feat: integrate emulator interface
while I figure out the interface with zba, disable the exe example since it doesn't have an emu to pass to gdbstub
This commit is contained in:
parent
26aad8d1ae
commit
400e155502
23
build.zig
23
build.zig
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@ -27,6 +27,7 @@ pub fn link(exe: *std.build.LibExeObjStep) void {
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pub fn build(b: *std.build.Builder) void {
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const target = b.standardTargetOptions(.{});
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_ = target;
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const mode = b.standardReleaseOptions();
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// -- library --
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@ -42,18 +43,18 @@ pub fn build(b: *std.build.Builder) void {
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const test_step = b.step("lib-test", "Run Library Tests");
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test_step.dependOn(&lib_tests.step);
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// -- Executable --
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const exe = b.addExecutable("gdbserver", "src/main.zig");
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link(exe);
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// // -- Executable --
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// const exe = b.addExecutable("gdbserver", "src/main.zig");
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// link(exe);
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exe.setTarget(target);
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exe.setBuildMode(mode);
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exe.install();
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// exe.setTarget(target);
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// exe.setBuildMode(mode);
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// exe.install();
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const run_cmd = exe.run();
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run_cmd.step.dependOn(b.getInstallStep());
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if (b.args) |args| run_cmd.addArgs(args);
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// const run_cmd = exe.run();
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// run_cmd.step.dependOn(b.getInstallStep());
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// if (b.args) |args| run_cmd.addArgs(args);
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const run_step = b.step("run", "Run the app");
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run_step.dependOn(&run_cmd.step);
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// const run_step = b.step("run", "Run the app");
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// run_step.dependOn(&run_cmd.step);
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}
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@ -2,6 +2,7 @@ const std = @import("std");
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const target = @import("Server.zig").target;
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const Allocator = std.mem.Allocator;
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const Emulator = @import("lib.zig").Emulator;
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const Self = @This();
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const log = std.log.scoped(.Packet);
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@ -44,7 +45,7 @@ const String = union(enum) {
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}
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};
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pub fn parse(self: *Self, allocator: Allocator) !String {
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pub fn parse(self: *Self, allocator: Allocator, emu: Emulator) !String {
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switch (self.contents[0]) {
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// Required
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'?' => {
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@ -55,8 +56,8 @@ pub fn parse(self: *Self, allocator: Allocator) !String {
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},
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'g' => {
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// TODO: Actually reference GBA Registers
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const r = [_]u32{0xDEAD_BEEF} ** 0x10;
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const cpsr: u32 = 0xCAFE_B0BA;
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const r = emu.registers();
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const cpsr = emu.cpsr();
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const char_len = 2;
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const reg_len = @sizeOf(u32) * char_len; // Every byte is represented by 2 characters
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@ -64,7 +65,7 @@ pub fn parse(self: *Self, allocator: Allocator) !String {
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const ret = try allocator.alloc(u8, r.len * reg_len + reg_len); // r0 -> r15 + CPSR
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{
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var i: usize = 0;
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var i: u32 = 0;
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while (i < r.len + 1) : (i += 1) {
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const reg: u32 = if (i < r.len) r[i] else cpsr;
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@ -88,14 +89,13 @@ pub fn parse(self: *Self, allocator: Allocator) !String {
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const addr = try std.fmt.parseInt(u32, addr_str, 16);
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const len = try std.fmt.parseInt(u32, length_str, 16);
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_ = addr;
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const ret = try allocator.alloc(u8, len * 2);
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{
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var i: usize = 0;
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var i: u32 = 0;
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while (i < len) : (i += 1) {
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const value: u8 = 0;
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const value: u8 = emu.read(addr + i);
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_ = std.fmt.bufPrintIntToSlice(ret[i * 2 ..][0..2], value, 16, .lower, .{ .fill = '0', .width = 2 });
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}
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@ -4,6 +4,7 @@ const Packet = @import("Packet.zig");
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const Socket = network.Socket;
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const Allocator = std.mem.Allocator;
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const Emulator = @import("lib.zig").Emulator;
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const Self = @This();
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const log = std.log.scoped(.Server);
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@ -41,7 +42,9 @@ pkt_cache: ?[]const u8 = null,
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client: Socket,
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_socket: Socket,
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pub fn init() !Self {
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emu: Emulator,
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pub fn init(emulator: Emulator) !Self {
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try network.init();
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var socket = try Socket.create(.ipv4, .tcp);
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@ -53,7 +56,7 @@ pub fn init() !Self {
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const endpoint = try client.getLocalEndPoint();
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log.info("client connected from {}", .{endpoint});
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return .{ ._socket = socket, .client = client };
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return .{ .emu = emulator, ._socket = socket, .client = client };
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}
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pub fn deinit(self: *Self, allocator: Allocator) void {
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@ -81,12 +84,12 @@ pub fn run(self: *Self, allocator: Allocator) !void {
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const len = try self.client.receive(&buf);
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if (len == 0) break;
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const action = try Self.parse(allocator, buf[0..len]);
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const action = try self.parse(allocator, buf[0..len]);
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try self.send(allocator, action);
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}
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}
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fn parse(allocator: Allocator, input: []const u8) !Action {
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fn parse(self: *Self, allocator: Allocator, input: []const u8) !Action {
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return switch (input[0]) {
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'+' => .nothing,
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'-' => .retry,
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@ -95,7 +98,7 @@ fn parse(allocator: Allocator, input: []const u8) !Action {
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var packet = Packet.from(allocator, input) catch return .nack;
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defer packet.deinit(allocator);
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var string = packet.parse(allocator) catch return .nack;
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var string = packet.parse(allocator, self.emu) catch return .nack;
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defer string.deinit(allocator);
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const reply = string.inner();
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16
src/lib.zig
16
src/lib.zig
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@ -11,8 +11,8 @@ pub const Emulator = struct {
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writeFn: *const fn (*anyopaque, u32, u8) void,
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// FIXME: Expensive copy
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registersFn: *const fn (*const anyopaque) [16]u32,
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cpsrFn: *const fn (*const anyopaque) u32,
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registersFn: *const fn (*anyopaque) [16]u32,
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cpsrFn: *const fn (*anyopaque) u32,
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pub fn init(ptr: anytype) Self {
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const Ptr = @TypeOf(ptr);
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@ -27,25 +27,25 @@ pub const Emulator = struct {
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pub fn readImpl(pointer: *anyopaque, addr: u32) u8 {
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const self = @ptrCast(Ptr, @alignCast(alignment, pointer));
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return @call(.{ .modifier = .always_inline }, ptr_info.Pointer.child.read, .{ u8, self, addr });
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return @call(.{ .modifier = .always_inline }, ptr_info.Pointer.child.read, .{ self, addr });
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}
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pub fn writeImpl(pointer: *anyopaque, addr: u32, value: u8) void {
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const self = @ptrCast(Ptr, @alignCast(alignment, pointer));
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return @call(.{ .modifier = .always_inline }, ptr_info.Pointer.child.read, .{ u8, self, addr, value });
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return @call(.{ .modifier = .always_inline }, ptr_info.Pointer.child.write, .{ self, addr, value });
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}
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pub fn registersImpl(pointer: *const anyopaque) [16]u32 {
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pub fn registersImpl(pointer: *anyopaque) [16]u32 {
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const self = @ptrCast(Ptr, @alignCast(alignment, pointer));
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return self.r;
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return @call(.{ .modifier = .always_inline }, ptr_info.Pointer.child.registers, .{self});
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}
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pub fn cpsrImpl(pointer: *const anyopaque) u32 {
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pub fn cpsrImpl(pointer: *anyopaque) u32 {
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const self = @ptrCast(Ptr, @alignCast(alignment, pointer));
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return self.cpsr.raw;
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return @call(.{ .modifier = .always_inline }, ptr_info.Pointer.child.cpsr, .{self});
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}
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};
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