[llvm] r238038 - [bpf] emit jmp fixups in little endian

[Alexei Starovoitov]

Author: ast
Date: Fri May 22 13:47:33 2015
New Revision: 238038

URL: http://llvm.org/viewvc/llvm-project?rev=238038&view=rev
Log:
[bpf] emit jmp fixups in little endian

The 'off' field of 'struct bpf_insn' is in cpu-endianness,
since the rest is emitted as little endian, make sure
that 'off' field is little endian as well.

Modified:
    llvm/trunk/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp

Modified: llvm/trunk/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp?rev=238038&r1=238037&r2=238038&view=diff
==============================================================================
--- llvm/trunk/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp (original)
+++ llvm/trunk/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp Fri May 22 13:47:33 2015
@@ -68,7 +68,9 @@ void BPFAsmBackend::applyFixup(const MCF
     return;
   }
   assert(Fixup.getKind() == FK_PCRel_2);
-  *(uint16_t *)&Data[Fixup.getOffset() + 2] = (uint16_t)((Value - 8) / 8);
+  Value = (uint16_t)((Value - 8) / 8);
+  Data[Fixup.getOffset() + 2] = Value & 0xFF;
+  Data[Fixup.getOffset() + 3] = Value >> 8;
 }
 
 MCObjectWriter *BPFAsmBackend::createObjectWriter(raw_pwrite_stream &OS) const {