rework entry point

src/ex/init.zig

@@ -11,7 +11,8 @@ const rtl = @import("rtl");
 // XXX
 const fbconsole = @import("../dev/fbconsole.zig");
 
-pub fn init(boot_info: *r.BootInfo) void {
+export fn kmain(boot_info: *r.BootInfo) callconv(.c) void {
+    ke.init(boot_info);
     mm.init(boot_info);
     ps.init();
 

src/kern/entry.zig

@@ -1,16 +0,0 @@
-const std = @import("std");
-
-const r = @import("root");
-
-const pl = r.pl;
-const ke = r.ke;
-const ki = ke.private;
-
-pub const std_options = r.std_options;
-pub const panic = r.panic;
-
-export fn kmain(info: *r.BootInfo) callconv(.c) void {
-    ke.ncpus = 1;
-
-    ki.init(info);
-}

src/kern/init.zig

@@ -10,6 +10,7 @@ var thread0: ke.Thread = undefined;
 var stack: [r.kib(16)]u8 align(16) = undefined;
 
 pub fn init(boot_info: *r.BootInfo) linksection(r.init) void {
+    ke.ncpus = 1;
     ki.impl.early_init();
     ki.tunable.init(boot_info);
     std.log.info("Welcome to the machine", .{});
@@ -27,6 +28,4 @@ pub fn init(boot_info: *r.BootInfo) linksection(r.init) void {
     ki.sched.percpu.local().current_thread = &thread0;
 
     std.log.info("Zag for {s} ({s}), cmdline is \"{?s}\"", .{ pl.name, arch.name, boot_info.cmdline });
-
-    ex.private.init(boot_info);
 }

src/kern/root.zig

@@ -24,6 +24,7 @@ pub const Tunable = p.tunable.Tunable;
 
 // === Exported Interfaces ===
 pub const panic = p.panic.panic;
+pub const init = p.init;
 
 pub const ipl = struct {
     pub const raise = p.ipl.raise;

src/loader/main.zig

@@ -57,8 +57,8 @@ extern fn jump_to_kernel(loader_info: usize, stack: usize, entry: usize) void;
 pub fn loader_main(kernel: *anyopaque) void {
     r.mem.init();
     const entry = load_kernel(kernel);
-    const stack = r.mem.alloc(1024 * 32);
+    const stack = r.mem.alloc(1024 * 16);
 
     std.log.info("jumping to {x} with stack {x}", .{ entry, stack });
-    jump_to_kernel(@intFromPtr(&r.loader_info), stack + (1024 * 32), entry);
+    jump_to_kernel(@intFromPtr(&r.loader_info), stack + (1024 * 16), entry);
 }

src/platform/pc/tsc.zig

@@ -17,9 +17,7 @@ pub var tsc_timer: ke.TimeCounter = .{
 };
 
 pub fn init() linksection(r.init) void {
-    const features = amd64.cpu_features;
+    if (!amd64.cpu_features.invariant_tsc) {
-
-    if (!features.invariant_tsc) {
         log.info("invariant TSC not supported (get a new PC), using fallback", .{});
         if (ke.time.best()) |best| {
             log.info("using {s} as timecounter source", .{best.name});

src/root.zig

@@ -60,5 +60,5 @@ pub const panic = std.debug.FullPanic(ke.panic);
 
 comptime {
     // Ensure the entry point is linked in.
-    _ = @import("kern/entry.zig");
+    _ = @import("ex/init.zig");
 }