[lld] r292225 - [ELF] - Support optional comma after output section command.
George Rimar via llvm-commits
llvm-commits at lists.llvm.org
Tue Jan 17 07:32:12 PST 2017
Author: grimar
Date: Tue Jan 17 09:32:12 2017
New Revision: 292225
URL: http://llvm.org/viewvc/llvm-project?rev=292225&view=rev
Log:
[ELF] - Support optional comma after output section command.
I found this when tried to link linux kernel with LLD:
https://github.com/torvalds/linux/blob/master/arch/x86/entry/vdso/vdso-layout.lds.S#L86
Output section command can have optional comma at the end:
.text : { *(.text*) } :text =0x90909090,
It was documented about 3 years ago for binutils:
https://sourceware.org/ml/binutils/2014-04/msg00045.html
Differential revision: https://reviews.llvm.org/D28803
Modified:
lld/trunk/ELF/LinkerScript.cpp
lld/trunk/test/ELF/linkerscript/sections-padding.s
Modified: lld/trunk/ELF/LinkerScript.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/LinkerScript.cpp?rev=292225&r1=292224&r2=292225&view=diff
==============================================================================
--- lld/trunk/ELF/LinkerScript.cpp (original)
+++ lld/trunk/ELF/LinkerScript.cpp Tue Jan 17 09:32:12 2017
@@ -1471,6 +1471,9 @@ ScriptParser::readOutputSectionDescripti
else if (peek().startswith("="))
Cmd->Filler = readOutputSectionFiller(next().drop_front());
+ // Consume optional comma following output section command.
+ consume(",");
+
return Cmd;
}
Modified: lld/trunk/test/ELF/linkerscript/sections-padding.s
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/linkerscript/sections-padding.s?rev=292225&r1=292224&r2=292225&view=diff
==============================================================================
--- lld/trunk/test/ELF/linkerscript/sections-padding.s (original)
+++ lld/trunk/test/ELF/linkerscript/sections-padding.s Tue Jan 17 09:32:12 2017
@@ -36,6 +36,11 @@
# RUN: ld.lld -o %t.out --script %t.script %t
# RUN: llvm-objdump -s %t.out | FileCheck -check-prefix=YES %s
+## Check case with optional comma following output section command:
+# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x1122, .a : { *(.a*) } }" > %t.script
+# RUN: ld.lld -o %t.out --script %t.script %t
+# RUN: llvm-objdump -s %t.out | FileCheck -check-prefix=YES %s
+
.section .mysec.1,"a"
.align 16
.byte 0x66
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