarantine);
+
+__END_DECLS
+
+/* thread interface */
+struct kasan_thread_data {
+ int in_fakestack;
+ LIST_HEAD(fakestack_header_list, fakestack_header) fakestack_head;
+};
+struct kasan_thread_data *kasan_get_thread_data(thread_t);
+void kasan_init_thread(struct kasan_thread_data *);
+
+#endif /* KASAN */
+
+#if __has_feature(address_sanitizer)
+# define NOKASAN __attribute__ ((no_sanitize_address))
+#else
+# define NOKASAN
+#endif
+
+/*
+ * Delimit areas of code that may do kasan-unsafe operations
+ */
+__BEGIN_DECLS
+#if KASAN
+void kasan_unsafe_start(void);
+void kasan_unsafe_end(void);
+#else
+static inline void kasan_unsafe_start(void) {}
+static inline void kasan_unsafe_end(void) {}
+#endif
+__END_DECLS
+
+/*
+ * ASAN callbacks - inserted by the compiler
+ */
+
+extern int __asan_option_detect_stack_use_after_return;
+extern const uintptr_t __asan_shadow_memory_dynamic_address;
+
+__BEGIN_DECLS
+void __asan_report_load1(uptr p);
+void __asan_report_load2(uptr p);
+void __asan_report_load4(uptr p);
+void __asan_report_load8(uptr p);
+void __asan_report_load16(uptr p);
+void __asan_report_store1(uptr p);
+void __asan_report_store2(uptr p);
+void __asan_report_store4(uptr p);
+void __asan_report_store8(uptr p);
+void __asan_report_store16(uptr p);
+void __asan_report_load_n(uptr p, unsigned long size);
+void __asan_report_store_n(uptr p, unsigned long size);
+void __asan_handle_no_return(void);
+uptr __asan_stack_malloc_0(size_t);
+uptr __asan_stack_malloc_1(size_t);
+uptr __asan_stack_malloc_2(size_t);
+uptr __asan_stack_malloc_3(size_t);
+uptr __asan_stack_malloc_4(size_t);
+uptr __asan_stack_malloc_5(size_t);
+uptr __asan_stack_malloc_6(size_t);
+uptr __asan_stack_malloc_7(size_t);
+uptr __asan_stack_malloc_8(size_t);
+uptr __asan_stack_malloc_9(size_t);
+uptr __asan_stack_malloc_10(size_t);
+void __asan_stack_free_0(uptr, size_t);
+void __asan_stack_free_1(uptr, size_t);
+void __asan_stack_free_2(uptr, size_t);
+void __asan_stack_free_3(uptr, size_t);
+void __asan_stack_free_4(uptr, size_t);
+void __asan_stack_free_5(uptr, size_t);
+void __asan_stack_free_6(uptr, size_t);
+void __asan_stack_free_7(uptr, size_t);
+void __asan_stack_free_8(uptr, size_t);
+void __asan_stack_free_9(uptr, size_t);
+void __asan_stack_free_10(uptr, size_t);
+void __asan_poison_cxx_array_cookie(uptr);
+uptr __asan_load_cxx_array_cookie(uptr *);
+void __asan_poison_stack_memory(uptr addr, size_t size);
+void __asan_unpoison_stack_memory(uptr addr, size_t size);
+void __asan_alloca_poison(uptr addr, uptr size);
+void __asan_allocas_unpoison(uptr top, uptr bottom);
+void __asan_load1(uptr);
+void __asan_load2(uptr);
+void __asan_load4(uptr);
+void __asan_load8(uptr);
+void __asan_load16(uptr);
+void __asan_loadN(uptr, size_t);
+void __asan_store1(uptr);
+void __asan_store2(uptr);
+void __asan_store4(uptr);
+void __asan_store8(uptr);
+void __asan_store16(uptr);
+void __asan_storeN(uptr, size_t);
+void __sanitizer_ptr_sub(uptr a, uptr b);
+void __sanitizer_ptr_cmp(uptr a, uptr b);
+void __sanitizer_annotate_contiguous_container(const void *beg, const void *end, const void *old_mid, const void *new_mid);
+
+void __asan_set_shadow_00(uptr, size_t);
+void __asan_set_shadow_f1(uptr, size_t);
+void __asan_set_shadow_f2(uptr, size_t);
+void __asan_set_shadow_f3(uptr, size_t);
+void __asan_set_shadow_f5(uptr, size_t);
+void __asan_set_shadow_f8(uptr, size_t);
+
+void __asan_init_v5(void);
+void __asan_before_dynamic_init(uptr);
+void __asan_after_dynamic_init(void);
+void __asan_unregister_globals(uptr a, uptr b);
+void __asan_register_globals(uptr a, uptr b);
+void __asan_init(void);
+void __asan_unregister_image_globals(uptr);
+void __asan_register_image_globals(uptr);
+__END_DECLS
+
+#endif /* KERNEL_PRIVATE */
+#endif /* _KASAN_H_ */
projects / apple / xnu.git / blobdiff