[PATCH bpf-next v3 06/12] bpf: sparc64: Use 32-bit tail call index

[Ilya Leoshkevich <iii@xxxxxxxxxxxxx>]

The interpreter does the following:

  u32 index = BPF_R3;

and JITs should do the same.

Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
---
 arch/sparc/net/bpf_jit_comp_64.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c
index 0a3c18e39199..6c482685dc6c 100644
--- a/arch/sparc/net/bpf_jit_comp_64.c
+++ b/arch/sparc/net/bpf_jit_comp_64.c
@@ -856,6 +856,7 @@ static void emit_tail_call(struct jit_ctx *ctx)
 
 	ctx->saw_tail_call = true;
 
+	emit_alu_K(SRL, bpf_index, 0, ctx);
 	off = offsetof(struct bpf_array, map.max_entries);
 	emit(LD32 | IMMED | RS1(bpf_array) | S13(off) | RD(tmp), ctx);
 	emit_cmp(bpf_index, tmp, ctx);
-- 
2.39.1