Re: [PATCH 1/2] bpf, riscv: fix bugs in JIT for 32-bit ALU operations

From: Song Liu
Date: Thu May 30 2019 - 19:12:47 EST


On Thu, May 30, 2019 at 3:34 PM Luke Nelson <luke.r.nels@xxxxxxxxx> wrote:
>
> On Thu, May 30, 2019 at 1:53 PM Song Liu <liu.song.a23@xxxxxxxxx> wrote:
> >
> > This is a little messy. How about we introduce some helper function
> > like:
> >
> > /* please find a better name... */
> > emit_32_or_64(bool is64, const u32 insn_32, const u32 inst_64, struct
> > rv_jit_context *ctx)
> > {
> > if (is64)
> > emit(insn_64, ctx);
> > else {
> > emit(insn_32, ctx);
> > rd = xxxx;
> > emit_zext_32(rd, ctx);
> > }
> > }
>
> This same check is used throughout the file, maybe clean it up in a
> separate patch?

Yes, let's do follow up patch.

Thanks,
Song