Add getauxval for 64-bit Android

Author: jack-signal

src/unix/linux_like/android/b64/mod.rs

@@ -256,6 +256,31 @@ pub const RTLD_GLOBAL: ::c_int = 0x00100;
 pub const RTLD_NOW: ::c_int = 2;
 pub const RTLD_DEFAULT: *mut ::c_void = 0i64 as *mut ::c_void;
 
+// From NDK's linux/auxvec.h
+pub const AT_NULL: ::c_ulong = 0;
+pub const AT_IGNORE: ::c_ulong = 1;
+pub const AT_EXECFD: ::c_ulong = 2;
+pub const AT_PHDR: ::c_ulong = 3;
+pub const AT_PHENT: ::c_ulong = 4;
+pub const AT_PHNUM: ::c_ulong = 5;
+pub const AT_PAGESZ: ::c_ulong = 6;
+pub const AT_BASE: ::c_ulong = 7;
+pub const AT_FLAGS: ::c_ulong = 8;
+pub const AT_ENTRY: ::c_ulong = 9;
+pub const AT_NOTELF: ::c_ulong = 10;
+pub const AT_UID: ::c_ulong = 11;
+pub const AT_EUID: ::c_ulong = 12;
+pub const AT_GID: ::c_ulong = 13;
+pub const AT_EGID: ::c_ulong = 14;
+pub const AT_PLATFORM: ::c_ulong = 15;
+pub const AT_HWCAP: ::c_ulong = 16;
+pub const AT_CLKTCK: ::c_ulong = 17;
+pub const AT_SECURE: ::c_ulong = 23;
+pub const AT_BASE_PLATFORM: ::c_ulong = 24;
+pub const AT_RANDOM: ::c_ulong = 25;
+pub const AT_HWCAP2: ::c_ulong = 26;
+pub const AT_EXECFN: ::c_ulong = 31;
+
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
     value: 0,
     __reserved: [0; 36],
@@ -280,6 +305,10 @@ pub const UT_LINESIZE: usize = 32;
 pub const UT_NAMESIZE: usize = 32;
 pub const UT_HOSTSIZE: usize = 256;
 
+extern "C" {
+    pub fn getauxval(type_: ::c_ulong) -> ::c_ulong;
+}
+
 cfg_if! {
     if #[cfg(target_arch = "x86_64")] {
         mod x86_64;