[yaml2obj] - Allow specifying custom Link values for SHT_HASH section.
This allows setting any sh_link values for SHT_HASH sections.
Differential revision: https://reviews.llvm.org/D68214
llvm-svn: 373316
diff --git a/llvm/lib/ObjectYAML/ELFEmitter.cpp b/llvm/lib/ObjectYAML/ELFEmitter.cpp
index 5acb02a..1651d60 100644
--- a/llvm/lib/ObjectYAML/ELFEmitter.cpp
+++ b/llvm/lib/ObjectYAML/ELFEmitter.cpp
@@ -821,7 +821,7 @@
CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
unsigned Link = 0;
- if (SN2I.lookup(".dynsym", Link))
+ if (Section.Link.empty() && SN2I.lookup(".dynsym", Link))
SHeader.sh_link = Link;
if (Section.Content) {
diff --git a/llvm/test/tools/yaml2obj/elf-hash-section.yaml b/llvm/test/tools/yaml2obj/elf-hash-section.yaml
index 9995574..995c871 100644
--- a/llvm/test/tools/yaml2obj/elf-hash-section.yaml
+++ b/llvm/test/tools/yaml2obj/elf-hash-section.yaml
@@ -145,3 +145,35 @@
Sections:
- Name: .hash
Type: SHT_HASH
+
+## Check we can set any sh_link value with use of the "Link" tag.
+
+# RUN: yaml2obj --docnum=8 %s -o %t8
+# RUN: llvm-readobj --sections %t8 | FileCheck %s --check-prefix=LINK
+
+# LINK: Name: .hash1
+# LINK: Link:
+# LINK-SAME: 123
+
+# LINK: Name: .hash2
+# LINK: Link:
+# LINK-SAME: 1
+
+--- !ELF
+FileHeader:
+ Class: ELFCLASS32
+ Data: ELFDATA2LSB
+ Type: ET_DYN
+ Machine: EM_386
+Sections:
+ - Name: .hash1
+ Type: SHT_HASH
+ Content: ""
+ Link: 123
+ - Name: .hash2
+ Type: SHT_HASH
+ Content: ""
+ Link: .hash1
+## SHT_HASH is linked to dynamic symbol table by default if it exists.
+ - Name: .dynsym
+ Type: SHT_DYNSYM