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This commit is contained in:
Thomas Harte 2022-03-11 20:30:56 -05:00
parent 44252984c2
commit c22e8112e7
1 changed files with 10 additions and 4 deletions
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14
InstructionSets/x86/Instruction.hpp
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@ -311,18 +311,24 @@ enum class Operation: uint8_t {
/// [Early 80386s only] Insert bit string.
IBTS,
/// Inputs a double word from a port, incrementing or decrementing the destination.
/// Inputs a double word the port specified by DX, writing it to
/// ES:[e]DI and incrementing or decrementing [e]DI as per the
/// current EFLAGS DF flag.
INSD,
/// Convert dword to qword.
/// Convert dword to qword; fills EDX with the sign bit of EAX.
CDQ,
/// Convert word to dword; AX will be expanded to fill EAX.
/// Compare and contrast to CWD which would expand AX to DX:AX.
CWDE,
/// Move with zero extension.
/// Move from the source to the destination, extending the source with zeros.
/// The instruction data size dictates the size of the source; the destination will
/// be either 16- or 32-bit depending on the current processor operating mode.
MOVZX,
/// Move with sign extension.
/// Move from the source to the destination, applying a sign extension.
/// The instruction data size dictates the size of the source; the destination will
/// be either 16- or 32-bit depending on the current processor operating mode.
MOVSX,
/// Two-operand form of IMUL; multiply the source by the destination and write to the destination.