From 1644c2608f482c33ede9aa124e454515bc75389f Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@freebsd.org>
Date: Mon, 3 Mar 2014 14:27:49 +0000
Subject: [PATCH] [mips] support FK_Data_2 and FK_Data_8 to fix big-endian
 debug data

This fixes invalid lengths in .debug_aranges on big-endian mips64
(lengths appear to be left-shifted by 32 bits) and in .debug_loc.

Differential Revision: http://llvm-reviews.chandlerc.com/D2517

llvm-svn: 202716
---
 .../Mips/MCTargetDesc/MipsAsmBackend.cpp      |  4 ++
 test/MC/Mips/mips64eb-fixups.s                | 43 +++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 test/MC/Mips/mips64eb-fixups.s

diff --git a/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp b/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
index da332378bb1..dfaa4db50d9 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
@@ -38,6 +38,7 @@ static unsigned adjustFixupValue(const MCFixup &Fixup, uint64_t Value,
   switch (Kind) {
   default:
     return 0;
+  case FK_Data_2:
   case FK_GPRel_4:
   case FK_Data_4:
   case FK_Data_8:
@@ -140,12 +141,15 @@ public:
     unsigned FullSize;
 
     switch ((unsigned)Kind) {
+    case FK_Data_2:
     case Mips::fixup_Mips_16:
       FullSize = 2;
       break;
+    case FK_Data_8:
     case Mips::fixup_Mips_64:
       FullSize = 8;
       break;
+    case FK_Data_4:
     default:
       FullSize = 4;
       break;
diff --git a/test/MC/Mips/mips64eb-fixups.s b/test/MC/Mips/mips64eb-fixups.s
new file mode 100644
index 00000000000..1ca8b0ae529
--- /dev/null
+++ b/test/MC/Mips/mips64eb-fixups.s
@@ -0,0 +1,43 @@
+# RUN: llvm-mc -filetype=obj -triple mips64eb-unknown-freebsd %s -o - | llvm-readobj -s -sd | FileCheck %s
+
+        .section        .fixups,"",@progbits
+        .byte   0xff
+$diff0 = ($loc1)-($loc0)
+        .2byte   ($diff0)
+
+        .byte   0xff
+$diff1 = ($loc2)-($loc0)
+        .4byte  ($diff1)
+
+        .byte   0xff
+$diff2 = ($loc3)-($loc0)
+        .8byte  ($diff2)
+        .byte   0xff
+
+$loc0:
+        .byte   0xee
+$loc1:
+        .byte   0xdd
+$loc2:
+        .byte   0xcc
+$loc3:
+
+# CHECK:	AddressSize: 64bit
+# CHECK:	  Section {
+# CHECK:	    Name: .fixups (12)
+# CHECK-NEXT:	    Type: SHT_PROGBITS (0x1)
+# CHECK-NEXT:	    Flags [ (0x0)
+# CHECK-NEXT:	    ]
+# CHECK-NEXT:	    Address: 0x0
+# CHECK-NEXT:	    Offset: 0x40
+# CHECK-NEXT:	    Size: 21
+# CHECK-NEXT:	    Link: 0
+# CHECK-NEXT:	    Info: 0
+# CHECK-NEXT:	    AddressAlignment: 1
+# CHECK-NEXT:	    EntrySize: 0
+# CHECK-NEXT:	    SectionData (
+# CHECK-NEXT:	      0000: FF0001FF 00000002 FF000000 00000000  |................|
+# CHECK-NEXT:	      0010: 03FFEEDD CC                          |.....|
+# CHECK-NEXT:	    )
+# CHECK-NEXT:	  }
+# CHECK:	]