Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Jiong Wang <jiong.wang@xxxxxxxxxxxxx>
---
arch/sparc/net/bpf_jit_comp_64.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c
index 65428e7..8318d3a 100644
--- a/arch/sparc/net/bpf_jit_comp_64.c
+++ b/arch/sparc/net/bpf_jit_comp_64.c
@@ -905,6 +905,10 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
ctx->saw_frame_pointer = true;
switch (code) {
+ /* explicit zero extension */
+ case BPF_ALU | BPF_ZEXT:
+ emit_alu_K(SRL, dst, 0, ctx);
+ break;
/* dst = src */
case BPF_ALU | BPF_MOV | BPF_X:
emit_alu3_K(SRL, src, 0, dst, ctx);
@@ -1144,7 +1148,8 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
break;
do_alu32_trunc:
- if (BPF_CLASS(code) == BPF_ALU)
+ if (BPF_CLASS(code) == BPF_ALU &&
+ !ctx->prog->aux->verifier_zext)
emit_alu_K(SRL, dst, 0, ctx);
break;
@@ -1432,6 +1437,11 @@ static void jit_fill_hole(void *area, unsigned int size)
*ptr++ = 0x91d02005; /* ta 5 */
}
+bool bpf_jit_hardware_zext(void)
+{
+ return false;
+}
+
struct sparc64_jit_data {
struct bpf_binary_header *header;
u8 *image;
--
2.7.4
