.

src/lib.rs

@@ -1,12 +1,18 @@
-#![no_std]
+#![no_std] #![feature(naked_functions)]
 
 #[cfg(all(target_arch = "x86_64", target_os = "windows"))]
 mod win64 {
+
+    #[used] #[no_mangle]
+    static _fltused: i32 = 0;
+
     mod memcpy;
     mod memset;
     mod strlen;
     mod memmove;
     mod memcmp;
+
+    mod misc;
 }
 
 #[allow(unused)]
@@ -35,7 +41,5 @@ extern "system" {
 
 
 
-
-
 
 

src/win64/misc.rs

@@ -0,0 +1,25 @@
+#[no_mangle] #[naked]
+pub unsafe extern "C" fn __chkstk() {
+    core::arch::asm!(
+    "push   %rcx",
+    "cmp    $0x1000,%rax",
+    "lea    16(%rsp),%rcx", // rsp before calling this routine -> rcx
+    "jb     1f",
+    "2:",
+    "sub    $0x1000,%rcx",
+    "test   %rcx,(%rcx)",
+    "sub    $0x1000,%rax",
+    "cmp    $0x1000,%rax",
+    "ja     2b",
+    "1:",
+    "sub    %rax,%rcx",
+    "test   %rcx,(%rcx)",
+    "lea    8(%rsp),%rax",  // load pointer to the return address into rax
+    "mov    %rcx,%rsp",     // install the new top of stack pointer into rsp
+    "mov    -8(%rax),%rcx", // restore rcx
+    "push   (%rax)",        // push return address onto the stack
+    "sub    %rsp,%rax",     // restore the original value in rax
+    "ret",
+    options(noreturn, att_syntax)
+    );
+}