cb-branch ( rs imm opcode -- )

Vocabulary

cpu.riscv.64.assembler

Inputs

rs	an object
imm	an object
opcode	an object

Outputs

None

Definition

USING: kernel math ;

IN: cpu.riscv.64.assembler

:: cb-branch ( rs imm opcode -- )
    imm 9 signed-immediate :> n imm 1 bitand zero?
    [ ] [ imm 9 invalid-riscv-immediate ] if rs R' 7 shift n
    { { 8 1 12 } { 3 2 10 } { 6 2 5 } { 1 2 3 } { 5 1 2 } }
    scatter bitor opcode bitor emit-half ;