Merge remote-tracking branch 'loadingalias/main' into add-no_std-and-wasm

Author: onethumb

Cargo.lock

@@ -68,12 +68,15 @@ DESTDIR=/my/custom/path make install
 
 The library supports various feature flags for different environments:
 
-* `std` (default) - Standard library support, includes `alloc`
+### Default Features
+* `std` - Standard library support, includes `alloc`
+* `ffi` - C/C++ FFI bindings for shared library (will become optional in v2.0)
+* `panic-handler` - Provides panic handler for `no_std` environments (disable when building binaries)
+
+### Optional Features
 * `alloc` - Heap allocation support (enables `Digest` trait, custom CRC params, checksum combining)
 * `cache` - Caches generated constants for custom CRC parameters (requires `alloc`)
 * `cli` - Enables command-line tools (`checksum`, `arch-check`, `get-custom-params`)
-* `ffi` - C/C++ FFI bindings for shared library
-* `panic-handler` - Provides panic handler for `no_std` environments (disable when building binaries)
 
 ### Building for `no_std`
 

README.md

@@ -175,8 +175,10 @@ unsafe fn detect_aarch64_features() -> ArchCapabilities {
 unsafe fn detect_aarch64_features() -> ArchCapabilities {
     ArchCapabilities {
         has_aes: cfg!(target_feature = "aes"),
+        has_crc: cfg!(target_feature = "crc"),
         has_sha3: cfg!(target_feature = "sha3"),
         has_sse41: false,
+        has_sse42: false,
         has_pclmulqdq: false,
         has_avx512vl: false,
         has_vpclmulqdq: false,
@@ -225,6 +227,7 @@ unsafe fn detect_x86_features() -> ArchCapabilities {
     let rust_version_supports_avx512 = check_rust_version_supports_avx512();
 
     let has_sse41 = cfg!(target_feature = "sse4.1");
+    let has_sse42 = cfg!(target_feature = "sse4.2");
     let has_pclmulqdq = has_sse41 && cfg!(target_feature = "pclmulqdq");
     let has_avx512vl =
         has_pclmulqdq && rust_version_supports_avx512 && cfg!(target_feature = "avx512vl");
@@ -233,8 +236,10 @@ unsafe fn detect_x86_features() -> ArchCapabilities {
 
     ArchCapabilities {
         has_aes: false,
+        has_crc: false,
         has_sha3: false,
         has_sse41,
+        has_sse42,
         has_pclmulqdq,
         has_avx512vl,
         has_vpclmulqdq,

src/feature_detection.rs

@@ -207,6 +207,7 @@ use digest::DynDigest;
 #[cfg(feature = "alloc")]
 use digest::InvalidBufferSize;
 
+#[cfg(any(target_arch = "x86", target_arch = "x86_64", target_arch = "aarch64"))]
 use crate::feature_detection::get_arch_ops;
 #[cfg(feature = "std")]
 use std::fs::File;