Upstream tdx-tdcall to crates.io

Signed-off-by: Ouyang, Hang <[email protected]>
Signed-off-by: OuyangHang33 <[email protected]>

tdx-tdcall/Cargo.toml

@@ -7,6 +7,9 @@ homepage = "https://github.com/confidential-containers"
 license = "BSD-2-Clause-Patent"
 edition = "2018"
 
+readme = "README.md"
+keywords = ["TDCALL", "TDX", "intel"]
+
 [dependencies]
 lazy_static = { version = "1.0", features = ["spin_no_std"] }
 log = "0.4.13"

tdx-tdcall/README.md

@@ -0,0 +1,16 @@
+[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fconfidential-containers%2Ftd-shim.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fconfidential-containers%2Ftd-shim?ref=badge_shield)
+# TDX-tdcall - Trust Domain Extensions tdcall
+
+## Documents
+
+* [Intel TDX](https://software.intel.com/content/www/us/en/develop/articles/intel-trust-domain-extensions.html)
+
+## Introduction
+
+Intel’s Trust Domain Extensions (TDX) protect confidential guest VMs from the host and physical attacks by isolating the guest register state and by encrypting the guest memory. In TDX, a special module running in a special mode sits between the host and the guest and manages the guest/host separation.
+
+This tdx-tdcall crate provides constants, stuctures and wrappers to support user access TDCALL services.
+
+
+## License
+[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fconfidential-containers%2Ftd-shim.svg?type=large)](https://app.fossa.com/projects/git%2Bgithub.com%2Fconfidential-containers%2Ftd-shim?ref=badge_large)

tdx-tdcall/src/tdx.rs

@@ -234,7 +234,7 @@ pub fn tdvmcall_io_write_32(port: u16, byte: u32) {
 pub fn tdvmcall_mmio_write<T: Sized>(address: *const T, value: T) {
     let address = address as u64 | *SHARED_MASK;
     fence(Ordering::SeqCst);
-    let val = unsafe { *(&value as *const T as *const u64) };
+    let val = unsafe { *(core::ptr::addr_of!(value) as *const u64) };
 
     let mut args = TdVmcallArgs {
         r11: TDVMCALL_MMIO,
@@ -273,7 +273,7 @@ pub fn tdvmcall_mmio_read<T: Clone + Copy + Sized>(address: usize) -> T {
         tdvmcall_halt();
     }
 
-    unsafe { *(&args.r11 as *const u64 as *const T) }
+    unsafe { *(core::ptr::addr_of!(args.r11) as *const T) }
 }
 
 /// Used to request the host VMM to map a GPA range as a private or shared memory mappings.
@@ -514,8 +514,8 @@ pub fn tdcall_get_td_info() -> Result<TdInfo, TdCallError> {
 ///
 /// Details can be found in TDX Module ABI spec section 'TDG.VP.INFO Leaf'
 pub fn tdcall_extend_rtmr(digest: &TdxDigest, mr_index: u32) -> Result<(), TdCallError> {
-    let buffer: u64 = &digest.data as *const u8 as u64;
-
+    let buffer: u64 = core::ptr::addr_of!(digest.data) as u64;
+    
     let mut args = TdcallArgs {
         rax: TDCALL_TDEXTENDRTMR,
         rcx: buffer,