Add Apple visionOS support

Author: QuentinPerez

build.rs

@@ -311,6 +311,7 @@ mod c {
         if target_os != "ios"
             && target_os != "watchos"
             && target_os != "tvos"
+            && target_os != "visionos"
             && (target_vendor != "apple" || target_arch != "x86")
         {
             sources.extend(&[
@@ -364,6 +365,7 @@ mod c {
 
         if target_arch == "arm"
             && target_os != "ios"
+            && target_os != "visionos"
             && target_os != "watchos"
             && target_os != "tvos"
             && target_env != "msvc"

src/arm.rs

@@ -4,13 +4,13 @@
 use core::intrinsics;
 
 // iOS symbols have a leading underscore.
-#[cfg(target_os = "ios")]
+#[cfg(any(target_os = "ios", target_os = "visionos"))]
 macro_rules! bl {
     ($func:literal) => {
         concat!("bl _", $func)
     };
 }
-#[cfg(not(target_os = "ios"))]
+#[cfg(not(any(target_os = "ios", target_os = "visionos")))]
 macro_rules! bl {
     ($func:literal) => {
         concat!("bl ", $func)
@@ -89,13 +89,13 @@ intrinsics! {
     // FIXME: The `*4` and `*8` variants should be defined as aliases.
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memcpy(dest: *mut u8, src: *const u8, n: usize) {
         crate::mem::memcpy(dest, src, n);
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memcpy4(dest: *mut u8, src: *const u8, n: usize) {
         // We are guaranteed 4-alignment, so accessing at u32 is okay.
         let mut dest = dest as *mut u32;
@@ -113,38 +113,38 @@ intrinsics! {
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memcpy8(dest: *mut u8, src: *const u8, n: usize) {
         __aeabi_memcpy4(dest, src, n);
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memmove(dest: *mut u8, src: *const u8, n: usize) {
         crate::mem::memmove(dest, src, n);
     }
 
     #[weak]
-    #[cfg(not(any(target_os = "ios", target_env = "msvc")))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos", target_env = "msvc")))]
     pub unsafe extern "aapcs" fn __aeabi_memmove4(dest: *mut u8, src: *const u8, n: usize) {
         __aeabi_memmove(dest, src, n);
     }
 
     #[weak]
-    #[cfg(not(any(target_os = "ios", target_env = "msvc")))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos", target_env = "msvc")))]
     pub unsafe extern "aapcs" fn __aeabi_memmove8(dest: *mut u8, src: *const u8, n: usize) {
         __aeabi_memmove(dest, src, n);
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memset(dest: *mut u8, n: usize, c: i32) {
         // Note the different argument order
         crate::mem::memset(dest, c, n);
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memset4(dest: *mut u8, n: usize, c: i32) {
         let mut dest = dest as *mut u32;
         let mut n = n;
@@ -162,25 +162,25 @@ intrinsics! {
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memset8(dest: *mut u8, n: usize, c: i32) {
         __aeabi_memset4(dest, n, c);
     }
 
     #[weak]
-    #[cfg(not(target_os = "ios"))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos")))]
     pub unsafe extern "aapcs" fn __aeabi_memclr(dest: *mut u8, n: usize) {
         __aeabi_memset(dest, n, 0);
     }
 
     #[weak]
-    #[cfg(not(any(target_os = "ios", target_env = "msvc")))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos", target_env = "msvc")))]
     pub unsafe extern "aapcs" fn __aeabi_memclr4(dest: *mut u8, n: usize) {
         __aeabi_memset4(dest, n, 0);
     }
 
     #[weak]
-    #[cfg(not(any(target_os = "ios", target_env = "msvc")))]
+    #[cfg(not(any(target_os = "ios", target_os = "visionos", target_env = "msvc")))]
     pub unsafe extern "aapcs" fn __aeabi_memclr8(dest: *mut u8, n: usize) {
         __aeabi_memset4(dest, n, 0);
     }