diff options
| -rw-r--r-- | arch/loongarch/Kconfig | 1 | ||||
| -rw-r--r-- | arch/loongarch/include/asm/asm-prototypes.h | 6 | ||||
| -rw-r--r-- | arch/loongarch/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/loongarch/lib/tishift.S | 56 |
4 files changed, 65 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 1355ec0c69cc..335a98b28167 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -57,6 +57,7 @@ config LOONGARCH select ARCH_SUPPORTS_ACPI select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_HUGETLBFS + select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 select ARCH_SUPPORTS_LTO_CLANG select ARCH_SUPPORTS_LTO_CLANG_THIN select ARCH_SUPPORTS_NUMA_BALANCING diff --git a/arch/loongarch/include/asm/asm-prototypes.h b/arch/loongarch/include/asm/asm-prototypes.h index cf8e1a4e7c19..51f224bcfc65 100644 --- a/arch/loongarch/include/asm/asm-prototypes.h +++ b/arch/loongarch/include/asm/asm-prototypes.h @@ -6,3 +6,9 @@ #include <asm/page.h> #include <asm/ftrace.h> #include <asm-generic/asm-prototypes.h> + +#ifdef CONFIG_ARCH_SUPPORTS_INT128 +__int128_t __ashlti3(__int128_t a, int b); +__int128_t __ashrti3(__int128_t a, int b); +__int128_t __lshrti3(__int128_t a, int b); +#endif diff --git a/arch/loongarch/lib/Makefile b/arch/loongarch/lib/Makefile index a77bf160bfc4..ccea3bbd4353 100644 --- a/arch/loongarch/lib/Makefile +++ b/arch/loongarch/lib/Makefile @@ -6,6 +6,8 @@ lib-y += delay.o memset.o memcpy.o memmove.o \ clear_user.o copy_user.o csum.o dump_tlb.o unaligned.o +obj-$(CONFIG_ARCH_SUPPORTS_INT128) += tishift.o + obj-$(CONFIG_CPU_HAS_LSX) += xor_simd.o xor_simd_glue.o obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o diff --git a/arch/loongarch/lib/tishift.S b/arch/loongarch/lib/tishift.S new file mode 100644 index 000000000000..fa1d310012bc --- /dev/null +++ b/arch/loongarch/lib/tishift.S @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <asm/asmmacro.h> +#include <linux/export.h> +#include <linux/linkage.h> + +SYM_FUNC_START(__ashlti3) + srli.d t2, a0, 1 + nor t3, zero, a2 + sll.d t1, a1, a2 + srl.d t2, t2, t3 + andi t0, a2, 64 + sll.d a0, a0, a2 + or t1, t2, t1 + maskeqz a1, a0, t0 + masknez a0, a0, t0 + masknez t0, t1, t0 + or a1, t0, a1 + jr ra +SYM_FUNC_END(__ashlti3) +EXPORT_SYMBOL(__ashlti3) + +SYM_FUNC_START(__ashrti3) + nor t3, zero, a2 + slli.d t2, a1, 1 + srl.d t1, a0, a2 + sll.d t2, t2, t3 + andi t0, a2, 64 + or t1, t2, t1 + sra.d a2, a1, a2 + srai.d a1, a1, 63 + maskeqz a0, a2, t0 + maskeqz a1, a1, t0 + masknez a2, a2, t0 + masknez t0, t1, t0 + or a1, a1, a2 + or a0, t0, a0 + jr ra +SYM_FUNC_END(__ashrti3) +EXPORT_SYMBOL(__ashrti3) + +SYM_FUNC_START(__lshrti3) + slli.d t2, a1, 1 + nor t3, zero, a2 + srl.d t1, a0, a2 + sll.d t2, t2, t3 + andi t0, a2, 64 + srl.d a1, a1, a2 + or t1, t2, t1 + maskeqz a0, a1, t0 + masknez a1, a1, t0 + masknez t0, t1, t0 + or a0, t0, a0 + jr ra +SYM_FUNC_END(__lshrti3) +EXPORT_SYMBOL(__lshrti3) |