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chore(v4t,v5te): don't give SWP/SWPB its own separate handler

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This commit is contained in:
Rekai Nyangadzayi Musuka
2023-09-07 20:31:14 -05:00
committed by Rekai Musuka
parent 253cbbcdff
commit 5d70e4bd1d
4 changed files with 46 additions and 62 deletions
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26
src/arm/v5te.zig
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@@ -6,18 +6,19 @@ pub const arm = struct {
const processing = @import("cpu/arm/data_processing.zig").dataProcessing;
const transfer = @import("cpu/arm/single_data_transfer.zig").singleDataTransfer;
const halfSignedTransfer = @import("cpu/arm/half_signed_data_transfer.zig").halfAndSignedDataTransfer;
const blockTransfer = @import("cpu/arm/block_data_transfer.zig").blockDataTransfer;
const branch = @import("cpu/arm/branch.zig").branch;
const branchExchange = @import("cpu/arm/branch.zig").branchAndExchange;
const swi = @import("cpu/arm/software_interrupt.zig").armSoftwareInterrupt;
const swap = @import("cpu/arm/single_data_swap.zig").singleDataSwap;
// Control Instruction Extension Space
const control = @import("cpu/arm/psr_transfer.zig").control;
/// Load Store Instruction Extention Space
const loadStoreExt = @import("cpu/arm/half_signed_data_transfer.zig").halfAndSignedDataTransfer;
// Arithmetic Instruction Extension Space
const multiply = @import("cpu/arm/multiply.zig").multiply;
/// Control Instruction Extension Space
const controlExt = @import("cpu/arm/psr_transfer.zig").control;
/// Arithmetic Instruction Extension Space
const multiplyExt = @import("cpu/arm/multiply.zig").multiply;
const cop = @import("cpu/arm/coprocessor.zig");
@@ -42,31 +43,28 @@ pub const arm = struct {
handler.* = switch (@as(u2, i >> 10)) {
0b00 => if (i == 0x121) blk: { // 12 bits
break :blk branchExchange(InstrFn);
} else if (i & 0xFBF == 0x109) blk: { // 11 bits
const B = i >> 6 & 1 == 1;
break :blk swap(InstrFn, B);
} else if (i & 0xF0F == 0x009) blk: { // 8 bits
const L = i >> 7 & 1 == 1;
const U = i >> 6 & 1 == 1;
const A = i >> 5 & 1 == 1;
const S = i >> 4 & 1 == 1;
break :blk multiply(InstrFn, L, U, A, S);
break :blk multiplyExt(InstrFn, L, U, A, S);
} else if (i & 0xE49 == 0x009 or i & 0xE49 == 0x049) blk: { // 6 bits
const P = i >> 8 & 1 == 1;
const U = i >> 7 & 1 == 1;
const I = i >> 6 & 1 == 1;
const W = i >> 5 & 1 == 1;
const L = i >> 4 & 1 == 1;
break :blk halfSignedTransfer(InstrFn, P, U, I, W, L);
break :blk loadStoreExt(InstrFn, P, U, I, W, L);
} else if (i & 0xD90 == 0x100) blk: { // 6 bits
const I = i >> 9 & 1 == 1;
const op = ((i >> 5) & 0x3) << 4 | (i & 0xF);
break :blk control(InstrFn, I, op);
break :blk controlExt(InstrFn, I, op);
} else blk: {
const I = i >> 9 & 1 == 1;
const S = i >> 4 & 1 == 1;
const instrKind = i >> 5 & 0xF;
break :blk processing(InstrFn, I, S, instrKind);
const instr_kind = i >> 5 & 0xF;
break :blk processing(InstrFn, I, S, instr_kind);
},
0b01 => if (i >> 9 & 1 == 1 and i & 1 == 1) und else blk: {
const I = i >> 9 & 1 == 1;