Re: [PATCH v2 bpf-next 01/13] bpf: x86: Factor out emission of ModR/M for *(reg + off)

From: Brendan Jackman
Date: Tue Dec 01 2020 - 07:15:52 EST


On Sat, Nov 28, 2020 at 05:15:52PM -0800, Alexei Starovoitov wrote:
> On Fri, Nov 27, 2020 at 05:57:26PM +0000, Brendan Jackman wrote:
> > +/* Emit the ModR/M byte for addressing *(r1 + off) and r2 */
> > +static void emit_modrm_dstoff(u8 **pprog, u32 r1, u32 r2, int off)
>
> same concern as in the another patch. If you could avoid intel's puzzling names
> like above it will make reviewing the patch easier.

In this case there is actually a call like

emit_modrm_dstoff(&prog, src_reg, dst_reg)

So calling the function args dst_reg, src_reg would be misleading.

I could call them ptr_reg and val_reg or something?