linux-kernel - [PATCH] MIPS: generic: Support linking with LLVM ld.lld

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Message-Id: <20210321131805.98422-1-paul@crapouillou.net>
Date:   Sun, 21 Mar 2021 13:18:05 +0000
From:   Paul Cercueil <paul@...pouillou.net>
To:     Paul Burton <paulburton@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     od@...c.me, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH] MIPS: generic: Support linking with LLVM ld.lld

LLVM's ld.lld chokes on the 64-bit sign-extended load addresses. Use
32-bit addresses if the linker is LLVM's ld.lld.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 arch/mips/generic/Platform | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/mips/generic/Platform b/arch/mips/generic/Platform
index b871af16b5b6..19b7d92a4ca7 100644
--- a/arch/mips/generic/Platform
+++ b/arch/mips/generic/Platform
@@ -12,8 +12,8 @@
 cflags-$(CONFIG_MACH_INGENIC_SOC)	+= -I$(srctree)/arch/mips/include/asm/mach-ingenic
 cflags-$(CONFIG_MIPS_GENERIC)	+= -I$(srctree)/arch/mips/include/asm/mach-generic
 
-load-$(CONFIG_MIPS_GENERIC)	+= 0xffffffff80100000
-zload-$(CONFIG_MIPS_GENERIC)	+= 0xffffffff81000000
+load-$(CONFIG_MIPS_GENERIC)		+= $(if $(CONFIG_LD_IS_LLD),0x80100000,0xffffffff80100000)
+zload-$(CONFIG_MIPS_GENERIC)	+= $(if $(CONFIG_LD_IS_LLD),0x81000000,0xffffffff81000000)
 all-$(CONFIG_MIPS_GENERIC)	:= vmlinux.gz.itb
 
 its-y					:= vmlinux.its.S
-- 
2.30.2