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bpf, mips64: 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 mips64 JIT. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: David Daney <david.daney@cavium.com> Reviewed-by: David Daney <david.daney@cavium.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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1 changed files with 0 additions and 10 deletions
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@ -860,11 +860,6 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
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break;
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case BPF_DIV:
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case BPF_MOD:
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b_off = b_imm(exit_idx, ctx);
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if (is_bad_offset(b_off))
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return -E2BIG;
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emit_instr(ctx, beq, src, MIPS_R_ZERO, b_off);
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emit_instr(ctx, movz, MIPS_R_V0, MIPS_R_ZERO, src);
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emit_instr(ctx, ddivu, dst, src);
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if (bpf_op == BPF_DIV)
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emit_instr(ctx, mflo, dst);
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@ -943,11 +938,6 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
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break;
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case BPF_DIV:
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case BPF_MOD:
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b_off = b_imm(exit_idx, ctx);
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if (is_bad_offset(b_off))
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return -E2BIG;
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emit_instr(ctx, beq, src, MIPS_R_ZERO, b_off);
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emit_instr(ctx, movz, MIPS_R_V0, MIPS_R_ZERO, src);
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emit_instr(ctx, divu, dst, src);
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if (bpf_op == BPF_DIV)
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emit_instr(ctx, mflo, dst);
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