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arm64: Verify offset is aligned.

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Unknown W. Brackets 2015-07-02 20:10:24 -07:00
parent 31a5227076
commit 3780b6c0a5
1 changed files with 7 additions and 3 deletions
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10
Common/Arm64Emitter.cpp
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@ -670,13 +670,17 @@ void ARM64XEmitter::EncodeLoadStoreIndexedInst(u32 op, ARM64Reg Rt, ARM64Reg Rn,
bool b64Bit = Is64Bit(Rt);
bool bVec = IsVector(Rt);
u8 shift = 0;
if (size == 64)
imm >>= 3;
shift = 3;
else if (size == 32)
imm >>= 2;
shift = 2;
else if (size == 16)
imm >>= 1;
shift = 1;
_assert_msg_(DYNA_REC, ((imm >> shift) << shift) == imm, "%s(INDEX_UNSIGNED): offset must be aligned %d", __FUNCTION__, imm);
imm >>= shift;
_assert_msg_(DYNA_REC, imm >= 0, "%s(INDEX_UNSIGNED): offset must be positive %d", __FUNCTION__, imm);
_assert_msg_(DYNA_REC, !(imm & ~0xFFF), "%s(INDEX_UNSIGNED): offset too large %d", __FUNCTION__, imm);