From 26403fe3f95063646a3030c2c4216632de2fff11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sun, 5 Oct 2025 19:15:22 +0200
Subject: [PATCH] std.os.linux: add mcontext_t and ucontext_t for hexagon

---
 lib/std/os/linux/hexagon.zig | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/lib/std/os/linux/hexagon.zig b/lib/std/os/linux/hexagon.zig
index ea54829e65..af3bf81b12 100644
--- a/lib/std/os/linux/hexagon.zig
+++ b/lib/std/os/linux/hexagon.zig
@@ -9,6 +9,8 @@ const gid_t = std.os.linux.gid_t;
 const pid_t = std.os.linux.pid_t;
 const sockaddr = linux.sockaddr;
 const socklen_t = linux.socklen_t;
+const stack_t = linux.stack_t;
+const sigset_t = linux.sigset_t;
 const timespec = std.os.linux.timespec;
 
 pub fn syscall0(number: SYS) usize {
@@ -235,5 +237,30 @@ pub const Elf_Symndx = u32;
 
 pub const VDSO = void;
 
-/// TODO
-pub const ucontext_t = void;
+pub const mcontext_t = extern struct {
+    gregs: [32]u32 align(8),
+    sa0: u32,
+    lc0: u32,
+    sa1: u32,
+    lc1: u32,
+    m0: u32,
+    m1: u32,
+    usr: u32,
+    p3_0: u32,
+    gp: u32,
+    ugp: u32,
+    pc: u32,
+    cause: u32,
+    badva: u32,
+    cs0: u32,
+    cs1: u32,
+    _pad2: u32,
+};
+
+pub const ucontext_t = extern struct {
+    flags: usize,
+    link: ?*ucontext_t,
+    stack: stack_t,
+    mcontext: mcontext_t,
+    sigmask: [2]u32,
+};