Added ucontext_t for powerpc64-linux

Signed-off-by: mgiessing <[email protected]>

Author: mgiessing

src/unix/linux_like/linux/gnu/b64/powerpc64/align.rs

@@ -5,3 +5,86 @@ s_no_extra_traits! {
         priv_: [i64; 4]
     }
 }
+
+s! {
+    pub struct ucontext_t {
+        pub uc_flags: ::c_ulong,
+        pub uc_link: *mut ucontext_t,
+        pub uc_stack: ::stack_t,
+        pub uc_sigmask: ::sigset_t,
+        pub uc_mcontext: mcontext_t,
+    }
+
+    pub struct pt_regs {
+        pub gpr: [::c_ulong; 32],
+        pub nip: ::c_ulong,
+        pub msr: ::c_ulong,
+        pub orig_gpr3: ::c_ulong,
+        pub ctr: ::c_ulong,
+        pub link: ::c_ulong,
+        pub xer: ::c_ulong,
+        pub ccr: ::c_ulong,
+        pub softe: ::c_ulong,
+        pub trap: ::c_ulong,
+        pub dar: ::c_ulong,
+        pub dsisr: ::c_ulong,
+        pub result: ::c_ulong,
+    }
+
+    #[repr(align(16))]
+    pub struct mcontext_t {
+        __glibc_reserved: [::c_ulong; 4],
+        pub signal: ::c_int,
+        __pad0: ::c_int,
+        pub handler: ::c_ulong,
+        pub oldmask: ::c_ulong,
+        pub regs: *mut pt_regs,
+        pub gp_regs: [::c_ulong; 48], // # define __NGREG	48
+        pub fp_regs: [::c_double; 33], // # define __NFPREG	33
+        pub v_regs: *mut vrregset_t,
+        pub vmx_reserve: [::c_long; 69], // # define __NVRREG	34 (34*2+1)
+    }
+
+    #[repr(align(16))]
+    pub struct vrregset_t {
+        pub vrregs: [[::c_uint; 4]; 32],
+        pub vscr: vscr_t,
+        pub vrsave: ::c_uint,
+        __pad: [::c_uint; 3],
+    }
+
+    #[repr(align(16))]
+    pub struct vscr_t {
+        #[cfg(target_endian = "big")]
+        __pad: [::c_uint; 3],
+        #[cfg(target_endian = "big")]
+        pub vscr_word: ::c_uint,
+
+        #[cfg(target_endian = "little")]
+        pub vscr_word: ::c_uint,
+        #[cfg(target_endian = "little")]
+        __pad: [::c_uint; 3],
+    }
+
+    #[repr(align(8))]
+    pub struct clone_args {
+        pub flags: ::c_ulonglong,
+        pub pidfd: ::c_ulonglong,
+        pub child_tid: ::c_ulonglong,
+        pub parent_tid: ::c_ulonglong,
+        pub exit_signal: ::c_ulonglong,
+        pub stack: ::c_ulonglong,
+        pub stack_size: ::c_ulonglong,
+        pub tls: ::c_ulonglong,
+        pub set_tid: ::c_ulonglong,
+        pub set_tid_size: ::c_ulonglong,
+        pub cgroup: ::c_ulonglong,
+    }
+}
+
+extern "C" {
+    pub fn getcontext(ucp: *mut ucontext_t) -> ::c_int;
+    pub fn setcontext(ucp: *const ucontext_t) -> ::c_int;
+    pub fn makecontext(ucp: *mut ucontext_t, func: extern "C" fn(), argc: ::c_int, ...);
+    pub fn swapcontext(uocp: *mut ucontext_t, ucp: *const ucontext_t) -> ::c_int;
+}