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| author | Daniel Borkmann <daniel@iogearbox.net> | 2018-01-27 01:33:47 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-01-27 03:42:07 +0300 |
| commit | 73ae3c0426f01295ef307caf9531c0453b8f2728 (patch) | |
| tree | 3c6a1237eeb669d51a5928095ffee5ec44b747c0 | |
| parent | e472d5d8afeccca835334d10e0f9389d2baba9c0 (diff) | |
| download | linux-73ae3c0426f01295ef307caf9531c0453b8f2728.tar.xz | |
bpf, arm: 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 arm32 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shubham Bansal <illusionist.neo@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | arch/arm/net/bpf_jit_32.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index 41e2feb0cf4f..b5030e1a41d8 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -363,15 +363,7 @@ static inline int epilogue_offset(const struct jit_ctx *ctx) static inline void emit_udivmod(u8 rd, u8 rm, u8 rn, struct jit_ctx *ctx, u8 op) { const u8 *tmp = bpf2a32[TMP_REG_1]; - s32 jmp_offset; - /* checks if divisor is zero or not. If it is, then - * exit directly. - */ - emit(ARM_CMP_I(rn, 0), ctx); - _emit(ARM_COND_EQ, ARM_MOV_I(ARM_R0, 0), ctx); - jmp_offset = epilogue_offset(ctx); - _emit(ARM_COND_EQ, ARM_B(jmp_offset), ctx); #if __LINUX_ARM_ARCH__ == 7 if (elf_hwcap & HWCAP_IDIVA) { if (op == BPF_DIV) |