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chore: conform to zig style guides

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This commit is contained in:
Rekai Nyangadzayi Musuka
2022-01-01 21:08:36 -06:00
parent f2cc0721c7
commit c40a1af534
9 changed files with 95 additions and 102 deletions
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29
src/cpu/data_processing.zig
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@@ -1,13 +1,13 @@
const std = @import("std");
const cpu_mod = @import("../cpu.zig");
const processor = @import("../cpu.zig");
const Bus = @import("../bus.zig").Bus;
const ARM7TDMI = cpu_mod.ARM7TDMI;
const InstrFn = cpu_mod.InstrFn;
const Arm7tdmi = processor.Arm7tdmi;
const InstrFn = processor.InstrFn;
pub fn comptimeDataProcessing(comptime I: bool, comptime S: bool, comptime instrKind: u4) InstrFn {
return struct {
fn dataProcessing(cpu: *ARM7TDMI, _: *Bus, opcode: u32) void {
fn dataProcessing(cpu: *Arm7tdmi, _: *Bus, opcode: u32) void {
const rd = opcode >> 12 & 0xF;
const op1 = opcode >> 16 & 0xF;
@@ -15,7 +15,7 @@ pub fn comptimeDataProcessing(comptime I: bool, comptime S: bool, comptime instr
if (I) {
op2 = std.math.rotr(u32, opcode & 0xFF, (opcode >> 8 & 0xF) << 1);
} else {
op2 = reg_op2(cpu, opcode);
op2 = registerOp2(cpu, opcode);
}
switch (instrKind) {
@@ -34,17 +34,16 @@ pub fn comptimeDataProcessing(comptime I: bool, comptime S: bool, comptime instr
0xA => {
// CMP
var result: u32 = undefined;
const op1_val = cpu.r[op1];
const op1_val = cpu.r[op1];
const v_ctx = (op1_val >> 31 == 0x01) or (op2 >> 31 == 0x01);
const didOverflow = @subWithOverflow(u32, op1_val, op2, &result);
cpu.cpsr.set_v(v_ctx and (result >> 31 & 0x01 == 0x01));
cpu.cpsr.set_c(didOverflow);
cpu.cpsr.set_z(result == 0x00);
cpu.cpsr.set_n(result >> 31 & 0x01 == 0x01);
cpu.cpsr.setV(v_ctx and (result >> 31 & 0x01 == 0x01));
cpu.cpsr.setC(didOverflow);
cpu.cpsr.setZ(result == 0x00);
cpu.cpsr.setN(result >> 31 & 0x01 == 0x01);
},
else => std.debug.panic("TODO: implement data processing type {}", .{instrKind}),
}
@@ -52,7 +51,7 @@ pub fn comptimeDataProcessing(comptime I: bool, comptime S: bool, comptime instr
}.dataProcessing;
}
fn reg_op2(cpu: *const ARM7TDMI, opcode: u32) u32 {
fn registerOp2(cpu: *const Arm7tdmi, opcode: u32) u32 {
var amount: u32 = undefined;
if (opcode >> 4 & 0x01 == 0x01) {
amount = cpu.r[opcode >> 8 & 0xF] & 0xFF;