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|
------------------------------------------------------------------------
-- Agda Helium
--
-- Definitions of the data for a subset of Armv8-M instructions.
------------------------------------------------------------------------
{-# OPTIONS --safe --without-K #-}
module Helium.Instructions.Core where
open import Data.Bool
open import Data.Fin
open import Data.Nat hiding (pred)
open import Data.Product using (∃; _×_; _,_)
open import Data.Sum
open import Relation.Binary.PropositionalEquality
GenReg : Set
GenReg = Fin 16
VecReg : Set
VecReg = Fin 8
data VecOpSize : Set where
8bit : VecOpSize
16bit : VecOpSize
32bit : VecOpSize
module Size (size : VecOpSize) where
elements-1 : Fin 4
elements-1 = helper size
where
helper : VecOpSize → Fin 4
helper 8bit = # 3
helper 16bit = # 1
helper 32bit = # 0
elements : Fin 5
elements = suc elements-1
esize-1 : Fin 32
esize-1 = helper size
where
helper : VecOpSize → Fin 32
helper 8bit = # 7
helper 16bit = # 15
helper 32bit = # 31
esize : Fin 33
esize = suc esize-1
record VecOp₂ : Set where
field
size : VecOpSize
dest : VecReg
src₁ : VecReg
src₂ : GenReg ⊎ VecReg
open Size size public
VAdd = VecOp₂
VSub = VecOp₂
record VHSub : Set where
field
op₂ : VecOp₂
unsigned : Bool
open VecOp₂ op₂ public
VMul = VecOp₂
record VMulH : Set where
field
op₂ : VecOp₂
unsigned : Bool
open VecOp₂ op₂ public
record VRMulH : Set where
field
op₂ : VecOp₂
unsigned : Bool
open VecOp₂ op₂ public
record VMlA : Set where
field
size : VecOpSize
unsigned : Bool
acc : VecReg
src₁ : VecReg
src₂ : GenReg
open Size size public
VQDMulH = VecOp₂
VQRDMulH = VecOp₂
data Instruction : Set where
vadd : VAdd → Instruction
vsub : VSub → Instruction
vmul : VMul → Instruction
vmulh : VMulH → Instruction
vqdmulh : VQDMulH → Instruction
|
