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-rw-r--r--llvm/lib/ObjectYAML/ELFEmitter.cpp4
-rw-r--r--llvm/test/tools/yaml2obj/elf-no-phdrs.yaml15
2 files changed, 17 insertions, 2 deletions
diff --git a/llvm/lib/ObjectYAML/ELFEmitter.cpp b/llvm/lib/ObjectYAML/ELFEmitter.cpp
index 362a9432568..e3dcd8ca077 100644
--- a/llvm/lib/ObjectYAML/ELFEmitter.cpp
+++ b/llvm/lib/ObjectYAML/ELFEmitter.cpp
@@ -224,10 +224,10 @@ void ELFState<ELFT>::writeELFHeader(ContiguousBlobAccumulator &CBA, raw_ostream
Header.e_machine = Doc.Header.Machine;
Header.e_version = EV_CURRENT;
Header.e_entry = Doc.Header.Entry;
- Header.e_phoff = sizeof(Header);
+ Header.e_phoff = Doc.ProgramHeaders.size() ? sizeof(Header) : 0;
Header.e_flags = Doc.Header.Flags;
Header.e_ehsize = sizeof(Elf_Ehdr);
- Header.e_phentsize = sizeof(Elf_Phdr);
+ Header.e_phentsize = Doc.ProgramHeaders.size() ? sizeof(Elf_Phdr) : 0;
Header.e_phnum = Doc.ProgramHeaders.size();
Header.e_shentsize =
diff --git a/llvm/test/tools/yaml2obj/elf-no-phdrs.yaml b/llvm/test/tools/yaml2obj/elf-no-phdrs.yaml
new file mode 100644
index 00000000000..e056b808e2f
--- /dev/null
+++ b/llvm/test/tools/yaml2obj/elf-no-phdrs.yaml
@@ -0,0 +1,15 @@
+## Check that e_phoff and e_phentsize are set to 0 when there are no
+## program headers.
+
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-readobj --file-headers %t | FileCheck %s
+
+# CHECK: ProgramHeaderOffset: 0x0{{$}}
+# CHECK: ProgramHeaderEntrySize: 0{{$}}
+
+--- !ELF
+FileHeader:
+ Class: ELFCLASS64
+ Data: ELFDATA2LSB
+ Type: ET_REL
+ Machine: EM_X86_64
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