"""
MIF08, CAP, CodeGeneration, RiscV API
Functions to define instructions.
"""
from Lib.Errors import MiniCInternalError
from Lib.Operands import (
Condition, Immediate, Operand, Function, ZERO)
from Lib.Statement import (Instru3A, AbsoluteJump, ConditionalJump, Label)
[docs]def call(function: Function) -> Instru3A:
"""Function call."""
return Instru3A('call', function)
[docs]def jump(label: Label) -> AbsoluteJump:
"""Unconditional jump to label."""
return AbsoluteJump(label)
[docs]def conditional_jump(label: Label, op1: Operand, cond: Condition, op2: Operand):
"""Add a conditional jump to the code.
This is a wrapper around bge, bgt, beq, ... c is a Condition, like
Condition('bgt'), Condition(MiniCParser.EQ), ...
"""
op2 = op2 if op2 != Immediate(0) else ZERO
return ConditionalJump(cond=cond, op1=op1, op2=op2, label=label)
[docs]def add(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
if isinstance(sr2orimm7, Immediate):
return Instru3A("addi", dr, sr1, sr2orimm7)
else:
return Instru3A("add", dr, sr1, sr2orimm7)
[docs]def mul(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
if isinstance(sr2orimm7, Immediate):
raise MiniCInternalError("Cant multiply by an immediate")
else:
return Instru3A("mul", dr, sr1, sr2orimm7)
[docs]def div(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
if isinstance(sr2orimm7, Immediate):
raise MiniCInternalError("Cant divide by an immediate")
else:
return Instru3A("div", dr, sr1, sr2orimm7)
[docs]def rem(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
if isinstance(sr2orimm7, Immediate):
raise MiniCInternalError("Cant divide by an immediate")
return Instru3A("rem", dr, sr1, sr2orimm7)
[docs]def sub(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
if isinstance(sr2orimm7, Immediate):
raise MiniCInternalError("Cant substract by an immediate")
return Instru3A("sub", dr, sr1, sr2orimm7)
[docs]def land(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
return Instru3A("and", dr, sr1, sr2orimm7)
[docs]def lor(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A:
return Instru3A("or", dr, sr1, sr2orimm7)
[docs]def xor(dr: Operand, sr1: Operand, sr2orimm7: Operand) -> Instru3A: # pragma: no cover
return Instru3A("xor", dr, sr1, sr2orimm7)
[docs]def li(dr: Operand, imm7: Immediate) -> Instru3A:
return Instru3A("li", dr, imm7)
[docs]def mv(dr: Operand, sr: Operand) -> Instru3A:
return Instru3A("mv", dr, sr)
[docs]def ld(dr: Operand, mem: Operand) -> Instru3A:
return Instru3A("ld", dr, mem)
[docs]def sd(sr: Operand, mem: Operand) -> Instru3A:
return Instru3A("sd", sr, mem)