Base class representing an operand in AsmJit (non-default constructed version).
Contains no initialization code and can be used safely to define an array of operands that won't be initialized. This is a Operand base structure designed to be statically initialized, static const, or to be used by user code to define an array of operands without having them default initialized at construction time.
Tests whether the given id is a valid virtual register id. Since AsmJit supports both physical and virtual registers it must be able to distinguish between these two. The idea is that physical registers are always limited in size, so virtual identifiers start from kVirtIdMin and end at kVirtIdMax.
Converts a real-id into a packed-id that can be stored in Operand.
Converts a packed-id back to real-id.
Initializes the operand from other operand (used by operator overloads).
Resets the Operand to none.
None operand is defined the following way:
0.0.In other words, reset operands have all members set to zero. Reset operand must match the Operand state right after its construction. Alternatively, if you have an array of operands, you can simply use memset().
Tests whether this operand is the same as other.
Tests whether this operand is not the same as other.
Casts this operand to T type.
Casts this operand to T type (const).
Tests whether the operand is 100% equal to other operand.
This basically performs a binary comparison, if aby bit is different the operands are not equal.
Returns operand signature as unsigned 32-bit integer.
Signature is first 4 bytes of the operand data. It's used mostly for operand checking as it's much faster to check packed 4 bytes at once than having to check these bytes individually.
Tests whether the operand's signature matches the signature of the other operand.
Tests whether the operand's signature matches the given signature sign.
Sets the operand signature, see signature().
Improper use of set_signature() can lead to hard-to-debug errors.
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Returns the type of the operand, see OpType.
Tests whether the operand's type matches the given type.
Tests whether the operand is none (OperandType::kNone).
Tests whether the operand is a register (OperandType::kReg).
Tests whether the operand is a register-list.
Register-list is currently only used by 32-bit ARM architecture.
Tests whether the operand is a memory location (OperandType::kMem).
Tests whether the operand is an immediate (OperandType::kImm).
Tests whether the operand is a label (OperandType::kLabel).
Tests whether the operand is a register or memory.
This is useful on X86 and X86_64 architectures as many instructions support Reg/Mem operand combination. So if the user code works with just Operand, it's possible to check whether the operand is either a register or memory location with a single check.
Tests whether the operand is a register, register-list, or memory.
This is useful on 32-bit ARM architecture to check whether an operand references a register. It can be used in other architectures too, but it would work identically to is_reg_or_mem() as other architectures don't provide register lists.
Returns the operand id.
The value returned should be interpreted accordingly to the operand type:
0.0.new_label() or Globals::kInvalidId if the label is invalid or not initialized. Tests whether the operand is a physical register.
Tests whether the operand is a virtual register.
Tests whether the operand is a register matching the given register type.
Tests whether the operand is register and of register type reg_type and reg_id.
Tests whether the operand is a register of the provided register group reg_group.
Tests whether the operand is register and of register group reg_group and reg_id.
Tests whether the operand is a general purpose register of any type.
Tests whether the operand is a general purpose register of any type.
Tests whether the operand is a general purpose register of any type having the given id reg_id.
Tests whether the register is an 8-bit low or high general purpose register (X86|X86_64).
Tests whether the register is an 8-bit low or high general purpose register having the given id reg_id (X86|X86_64).
Tests whether the register is an 8-bit low general purpose register (X86|X86_64).
Tests whether the register is an 8-bit low general purpose register having the given id reg_id (X86|X86_64).
Tests whether the register is an 8-bit high general purpose register (X86|X86_64 only - AH, BH, CH, DH).
Tests whether the register is an 8-bit high general purpose register having the given id reg_id (X86|X86_64).
Tests whether the register is a 16-bit general purpose register (X86|X86_64).
Tests whether the register is a 16-bit general purpose register having the given id reg_id (X86|X86_64).
Tests whether the register is a 32-bit general purpose register.
Tests whether the register is a 32-bit general purpose register having the given id reg_id.
Tests whether the register is a 64-bit general purpose register.
Tests whether the register is a 64-bit general purpose register having the given id reg_id.
Tests whether the register is a vector register of any size.
Tests whether the register is a vector register of any size having the given id reg_id.
Tests whether the register is an 8-bit vector register or view (AArch64).
Tests whether the register is an 8-bit vector register or view having the given id reg_id (AArch64).
Tests whether the register is a 16-bit vector register or view (AArch64).
Tests whether the register is a 16-bit vector register or view having the given id reg_id (AArch64).
Tests whether the register is a 32-bit vector register or view (AArch32, AArch64).
Tests whether the register is a 32-bit vector register or view having the given id reg_id (AArch32/AArch64).
Tests whether the register is a 64-bit vector register or view (AArch32/AArch64).
Tests whether the register is a 64-bit vector register or view having the given id reg_id (AArch32/AArch64).
Tests whether the register is a 128-bit vector register or view (X86|X86_64/AArch32/AArch64).
Tests whether the register is a 128-bit vector register or view having the given id reg_id (X86|X86_64/AArch32/AArch64).
Tests whether the register is a 256-bit vector register or view (X86|X86_64).
Tests whether the register is a 256-bit vector register or view having the given id reg_id (X86|X86_64).
Tests whether the register is a 512-bit vector register or view (X86|X86_64).
Tests whether the register is a 512-bit vector register or view having the given id reg_id (X86|X86_64).
Tests whether the register is a mask register of any size.
Tests whether the register is a mask register of any size having the given id reg_id (X86|X86_64/AArch64).
Tests whether the register is a mask register (K register on X86|X86_64) - alias of is_mask_reg().
Tests whether the register is a mask register (K register on X86|X86_64) of any size having the given id reg_id (X86|X86_64/AArch64).
Tests whether the register is a tile register.
Tests whether the register is a tile register of the given id reg_id.
Tests whether the register is a tile register (TMM register on X86_64) - alias of is_tile_reg().
Tests whether the register is a tile register (TMM register on X86_64) of the given id reg_id - alias of is_tile_reg().
Tests whether the register is a segment register (X86|X86_64).
Tests whether the register is a segment register having the given id reg_id (X86|X86_64).
Tests whether the register is a control register (X86|X86_64).
Tests whether the register is a control register having the given id reg_id (X86|X86_64).
Tests whether the register is a debug register (X86|X86_64).
Tests whether the register is a debug register of the given id reg_id (X86|X86_64).
Tests whether the register is an MMX register (X86|X64).
Tests whether the register is an MMX register of the given id reg_id (X86|X64).
Tests whether the register is an FPU register (ST register on X86|X86_64) (X86|X64).
Tests whether the register is an FPU register (ST register on X86|X86_64) of the given id reg_id (X86|X64).
Tests whether the register is a BND register (X86|X64).
Tests whether the register is a BND register of the given id reg_id (X86|X64).
Tests whether the operand is a register matching the given register type.
Returns a size of a register or an X86 memory operand.
At the moment only X86 and X86_64 memory operands have a size - other memory operands can use bits that represent size as an additional payload. This means that memory size is architecture specific and should be accessed via x86::Mem::size(). Sometimes when the user knows that the operand is either a register or memory operand this function can be helpful as it avoids casting, but it only works when it targets X86 and X86_64.
Memory index offset in a _data[2] array.
Low 32-bit offset value a _data[2] array.
Low 32-bit immediate value in a _data[2] array.
High 32-bit immediate value in a _data[2] array.
Minimum valid packed-id.
Maximum valid packed-id, excludes Globals::kInvalidId.
Count of valid packed-ids.
Either base id as used by memory operand or any id as used by others.
Data specific to the operand type.
The reason we don't use union is that we have constexpr constructors that construct operands and other constexpr functions that return whether another Operand or something else. These cannot generally work with unions so we also cannot use union if we want to be standard compliant.