1 /* $NetBSD: subr_csan.c,v 1.5 2019/11/15 08:11:37 maxv Exp $ */
4 * Copyright (c) 2019 The NetBSD Foundation, Inc.
6 * Copyright (c) 2019 Andrew Turner
8 * This code is derived from software contributed to The NetBSD Foundation
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
37 #include <sys/param.h>
38 #include <sys/kernel.h>
45 #include <sys/systm.h>
48 #include <ddb/db_sym.h>
70 static csan_cpu_t kcsan_cpus[MAXCPU];
71 static bool kcsan_enabled __read_mostly;
73 #define __RET_ADDR (uintptr_t)__builtin_return_address(0)
75 #define KCSAN_NACCESSES 1024
76 #define KCSAN_DELAY 10 /* 10 microseconds */
78 /* -------------------------------------------------------------------------- */
81 #include <machine/csan.h>
83 /* -------------------------------------------------------------------------- */
86 kcsan_enable(void *dummy __unused)
89 printf("Enabling KCSCAN, expect reduced performance.\n");
92 SYSINIT(kcsan_enable, SI_SUB_SMP, SI_ORDER_SECOND, kcsan_enable, NULL);
95 kcsan_cpu_init(u_int cpu)
97 kcsan_cpus[cpu].inited = true;
100 /* -------------------------------------------------------------------------- */
103 kcsan_report(csan_cell_t *new, u_int newcpu, csan_cell_t *old, u_int oldcpu)
105 const char *newsym, *oldsym;
110 sym = db_search_symbol((vm_offset_t)new->pc, DB_STGY_PROC, &offset);
111 db_symbol_values(sym, &newsym, NULL);
113 sym = db_search_symbol((vm_offset_t)old->pc, DB_STGY_PROC, &offset);
114 db_symbol_values(sym, &oldsym, NULL);
119 REPORT("CSan: Racy Access "
120 "[Cpu%u %s%s Addr=%p Size=%u PC=%p<%s>] "
121 "[Cpu%u %s%s Addr=%p Size=%u PC=%p<%s>]\n",
123 (new->atomic ? "Atomic " : ""), (new->write ? "Write" : "Read"),
124 (void *)new->addr, new->size, (void *)new->pc, newsym,
126 (old->atomic ? "Atomic " : ""), (old->write ? "Write" : "Read"),
127 (void *)old->addr, old->size, (void *)old->pc, oldsym);
132 kcsan_access_is_atomic(csan_cell_t *new, csan_cell_t *old)
134 if (new->write && !new->atomic)
136 if (old->write && !old->atomic)
142 kcsan_access(uintptr_t addr, size_t size, bool write, bool atomic, uintptr_t pc)
144 csan_cell_t old, new;
149 if (__predict_false(!kcsan_enabled))
151 if (__predict_false(kcsan_md_unsupported((vm_offset_t)addr)))
153 if (KERNEL_PANICKED())
163 __builtin_memcpy(&old, &kcsan_cpus[i].cell, sizeof(old));
165 if (old.addr + old.size <= new.addr)
167 if (new.addr + new.size <= old.addr)
169 if (__predict_true(!old.write && !new.write))
171 if (__predict_true(kcsan_access_is_atomic(&new, &old)))
174 kcsan_report(&new, PCPU_GET(cpuid), &old, i);
178 if (__predict_false(!kcsan_md_is_avail()))
181 kcsan_md_disable_intrs(&intr);
183 cpu = &kcsan_cpus[PCPU_GET(cpuid)];
184 if (__predict_false(!cpu->inited))
186 cpu->cnt = (cpu->cnt + 1) % KCSAN_NACCESSES;
187 if (__predict_true(cpu->cnt != 0))
190 __builtin_memcpy(&cpu->cell, &new, sizeof(new));
191 kcsan_md_delay(KCSAN_DELAY);
192 __builtin_memset(&cpu->cell, 0, sizeof(new));
195 kcsan_md_enable_intrs(&intr);
198 #define CSAN_READ(size) \
199 void __tsan_read##size(uintptr_t); \
200 void __tsan_read##size(uintptr_t addr) \
202 kcsan_access(addr, size, false, false, __RET_ADDR); \
204 void __tsan_unaligned_read##size(uintptr_t); \
205 void __tsan_unaligned_read##size(uintptr_t addr) \
207 kcsan_access(addr, size, false, false, __RET_ADDR); \
216 #define CSAN_WRITE(size) \
217 void __tsan_write##size(uintptr_t); \
218 void __tsan_write##size(uintptr_t addr) \
220 kcsan_access(addr, size, true, false, __RET_ADDR); \
222 void __tsan_unaligned_write##size(uintptr_t); \
223 void __tsan_unaligned_write##size(uintptr_t addr) \
225 kcsan_access(addr, size, true, false, __RET_ADDR); \
234 void __tsan_read_range(uintptr_t, size_t);
235 void __tsan_write_range(uintptr_t, size_t);
238 __tsan_read_range(uintptr_t addr, size_t size)
240 kcsan_access(addr, size, false, false, __RET_ADDR);
244 __tsan_write_range(uintptr_t addr, size_t size)
246 kcsan_access(addr, size, true, false, __RET_ADDR);
249 void __tsan_init(void);
250 void __tsan_func_entry(void *);
251 void __tsan_func_exit(void);
259 __tsan_func_entry(void *call_pc)
264 __tsan_func_exit(void)
268 /* -------------------------------------------------------------------------- */
271 kcsan_memcpy(void *dst, const void *src, size_t len)
273 kcsan_access((uintptr_t)src, len, false, false, __RET_ADDR);
274 kcsan_access((uintptr_t)dst, len, true, false, __RET_ADDR);
275 return __builtin_memcpy(dst, src, len);
279 kcsan_memcmp(const void *b1, const void *b2, size_t len)
281 kcsan_access((uintptr_t)b1, len, false, false, __RET_ADDR);
282 kcsan_access((uintptr_t)b2, len, false, false, __RET_ADDR);
283 return __builtin_memcmp(b1, b2, len);
287 kcsan_memset(void *b, int c, size_t len)
289 kcsan_access((uintptr_t)b, len, true, false, __RET_ADDR);
290 return __builtin_memset(b, c, len);
294 kcsan_memmove(void *dst, const void *src, size_t len)
296 kcsan_access((uintptr_t)src, len, false, false, __RET_ADDR);
297 kcsan_access((uintptr_t)dst, len, true, false, __RET_ADDR);
298 return __builtin_memmove(dst, src, len);
301 __strong_reference(kcsan_memcpy, __tsan_memcpy);
302 __strong_reference(kcsan_memset, __tsan_memset);
303 __strong_reference(kcsan_memmove, __tsan_memmove);
306 kcsan_strcpy(char *dst, const char *src)
311 kcsan_access((uintptr_t)src, 1, false, false, __RET_ADDR);
312 kcsan_access((uintptr_t)dst, 1, true, false, __RET_ADDR);
323 kcsan_strcmp(const char *s1, const char *s2)
326 kcsan_access((uintptr_t)s1, 1, false, false, __RET_ADDR);
327 kcsan_access((uintptr_t)s2, 1, false, false, __RET_ADDR);
335 return (*(const unsigned char *)s1 - *(const unsigned char *)s2);
339 kcsan_strlen(const char *str)
345 kcsan_access((uintptr_t)s, 1, false, false, __RET_ADDR);
355 kcsan_copyin(const void *uaddr, void *kaddr, size_t len)
357 kcsan_access((uintptr_t)kaddr, len, true, false, __RET_ADDR);
358 return copyin(uaddr, kaddr, len);
362 kcsan_copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done)
364 kcsan_access((uintptr_t)kaddr, len, true, false, __RET_ADDR);
365 return copyinstr(uaddr, kaddr, len, done);
369 kcsan_copyout(const void *kaddr, void *uaddr, size_t len)
371 kcsan_access((uintptr_t)kaddr, len, false, false, __RET_ADDR);
372 return copyout(kaddr, uaddr, len);
375 /* -------------------------------------------------------------------------- */
377 #include <machine/atomic.h>
378 #include <sys/atomic_san.h>
380 #define _CSAN_ATOMIC_FUNC_ADD(name, type) \
381 void kcsan_atomic_add_##name(volatile type *ptr, type val) \
383 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
385 atomic_add_##name(ptr, val); \
388 #define CSAN_ATOMIC_FUNC_ADD(name, type) \
389 _CSAN_ATOMIC_FUNC_ADD(name, type) \
390 _CSAN_ATOMIC_FUNC_ADD(acq_##name, type) \
391 _CSAN_ATOMIC_FUNC_ADD(rel_##name, type)
393 #define _CSAN_ATOMIC_FUNC_CLEAR(name, type) \
394 void kcsan_atomic_clear_##name(volatile type *ptr, type val) \
396 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
398 atomic_clear_##name(ptr, val); \
401 #define CSAN_ATOMIC_FUNC_CLEAR(name, type) \
402 _CSAN_ATOMIC_FUNC_CLEAR(name, type) \
403 _CSAN_ATOMIC_FUNC_CLEAR(acq_##name, type) \
404 _CSAN_ATOMIC_FUNC_CLEAR(rel_##name, type)
406 #define _CSAN_ATOMIC_FUNC_CMPSET(name, type) \
407 int kcsan_atomic_cmpset_##name(volatile type *ptr, type val1, \
410 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
412 return (atomic_cmpset_##name(ptr, val1, val2)); \
415 #define CSAN_ATOMIC_FUNC_CMPSET(name, type) \
416 _CSAN_ATOMIC_FUNC_CMPSET(name, type) \
417 _CSAN_ATOMIC_FUNC_CMPSET(acq_##name, type) \
418 _CSAN_ATOMIC_FUNC_CMPSET(rel_##name, type)
420 #define _CSAN_ATOMIC_FUNC_FCMPSET(name, type) \
421 int kcsan_atomic_fcmpset_##name(volatile type *ptr, type *val1, \
424 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
426 return (atomic_fcmpset_##name(ptr, val1, val2)); \
429 #define CSAN_ATOMIC_FUNC_FCMPSET(name, type) \
430 _CSAN_ATOMIC_FUNC_FCMPSET(name, type) \
431 _CSAN_ATOMIC_FUNC_FCMPSET(acq_##name, type) \
432 _CSAN_ATOMIC_FUNC_FCMPSET(rel_##name, type)
434 #define CSAN_ATOMIC_FUNC_FETCHADD(name, type) \
435 type kcsan_atomic_fetchadd_##name(volatile type *ptr, type val) \
437 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
439 return (atomic_fetchadd_##name(ptr, val)); \
442 #define _CSAN_ATOMIC_FUNC_LOAD(name, type) \
443 type kcsan_atomic_load_##name(volatile type *ptr) \
445 kcsan_access((uintptr_t)ptr, sizeof(type), false, true, \
447 return (atomic_load_##name(ptr)); \
450 #define CSAN_ATOMIC_FUNC_LOAD(name, type) \
451 _CSAN_ATOMIC_FUNC_LOAD(name, type) \
452 _CSAN_ATOMIC_FUNC_LOAD(acq_##name, type) \
454 #define CSAN_ATOMIC_FUNC_READANDCLEAR(name, type) \
455 type kcsan_atomic_readandclear_##name(volatile type *ptr) \
457 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
459 return (atomic_readandclear_##name(ptr)); \
462 #define _CSAN_ATOMIC_FUNC_SET(name, type) \
463 void kcsan_atomic_set_##name(volatile type *ptr, type val) \
465 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
467 atomic_set_##name(ptr, val); \
470 #define CSAN_ATOMIC_FUNC_SET(name, type) \
471 _CSAN_ATOMIC_FUNC_SET(name, type) \
472 _CSAN_ATOMIC_FUNC_SET(acq_##name, type) \
473 _CSAN_ATOMIC_FUNC_SET(rel_##name, type)
475 #define _CSAN_ATOMIC_FUNC_SUBTRACT(name, type) \
476 void kcsan_atomic_subtract_##name(volatile type *ptr, type val) \
478 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
480 atomic_subtract_##name(ptr, val); \
483 #define CSAN_ATOMIC_FUNC_SUBTRACT(name, type) \
484 _CSAN_ATOMIC_FUNC_SUBTRACT(name, type) \
485 _CSAN_ATOMIC_FUNC_SUBTRACT(acq_##name, type) \
486 _CSAN_ATOMIC_FUNC_SUBTRACT(rel_##name, type)
488 #define _CSAN_ATOMIC_FUNC_STORE(name, type) \
489 void kcsan_atomic_store_##name(volatile type *ptr, type val) \
491 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
493 atomic_store_##name(ptr, val); \
496 #define CSAN_ATOMIC_FUNC_STORE(name, type) \
497 _CSAN_ATOMIC_FUNC_STORE(name, type) \
498 _CSAN_ATOMIC_FUNC_STORE(rel_##name, type)
500 #define CSAN_ATOMIC_FUNC_SWAP(name, type) \
501 type kcsan_atomic_swap_##name(volatile type *ptr, type val) \
503 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
505 return(atomic_swap_##name(ptr, val)); \
508 #define CSAN_ATOMIC_FUNC_TESTANDCLEAR(name, type) \
509 int kcsan_atomic_testandclear_##name(volatile type *ptr, u_int val) \
511 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
513 return(atomic_testandclear_##name(ptr, val)); \
516 #define CSAN_ATOMIC_FUNC_TESTANDSET(name, type) \
517 int kcsan_atomic_testandset_##name(volatile type *ptr, u_int val) \
519 kcsan_access((uintptr_t)ptr, sizeof(type), true, true, \
521 return (atomic_testandset_##name(ptr, val)); \
524 _CSAN_ATOMIC_FUNC_LOAD(bool, bool)
525 _CSAN_ATOMIC_FUNC_STORE(bool, bool)
527 CSAN_ATOMIC_FUNC_ADD(8, uint8_t)
528 CSAN_ATOMIC_FUNC_CLEAR(8, uint8_t)
529 CSAN_ATOMIC_FUNC_CMPSET(8, uint8_t)
530 CSAN_ATOMIC_FUNC_FCMPSET(8, uint8_t)
531 CSAN_ATOMIC_FUNC_LOAD(8, uint8_t)
532 CSAN_ATOMIC_FUNC_SET(8, uint8_t)
533 CSAN_ATOMIC_FUNC_SUBTRACT(8, uint8_t)
534 _CSAN_ATOMIC_FUNC_STORE(8, uint8_t)
536 CSAN_ATOMIC_FUNC_FETCHADD(8, uint8_t)
537 CSAN_ATOMIC_FUNC_READANDCLEAR(8, uint8_t)
538 CSAN_ATOMIC_FUNC_SWAP(8, uint8_t)
539 CSAN_ATOMIC_FUNC_TESTANDCLEAR(8, uint8_t)
540 CSAN_ATOMIC_FUNC_TESTANDSET(8, uint8_t)
543 CSAN_ATOMIC_FUNC_ADD(16, uint16_t)
544 CSAN_ATOMIC_FUNC_CLEAR(16, uint16_t)
545 CSAN_ATOMIC_FUNC_CMPSET(16, uint16_t)
546 CSAN_ATOMIC_FUNC_FCMPSET(16, uint16_t)
547 CSAN_ATOMIC_FUNC_LOAD(16, uint16_t)
548 CSAN_ATOMIC_FUNC_SET(16, uint16_t)
549 CSAN_ATOMIC_FUNC_SUBTRACT(16, uint16_t)
550 _CSAN_ATOMIC_FUNC_STORE(16, uint16_t)
552 CSAN_ATOMIC_FUNC_FETCHADD(16, uint16_t)
553 CSAN_ATOMIC_FUNC_READANDCLEAR(16, uint16_t)
554 CSAN_ATOMIC_FUNC_SWAP(16, uint16_t)
555 CSAN_ATOMIC_FUNC_TESTANDCLEAR(16, uint16_t)
556 CSAN_ATOMIC_FUNC_TESTANDSET(16, uint16_t)
559 CSAN_ATOMIC_FUNC_ADD(32, uint32_t)
560 CSAN_ATOMIC_FUNC_CLEAR(32, uint32_t)
561 CSAN_ATOMIC_FUNC_CMPSET(32, uint32_t)
562 CSAN_ATOMIC_FUNC_FCMPSET(32, uint32_t)
563 CSAN_ATOMIC_FUNC_FETCHADD(32, uint32_t)
564 CSAN_ATOMIC_FUNC_LOAD(32, uint32_t)
565 CSAN_ATOMIC_FUNC_READANDCLEAR(32, uint32_t)
566 CSAN_ATOMIC_FUNC_SET(32, uint32_t)
567 CSAN_ATOMIC_FUNC_SUBTRACT(32, uint32_t)
568 CSAN_ATOMIC_FUNC_STORE(32, uint32_t)
569 CSAN_ATOMIC_FUNC_SWAP(32, uint32_t)
570 CSAN_ATOMIC_FUNC_TESTANDCLEAR(32, uint32_t)
571 CSAN_ATOMIC_FUNC_TESTANDSET(32, uint32_t)
573 CSAN_ATOMIC_FUNC_ADD(64, uint64_t)
574 CSAN_ATOMIC_FUNC_CLEAR(64, uint64_t)
575 CSAN_ATOMIC_FUNC_CMPSET(64, uint64_t)
576 CSAN_ATOMIC_FUNC_FCMPSET(64, uint64_t)
577 CSAN_ATOMIC_FUNC_FETCHADD(64, uint64_t)
578 CSAN_ATOMIC_FUNC_LOAD(64, uint64_t)
579 CSAN_ATOMIC_FUNC_READANDCLEAR(64, uint64_t)
580 CSAN_ATOMIC_FUNC_SET(64, uint64_t)
581 CSAN_ATOMIC_FUNC_SUBTRACT(64, uint64_t)
582 CSAN_ATOMIC_FUNC_STORE(64, uint64_t)
583 CSAN_ATOMIC_FUNC_SWAP(64, uint64_t)
584 CSAN_ATOMIC_FUNC_TESTANDCLEAR(64, uint64_t)
585 CSAN_ATOMIC_FUNC_TESTANDSET(64, uint64_t)
587 CSAN_ATOMIC_FUNC_ADD(char, uint8_t)
588 CSAN_ATOMIC_FUNC_CLEAR(char, uint8_t)
589 CSAN_ATOMIC_FUNC_CMPSET(char, uint8_t)
590 CSAN_ATOMIC_FUNC_FCMPSET(char, uint8_t)
591 CSAN_ATOMIC_FUNC_LOAD(char, uint8_t)
592 CSAN_ATOMIC_FUNC_SET(char, uint8_t)
593 CSAN_ATOMIC_FUNC_SUBTRACT(char, uint8_t)
594 _CSAN_ATOMIC_FUNC_STORE(char, uint8_t)
596 CSAN_ATOMIC_FUNC_FETCHADD(char, uint8_t)
597 CSAN_ATOMIC_FUNC_READANDCLEAR(char, uint8_t)
598 CSAN_ATOMIC_FUNC_SWAP(char, uint8_t)
599 CSAN_ATOMIC_FUNC_TESTANDCLEAR(char, uint8_t)
600 CSAN_ATOMIC_FUNC_TESTANDSET(char, uint8_t)
603 CSAN_ATOMIC_FUNC_ADD(short, uint16_t)
604 CSAN_ATOMIC_FUNC_CLEAR(short, uint16_t)
605 CSAN_ATOMIC_FUNC_CMPSET(short, uint16_t)
606 CSAN_ATOMIC_FUNC_FCMPSET(short, uint16_t)
607 CSAN_ATOMIC_FUNC_LOAD(short, uint16_t)
608 CSAN_ATOMIC_FUNC_SET(short, uint16_t)
609 CSAN_ATOMIC_FUNC_SUBTRACT(short, uint16_t)
610 _CSAN_ATOMIC_FUNC_STORE(short, uint16_t)
612 CSAN_ATOMIC_FUNC_FETCHADD(short, uint16_t)
613 CSAN_ATOMIC_FUNC_READANDCLEAR(short, uint16_t)
614 CSAN_ATOMIC_FUNC_SWAP(short, uint16_t)
615 CSAN_ATOMIC_FUNC_TESTANDCLEAR(short, uint16_t)
616 CSAN_ATOMIC_FUNC_TESTANDSET(short, uint16_t)
619 CSAN_ATOMIC_FUNC_ADD(int, u_int)
620 CSAN_ATOMIC_FUNC_CLEAR(int, u_int)
621 CSAN_ATOMIC_FUNC_CMPSET(int, u_int)
622 CSAN_ATOMIC_FUNC_FCMPSET(int, u_int)
623 CSAN_ATOMIC_FUNC_FETCHADD(int, u_int)
624 CSAN_ATOMIC_FUNC_LOAD(int, u_int)
625 CSAN_ATOMIC_FUNC_READANDCLEAR(int, u_int)
626 CSAN_ATOMIC_FUNC_SET(int, u_int)
627 CSAN_ATOMIC_FUNC_SUBTRACT(int, u_int)
628 CSAN_ATOMIC_FUNC_STORE(int, u_int)
629 CSAN_ATOMIC_FUNC_SWAP(int, u_int)
630 CSAN_ATOMIC_FUNC_TESTANDCLEAR(int, u_int)
631 CSAN_ATOMIC_FUNC_TESTANDSET(int, u_int)
633 CSAN_ATOMIC_FUNC_ADD(long, u_long)
634 CSAN_ATOMIC_FUNC_CLEAR(long, u_long)
635 CSAN_ATOMIC_FUNC_CMPSET(long, u_long)
636 CSAN_ATOMIC_FUNC_FCMPSET(long, u_long)
637 CSAN_ATOMIC_FUNC_FETCHADD(long, u_long)
638 CSAN_ATOMIC_FUNC_LOAD(long, u_long)
639 CSAN_ATOMIC_FUNC_READANDCLEAR(long, u_long)
640 CSAN_ATOMIC_FUNC_SET(long, u_long)
641 CSAN_ATOMIC_FUNC_SUBTRACT(long, u_long)
642 CSAN_ATOMIC_FUNC_STORE(long, u_long)
643 CSAN_ATOMIC_FUNC_SWAP(long, u_long)
644 CSAN_ATOMIC_FUNC_TESTANDCLEAR(long, u_long)
645 CSAN_ATOMIC_FUNC_TESTANDSET(long, u_long)
646 CSAN_ATOMIC_FUNC_TESTANDSET(acq_long, u_long)
648 CSAN_ATOMIC_FUNC_ADD(ptr, uintptr_t)
649 CSAN_ATOMIC_FUNC_CLEAR(ptr, uintptr_t)
650 CSAN_ATOMIC_FUNC_CMPSET(ptr, uintptr_t)
651 CSAN_ATOMIC_FUNC_FCMPSET(ptr, uintptr_t)
652 #if !defined(__amd64__)
653 CSAN_ATOMIC_FUNC_FETCHADD(ptr, uintptr_t)
655 CSAN_ATOMIC_FUNC_LOAD(ptr, uintptr_t)
656 CSAN_ATOMIC_FUNC_READANDCLEAR(ptr, uintptr_t)
657 CSAN_ATOMIC_FUNC_SET(ptr, uintptr_t)
658 CSAN_ATOMIC_FUNC_SUBTRACT(ptr, uintptr_t)
659 CSAN_ATOMIC_FUNC_STORE(ptr, uintptr_t)
660 CSAN_ATOMIC_FUNC_SWAP(ptr, uintptr_t)
662 CSAN_ATOMIC_FUNC_TESTANDCLEAR(ptr, uintptr_t)
663 CSAN_ATOMIC_FUNC_TESTANDSET(ptr, uintptr_t)
666 #define CSAN_ATOMIC_FUNC_THREAD_FENCE(name) \
667 void kcsan_atomic_thread_fence_##name(void) \
669 atomic_thread_fence_##name(); \
672 CSAN_ATOMIC_FUNC_THREAD_FENCE(acq)
673 CSAN_ATOMIC_FUNC_THREAD_FENCE(acq_rel)
674 CSAN_ATOMIC_FUNC_THREAD_FENCE(rel)
675 CSAN_ATOMIC_FUNC_THREAD_FENCE(seq_cst)
678 kcsan_atomic_interrupt_fence(void)
680 atomic_interrupt_fence();
683 /* -------------------------------------------------------------------------- */
686 #include <machine/bus.h>
687 #include <sys/bus_san.h>
690 kcsan_bus_space_map(bus_space_tag_t tag, bus_addr_t hnd, bus_size_t size,
691 int flags, bus_space_handle_t *handlep)
694 return (bus_space_map(tag, hnd, size, flags, handlep));
698 kcsan_bus_space_unmap(bus_space_tag_t tag, bus_space_handle_t hnd,
702 bus_space_unmap(tag, hnd, size);
706 kcsan_bus_space_subregion(bus_space_tag_t tag, bus_space_handle_t hnd,
707 bus_size_t offset, bus_size_t size, bus_space_handle_t *handlep)
710 return (bus_space_subregion(tag, hnd, offset, size, handlep));
713 #if !defined(__amd64__)
715 kcsan_bus_space_alloc(bus_space_tag_t tag, bus_addr_t reg_start,
716 bus_addr_t reg_end, bus_size_t size, bus_size_t alignment,
717 bus_size_t boundary, int flags, bus_addr_t *addrp,
718 bus_space_handle_t *handlep)
721 return (bus_space_alloc(tag, reg_start, reg_end, size, alignment,
722 boundary, flags, addrp, handlep));
727 kcsan_bus_space_free(bus_space_tag_t tag, bus_space_handle_t hnd,
731 bus_space_free(tag, hnd, size);
735 kcsan_bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t hnd,
736 bus_size_t offset, bus_size_t size, int flags)
739 bus_space_barrier(tag, hnd, offset, size, flags);
742 #define CSAN_BUS_READ_FUNC(func, width, type) \
743 type kcsan_bus_space_read##func##_##width(bus_space_tag_t tag, \
744 bus_space_handle_t hnd, bus_size_t offset) \
746 return (bus_space_read##func##_##width(tag, hnd, \
750 #define CSAN_BUS_READ_PTR_FUNC(func, width, type) \
751 void kcsan_bus_space_read_##func##_##width(bus_space_tag_t tag, \
752 bus_space_handle_t hnd, bus_size_t size, type *buf, \
755 kcsan_access((uintptr_t)buf, sizeof(type) * count, \
756 false, false, __RET_ADDR); \
757 bus_space_read_##func##_##width(tag, hnd, size, buf, \
761 CSAN_BUS_READ_FUNC(, 1, uint8_t)
762 CSAN_BUS_READ_FUNC(_stream, 1, uint8_t)
763 CSAN_BUS_READ_PTR_FUNC(multi, 1, uint8_t)
764 CSAN_BUS_READ_PTR_FUNC(multi_stream, 1, uint8_t)
765 CSAN_BUS_READ_PTR_FUNC(region, 1, uint8_t)
766 CSAN_BUS_READ_PTR_FUNC(region_stream, 1, uint8_t)
768 CSAN_BUS_READ_FUNC(, 2, uint16_t)
769 CSAN_BUS_READ_FUNC(_stream, 2, uint16_t)
770 CSAN_BUS_READ_PTR_FUNC(multi, 2, uint16_t)
771 CSAN_BUS_READ_PTR_FUNC(multi_stream, 2, uint16_t)
772 CSAN_BUS_READ_PTR_FUNC(region, 2, uint16_t)
773 CSAN_BUS_READ_PTR_FUNC(region_stream, 2, uint16_t)
775 CSAN_BUS_READ_FUNC(, 4, uint32_t)
776 CSAN_BUS_READ_FUNC(_stream, 4, uint32_t)
777 CSAN_BUS_READ_PTR_FUNC(multi, 4, uint32_t)
778 CSAN_BUS_READ_PTR_FUNC(multi_stream, 4, uint32_t)
779 CSAN_BUS_READ_PTR_FUNC(region, 4, uint32_t)
780 CSAN_BUS_READ_PTR_FUNC(region_stream, 4, uint32_t)
782 CSAN_BUS_READ_FUNC(, 8, uint64_t)
783 #if defined(__aarch64__)
784 CSAN_BUS_READ_FUNC(_stream, 8, uint64_t)
785 CSAN_BUS_READ_PTR_FUNC(multi, 8, uint64_t)
786 CSAN_BUS_READ_PTR_FUNC(multi_stream, 8, uint64_t)
787 CSAN_BUS_READ_PTR_FUNC(region, 8, uint64_t)
788 CSAN_BUS_READ_PTR_FUNC(region_stream, 8, uint64_t)
791 #define CSAN_BUS_WRITE_FUNC(func, width, type) \
792 void kcsan_bus_space_write##func##_##width(bus_space_tag_t tag, \
793 bus_space_handle_t hnd, bus_size_t offset, type value) \
795 bus_space_write##func##_##width(tag, hnd, offset, value); \
798 #define CSAN_BUS_WRITE_PTR_FUNC(func, width, type) \
799 void kcsan_bus_space_write_##func##_##width(bus_space_tag_t tag, \
800 bus_space_handle_t hnd, bus_size_t size, const type *buf, \
803 kcsan_access((uintptr_t)buf, sizeof(type) * count, \
804 true, false, __RET_ADDR); \
805 bus_space_write_##func##_##width(tag, hnd, size, buf, \
809 CSAN_BUS_WRITE_FUNC(, 1, uint8_t)
810 CSAN_BUS_WRITE_FUNC(_stream, 1, uint8_t)
811 CSAN_BUS_WRITE_PTR_FUNC(multi, 1, uint8_t)
812 CSAN_BUS_WRITE_PTR_FUNC(multi_stream, 1, uint8_t)
813 CSAN_BUS_WRITE_PTR_FUNC(region, 1, uint8_t)
814 CSAN_BUS_WRITE_PTR_FUNC(region_stream, 1, uint8_t)
816 CSAN_BUS_WRITE_FUNC(, 2, uint16_t)
817 CSAN_BUS_WRITE_FUNC(_stream, 2, uint16_t)
818 CSAN_BUS_WRITE_PTR_FUNC(multi, 2, uint16_t)
819 CSAN_BUS_WRITE_PTR_FUNC(multi_stream, 2, uint16_t)
820 CSAN_BUS_WRITE_PTR_FUNC(region, 2, uint16_t)
821 CSAN_BUS_WRITE_PTR_FUNC(region_stream, 2, uint16_t)
823 CSAN_BUS_WRITE_FUNC(, 4, uint32_t)
824 CSAN_BUS_WRITE_FUNC(_stream, 4, uint32_t)
825 CSAN_BUS_WRITE_PTR_FUNC(multi, 4, uint32_t)
826 CSAN_BUS_WRITE_PTR_FUNC(multi_stream, 4, uint32_t)
827 CSAN_BUS_WRITE_PTR_FUNC(region, 4, uint32_t)
828 CSAN_BUS_WRITE_PTR_FUNC(region_stream, 4, uint32_t)
830 CSAN_BUS_WRITE_FUNC(, 8, uint64_t)
831 #if defined(__aarch64__)
832 CSAN_BUS_WRITE_FUNC(_stream, 8, uint64_t)
833 CSAN_BUS_WRITE_PTR_FUNC(multi, 8, uint64_t)
834 CSAN_BUS_WRITE_PTR_FUNC(multi_stream, 8, uint64_t)
835 CSAN_BUS_WRITE_PTR_FUNC(region, 8, uint64_t)
836 CSAN_BUS_WRITE_PTR_FUNC(region_stream, 8, uint64_t)
839 #define CSAN_BUS_SET_FUNC(func, width, type) \
840 void kcsan_bus_space_set_##func##_##width(bus_space_tag_t tag, \
841 bus_space_handle_t hnd, bus_size_t offset, type value, \
844 bus_space_set_##func##_##width(tag, hnd, offset, value, \
848 CSAN_BUS_SET_FUNC(multi, 1, uint8_t)
849 CSAN_BUS_SET_FUNC(region, 1, uint8_t)
850 #if !defined(__aarch64__)
851 CSAN_BUS_SET_FUNC(multi_stream, 1, uint8_t)
852 CSAN_BUS_SET_FUNC(region_stream, 1, uint8_t)
855 CSAN_BUS_SET_FUNC(multi, 2, uint16_t)
856 CSAN_BUS_SET_FUNC(region, 2, uint16_t)
857 #if !defined(__aarch64__)
858 CSAN_BUS_SET_FUNC(multi_stream, 2, uint16_t)
859 CSAN_BUS_SET_FUNC(region_stream, 2, uint16_t)
862 CSAN_BUS_SET_FUNC(multi, 4, uint32_t)
863 CSAN_BUS_SET_FUNC(region, 4, uint32_t)
864 #if !defined(__aarch64__)
865 CSAN_BUS_SET_FUNC(multi_stream, 4, uint32_t)
866 CSAN_BUS_SET_FUNC(region_stream, 4, uint32_t)
869 #if !defined(__amd64__)
870 CSAN_BUS_SET_FUNC(multi, 8, uint64_t)
871 CSAN_BUS_SET_FUNC(region, 8, uint64_t)
872 #if !defined(__aarch64__)
873 CSAN_BUS_SET_FUNC(multi_stream, 8, uint64_t)
874 CSAN_BUS_SET_FUNC(region_stream, 8, uint64_t)
878 #define CSAN_BUS_PEEK_FUNC(width, type) \
879 int kcsan_bus_space_peek_##width(bus_space_tag_t tag, \
880 bus_space_handle_t hnd, bus_size_t offset, type *value) \
882 kcsan_access((uintptr_t)value, sizeof(type), true, false, \
884 return (bus_space_peek_##width(tag, hnd, offset, value)); \
887 CSAN_BUS_PEEK_FUNC(1, uint8_t)
888 CSAN_BUS_PEEK_FUNC(2, uint16_t)
889 CSAN_BUS_PEEK_FUNC(4, uint32_t)
890 #if !defined(__i386__)
891 CSAN_BUS_PEEK_FUNC(8, uint64_t)
894 #define CSAN_BUS_POKE_FUNC(width, type) \
895 int kcsan_bus_space_poke_##width(bus_space_tag_t tag, \
896 bus_space_handle_t hnd, bus_size_t offset, type value) \
898 return (bus_space_poke_##width(tag, hnd, offset, value)); \
901 CSAN_BUS_POKE_FUNC(1, uint8_t)
902 CSAN_BUS_POKE_FUNC(2, uint16_t)
903 CSAN_BUS_POKE_FUNC(4, uint32_t)
904 #if !defined(__i386__)
905 CSAN_BUS_POKE_FUNC(8, uint64_t)