From: Xi Ruoyao <xry111@xry111.site>
Date: Wed, 12 Oct 2022 08:36:08 +0000 (+0800)
Subject: LoongArch: Add Kconfig option AS_HAS_EXPLICIT_RELOCS
X-Git-Tag: v6.1-rc5~195^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0d8dad7048611e5ba02ae8519539ce4b8b1482d3;p=platform%2Fkernel%2Flinux-starfive.git

LoongArch: Add Kconfig option AS_HAS_EXPLICIT_RELOCS

GNU as >= 2.40 and GCC >= 13 will support using explicit relocation
hints in the assembly code, instead of la.* macros. The usage of
explicit relocation hints can improve code generation so it's enabled
by default by GCC >= 13.

Introduce a Kconfig option AS_HAS_EXPLICIT_RELOCS as the switch for
"use explicit relocation hints or not".

Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index f65c39e..9aeecc8 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -195,6 +195,9 @@ config SCHED_OMIT_FRAME_POINTER
 	bool
 	default y
 
+config AS_HAS_EXPLICIT_RELOCS
+	def_bool $(as-instr,x:pcalau12i \$t0$(comma)%pc_hi20(x))
+
 menu "Kernel type and options"
 
 source "kernel/Kconfig.hz"