llvm-6502/lib/MC
Jack Carter 93ee286e8d The ELF relocation record format is different for N64
which many Mips 64 ABIs use than for O64 which many 
if not all other target ABIs use.

Most architectures have the following 64 bit relocation record format:

  typedef struct
  {
    Elf64_Addr   r_offset; /* Address of reference */
    Elf64_Xword  r_info;   /* Symbol index and type of relocation */
  } Elf64_Rel;

  typedef struct
  {
    Elf64_Addr    r_offset;
    Elf64_Xword   r_info;
    Elf64_Sxword  r_addend;
  } Elf64_Rela;

Whereas N64 has the following format:

  typedef struct
  {
    Elf64_Addr    r_offset;/* Address of reference */
    Elf64_Word  r_sym;     /* Symbol index */
    Elf64_Byte  r_ssym;    /* Special symbol */
    Elf64_Byte  r_type3;   /* Relocation type */
    Elf64_Byte  r_type2;   /* Relocation type */
    Elf64_Byte  r_type;    /* Relocation type */
  } Elf64_Rel;

  typedef struct
  {
    Elf64_Addr    r_offset;/* Address of reference */
    Elf64_Word  r_sym;     /* Symbol index */
    Elf64_Byte  r_ssym;    /* Special symbol */
    Elf64_Byte  r_type3;   /* Relocation type */
    Elf64_Byte  r_type2;   /* Relocation type */
    Elf64_Byte  r_type;    /* Relocation type */
    Elf64_Sxword  r_addend;
  } Elf64_Rela;

The structure is the same size, but the r_info data element 
is now 5 separate elements. Besides the content aspects, 
endian byte reordering will be different for the area with 
each element being endianized separately.

I treat this as generic and continue to pass r_type as 
an integer masking and unmasking the byte sized N64 
values for N64 mode. I've implemented this and it causes no 
affect on other current targets.

This passes make check.

Jack


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159299 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-27 22:28:30 +00:00
..
MCDisassembler Add accessors for all private members of DisasmContext. 2012-06-06 20:45:10 +00:00
MCParser Implement irpc. Extracted from a patch by the PaX team. I just added the test. 2012-06-16 18:03:25 +00:00
CMakeLists.txt
ELFObjectWriter.cpp The ELF relocation record format is different for N64 2012-06-27 22:28:30 +00:00
LLVMBuild.txt
MachObjectWriter.cpp Refactor data-in-code annotations. 2012-05-18 19:12:01 +00:00
Makefile
MCAsmBackend.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCAsmInfo.cpp Remove another duplicated variable. We only need one to tell us if the linker 2012-06-22 13:32:49 +00:00
MCAsmInfoCOFF.cpp Refactor data-in-code annotations. 2012-05-18 19:12:01 +00:00
MCAsmInfoDarwin.cpp Remove another duplicated variable. We only need one to tell us if the linker 2012-06-22 13:32:49 +00:00
MCAsmStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00
MCAssembler.cpp
MCAtom.cpp
MCCodeEmitter.cpp
MCCodeGenInfo.cpp
MCContext.cpp
MCDisassembler.cpp
MCDwarf.cpp Fix a FIXME: DwarfRequiresRelocationForSectionOffset is the same as 2012-06-22 13:24:07 +00:00
MCELF.cpp
MCELF.h
MCELFObjectTargetWriter.cpp The ELF relocation record format is different for N64 2012-06-27 22:28:30 +00:00
MCELFStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00
MCExpr.cpp Implement local-exec TLS on PowerPC. 2012-06-04 17:36:38 +00:00
MCInst.cpp
MCInstPrinter.cpp
MCInstrAnalysis.cpp
MCLabel.cpp
MCMachObjectTargetWriter.cpp
MCMachOStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00
MCModule.cpp
MCNullStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00
MCObjectFileInfo.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCObjectStreamer.cpp
MCObjectWriter.cpp
MCPureStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00
MCSection.cpp
MCSectionCOFF.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCSectionELF.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCSectionMachO.cpp
MCStreamer.cpp Refactor data-in-code annotations. 2012-05-18 19:12:01 +00:00
MCSubtargetInfo.cpp misched: Added MultiIssueItineraries. 2012-06-05 03:44:40 +00:00
MCSymbol.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
MCTargetAsmLexer.cpp
MCValue.cpp
MCWin64EH.cpp
SubtargetFeature.cpp Tidy up. Trailing whitespace. 2012-05-11 01:41:30 +00:00
WinCOFFObjectWriter.cpp
WinCOFFStreamer.cpp EmitZerofill should take a 64-bit size or else it's chopping off large zero-filled global. rdar://11729134 2012-06-22 20:14:46 +00:00