Add ucontext_t and mcontext_t for RISC-V Linux

2 files changed, 62 insertions, 0 deletions

diff --git a/src/unix/linux_like/linux/musl/b64/riscv64/align.rs b/src/unix/linux_like/linux/musl/b64/riscv64/align.rs
new file mode 100644
index 0000000000..48d152a572
--- /dev/null
+++ b/src/unix/linux_like/linux/musl/b64/riscv64/align.rs
@@ -0,0 +1,44 @@
+s_no_extra_traits! {
+    #[allow(missing_debug_implementations)]
+    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,
+    }
+
+    #[allow(missing_debug_implementations)]
+    #[repr(align(16))]
+    pub struct mcontext_t {
+        pub __gregs: [::c_ulong; 32],
+        pub __fpregs: __riscv_mc_fp_state,
+    }
+
+    #[allow(missing_debug_implementations)]
+    pub union __riscv_mc_fp_state {
+        pub __f: __riscv_mc_f_ext_state,
+        pub __d: __riscv_mc_d_ext_state,
+        pub __q: __riscv_mc_q_ext_state,
+    }
+
+    #[allow(missing_debug_implementations)]
+    pub struct __riscv_mc_f_ext_state {
+        pub __f: [::c_uint; 32],
+        pub __fcsr: ::c_uint,
+    }
+
+    #[allow(missing_debug_implementations)]
+    pub struct __riscv_mc_d_ext_state {
+        pub __f: [::c_ulonglong; 32],
+        pub __fcsr: ::c_uint,
+    }
+
+    #[allow(missing_debug_implementations)]
+    #[repr(align(16))]
+    pub struct __riscv_mc_q_ext_state {
+        pub __f: [::c_ulonglong; 64],
+        pub __fcsr: ::c_uint,
+        pub __glibc_reserved: [::c_uint; 3],
+    }
+}
diff --git a/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs b/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs
index 2036583d5d..5dd34dafc0 100644
--- a/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs
@@ -721,3 +721,21 @@ pub const VMIN: usize = 6;
 pub const IEXTEN: ::tcflag_t = 0x00008000;
 pub const TOSTOP: ::tcflag_t = 0x00000100;
 pub const FLUSHO: ::tcflag_t = 0x00001000;
+
+pub const NGREG: usize = 32;
+pub const REG_PC: usize = 0;
+pub const REG_RA: usize = 1;
+pub const REG_SP: usize = 2;
+pub const REG_TP: usize = 4;
+pub const REG_S0: usize = 8;
+pub const REG_S1: usize = 9;
+pub const REG_A0: usize = 10;
+pub const REG_S2: usize = 18;
+pub const REG_NARGS: usize = 8;
+
+cfg_if! {
+    if #[cfg(libc_align)] {
+        mod align;
+        pub use self::align::*;
+    }
+}