diff options
Diffstat (limited to 'lldb/source/Plugins/Process/Utility/InstructionUtils.h')
-rw-r--r-- | lldb/source/Plugins/Process/Utility/InstructionUtils.h | 138 |
1 files changed, 57 insertions, 81 deletions
diff --git a/lldb/source/Plugins/Process/Utility/InstructionUtils.h b/lldb/source/Plugins/Process/Utility/InstructionUtils.h index 6226fbc04b0..e422a96200c 100644 --- a/lldb/source/Plugins/Process/Utility/InstructionUtils.h +++ b/lldb/source/Plugins/Process/Utility/InstructionUtils.h @@ -16,123 +16,99 @@ namespace lldb_private { // Return the bit field(s) from the most significant bit (msbit) to the // least significant bit (lsbit) of a 64-bit unsigned value. -static inline uint64_t -Bits64 (const uint64_t bits, const uint32_t msbit, const uint32_t lsbit) -{ - assert(msbit < 64 && lsbit <= msbit); - return (bits >> lsbit) & ((1ull << (msbit - lsbit + 1)) - 1); +static inline uint64_t Bits64(const uint64_t bits, const uint32_t msbit, + const uint32_t lsbit) { + assert(msbit < 64 && lsbit <= msbit); + return (bits >> lsbit) & ((1ull << (msbit - lsbit + 1)) - 1); } // Return the bit field(s) from the most significant bit (msbit) to the // least significant bit (lsbit) of a 32-bit unsigned value. -static inline uint32_t -Bits32 (const uint32_t bits, const uint32_t msbit, const uint32_t lsbit) -{ - assert(msbit < 32 && lsbit <= msbit); - return (bits >> lsbit) & ((1u << (msbit - lsbit + 1)) - 1); +static inline uint32_t Bits32(const uint32_t bits, const uint32_t msbit, + const uint32_t lsbit) { + assert(msbit < 32 && lsbit <= msbit); + return (bits >> lsbit) & ((1u << (msbit - lsbit + 1)) - 1); } // Return the bit value from the 'bit' position of a 32-bit unsigned value. -static inline uint32_t -Bit32 (const uint32_t bits, const uint32_t bit) -{ - return (bits >> bit) & 1u; +static inline uint32_t Bit32(const uint32_t bits, const uint32_t bit) { + return (bits >> bit) & 1u; } -static inline uint64_t -Bit64 (const uint64_t bits, const uint32_t bit) -{ - return (bits >> bit) & 1ull; +static inline uint64_t Bit64(const uint64_t bits, const uint32_t bit) { + return (bits >> bit) & 1ull; } // Set the bit field(s) from the most significant bit (msbit) to the // least significant bit (lsbit) of a 32-bit unsigned value to 'val'. -static inline void -SetBits32(uint32_t &bits, const uint32_t msbit, const uint32_t lsbit, const uint32_t val) -{ - assert(msbit < 32 && lsbit < 32 && msbit >= lsbit); - uint32_t mask = ((1u << (msbit - lsbit + 1)) - 1); - bits &= ~(mask << lsbit); - bits |= (val & mask) << lsbit; +static inline void SetBits32(uint32_t &bits, const uint32_t msbit, + const uint32_t lsbit, const uint32_t val) { + assert(msbit < 32 && lsbit < 32 && msbit >= lsbit); + uint32_t mask = ((1u << (msbit - lsbit + 1)) - 1); + bits &= ~(mask << lsbit); + bits |= (val & mask) << lsbit; } // Set the 'bit' position of a 32-bit unsigned value to 'val'. -static inline void -SetBit32(uint32_t &bits, const uint32_t bit, const uint32_t val) -{ - SetBits32(bits, bit, bit, val); +static inline void SetBit32(uint32_t &bits, const uint32_t bit, + const uint32_t val) { + SetBits32(bits, bit, bit, val); } // Rotate a 32-bit unsigned value right by the specified amount. -static inline uint32_t -Rotr32 (uint32_t bits, uint32_t amt) -{ - assert(amt < 32 && "Invalid rotate amount"); - return (bits >> amt) | (bits << ((32-amt)&31)); +static inline uint32_t Rotr32(uint32_t bits, uint32_t amt) { + assert(amt < 32 && "Invalid rotate amount"); + return (bits >> amt) | (bits << ((32 - amt) & 31)); } // Rotate a 32-bit unsigned value left by the specified amount. -static inline uint32_t -Rotl32 (uint32_t bits, uint32_t amt) -{ - assert(amt < 32 && "Invalid rotate amount"); - return (bits << amt) | (bits >> ((32-amt)&31)); +static inline uint32_t Rotl32(uint32_t bits, uint32_t amt) { + assert(amt < 32 && "Invalid rotate amount"); + return (bits << amt) | (bits >> ((32 - amt) & 31)); } // Create a mask that starts at bit zero and includes "bit" -static inline uint64_t -MaskUpToBit (const uint64_t bit) -{ - if (bit >= 63) - return -1ll; - return (1ull << (bit + 1ull)) - 1ull; +static inline uint64_t MaskUpToBit(const uint64_t bit) { + if (bit >= 63) + return -1ll; + return (1ull << (bit + 1ull)) - 1ull; } // Return an integer result equal to the number of bits of x that are ones. -static inline uint32_t -BitCount (uint64_t x) -{ - // c accumulates the total bits set in x - uint32_t c; - for (c = 0; x; ++c) - { - x &= x - 1; // clear the least significant bit set - } - return c; +static inline uint32_t BitCount(uint64_t x) { + // c accumulates the total bits set in x + uint32_t c; + for (c = 0; x; ++c) { + x &= x - 1; // clear the least significant bit set + } + return c; } -static inline bool -BitIsSet (const uint64_t value, const uint64_t bit) -{ - return (value & (1ull << bit)) != 0; +static inline bool BitIsSet(const uint64_t value, const uint64_t bit) { + return (value & (1ull << bit)) != 0; } -static inline bool -BitIsClear (const uint64_t value, const uint64_t bit) -{ - return (value & (1ull << bit)) == 0; +static inline bool BitIsClear(const uint64_t value, const uint64_t bit) { + return (value & (1ull << bit)) == 0; } -static inline uint64_t -UnsignedBits (const uint64_t value, const uint64_t msbit, const uint64_t lsbit) -{ - uint64_t result = value >> lsbit; - result &= MaskUpToBit (msbit - lsbit); - return result; +static inline uint64_t UnsignedBits(const uint64_t value, const uint64_t msbit, + const uint64_t lsbit) { + uint64_t result = value >> lsbit; + result &= MaskUpToBit(msbit - lsbit); + return result; } -static inline int64_t -SignedBits (const uint64_t value, const uint64_t msbit, const uint64_t lsbit) -{ - uint64_t result = UnsignedBits (value, msbit, lsbit); - if (BitIsSet(value, msbit)) - { - // Sign extend - result |= ~MaskUpToBit (msbit - lsbit); - } - return result; +static inline int64_t SignedBits(const uint64_t value, const uint64_t msbit, + const uint64_t lsbit) { + uint64_t result = UnsignedBits(value, msbit, lsbit); + if (BitIsSet(value, msbit)) { + // Sign extend + result |= ~MaskUpToBit(msbit - lsbit); + } + return result; } -} // namespace lldb_private +} // namespace lldb_private -#endif // lldb_InstructionUtils_h_ +#endif // lldb_InstructionUtils_h_ |