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authorDaniel Borkmann <daniel@iogearbox.net>2018-01-27 01:33:44 +0300
committerAlexei Starovoitov <ast@kernel.org>2018-01-27 03:42:06 +0300
commit740d52c646d748bf439ab3398359c3257efd022e (patch)
tree23bc1221069ff2828dea90d879d98a27dad185c9 /arch/sparc/net
parent53fbf5719aab34e747ec32a41ff55bed07d16406 (diff)
downloadlinux-740d52c646d748bf439ab3398359c3257efd022e.tar.xz
bpf, sparc64: 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 sparc64 JIT. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'arch/sparc/net')
-rw-r--r--arch/sparc/net/bpf_jit_comp_64.c18
1 files changed, 0 insertions, 18 deletions
diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c
index 50a24d7bd4c5..48a25869349b 100644
--- a/arch/sparc/net/bpf_jit_comp_64.c
+++ b/arch/sparc/net/bpf_jit_comp_64.c
@@ -967,31 +967,17 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
emit_alu(MULX, src, dst, ctx);
break;
case BPF_ALU | BPF_DIV | BPF_X:
- emit_cmp(src, G0, ctx);
- emit_branch(BE|ANNUL, ctx->idx, ctx->epilogue_offset, ctx);
- emit_loadimm(0, bpf2sparc[BPF_REG_0], ctx);
-
emit_write_y(G0, ctx);
emit_alu(DIV, src, dst, ctx);
break;
-
case BPF_ALU64 | BPF_DIV | BPF_X:
- emit_cmp(src, G0, ctx);
- emit_branch(BE|ANNUL, ctx->idx, ctx->epilogue_offset, ctx);
- emit_loadimm(0, bpf2sparc[BPF_REG_0], ctx);
-
emit_alu(UDIVX, src, dst, ctx);
break;
-
case BPF_ALU | BPF_MOD | BPF_X: {
const u8 tmp = bpf2sparc[TMP_REG_1];
ctx->tmp_1_used = true;
- emit_cmp(src, G0, ctx);
- emit_branch(BE|ANNUL, ctx->idx, ctx->epilogue_offset, ctx);
- emit_loadimm(0, bpf2sparc[BPF_REG_0], ctx);
-
emit_write_y(G0, ctx);
emit_alu3(DIV, dst, src, tmp, ctx);
emit_alu3(MULX, tmp, src, tmp, ctx);
@@ -1003,10 +989,6 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
ctx->tmp_1_used = true;
- emit_cmp(src, G0, ctx);
- emit_branch(BE|ANNUL, ctx->idx, ctx->epilogue_offset, ctx);
- emit_loadimm(0, bpf2sparc[BPF_REG_0], ctx);
-
emit_alu3(UDIVX, dst, src, tmp, ctx);
emit_alu3(MULX, tmp, src, tmp, ctx);
emit_alu3(SUB, dst, tmp, dst, ctx);