From 5d4a723a5f157c0ed38a348099a600d1d21c3c2b Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Tue, 6 Oct 2026 12:49:46 +0200
Subject: feat: gils core utils and other shit

---
 boot/boot.zig  | 21 ++++++++++++++++++++-
 boot/idt.zig   |  2 +-
 boot/regs.zig  |  2 +-
 boot/sched.zig |  2 +-
 4 files changed, 23 insertions(+), 4 deletions(-)

(limited to 'boot')

diff --git a/boot/boot.zig b/boot/boot.zig
index fff8a6b..4918881 100644
--- a/boot/boot.zig
+++ b/boot/boot.zig
@@ -60,6 +60,9 @@ fn kPhysToVirt(p: u64) u64 {
 fn kAllocFrame() u64 {
     return pmm.alloc() orelse 0;
 }
+fn kAllocContig(n: u64) u64 {
+    return pmm.allocContig(@intCast(n)) orelse 0;
+}
 fn kCreateAddrspace() u64 {
     return vmm.createAddressSpace() orelse 0;
 }
@@ -91,7 +94,7 @@ fn kMemmapLen(i: u64) u64 {
 }
 
 fn kMemmapKind(i: u64) u64 {
-    return if (memmapEntry(i)) |e| @intFromEnum(e.type) else 0;
+    return if (memmapEntry(i)) |e| @backingInt(e.type) else 0;
 }
 
 fn kMemFree() u64 {
@@ -161,8 +164,23 @@ fn kTaskState(i: u64) u64 {
     return sched.taskState(i);
 }
 
+// limine doesnt fully enable SSE the only reason i need this
+// is because Zig 0.17 bullshit
+inline fn enableSse() void {
+    asm volatile (
+        \\ mov %%cr0, %%rax
+        \\ and $0xfffb, %%ax
+        \\ or  $0x2, %%ax
+        \\ mov %%rax, %%cr0
+        \\ mov %%cr4, %%rax
+        \\ or  $0x600, %%rax
+        \\ mov %%rax, %%cr4
+        ::: .{ .rax = true, .memory = true });
+}
+
 // entry(_start)
 export fn _start() callconv(.c) noreturn {
+    enableSse();
     serial.init();
     serial.write("if you see this, it means revel didn't shit the bed\r\n");
 
@@ -217,6 +235,7 @@ export fn _start() callconv(.c) noreturn {
         .disk_sectors = &kDiskSectors,
         .disk_read = &kDiskRead,
         .disk_write = &kDiskWrite,
+        .alloc_contig = &kAllocContig,
     };
 
     // hand the kernel heap + framebuffer + low level ops to revo and bring up the vm
diff --git a/boot/idt.zig b/boot/idt.zig
index 0ffd116..15e6588 100644
--- a/boot/idt.zig
+++ b/boot/idt.zig
@@ -29,7 +29,7 @@ const Idtr = packed struct {
     base: u64,
 };
 
-var idt = [_]Gate{@bitCast(@as(u128, 0))} ** 256;
+var idt: [256]Gate = @splat(@bitCast(@as(u128, 0)));
 var idtr: Idtr = undefined;
 
 const names = [_][]const u8{
diff --git a/boot/regs.zig b/boot/regs.zig
index 7b2bb88..3a30860 100644
--- a/boot/regs.zig
+++ b/boot/regs.zig
@@ -24,7 +24,7 @@ pub const Frame = extern struct {
     ss: u64,
 };
 
-// push/pop the 15 gprs in frames exact order 
+// push/pop the 15 gprs in frames exact order
 // (rax pushed first -> highest field, r15 last -> at rsp = &frame)
 pub const PUSH_GPRS =
     \\push %rax
diff --git a/boot/sched.zig b/boot/sched.zig
index 1842309..383b40d 100644
--- a/boot/sched.zig
+++ b/boot/sched.zig
@@ -84,7 +84,7 @@ pub fn taskMax() u64 {
 }
 pub fn taskState(i: u64) u64 {
     if (i >= MAX_TASKS) return 0;
-    return @intFromEnum(tasks[i].state);
+    return @backingInt(tasks[i].state);
 }
 
 var proc_exited_flag: bool = false;
-- 
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