From c84c742eddc0c57c34271471f332c9857d79e672 Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <simon@atanasyan.com>
Date: Mon, 7 Oct 2013 08:58:27 +0000
Subject: [Mips] Teach llvm-readobj to print MIPS-specific ELF program headers.

The patch reviewed by Michael Spencer.
http://llvm-reviews.chandlerc.com/D1846

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192093 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llvm-readobj/ELFDumper.cpp | 59 ++++++++++++++++++++++++++--------------
 1 file changed, 38 insertions(+), 21 deletions(-)

(limited to 'tools/llvm-readobj/ELFDumper.cpp')

diff --git a/tools/llvm-readobj/ELFDumper.cpp b/tools/llvm-readobj/ELFDumper.cpp
index ffa0e01425..f384824d5e 100644
--- a/tools/llvm-readobj/ELFDumper.cpp
+++ b/tools/llvm-readobj/ELFDumper.cpp
@@ -391,26 +391,41 @@ static const EnumEntry<unsigned> ElfSectionFlags[] = {
   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP    )
 };
 
-static const EnumEntry<unsigned> ElfSegmentTypes[] = {
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_NULL   ),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_LOAD   ),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_DYNAMIC),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_INTERP ),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_NOTE   ),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_SHLIB  ),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_PHDR   ),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_TLS    ),
-
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_GNU_EH_FRAME),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_SUNW_EH_FRAME),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_SUNW_UNWIND),
-
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_GNU_STACK),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_GNU_RELRO),
-
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_ARM_EXIDX),
-  LLVM_READOBJ_ENUM_ENT(ELF, PT_ARM_UNWIND)
-};
+static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
+  // Check potentially overlapped processor-specific
+  // program header type.
+  switch (Arch) {
+  case ELF::EM_ARM:
+    switch (Type) {
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX);
+    }
+  case ELF::EM_MIPS:
+  case ELF::EM_MIPS_RS3_LE:
+    switch (Type) {
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
+    }
+  }
+
+  switch (Type) {
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL   );
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD   );
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE   );
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB  );
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR   );
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS    );
+
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
+
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
+  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
+  default: return "";
+  }
+}
 
 static const EnumEntry<unsigned> ElfSegmentFlags[] = {
   LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
@@ -790,7 +805,9 @@ void ELFDumper<ELFT>::printProgramHeaders() {
                                     PE = Obj->end_program_headers();
                                     PI != PE; ++PI) {
     DictScope P(W, "ProgramHeader");
-    W.printEnum  ("Type", PI->p_type, makeArrayRef(ElfSegmentTypes));
+    W.printHex   ("Type",
+                  getElfSegmentType(Obj->getHeader()->e_machine, PI->p_type),
+                  PI->p_type);
     W.printHex   ("Offset", PI->p_offset);
     W.printHex   ("VirtualAddress", PI->p_vaddr);
     W.printHex   ("PhysicalAddress", PI->p_paddr);
-- 
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