[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

llvm-svn: 253018

2 files changed, 9 insertions, 0 deletions

diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index 975a21628e2..fe744b2b053 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -491,6 +491,8 @@ StringRef Writer<ELFT>::getOutputSectionName(StringRef S) const {
     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."))
diff --git a/lld/test/elf2/section-name.s b/lld/test/elf2/section-name.s
index 783dfa99ad6..d9e3efedf75 100644
--- a/lld/test/elf2/section-name.s
+++ b/lld/test/elf2/section-name.s
@@ -17,6 +17,10 @@ _start:
 .section .bss,"",@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