Commit d9839f16 authored by Pu Lehui's avatar Pu Lehui Committed by Alexei Starovoitov
Browse files

riscv, bpf: Support 32-bit offset jmp insn 



Add support 32-bit offset jmp instruction for RV64.

Signed-off-by: default avatarPu Lehui <pulehui@huawei.com>
Acked-by: default avatarBjörn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20230824095001.3408573-5-pulehui@huaweicloud.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 694896ad

arch/riscv/net/bpf_jit_comp64.c

+5 −1
Original line number Diff line number Diff line
@@ -1327,7 +1327,11 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, 


	/* JUMP off */

	case BPF_JMP | BPF_JA:

	case BPF_JMP32 | BPF_JA:

		if (BPF_CLASS(code) == BPF_JMP)

			rvoff = rv_offset(i, off, ctx);

		else

			rvoff = rv_offset(i, imm, ctx);

		ret = emit_jump_and_link(RV_REG_ZERO, rvoff, true, ctx);

		if (ret)

			return ret;