[llvm] r202716 - [mips] support FK_Data_2 and FK_Data_8 to fix big-endian debug data

[Ed Maste]

Author: emaste
Date: Mon Mar  3 08:27:49 2014
New Revision: 202716

URL: http://llvm.org/viewvc/llvm-project?rev=202716&view=rev
Log:
[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

Added:
    llvm/trunk/test/MC/Mips/mips64eb-fixups.s
Modified:
    llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp

Modified: llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp?rev=202716&r1=202715&r2=202716&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp (original)
+++ llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp Mon Mar  3 08:27:49 2014
@@ -38,6 +38,7 @@ static unsigned adjustFixupValue(const M
   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;

Added: llvm/trunk/test/MC/Mips/mips64eb-fixups.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/mips64eb-fixups.s?rev=202716&view=auto
==============================================================================
--- llvm/trunk/test/MC/Mips/mips64eb-fixups.s (added)
+++ llvm/trunk/test/MC/Mips/mips64eb-fixups.s Mon Mar  3 08:27:49 2014
@@ -0,0 +1,43 @@
+# RUN: llvm-mc -filetype=obj -triple mips64eb-unknown-freebsd %s -o - | llvm-readobj -s -sd | FileCheck %s
+
+        .section        .fixups,"", at 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:	]