diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2020-01-17 20:45:01 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2020-01-17 20:45:01 +0000 |
| commit | 706b4fc47bbc608932d3b491ae19a3b9cde9497b (patch) | |
| tree | 4adf86a776049cbf7f69a1929c4babcbbef925eb /lldb/source/Utility/RegisterValue.cpp | |
| parent | 7cc9cf2bf09f069cb2dd947ead05d0b54301fb71 (diff) | |
Notes
Diffstat (limited to 'lldb/source/Utility/RegisterValue.cpp')
| -rw-r--r-- | lldb/source/Utility/RegisterValue.cpp | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/lldb/source/Utility/RegisterValue.cpp b/lldb/source/Utility/RegisterValue.cpp index a01c35a2818e..36790f5d8efa 100644 --- a/lldb/source/Utility/RegisterValue.cpp +++ b/lldb/source/Utility/RegisterValue.cpp @@ -8,7 +8,6 @@ #include "lldb/Utility/RegisterValue.h" -#include "lldb/Utility/Args.h" #include "lldb/Utility/DataExtractor.h" #include "lldb/Utility/Scalar.h" #include "lldb/Utility/Status.h" @@ -330,6 +329,35 @@ static bool ParseVectorEncoding(const RegisterInfo *reg_info, return true; } +static bool UInt64ValueIsValidForByteSize(uint64_t uval64, + size_t total_byte_size) { + if (total_byte_size > 8) + return false; + + if (total_byte_size == 8) + return true; + + const uint64_t max = + (static_cast<uint64_t>(1) << static_cast<uint64_t>(total_byte_size * 8)) - + 1; + return uval64 <= max; +} + +static bool SInt64ValueIsValidForByteSize(int64_t sval64, + size_t total_byte_size) { + if (total_byte_size > 8) + return false; + + if (total_byte_size == 8) + return true; + + const int64_t max = (static_cast<int64_t>(1) + << static_cast<uint64_t>(total_byte_size * 8 - 1)) - + 1; + const int64_t min = ~(max); + return min <= sval64 && sval64 <= max; +} + Status RegisterValue::SetValueFromString(const RegisterInfo *reg_info, llvm::StringRef value_str) { Status error; @@ -368,7 +396,7 @@ Status RegisterValue::SetValueFromString(const RegisterInfo *reg_info, break; } - if (!Args::UInt64ValueIsValidForByteSize(uval64, byte_size)) { + if (!UInt64ValueIsValidForByteSize(uval64, byte_size)) { error.SetErrorStringWithFormat( "value 0x%" PRIx64 " is too large to fit in a %u byte unsigned integer value", @@ -397,7 +425,7 @@ Status RegisterValue::SetValueFromString(const RegisterInfo *reg_info, break; } - if (!Args::SInt64ValueIsValidForByteSize(ival64, byte_size)) { + if (!SInt64ValueIsValidForByteSize(ival64, byte_size)) { error.SetErrorStringWithFormat( "value 0x%" PRIx64 " is too large to fit in a %u byte signed integer value", |