@@ -676,8 +676,14 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
/* special mov32 for zext */
EMIT(PPC_RAW_RLWINM(dst_reg, dst_reg, 0, 0, 31));
break;
- }
- EMIT(PPC_RAW_MR(dst_reg, src_reg));
+ } else if (off == 8) {
+ EMIT(PPC_RAW_EXTSB(dst_reg, src_reg));
+ } else if (off == 16) {
+ EMIT(PPC_RAW_EXTSH(dst_reg, src_reg));
+ } else if (off == 32) {
+ EMIT(PPC_RAW_EXTSW(dst_reg, src_reg));
+ } else if (dst_reg != src_reg)
+ EMIT(PPC_RAW_MR(dst_reg, src_reg));
goto bpf_alu32_trunc;
case BPF_ALU | BPF_MOV | BPF_K: /* (u32) dst = imm */
case BPF_ALU64 | BPF_MOV | BPF_K: /* dst = (s64) imm */
Add jit support for sign extended mov. Tested using test_bpf module. Signed-off-by: Artem Savkov <asavkov@redhat.com> --- arch/powerpc/net/bpf_jit_comp64.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)