diff mbox series

[bpf-next,4/7] bpf, arm64: Support unconditional bswap

Message ID 20230815154158.717901-5-xukuohai@huaweicloud.com (mailing list archive)
State New, archived
Headers show
Series Support cpu v4 instructions for arm64 | expand

Commit Message

Xu Kuohai Aug. 15, 2023, 3:41 p.m. UTC 
From: Xu Kuohai <xukuohai@huawei.com>

Add jit support for unconditional bswap instructions.

Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
---
 arch/arm64/net/bpf_jit_comp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 9b796e74ef42..1d35acb880dc 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -855,11 +855,12 @@  static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
 	/* dst = BSWAP##imm(dst) */
 	case BPF_ALU | BPF_END | BPF_FROM_LE:
 	case BPF_ALU | BPF_END | BPF_FROM_BE:
+	case BPF_ALU64 | BPF_END | BPF_FROM_LE:
 #ifdef CONFIG_CPU_BIG_ENDIAN
-		if (BPF_SRC(code) == BPF_FROM_BE)
+		if (BPF_CLASS(code) == BPF_ALU && BPF_SRC(code) == BPF_FROM_BE)
 			goto emit_bswap_uxt;
 #else /* !CONFIG_CPU_BIG_ENDIAN */
-		if (BPF_SRC(code) == BPF_FROM_LE)
+		if (BPF_CLASS(code) == BPF_ALU && BPF_SRC(code) == BPF_FROM_LE)
 			goto emit_bswap_uxt;
 #endif
 		switch (imm) {