arch: fix x86_64 sp align, fix i686 missing f128 functions

kernel/arch/x86_64/src/context.rs

@@ -526,6 +526,10 @@ impl<K: KernelTableManager, PA: PhysicalMemoryAllocator<Address = PhysicalAddres
         unsafe { (*self.inner.get()).fs_base = tp };
         MSR_IA32_FS_BASE.set(tp as _);
     }
+
+    fn align_stack_for_entry(sp: usize) -> usize {
+        (sp & !0xF) - 8
+    }
 }
 
 impl<K: KernelTableManager, PA: PhysicalMemoryAllocator<Address = PhysicalAddress>> Drop

lib/runtime/src/lib.rs

@@ -1,5 +1,5 @@
 //! Yggdrasil OS application runtime
-#![feature(rustc_private, decl_macro)]
+#![feature(rustc_private, decl_macro, f128, linkage)]
 #![no_std]
 #![deny(missing_docs)]
 #![allow(nonstandard_style)]

userspace/dyn-loader/src/main.rs

@@ -113,14 +113,10 @@ unsafe fn enter(entry: extern "C" fn(usize), argument: usize) -> ! {
             "#,
             in(reg) argument,
             in(reg) entry,
-            options(att_syntax)
+            options(att_syntax, noreturn)
         );
     }
-    #[cfg(any(target_arch = "x86_64", rust_analyzer))]
-    {
-        loop {}
-    }
-    #[cfg(any(target_arch = "aarch64", rust_analyzer))]
+    #[cfg(any(target_arch = "aarch64", target_arch = "x86_64", rust_analyzer))]
     {
         entry(argument);
         unreachable!()

userspace/dyn-loader/src/thread_local/variant2.rs

@@ -77,6 +77,7 @@ impl TlsLayoutBuilder for TlsLayoutImpl {
                 segments,
                 total_size,
                 tp_offset,
+                prefix_len: 0
             },
             align,
         ))

userspace/lib/ygglibc/etc/i686-unknown-none.json

@@ -7,7 +7,7 @@
   "data-layout": "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i128:128-f64:32:64-f80:32-n8:16:32-S128",
   "max-atomic-width": 64,
   "target-pointer-width": "32",
-  "features": "+sse,-soft-float",
+  "features": "+sse",
 
   "executables": true,
   "dynamic-linking": true,

xtask/src/build/cargo.rs

@@ -8,7 +8,7 @@ use std::{
 use serde::Deserialize;
 
 use crate::{
-    env::{BuildEnv, Profile},
+    env::{Arch, BuildEnv, Profile},
     error::Error,
 };
 
@@ -87,11 +87,16 @@ impl<'e> CargoBuilder<'e> {
                         .display(),
                     env.arch
                 );
+                let mut build_std_features =
+                    "compiler-builtins-mangled-names,compiler-builtins-mem".to_owned();
+                if env.arch == Arch::i686 {
+                    build_std_features += ",compiler-builtins-no-f16-f128";
+                }
 
                 command
                     .arg(arg)
                     .arg("-Zbuild-std=core,alloc")
-                    .arg("-Zbuild-std-features=compiler-builtins-mangled-names,compiler-builtins-mem")
+                    .arg(&format!("-Zbuild-std-features={build_std_features}"))
                     .arg(&format!("--target={target}"));
 
                 if env.verbose {