diff options
Diffstat (limited to 'arch/xtensa/lib')
| -rw-r--r-- | arch/xtensa/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/xtensa/lib/kcsan-stubs.c | 54 | ||||
| -rw-r--r-- | arch/xtensa/lib/memcopy.S | 20 |
3 files changed, 66 insertions, 10 deletions
diff --git a/arch/xtensa/lib/Makefile b/arch/xtensa/lib/Makefile index 5848c133f7ea..d4e9c397e3fd 100644 --- a/arch/xtensa/lib/Makefile +++ b/arch/xtensa/lib/Makefile @@ -8,3 +8,5 @@ lib-y += memcopy.o memset.o checksum.o \ divsi3.o udivsi3.o modsi3.o umodsi3.o mulsi3.o \ usercopy.o strncpy_user.o strnlen_user.o lib-$(CONFIG_PCI) += pci-auto.o +lib-$(CONFIG_KCSAN) += kcsan-stubs.o +KCSAN_SANITIZE_kcsan-stubs.o := n diff --git a/arch/xtensa/lib/kcsan-stubs.c b/arch/xtensa/lib/kcsan-stubs.c new file mode 100644 index 000000000000..2b08faa62b86 --- /dev/null +++ b/arch/xtensa/lib/kcsan-stubs.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bug.h> +#include <linux/types.h> + +void __atomic_store_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +u64 __atomic_load_8(const volatile void *p, int i) +{ + BUG(); +} + +u64 __atomic_exchange_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +bool __atomic_compare_exchange_8(volatile void *p1, void *p2, u64 v, bool b, int i1, int i2) +{ + BUG(); +} + +u64 __atomic_fetch_add_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +u64 __atomic_fetch_sub_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +u64 __atomic_fetch_and_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +u64 __atomic_fetch_or_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +u64 __atomic_fetch_xor_8(volatile void *p, u64 v, int i) +{ + BUG(); +} + +u64 __atomic_fetch_nand_8(volatile void *p, u64 v, int i) +{ + BUG(); +} diff --git a/arch/xtensa/lib/memcopy.S b/arch/xtensa/lib/memcopy.S index 582d817979ed..b20d206bcb71 100644 --- a/arch/xtensa/lib/memcopy.S +++ b/arch/xtensa/lib/memcopy.S @@ -402,13 +402,13 @@ WEAK(memmove) */ # copy 16 bytes per iteration for word-aligned dst and word-aligned src #if XCHAL_HAVE_LOOPS - loopnez a7, .backLoop1done + loopnez a7, .LbackLoop1done #else /* !XCHAL_HAVE_LOOPS */ - beqz a7, .backLoop1done + beqz a7, .LbackLoop1done slli a8, a7, 4 sub a8, a3, a8 # a8 = start of first 16B source chunk #endif /* !XCHAL_HAVE_LOOPS */ -.backLoop1: +.LbackLoop1: addi a3, a3, -16 l32i a7, a3, 12 l32i a6, a3, 8 @@ -420,9 +420,9 @@ WEAK(memmove) s32i a7, a5, 4 s32i a6, a5, 0 #if !XCHAL_HAVE_LOOPS - bne a3, a8, .backLoop1 # continue loop if a3:src != a8:src_start + bne a3, a8, .LbackLoop1 # continue loop if a3:src != a8:src_start #endif /* !XCHAL_HAVE_LOOPS */ -.backLoop1done: +.LbackLoop1done: bbci.l a4, 3, .Lback2 # copy 8 bytes addi a3, a3, -8 @@ -479,13 +479,13 @@ WEAK(memmove) #endif l32i a6, a3, 0 # load first word #if XCHAL_HAVE_LOOPS - loopnez a7, .backLoop2done + loopnez a7, .LbackLoop2done #else /* !XCHAL_HAVE_LOOPS */ - beqz a7, .backLoop2done + beqz a7, .LbackLoop2done slli a10, a7, 4 sub a10, a3, a10 # a10 = start of first 16B source chunk #endif /* !XCHAL_HAVE_LOOPS */ -.backLoop2: +.LbackLoop2: addi a3, a3, -16 l32i a7, a3, 12 l32i a8, a3, 8 @@ -501,9 +501,9 @@ WEAK(memmove) __src_b a9, a6, a9 s32i a9, a5, 0 #if !XCHAL_HAVE_LOOPS - bne a3, a10, .backLoop2 # continue loop if a3:src != a10:src_start + bne a3, a10, .LbackLoop2 # continue loop if a3:src != a10:src_start #endif /* !XCHAL_HAVE_LOOPS */ -.backLoop2done: +.LbackLoop2done: bbci.l a4, 3, .Lback12 # copy 8 bytes addi a3, a3, -8 |