Re: [PATCH v2 0/4] LoongArch: Support new relocation types

From: Xi Ruoyao
Date: Thu Jul 28 2022 - 10:05:56 EST


On Thu, 2022-07-28 at 20:33 +0800, Huacai Chen wrote:
> Hi, Arnd,

/* snip */

> Could you update the cross-compilers here [1] to make this series be
> possible upstream in the 5.20 cycle? Or we can only do that until new
> binutils/gcc be released?

Hi Huacai and Arnd,

The old toolchain will use

R_LARCH_PUSH_PCREL _GLOBAL_OFFSET_TABLE_
R_LARCH_PUSH_GPREL symbol
R_LARCH_ADD

to perform a PC-relative addressing for a GOT entry, and the new
toolchain will use R_LARCH_GOT_PC_{HI20,LO12}. Both way are supported
by this series.

I've tested the V3 patch (V2 + suggestions from Youling, I'll sent it
later after rewording the third patch) with both my system toolchain (no
new reloc support) and a toolchain built from binutils & gcc master.
Both of the build works fine.

So a toolchain update seems not immediately required.
--
Xi Ruoyao <xry111@xxxxxxxxxxx>
School of Aerospace Science and Technology, Xidian University