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riscv, bpf: Support 32-bit offset jmp insn
author
Pu Lehui
<pulehui@huawei.com>
Thu, 24 Aug 2023 09:49:58 +0000
(09:49 +0000)
committer
Alexei Starovoitov
<ast@kernel.org>
Thu, 24 Aug 2023 16:13:08 +0000
(09:13 -0700)
Add support 32-bit offset jmp instruction for RV64.
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Acked-by: Björn Töpel <bjorn@kernel.org>
Link:
https://lore.kernel.org/r/20230824095001.3408573-5-pulehui@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
arch/riscv/net/bpf_jit_comp64.c
patch
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diff --git
a/arch/riscv/net/bpf_jit_comp64.c
b/arch/riscv/net/bpf_jit_comp64.c
index
bcf1e75
..
076619f
100644
(file)
--- a/
arch/riscv/net/bpf_jit_comp64.c
+++ b/
arch/riscv/net/bpf_jit_comp64.c
@@
-1327,7
+1327,11
@@
out_be:
/* JUMP off */
case BPF_JMP | BPF_JA:
- rvoff = rv_offset(i, off, ctx);
+ 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;