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author | Reid Spencer <rspencer@reidspencer.com> | 2007-01-18 01:24:02 +0000 |
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committer | Reid Spencer <rspencer@reidspencer.com> | 2007-01-18 01:24:02 +0000 |
commit | f89aec655f220fdd70e39fcb8d16943694b85903 (patch) | |
tree | b1a22b7fa9221a6b66a9cd67aff6a0d01c7589e8 /lib/ExecutionEngine/ExecutionEngine.cpp | |
parent | c904a5b925ce9981ad7501b14ee39cbc8795e23c (diff) | |
download | external_llvm-f89aec655f220fdd70e39fcb8d16943694b85903.zip external_llvm-f89aec655f220fdd70e39fcb8d16943694b85903.tar.gz external_llvm-f89aec655f220fdd70e39fcb8d16943694b85903.tar.bz2 |
Make sure we truncate stored values to their bit width.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33317 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/ExecutionEngine/ExecutionEngine.cpp')
-rw-r--r-- | lib/ExecutionEngine/ExecutionEngine.cpp | 70 |
1 files changed, 40 insertions, 30 deletions
diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp index 26f51d0..2cb4a8e 100644 --- a/lib/ExecutionEngine/ExecutionEngine.cpp +++ b/lib/ExecutionEngine/ExecutionEngine.cpp @@ -456,25 +456,30 @@ void ExecutionEngine::StoreValueToMemory(GenericValue Val, GenericValue *Ptr, switch (Ty->getTypeID()) { case Type::IntegerTyID: { unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth(); + uint64_t BitMask = (1ull << BitWidth) - 1; + GenericValue TmpVal = Val; if (BitWidth <= 8) - Ptr->Untyped[0] = Val.Int8Val; + Ptr->Untyped[0] = Val.Int8Val & BitMask; else if (BitWidth <= 16) { - Ptr->Untyped[0] = Val.Int16Val & 255; - Ptr->Untyped[1] = (Val.Int16Val >> 8) & 255; + TmpVal.Int16Val &= BitMask; + Ptr->Untyped[0] = TmpVal.Int16Val & 255; + Ptr->Untyped[1] = (TmpVal.Int16Val >> 8) & 255; } else if (BitWidth <= 32) { - Ptr->Untyped[0] = Val.Int32Val & 255; - Ptr->Untyped[1] = (Val.Int32Val >> 8) & 255; - Ptr->Untyped[2] = (Val.Int32Val >> 16) & 255; - Ptr->Untyped[3] = (Val.Int32Val >> 24) & 255; + TmpVal.Int32Val &= BitMask; + Ptr->Untyped[0] = TmpVal.Int32Val & 255; + Ptr->Untyped[1] = (TmpVal.Int32Val >> 8) & 255; + Ptr->Untyped[2] = (TmpVal.Int32Val >> 16) & 255; + Ptr->Untyped[3] = (TmpVal.Int32Val >> 24) & 255; } else if (BitWidth <= 64) { - Ptr->Untyped[0] = (unsigned char)(Val.Int64Val ); - Ptr->Untyped[1] = (unsigned char)(Val.Int64Val >> 8); - Ptr->Untyped[2] = (unsigned char)(Val.Int64Val >> 16); - Ptr->Untyped[3] = (unsigned char)(Val.Int64Val >> 24); - Ptr->Untyped[4] = (unsigned char)(Val.Int64Val >> 32); - Ptr->Untyped[5] = (unsigned char)(Val.Int64Val >> 40); - Ptr->Untyped[6] = (unsigned char)(Val.Int64Val >> 48); - Ptr->Untyped[7] = (unsigned char)(Val.Int64Val >> 56); + TmpVal.Int64Val &= BitMask; + Ptr->Untyped[0] = (unsigned char)(TmpVal.Int64Val ); + Ptr->Untyped[1] = (unsigned char)(TmpVal.Int64Val >> 8); + Ptr->Untyped[2] = (unsigned char)(TmpVal.Int64Val >> 16); + Ptr->Untyped[3] = (unsigned char)(TmpVal.Int64Val >> 24); + Ptr->Untyped[4] = (unsigned char)(TmpVal.Int64Val >> 32); + Ptr->Untyped[5] = (unsigned char)(TmpVal.Int64Val >> 40); + Ptr->Untyped[6] = (unsigned char)(TmpVal.Int64Val >> 48); + Ptr->Untyped[7] = (unsigned char)(TmpVal.Int64Val >> 56); } else assert(0 && "Integer types > 64 bits not supported"); break; @@ -507,25 +512,30 @@ Store4BytesLittleEndian: switch (Ty->getTypeID()) { case Type::IntegerTyID: { unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth(); + uint64_t BitMask = (1ull << BitWidth) - 1; + GenericValue TmpVal = Val; if (BitWidth <= 8) - Ptr->Untyped[0] = Val.Int8Val; + Ptr->Untyped[0] = Val.Int8Val & BitMask; else if (BitWidth <= 16) { - Ptr->Untyped[1] = Val.Int16Val & 255; - Ptr->Untyped[0] = (Val.Int16Val >> 8) & 255; + TmpVal.Int16Val &= BitMask; + Ptr->Untyped[1] = TmpVal.Int16Val & 255; + Ptr->Untyped[0] = (TmpVal.Int16Val >> 8) & 255; } else if (BitWidth <= 32) { - Ptr->Untyped[3] = Val.Int32Val & 255; - Ptr->Untyped[2] = (Val.Int32Val >> 8) & 255; - Ptr->Untyped[1] = (Val.Int32Val >> 16) & 255; - Ptr->Untyped[0] = (Val.Int32Val >> 24) & 255; + TmpVal.Int32Val &= BitMask; + Ptr->Untyped[3] = TmpVal.Int32Val & 255; + Ptr->Untyped[2] = (TmpVal.Int32Val >> 8) & 255; + Ptr->Untyped[1] = (TmpVal.Int32Val >> 16) & 255; + Ptr->Untyped[0] = (TmpVal.Int32Val >> 24) & 255; } else if (BitWidth <= 64) { - Ptr->Untyped[7] = (unsigned char)(Val.Int64Val ); - Ptr->Untyped[6] = (unsigned char)(Val.Int64Val >> 8); - Ptr->Untyped[5] = (unsigned char)(Val.Int64Val >> 16); - Ptr->Untyped[4] = (unsigned char)(Val.Int64Val >> 24); - Ptr->Untyped[3] = (unsigned char)(Val.Int64Val >> 32); - Ptr->Untyped[2] = (unsigned char)(Val.Int64Val >> 40); - Ptr->Untyped[1] = (unsigned char)(Val.Int64Val >> 48); - Ptr->Untyped[0] = (unsigned char)(Val.Int64Val >> 56); + TmpVal.Int64Val &= BitMask; + Ptr->Untyped[7] = (unsigned char)(TmpVal.Int64Val ); + Ptr->Untyped[6] = (unsigned char)(TmpVal.Int64Val >> 8); + Ptr->Untyped[5] = (unsigned char)(TmpVal.Int64Val >> 16); + Ptr->Untyped[4] = (unsigned char)(TmpVal.Int64Val >> 24); + Ptr->Untyped[3] = (unsigned char)(TmpVal.Int64Val >> 32); + Ptr->Untyped[2] = (unsigned char)(TmpVal.Int64Val >> 40); + Ptr->Untyped[1] = (unsigned char)(TmpVal.Int64Val >> 48); + Ptr->Untyped[0] = (unsigned char)(TmpVal.Int64Val >> 56); } else assert(0 && "Integer types > 64 bits not supported"); break; |