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SBC
Subtract with Carry.
This instruction is used by the alias NGC.
Syntax
SBC
Wd, Wn, Wm ; 32-bit
SBC
Xd, Xn, Xm ; 64-bit
Where:
Wd- Is the 32-bit name of the general-purpose destination register.
Wn- Is the 32-bit name of the first general-purpose source register.
Wm- Is the 32-bit name of the second general-purpose source register.
Xd- Is the 64-bit name of the general-purpose destination register.
Xn- Is the 64-bit name of the first general-purpose source register.
Xm- Is the 64-bit name of the second general-purpose source register.
Operation
Subtract with Carry subtracts a register value and the value of NOT (Carry flag) from a register value, and writes the result to the destination register.
Rd = Rn - Rm - 1 + CRW or X.