On Sat, Jun 04, 2016 at 03:00:29PM -0700, Zi Shen Lim wrote: > Remove superfluous stack frame, saving us 3 instructions for > every JMP_CALL. > > Signed-off-by: Zi Shen Lim <zlim....@gmail.com> > --- > arch/arm64/net/bpf_jit_comp.c | 3 --- > 1 file changed, 3 deletions(-) > > diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c > index 51abc97..7ae304e 100644 > --- a/arch/arm64/net/bpf_jit_comp.c > +++ b/arch/arm64/net/bpf_jit_comp.c > @@ -578,11 +578,8 @@ emit_cond_jmp: > const u64 func = (u64)__bpf_call_base + imm; > > emit_a64_mov_i64(tmp, func, ctx); > - emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx); > - emit(A64_MOV(1, A64_FP, A64_SP), ctx); > emit(A64_BLR(tmp), ctx); > emit(A64_MOV(1, r0, A64_R(0)), ctx); > - emit(A64_POP(A64_FP, A64_LR, A64_SP), ctx); > break; > }
Is the jitted code intended to be unwindable by standard tools? Will
