chore: run zig fmt
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19
src/cpu.zig
19
src/cpu.zig
@@ -28,7 +28,7 @@ pub const ARM7TDMI = struct {
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pub inline fn step(self: *@This()) u64 {
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const opcode = self.fetch();
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// Debug
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std.debug.print("R15: 0x{X:}\n", .{ opcode });
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std.debug.print("R15: 0x{X:}\n", .{opcode});
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ARM_LUT[armIdx(opcode)](self, self.bus, opcode);
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@@ -63,8 +63,8 @@ fn populate() [0x1000]InstrFn {
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const instrKind = i >> 5 & 0x0F;
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lut[i] = comptimeDataProcessing(I, S, instrKind);
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}
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}
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if (i >> 9 & 0x7 == 0b000 and i >> 6 & 0x01 == 0x00 and i & 0xF == 0x0) {
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// Halfword and Signed Data Transfer with register offset
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const P = i >> 8 & 0x01 == 0x01;
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@@ -86,7 +86,7 @@ fn populate() [0x1000]InstrFn {
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lut[i] = comptimeHalfSignedDataTransfer(P, U, I, W, L);
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}
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if (i >> 10 & 0x3 == 0b01 and i & 0x01 == 0x00) {
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const I = i >> 9 & 0x01 == 0x01;
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const P = i >> 8 & 0x01 == 0x01;
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@@ -97,11 +97,11 @@ fn populate() [0x1000]InstrFn {
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lut[i] = comptimeSingleDataTransfer(I, P, U, B, W, L);
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}
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if (i >> 9 & 0x7 == 0b101) {
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const L = i >> 8 & 0x01 == 0x01;
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lut[i] = comptimeBranch(L);
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}
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}
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}
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return lut;
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@@ -116,8 +116,8 @@ const CPSR = packed struct {
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_: u20,
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i: bool, // IRQ Disable
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f: bool, // FIQ Diable
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t: bool, // State
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m: Mode, // Mode
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t: bool, // State
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m: Mode, // Mode
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};
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const Mode = enum(u5) {
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@@ -130,9 +130,6 @@ const Mode = enum(u5) {
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System = 0b11111,
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};
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fn undefined_instr(_: *ARM7TDMI, _: *Bus, opcode: u32) void {
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const id = armIdx(opcode);
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std.debug.panic("[0x{X:}] 0x{X:} is an illegal opcode", .{ id, opcode });
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