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SPU-II: Add common definitions
This commit is contained in:
Noam Preil
Andrew Kelley
parent
8c321f0cf5
commit
f18636fa58
3
lib/std/spu.zig
Normal file
3
lib/std/spu.zig
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@ -0,0 +1,3 @@
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pub usingnamespace @import("spu/defines.zig");
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pub const interpreter = @import("spu/interpreter.zig").Interpreter;
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158
lib/std/spu/defines.zig
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158
lib/std/spu/defines.zig
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@ -0,0 +1,158 @@
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const std = @import("std");
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pub const ExecutionCondition = enum(u3) {
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always = 0,
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when_zero = 1,
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not_zero = 2,
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greater_zero = 3,
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less_than_zero = 4,
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greater_or_equal_zero = 5,
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less_or_equal_zero = 6,
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overflow = 7,
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};
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pub const InputBehaviour = enum(u2) {
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zero = 0,
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immediate = 1,
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peek = 2,
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pop = 3,
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};
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pub const OutputBehaviour = enum(u2) {
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discard = 0,
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push = 1,
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jump = 2,
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jump_relative = 3,
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};
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pub const Command = enum(u5) {
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copy = 0,
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ipget = 1,
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get = 2,
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set = 3,
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store8 = 4,
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store16 = 5,
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load8 = 6,
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load16 = 7,
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undefined0 = 8,
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undefined1 = 9,
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frget = 10,
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frset = 11,
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bpget = 12,
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bpset = 13,
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spget = 14,
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spset = 15,
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add = 16,
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sub = 17,
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mul = 18,
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div = 19,
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mod = 20,
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@"and" = 21,
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@"or" = 22,
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xor = 23,
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not = 24,
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signext = 25,
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rol = 26,
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ror = 27,
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bswap = 28,
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asr = 29,
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lsl = 30,
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lsr = 31,
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};
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pub const Instruction = packed struct {
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condition: ExecutionCondition,
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input0: InputBehaviour,
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input1: InputBehaviour,
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modify_flags: bool,
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output: OutputBehaviour,
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command: Command,
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reserved: u1 = 0,
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pub fn format(instr: Instruction, comptime fmt: []const u8, options: std.fmt.FormatOptions, out: anytype) !void {
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try std.fmt.format(out, "0x{x:0<4} ", .{@bitCast(u16, instr)});
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try out.writeAll(switch (instr.condition) {
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.always => " ",
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.when_zero => "== 0",
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.not_zero => "!= 0",
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.greater_zero => " > 0",
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.less_than_zero => " < 0",
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.greater_or_equal_zero => ">= 0",
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.less_or_equal_zero => "<= 0",
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.overflow => "ovfl",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.input0) {
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.zero => "zero",
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.immediate => "imm ",
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.peek => "peek",
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.pop => "pop ",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.input1) {
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.zero => "zero",
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.immediate => "imm ",
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.peek => "peek",
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.pop => "pop ",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.command) {
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.copy => "copy ",
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.ipget => "ipget ",
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.get => "get ",
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.set => "set ",
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.store8 => "store8 ",
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.store16 => "store16 ",
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.load8 => "load8 ",
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.load16 => "load16 ",
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.undefined0 => "undefined",
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.undefined1 => "undefined",
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.frget => "frget ",
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.frset => "frset ",
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.bpget => "bpget ",
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.bpset => "bpset ",
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.spget => "spget ",
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.spset => "spset ",
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.add => "add ",
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.sub => "sub ",
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.mul => "mul ",
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.div => "div ",
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.mod => "mod ",
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.@"and" => "and ",
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.@"or" => "or ",
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.xor => "xor ",
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.not => "not ",
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.signext => "signext ",
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.rol => "rol ",
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.ror => "ror ",
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.bswap => "bswap ",
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.asr => "asr ",
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.lsl => "lsl ",
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.lsr => "lsr ",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.output) {
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.discard => "discard",
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.push => "push ",
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.jump => "jmp ",
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.jump_relative => "rjmp ",
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});
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try out.writeAll(" ");
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try out.writeAll(if (instr.modify_flags)
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"+ flags"
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else
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" ");
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}
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};
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pub const FlagRegister = packed struct {
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zero: bool,
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negative: bool,
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carry: bool,
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carry_enabled: bool,
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interrupt0_enabled: bool,
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interrupt1_enabled: bool,
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interrupt2_enabled: bool,
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interrupt3_enabled: bool,
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reserved: u8 = 0,
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};
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@ -80,6 +80,9 @@ pub const valgrind = @import("valgrind.zig");
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pub const zig = @import("zig.zig");
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pub const start = @import("start.zig");
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// TODO move this
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pub const spu = @import("spu.zig");
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// This forces the start.zig file to be imported, and the comptime logic inside that
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// file decides whether to export any appropriate start symbols.
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comptime {
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@ -1,161 +1,4 @@
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const std = @import("std");
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pub const ExecutionCondition = enum(u3) {
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always = 0,
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when_zero = 1,
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not_zero = 2,
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greater_zero = 3,
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less_than_zero = 4,
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greater_or_equal_zero = 5,
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less_or_equal_zero = 6,
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overflow = 7,
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};
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pub const InputBehaviour = enum(u2) {
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zero = 0,
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immediate = 1,
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peek = 2,
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pop = 3,
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};
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pub const OutputBehaviour = enum(u2) {
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discard = 0,
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push = 1,
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jump = 2,
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jump_relative = 3,
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};
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pub const Command = enum(u5) {
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copy = 0,
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ipget = 1,
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get = 2,
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set = 3,
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store8 = 4,
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store16 = 5,
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load8 = 6,
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load16 = 7,
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undefined0 = 8,
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undefined1 = 9,
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frget = 10,
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frset = 11,
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bpget = 12,
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bpset = 13,
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spget = 14,
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spset = 15,
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add = 16,
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sub = 17,
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mul = 18,
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div = 19,
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mod = 20,
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@"and" = 21,
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@"or" = 22,
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xor = 23,
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not = 24,
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signext = 25,
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rol = 26,
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ror = 27,
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bswap = 28,
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asr = 29,
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lsl = 30,
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lsr = 31,
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};
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pub const Instruction = packed struct {
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condition: ExecutionCondition,
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input0: InputBehaviour,
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input1: InputBehaviour,
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modify_flags: bool,
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output: OutputBehaviour,
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command: Command,
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reserved: u1 = 0,
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pub fn format(instr: Instruction, comptime fmt: []const u8, options: std.fmt.FormatOptions, out: anytype) !void {
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try std.fmt.format(out, "0x{x:0<4} ", .{@bitCast(u16, instr)});
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try out.writeAll(switch (instr.condition) {
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.always => " ",
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.when_zero => "== 0",
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.not_zero => "!= 0",
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.greater_zero => " > 0",
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.less_than_zero => " < 0",
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.greater_or_equal_zero => ">= 0",
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.less_or_equal_zero => "<= 0",
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.overflow => "ovfl",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.input0) {
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.zero => "zero",
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.immediate => "imm ",
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.peek => "peek",
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.pop => "pop ",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.input1) {
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.zero => "zero",
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.immediate => "imm ",
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.peek => "peek",
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.pop => "pop ",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.command) {
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.copy => "copy ",
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.ipget => "ipget ",
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.get => "get ",
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.set => "set ",
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.store8 => "store8 ",
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.store16 => "store16 ",
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.load8 => "load8 ",
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.load16 => "load16 ",
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.undefined0 => "undefined",
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.undefined1 => "undefined",
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.frget => "frget ",
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.frset => "frset ",
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.bpget => "bpget ",
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.bpset => "bpset ",
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.spget => "spget ",
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.spset => "spset ",
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.add => "add ",
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.sub => "sub ",
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.mul => "mul ",
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.div => "div ",
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.mod => "mod ",
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.@"and" => "and ",
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.@"or" => "or ",
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.xor => "xor ",
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.not => "not ",
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.signext => "signext ",
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.rol => "rol ",
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.ror => "ror ",
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.bswap => "bswap ",
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.asr => "asr ",
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.lsl => "lsl ",
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.lsr => "lsr ",
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});
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try out.writeAll(" ");
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try out.writeAll(switch (instr.output) {
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.discard => "discard",
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.push => "push ",
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.jump => "jmp ",
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.jump_relative => "rjmp ",
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});
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try out.writeAll(" ");
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try out.writeAll(if (instr.modify_flags)
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"+ flags"
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else
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" ");
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}
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};
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pub const FlagRegister = packed struct {
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zero: bool,
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negative: bool,
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carry: bool,
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carry_enabled: bool,
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interrupt0_enabled: bool,
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interrupt1_enabled: bool,
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interrupt2_enabled: bool,
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interrupt3_enabled: bool,
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reserved: u8 = 0,
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};
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pub usingnamespace @import("std").spu;
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pub const Register = enum {
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dummy,
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@ -164,4 +7,5 @@ pub const Register = enum {
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return null;
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}
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};
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pub const callee_preserved_regs = [_]Register{};
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