[yaml2obj] Initial ELF support.

Currently, only emitting the ELF header is supported (no sections or
segments).

The ELFYAML code organization is broadly similar to the COFFYAML code.

llvm-svn: 183711

7 files changed, 79 insertions, 0 deletions

diff --git a/llvm/test/Object/Inputs/ELF/BE32.yaml b/llvm/test/Object/Inputs/ELF/BE32.yaml
new file mode 100644
index 00000000000..3709ff70cd3
--- /dev/null
+++ b/llvm/test/Object/Inputs/ELF/BE32.yaml
@@ -0,0 +1,6 @@
+!ELF
+Header: !Header
+  Class: ELFCLASS32
+  Data: ELFDATA2MSB
+  Type: ET_EXEC
+  Machine: EM_PPC
diff --git a/llvm/test/Object/Inputs/ELF/BE64.yaml b/llvm/test/Object/Inputs/ELF/BE64.yaml
new file mode 100644
index 00000000000..d1c4401c0c0
--- /dev/null
+++ b/llvm/test/Object/Inputs/ELF/BE64.yaml
@@ -0,0 +1,6 @@
+!ELF
+Header: !Header
+  Class: ELFCLASS64
+  Data: ELFDATA2MSB
+  Type: ET_EXEC
+  Machine: EM_PPC64
diff --git a/llvm/test/Object/Inputs/ELF/Header.yaml b/llvm/test/Object/Inputs/ELF/Header.yaml
new file mode 100644
index 00000000000..085b12077d9
--- /dev/null
+++ b/llvm/test/Object/Inputs/ELF/Header.yaml
@@ -0,0 +1,7 @@
+!ELF
+Header: !Header
+  Class: ELFCLASS64
+  Data: ELFDATA2LSB
+  Type: ET_EXEC
+  Machine: EM_X86_64
+  Entry: 0x400000
diff --git a/llvm/test/Object/Inputs/ELF/LE32.yaml b/llvm/test/Object/Inputs/ELF/LE32.yaml
new file mode 100644
index 00000000000..a4f30fbb803
--- /dev/null
+++ b/llvm/test/Object/Inputs/ELF/LE32.yaml
@@ -0,0 +1,6 @@
+!ELF
+Header: !Header
+  Class: ELFCLASS32
+  Data: ELFDATA2LSB
+  Type: ET_EXEC
+  Machine: EM_386
diff --git a/llvm/test/Object/Inputs/ELF/LE64.yaml b/llvm/test/Object/Inputs/ELF/LE64.yaml
new file mode 100644
index 00000000000..cd0ca2545b9
--- /dev/null
+++ b/llvm/test/Object/Inputs/ELF/LE64.yaml
@@ -0,0 +1,6 @@
+!ELF
+Header: !Header
+  Class: ELFCLASS64
+  Data: ELFDATA2LSB
+  Type: ET_EXEC
+  Machine: EM_X86_64
diff --git a/llvm/test/Object/yaml2obj-elf-basic.test b/llvm/test/Object/yaml2obj-elf-basic.test
new file mode 100644
index 00000000000..e97ad2013bf
--- /dev/null
+++ b/llvm/test/Object/yaml2obj-elf-basic.test
@@ -0,0 +1,32 @@
+RUN: yaml2obj -format=elf %p/Inputs/ELF/Header.yaml | llvm-readobj -file-headers - | FileCheck %s
+
+// CHECK:      File: <stdin>
+// CHECK-NEXT: Format: ELF64-x86-64
+// CHECK-NEXT: Arch: x86_64
+// CHECK-NEXT: AddressSize: 64bit
+// CHECK-NEXT: LoadName:
+// CHECK-NEXT: ElfHeader {
+// CHECK-NEXT:   Ident {
+// CHECK-NEXT:     Magic: (7F 45 4C 46)
+// CHECK-NEXT:     Class: 64-bit (0x2)
+// CHECK-NEXT:     DataEncoding: LittleEndian (0x1)
+// CHECK-NEXT:     FileVersion: 1
+// CHECK-NEXT:     OS/ABI: SystemV (0x0)
+// CHECK-NEXT:     ABIVersion: 0
+// CHECK-NEXT:     Unused: (00 00 00 00 00 00 00)
+// CHECK-NEXT:   }
+// CHECK-NEXT:   Type: Executable (0x2)
+// CHECK-NEXT:   Machine: EM_X86_64 (0x3E)
+// CHECK-NEXT:   Version: 1
+// CHECK-NEXT:   Entry: 0x400000
+// CHECK-NEXT:   ProgramHeaderOffset: 0x0
+// CHECK-NEXT:   SectionHeaderOffset: 0x0
+// CHECK-NEXT:   Flags [ (0x0)
+// CHECK-NEXT:   ]
+// CHECK-NEXT:   HeaderSize: 64
+// CHECK-NEXT:   ProgramHeaderEntrySize: 0
+// CHECK-NEXT:   ProgramHeaderCount: 0
+// CHECK-NEXT:   SectionHeaderEntrySize: 0
+// CHECK-NEXT:   SectionHeaderCount: 0
+// CHECK-NEXT:   StringTableSectionIndex: 0
+// CHECK-NEXT: }
diff --git a/llvm/test/Object/yaml2obj-elf-bits-endian.test b/llvm/test/Object/yaml2obj-elf-bits-endian.test
new file mode 100644
index 00000000000..4be9a4465b8
--- /dev/null
+++ b/llvm/test/Object/yaml2obj-elf-bits-endian.test
@@ -0,0 +1,16 @@
+RUN: yaml2obj -format=elf %p/Inputs/ELF/LE64.yaml | llvm-readobj -file-headers - | FileCheck %s --check-prefix LE64
+RUN: yaml2obj -format=elf %p/Inputs/ELF/BE64.yaml | llvm-readobj -file-headers - | FileCheck %s --check-prefix BE64
+RUN: yaml2obj -format=elf %p/Inputs/ELF/LE32.yaml | llvm-readobj -file-headers - | FileCheck %s --check-prefix LE32
+RUN: yaml2obj -format=elf %p/Inputs/ELF/BE32.yaml | llvm-readobj -file-headers - | FileCheck %s --check-prefix BE32
+
+LE64:      Class: 64-bit (0x2)
+LE64-NEXT: DataEncoding: LittleEndian (0x1)
+
+BE64:      Class: 64-bit (0x2)
+BE64-NEXT: DataEncoding: BigEndian (0x2)
+
+LE32:      Class: 32-bit (0x1)
+LE32-NEXT: DataEncoding: LittleEndian (0x1)
+
+BE32:      Class: 32-bit (0x1)
+BE32-NEXT: DataEncoding: BigEndian (0x2)