Move file-header-flags.yaml to llvm/test/tools/yaml2obj

Add an obj2yaml eflags test

Author: aakanksha555

llvm/test/tools/obj2yaml/ELF/eflags.yaml

@@ -0,0 +1,31 @@
+## Check how obj2yaml dumps e_flags field.
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2MSB
+  Type:    ET_EXEC
+  Machine: EM_ARM
+  Flags:   [ [[FLAGS]] ]
+
+# RUN: yaml2obj -DFLAGS="EF_ARM_EABI_VER3" %s -o %t2
+# RUN: obj2yaml %t2 | FileCheck %s --check-prefix=FLAG
+
+# FLAG:      --- !ELF
+# FLAG-NEXT: FileHeader:
+# FLAG-NEXT:   Class:   ELFCLASS64
+# FLAG-NEXT:   Data:    ELFDATA2MSB
+# FLAG-NEXT:   Type:    ET_EXEC
+# FLAG-NEXT:   Machine: EM_ARM
+# FLAG-NEXT:   Flags:   [ EF_ARM_EABI_VER3 ]
+
+# RUN: yaml2obj -DFLAGS="EF_ARM_SOFT_FLOAT" %s -o %t3
+# RUN: obj2yaml %t3 | FileCheck %s --check-prefix=FLAG2
+
+# FLAG2:      --- !ELF
+# FLAG2-NEXT: FileHeader:
+# FLAG2-NEXT:   Class:   ELFCLASS64
+# FLAG2-NEXT:   Data:    ELFDATA2MSB
+# FLAG2-NEXT:   Type:    ET_EXEC
+# FLAG2-NEXT:   Machine: EM_ARM
+# FLAG2-NEXT:   Flags:   [ EF_ARM_SOFT_FLOAT, EF_ARM_EABI_UNKNOWN ]

llvm/test/tools/obj2yaml/ELF/file-header-flags.yaml

@@ -0,0 +1,25 @@
+## Test for FileHeader Flags
+## When FLAGS variable isn't defined, the e_flags value is 0,
+## otherwise it's the specified value
+
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-readobj -h %t | FileCheck %s --check-prefixes=NO-FLAG
+
+# RUN: yaml2obj %s -o %t -DFLAGS=[EF_ARM_EABI_VER5]
+# RUN: llvm-readobj -h %t | FileCheck %s --check-prefixes=FLAG
+
+!ELF
+FileHeader:
+  Class:           ELFCLASS32
+  Data:            ELFDATA2LSB
+  Type:            ET_EXEC
+  Machine:         EM_ARM
+  Flags:           [[FLAGS=<none>]]
+
+# NO-FLAG:         Flags [ (0x0)
+# NO-FLAG-NEXT:    ]
+
+# FLAG:            Flags [ (0x5000000)
+# FLAG-NEXT:         0x1000000
+# FLAG-NEXT:         0x4000000
+# FLAG-NEXT:       ]