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authorDaniel Borkmann <daniel@iogearbox.net>2018-01-26 23:33:45 +0100
committerAlexei Starovoitov <ast@kernel.org>2018-01-26 16:42:06 -0800
commit1fb5c9c622c559e1524a419358c78397be822dda (patch)
treebe4ae2868b334228f59e2bd0cc16c6678bf9c223 /arch/mips
parent740d52c646d748bf439ab3398359c3257efd022e (diff)
downloadlinux-1fb5c9c622c559e1524a419358c78397be822dda.tar.bz2
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>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/net/ebpf_jit.c10
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/mips/net/ebpf_jit.c b/arch/mips/net/ebpf_jit.c
index 4e347030ed2c..296f1410ae5c 100644
--- a/arch/mips/net/ebpf_jit.c
+++ b/arch/mips/net/ebpf_jit.c
@@ -860,11 +860,6 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
break;
case BPF_DIV:
case BPF_MOD:
- b_off = b_imm(exit_idx, ctx);
- if (is_bad_offset(b_off))
- return -E2BIG;
- emit_instr(ctx, beq, src, MIPS_R_ZERO, b_off);
- emit_instr(ctx, movz, MIPS_R_V0, MIPS_R_ZERO, src);
emit_instr(ctx, ddivu, dst, src);
if (bpf_op == BPF_DIV)
emit_instr(ctx, mflo, dst);
@@ -943,11 +938,6 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
break;
case BPF_DIV:
case BPF_MOD:
- b_off = b_imm(exit_idx, ctx);
- if (is_bad_offset(b_off))
- return -E2BIG;
- emit_instr(ctx, beq, src, MIPS_R_ZERO, b_off);
- emit_instr(ctx, movz, MIPS_R_V0, MIPS_R_ZERO, src);
emit_instr(ctx, divu, dst, src);
if (bpf_op == BPF_DIV)
emit_instr(ctx, mflo, dst);