[lld] r253018 - [ELF2] - dont merge .data.rel.ro/.data.rel.ro.local into .data section.

[George Rimar via llvm-commits]

Author: grimar
Date: Fri Nov 13 01:56:27 2015
New Revision: 253018

URL: http://llvm.org/viewvc/llvm-project?rev=253018&view=rev
Log:
[ELF2] - dont merge .data.rel.ro/.data.rel.ro.local into .data section.

This sections can be protected with relro after resolving relocations by dynamic linker.

Differential revision: http://reviews.llvm.org/D14567

Modified:
    lld/trunk/ELF/Writer.cpp
    lld/trunk/test/elf2/section-name.s

Modified: lld/trunk/ELF/Writer.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Writer.cpp?rev=253018&r1=253017&r2=253018&view=diff
==============================================================================
--- lld/trunk/ELF/Writer.cpp (original)
+++ lld/trunk/ELF/Writer.cpp Fri Nov 13 01:56:27 2015
@@ -491,6 +491,8 @@ StringRef Writer<ELFT>::getOutputSection
     return ".text";
   if (S.startswith(".rodata."))
     return ".rodata";
+  if (S.startswith(".data.rel.ro"))
+    return ".data.rel.ro";
   if (S.startswith(".data."))
     return ".data";
   if (S.startswith(".bss."))

Modified: lld/trunk/test/elf2/section-name.s
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/elf2/section-name.s?rev=253018&r1=253017&r2=253018&view=diff
==============================================================================
--- lld/trunk/test/elf2/section-name.s (original)
+++ lld/trunk/test/elf2/section-name.s Fri Nov 13 01:56:27 2015
@@ -17,6 +17,10 @@ _start:
 .section .bss,"", at nobits
 .section .foo.a,"aw"
 .section .foo,"aw"
+.section .data.rel.ro,"aw",%progbits
+.section .data.rel.ro.a,"aw",%progbits
+.section .data.rel.ro.local,"aw",%progbits
+.section .data.rel.ro.local.a,"aw",%progbits
 
 // CHECK-NOT: Name: .rodata.a
 // CHECK:     Name: .rodata
@@ -26,5 +30,8 @@ _start:
 // CHECK:     Name: .data
 // CHECK:     Name: .foo.a
 // CHECK:     Name: .foo
+// CHECK-NOT: Name: .data.rel.ro.a
+// CHECK-NOT: Name: .data.rel.ro.local.a
+// CHECK:     Name: .data.rel.ro
 // CHECK-NOT: Name: .bss.a
 // CHECK:     Name: .bss