Support Android

I'll send a PR after https://github.com/rust-lang/libc/pull/1622 is merged and released

lib/clif-backend/src/libcalls.rs

@@ -78,7 +78,7 @@ pub extern "C" fn nearbyintf64(x: f64) -> f64 {
 
 // FIXME: Is there a replacement on AArch64?
 #[cfg(all(
-    any(target_os = "freebsd", target_os = "linux"),
+    any(target_os = "freebsd", target_os = "linux", target_os = "android"),
     target_arch = "aarch64"
 ))]
 #[no_mangle]

lib/clif-backend/src/signal/unix.rs

@@ -229,7 +229,10 @@ unsafe fn get_faulting_addr_and_ip(
     (si_addr, rip as _)
 }
 
-#[cfg(all(target_os = "linux", target_arch = "aarch64"))]
+#[cfg(all(
+    any(target_os = "linux", target_os = "android"),
+    target_arch = "aarch64"
+))]
 unsafe fn get_faulting_addr_and_ip(
     _siginfo: *const c_void,
     _ucontext: *const c_void,
@@ -237,7 +240,10 @@ unsafe fn get_faulting_addr_and_ip(
     (::std::ptr::null(), ::std::ptr::null())
 }
 
-#[cfg(all(target_os = "linux", target_arch = "x86_64"))]
+#[cfg(all(
+    any(target_os = "linux", target_os = "android"),
+    target_arch = "x86_64"
+))]
 unsafe fn get_faulting_addr_and_ip(
     siginfo: *const c_void,
     ucontext: *const c_void,
@@ -332,5 +338,7 @@ unsafe fn get_faulting_addr_and_ip(
     all(target_os = "macos", target_arch = "x86_64"),
     all(target_os = "linux", target_arch = "x86_64"),
     all(target_os = "linux", target_arch = "aarch64"),
+    all(target_os = "android", target_arch = "x86_64"),
+    all(target_os = "android", target_arch = "aarch64"),
 )))]
 compile_error!("This crate doesn't yet support compiling on operating systems other than linux and macos and architectures other than x86_64");

lib/runtime-core/Cargo.toml

@@ -16,7 +16,8 @@ wasmparser = "0.51.3"
 parking_lot = "0.10.0"
 lazy_static = "1.4"
 errno = "0.2"
-libc = "0.2.60"
+#libc = "0.2.60"
+libc = { path = "../../../libc", version = "0.2.65" }
 hex = "0.4"
 smallvec = "0.6"
 bincode = "1.1"

lib/runtime-core/build.rs

@@ -37,7 +37,7 @@ fn main() {
                 .file("image-loading-freebsd-x86-64.s")
                 .compile("image-loading");
         }
-        ("linux", "x86_64") => {
+        ("linux", "x86_64") | ("android", "x86_64") => {
             cc::Build::new()
                 .file("image-loading-linux-x86-64.s")
                 .compile("image-loading");

lib/runtime-core/src/fault.rs

@@ -743,7 +743,10 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> F
     }
 }
 
-#[cfg(all(target_os = "linux", target_arch = "aarch64"))]
+#[cfg(all(
+    any(target_os = "linux", target_os = "android"),
+    target_arch = "aarch64"
+))]
 /// Get fault info from siginfo and ucontext.
 pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> FaultInfo {
     #[allow(dead_code)]
@@ -810,7 +813,10 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> F
     }
 }
 
-#[cfg(all(target_os = "linux", target_arch = "x86_64"))]
+#[cfg(all(
+    any(target_os = "linux", target_os = "android"),
+    target_arch = "x86_64"
+))]
 /// Get fault info from siginfo and ucontext.
 pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> FaultInfo {
     use libc::{

lib/singlepass-backend/src/lib.rs

@@ -17,6 +17,8 @@
     all(target_os = "macos", target_arch = "x86_64"),
     all(target_os = "linux", target_arch = "x86_64"),
     all(target_os = "linux", target_arch = "aarch64"),
+    all(target_os = "android", target_arch = "x86_64"),
+    all(target_os = "android", target_arch = "aarch64"),
 )))]
 compile_error!("This crate doesn't yet support compiling on operating systems other than FreeBSD, linux and macos and architectures other than x86_64");
 

lib/wasi/src/syscalls/mod.rs

@@ -1,6 +1,11 @@
 #![allow(unused, clippy::too_many_arguments)]
 pub mod types;
-#[cfg(any(target_os = "freebsd", target_os = "linux", target_os = "macos"))]
+#[cfg(any(
+    target_os = "freebsd",
+    target_os = "linux",
+    target_os = "android",
+    target_os = "macos"
+))]
 pub mod unix;
 #[cfg(any(target_os = "windows"))]
 pub mod windows;
@@ -23,7 +28,12 @@ use std::convert::{Infallible, TryInto};
 use std::io::{self, Read, Seek, Write};
 use wasmer_runtime_core::{memory::Memory, vm::Ctx};
 
-#[cfg(any(target_os = "freebsd", target_os = "linux", target_os = "macos"))]
+#[cfg(any(
+    target_os = "freebsd",
+    target_os = "linux",
+    target_os = "android",
+    target_os = "macos"
+))]
 pub use unix::*;
 
 #[cfg(any(target_os = "windows"))]