diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/jit.c | 26 | ||||
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_asm.h | 2 |
2 files changed, 26 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c index e7eeb7a07f81..2609a2487100 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c @@ -944,7 +944,7 @@ wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) if (alu_op == ALU_OP_XOR) { if (!~imm) emit_alu(nfp_prog, reg_both(dst), reg_none(), - ALU_OP_NEG, reg_b(dst)); + ALU_OP_NOT, reg_b(dst)); if (!imm || !~imm) return; } @@ -1218,6 +1218,18 @@ static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) return 0; } +static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) +{ + const struct bpf_insn *insn = &meta->insn; + + emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), + ALU_OP_SUB, reg_b(insn->dst_reg * 2)); + emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), + ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); + + return 0; +} + static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) { const struct bpf_insn *insn = &meta->insn; @@ -1338,6 +1350,16 @@ static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); } +static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) +{ + u8 dst = meta->insn.dst_reg * 2; + + emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); + wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); + + return 0; +} + static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) { const struct bpf_insn *insn = &meta->insn; @@ -1847,6 +1869,7 @@ static const instr_cb_t instr_cb[256] = { [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, + [BPF_ALU64 | BPF_NEG] = neg_reg64, [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, @@ -1861,6 +1884,7 @@ static const instr_cb_t instr_cb[256] = { [BPF_ALU | BPF_ADD | BPF_K] = add_imm, [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, + [BPF_ALU | BPF_NEG] = neg_reg, [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, [BPF_ALU | BPF_END | BPF_X] = end_reg32, [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, diff --git a/drivers/net/ethernet/netronome/nfp/nfp_asm.h b/drivers/net/ethernet/netronome/nfp/nfp_asm.h index f4d1df3a1925..74d0c11ab2f9 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_asm.h +++ b/drivers/net/ethernet/netronome/nfp/nfp_asm.h @@ -174,7 +174,7 @@ enum shf_sc { enum alu_op { ALU_OP_NONE = 0x00, ALU_OP_ADD = 0x01, - ALU_OP_NEG = 0x04, + ALU_OP_NOT = 0x04, ALU_OP_AND = 0x08, ALU_OP_SUB_C = 0x0d, ALU_OP_ADD_C = 0x11, |