From a758825238b44774f974f3760d80b44c3ca78480 Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <simon@atanasyan.com>
Date: Thu, 1 May 2014 11:07:19 +0000
Subject: [PATCH] [llvm-readobj] Add support for Mips specific ELF header
 e_flags.

llvm-svn: 207744
---
 ...aml2obj-elf-file-headers-with-e_flags.yaml |  9 +++---
 tools/llvm-readobj/ELFDumper.cpp              | 30 ++++++++++++++++++-
 2 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/test/Object/yaml2obj-elf-file-headers-with-e_flags.yaml b/test/Object/yaml2obj-elf-file-headers-with-e_flags.yaml
index 19cc91e235c..7d098077dd5 100644
--- a/test/Object/yaml2obj-elf-file-headers-with-e_flags.yaml
+++ b/test/Object/yaml2obj-elf-file-headers-with-e_flags.yaml
@@ -5,12 +5,13 @@ FileHeader:
   Data: ELFDATA2LSB
   Type: ET_REL
   Machine: EM_MIPS
-  Flags: [ EF_MIPS_NOREORDER, EF_MIPS_ABI_O32 ]
+  Flags: [ EF_MIPS_NOREORDER, EF_MIPS_ABI_O32, EF_MIPS_ARCH_32R2 ]
 
 # CHECK: Format: ELF32-mips
 # CHECK: Arch: mipsel
 # CHECK: Machine: EM_MIPS
-# CHECK: Flags [ (0x1001)
-# CHECK-NEXT: 0x1
-# CHECK-NEXT: 0x1000
+# CHECK: Flags [ (0x70001001)
+# CHECK-NEXT: EF_MIPS_ABI_O32 (0x1000)
+# CHECK-NEXT: EF_MIPS_ARCH_32R2 (0x70000000)
+# CHECK-NEXT: EF_MIPS_NOREORDER (0x1)
 # CHECK-NEXT: ]
diff --git a/tools/llvm-readobj/ELFDumper.cpp b/tools/llvm-readobj/ELFDumper.cpp
index ab898327ca2..21f9866035f 100644
--- a/tools/llvm-readobj/ELFDumper.cpp
+++ b/tools/llvm-readobj/ELFDumper.cpp
@@ -437,6 +437,27 @@ static const EnumEntry<unsigned> ElfSegmentFlags[] = {
   LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
 };
 
+static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2)
+};
+
 template<class ELFT>
 void ELFDumper<ELFT>::printFileHeaders() {
   const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
@@ -464,7 +485,14 @@ void ELFDumper<ELFT>::printFileHeaders() {
     W.printHex   ("Entry", Header->e_entry);
     W.printHex   ("ProgramHeaderOffset", Header->e_phoff);
     W.printHex   ("SectionHeaderOffset", Header->e_shoff);
-    W.printFlags ("Flags", Header->e_flags);
+    switch (Header->e_machine) {
+    case EM_MIPS:
+      W.printFlags("Flags", Header->e_flags, makeArrayRef(ElfHeaderMipsFlags),
+                   unsigned(ELF::EF_MIPS_ARCH));
+      break;
+    default:
+      W.printFlags("Flags", Header->e_flags);
+    }
     W.printNumber("HeaderSize", Header->e_ehsize);
     W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize);
     W.printNumber("ProgramHeaderCount", Header->e_phnum);