security/rustscan: Fix build on aarch64.

1 files changed, 127 insertions, 0 deletions

diff --git a/security/rustscan/files/patch-cargo-crates_ring-0.16.15 b/security/rustscan/files/patch-cargo-crates_ring-0.16.15
new file mode 100644
index 000000000000..4aaee12d64c2
--- /dev/null
+++ b/security/rustscan/files/patch-cargo-crates_ring-0.16.15
@@ -0,0 +1,127 @@
+--- cargo-crates/ring-0.16.15/Cargo.toml.orig	2020-06-16 23:27:06 UTC
++++ cargo-crates/ring-0.16.15/Cargo.toml
+@@ -70,7 +70,7 @@ version = "1.3.1"
+ features = ["std"]
+ optional = true
+ default-features = false
+-[target."cfg(any(target_os = \"android\", target_os = \"linux\"))".dependencies.libc]
++[target."cfg(any(target_os = \"android\", target_os = \"freebsd\", target_os = \"linux\"))".dependencies.libc]
+ version = "0.2.69"
+ default-features = false
+ [target."cfg(any(unix, windows))".dev-dependencies.libc]
+--- cargo-crates/ring-0.16.15/src/cpu.rs.orig	2020-06-10 20:45:54 UTC
++++ cargo-crates/ring-0.16.15/src/cpu.rs
+@@ -60,6 +60,11 @@ pub(crate) fn features() -> Features {
+             {
+                 arm::fuchsia_setup();
+             }
++
++            #[cfg(all(target_os = "freebsd", any(target_arch = "aarch64", target_arch = "arm")))]
++            {
++                arm::freebsd_setup();
++            }
+         });
+     }
+ 
+@@ -168,6 +173,83 @@ pub(crate) mod arm {
+         }
+     }
+ 
++    #[cfg(all(target_os = "freebsd", any(target_arch = "aarch64", target_arch = "arm")))]
++    pub fn freebsd_setup() {
++        extern crate std;
++        use libc::{c_int, c_ulong, c_void};
++
++        extern "C" {
++            fn elf_aux_info(aux: c_int, buf: *mut c_void, buflen: c_int) -> c_int;
++        }
++
++        const AT_HWCAP: c_int = 25;
++
++        #[cfg(target_arch = "aarch64")]
++        const HWCAP_NEON: c_ulong = 1 << 1;
++
++        #[cfg(target_arch = "arm")]
++        const HWCAP_NEON: c_ulong = 1 << 12;
++
++        let caps: c_ulong = 0;
++        let buffer : *mut c_void = { let t: *const c_ulong = &caps; t} as *mut c_void;
++
++        unsafe {
++            let _ret = elf_aux_info(
++                AT_HWCAP,
++                buffer,
++                std::mem::size_of_val(&caps) as i32
++            );
++        }
++
++        // We assume NEON is available on AARCH64 because it is a required
++        // feature.
++        #[cfg(target_arch = "aarch64")]
++        debug_assert!(caps & HWCAP_NEON == HWCAP_NEON);
++
++        // OpenSSL and BoringSSL don't enable any other features if NEON isn't
++        // available.
++        if caps & HWCAP_NEON == HWCAP_NEON {
++            let mut features = NEON.mask;
++
++            #[cfg(target_arch = "aarch64")]
++            const OFFSET: c_ulong = 3;
++
++            #[cfg(target_arch = "arm")]
++            const OFFSET: c_ulong = 0;
++            #[cfg(target_arch = "arm")]
++            const AT_HWCAP2: c_int = 26;
++            #[cfg(target_arch = "arm")]
++            let caps: c_ulong = 0;
++            #[cfg(target_arch = "arm")]
++            let buffer : *mut c_void = { let t: *const c_ulong = &caps; t} as *mut c_void;
++
++            #[cfg(target_arch = "arm")]
++            unsafe {
++                let _ret = elf_aux_info(
++                    AT_HWCAP2,
++                    buffer,
++                    std::mem::size_of_val(&caps) as i32
++                );
++            };
++
++            const HWCAP_AES: c_ulong = 1 << 0 + OFFSET;
++            const HWCAP_PMULL: c_ulong = 1 << 1 + OFFSET;
++            const HWCAP_SHA2: c_ulong = 1 << 3 + OFFSET;
++
++            if caps & HWCAP_AES == HWCAP_AES {
++                features |= AES.mask;
++            }
++            if caps & HWCAP_PMULL == HWCAP_PMULL {
++                features |= PMULL.mask;
++            }
++            if caps & HWCAP_SHA2 == HWCAP_SHA2 {
++                features |= 1 << 4;
++            }
++
++            unsafe { GFp_armcap_P = features };
++        }
++    }
++
+     #[cfg(not(target_arch = "wasm32"))]
+     pub(crate) struct Feature {
+         #[cfg_attr(
+@@ -193,7 +275,7 @@ pub(crate) mod arm {
+             }
+ 
+             #[cfg(all(
+-                any(target_os = "android", target_os = "linux", target_os = "fuchsia"),
++                any(target_os = "android", target_os = "linux", target_os = "fuchsia", target_os = "freebsd"),
+                 any(target_arch = "arm", target_arch = "aarch64")
+             ))]
+             {
+@@ -239,7 +321,7 @@ pub(crate) mod arm {
+     };
+ 
+     #[cfg(all(
+-        any(target_os = "android", target_os = "linux", target_os = "fuchsia"),
++        any(target_os = "android", target_os = "linux", target_os = "fuchsia", target_os = "freebsd"),
+         any(target_arch = "arm", target_arch = "aarch64")
+     ))]
+     extern "C" {