bpf, ppc64: remove obsolete exception handling from div/mod
Since we've changed div/mod exception handling for src_reg in eBPF verifier itself, remove the leftovers from ppc64 JIT. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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@ -381,10 +381,6 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image,
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goto bpf_alu32_trunc;
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case BPF_ALU | BPF_DIV | BPF_X: /* (u32) dst /= (u32) src */
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case BPF_ALU | BPF_MOD | BPF_X: /* (u32) dst %= (u32) src */
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PPC_CMPWI(src_reg, 0);
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PPC_BCC_SHORT(COND_NE, (ctx->idx * 4) + 12);
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PPC_LI(b2p[BPF_REG_0], 0);
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PPC_JMP(exit_addr);
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if (BPF_OP(code) == BPF_MOD) {
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PPC_DIVWU(b2p[TMP_REG_1], dst_reg, src_reg);
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PPC_MULW(b2p[TMP_REG_1], src_reg,
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@ -395,10 +391,6 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image,
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goto bpf_alu32_trunc;
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case BPF_ALU64 | BPF_DIV | BPF_X: /* dst /= src */
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case BPF_ALU64 | BPF_MOD | BPF_X: /* dst %= src */
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PPC_CMPDI(src_reg, 0);
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PPC_BCC_SHORT(COND_NE, (ctx->idx * 4) + 12);
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PPC_LI(b2p[BPF_REG_0], 0);
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PPC_JMP(exit_addr);
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if (BPF_OP(code) == BPF_MOD) {
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PPC_DIVD(b2p[TMP_REG_1], dst_reg, src_reg);
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PPC_MULD(b2p[TMP_REG_1], src_reg,
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