From: Nick Desaulniers <ndesaulniers@google.com>
To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de
Cc: clang-built-linux@googlegroups.com,
Nick Desaulniers <ndesaulniers@google.com>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] x86, realmode: explicitly set ENTRY in linker script
Date: Mon, 23 Sep 2019 15:24:02 -0700 [thread overview]
Message-ID: <20190923222403.22956-1-ndesaulniers@google.com> (raw)
Linking with ld.lld via $ make LD=ld.lld produces the warning:
ld.lld: warning: cannot find entry symbol _start; defaulting to 0x1000
Linking with ld.bfd shows the default entry is 0x1000:
$ readelf -h arch/x86/realmode/rm/realmode.elf | grep Entry
Entry point address: 0x1000
While ld.lld is being pedantic, just set the entry point explicitly,
instead of depending on the implicit default.
Link: https://github.com/ClangBuiltLinux/linux/issues/216
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
arch/x86/realmode/rm/realmode.lds.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/realmode/rm/realmode.lds.S b/arch/x86/realmode/rm/realmode.lds.S
index 3bb980800c58..2034f5f79bff 100644
--- a/arch/x86/realmode/rm/realmode.lds.S
+++ b/arch/x86/realmode/rm/realmode.lds.S
@@ -11,6 +11,7 @@
OUTPUT_FORMAT("elf32-i386")
OUTPUT_ARCH(i386)
+ENTRY(0x1000)
SECTIONS
{
--
2.23.0.351.gc4317032e6-goog
next reply other threads:[~2019-09-23 22:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 22:24 Nick Desaulniers [this message]
2019-09-24 17:30 ` Sedat Dilek
2019-09-24 18:24 ` Nathan Chancellor
2019-09-24 18:32 ` Nick Desaulniers
2019-09-24 19:33 ` [PATCH v2] x86, realmode: explicitly set entry via command line Nick Desaulniers
2019-09-24 19:37 ` Nick Desaulniers
2019-09-25 10:20 ` Borislav Petkov
2019-09-25 16:35 ` Nick Desaulniers
2019-09-25 17:02 ` Peter Smith
2019-09-25 17:10 ` Borislav Petkov
2019-09-25 18:09 ` [PATCH v3] x86, realmode: explicitly set entry via ENTRY in linker script Nick Desaulniers
2019-10-01 10:37 ` [tip: x86/boot] x86/realmode: Explicitly set entry point " tip-bot2 for Nick Desaulniers
2019-10-01 20:18 ` tip-bot2 for Nick Desaulniers
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