[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.

llvm-svn: 238038

1 files changed, 3 insertions, 1 deletions

diff --git a/llvm/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp b/llvm/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp
index 8393135a2b9..48f34e48459 100644
--- a/llvm/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp
+++ b/llvm/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp
@@ -68,7 +68,9 @@ void BPFAsmBackend::applyFixup(const MCFixup &Fixup, char *Data,
     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 {