Add with carry, setting flags
This instruction adds two register values and the Carry flag value, and writes the result to the destination register. It updates the condition flags based on the result.
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| sf | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | Rm | 0 | 0 | 0 | 0 | 0 | 0 | Rn | Rd | ||||||||||||
| op | S | ||||||||||||||||||||||||||||||
let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn); let m : integer{} = UInt(Rm); let datasize : integer{} = 32 << UInt(sf);
| <Wd> |
Is the 32-bit name of the general-purpose destination register, encoded in the "Rd" field. |
| <Wn> |
Is the 32-bit name of the first general-purpose source register, encoded in the "Rn" field. |
| <Wm> |
Is the 32-bit name of the second general-purpose source register, encoded in the "Rm" field. |
| <Xd> |
Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field. |
| <Xn> |
Is the 64-bit name of the first general-purpose source register, encoded in the "Rn" field. |
| <Xm> |
Is the 64-bit name of the second general-purpose source register, encoded in the "Rm" field. |
let operand1 : bits(datasize) = X{}(n); let operand2 : bits(datasize) = X{}(m); var result : bits(datasize); var nzcv : bits(4); (result, nzcv) = AddWithCarry{datasize}(operand1, operand2, PSTATE.C); X{datasize}(d) = result; PSTATE.[N,Z,C,V] = nzcv;
This instruction is a data-independent-time instruction as described in About PSTATE.DIT.
2026-03_rel 2026-03-26 20:48:11
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