From 8995060f9bcb54d71c98134bfc94ead8395cd668 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jes=C3=BAs=20Legan=C3=A9s-Combarro=20=27piranna?=
 <piranna@gmail.com>
Date: Sun, 19 May 2019 20:53:24 +0200
Subject: [PATCH] Mocks for `_getcontext`, `_makecontext`, `_setcontext` and
 `_swapcontext`

---
 lib/emscripten/src/emscripten_target.rs | 17 +++++++++++++++++
 lib/emscripten/src/lib.rs               |  6 ++++++
 2 files changed, 23 insertions(+)

diff --git a/lib/emscripten/src/emscripten_target.rs b/lib/emscripten/src/emscripten_target.rs
index 3e0ab599a..5dbbe1266 100644
--- a/lib/emscripten/src/emscripten_target.rs
+++ b/lib/emscripten/src/emscripten_target.rs
@@ -856,3 +856,20 @@ pub fn invoke_viidddddddd(
         a10
     );
 }
+
+// ucontext.h
+pub fn _getcontext(_ctx: &mut Ctx, _ucp: i32) -> i32 {
+    debug!("emscripten::_getcontext({})", _ucp);
+    0
+}
+pub fn _makecontext(_ctx: &mut Ctx, _ucp: i32, _func: i32, _argc: i32, _argv: i32) {
+    debug!("emscripten::_makecontext({}, {}, {}, {})", _ucp, _func, _argc, _argv);
+}
+pub fn _setcontext(_ctx: &mut Ctx, _ucp: i32) -> i32 {
+    debug!("emscripten::_setcontext({})", _ucp);
+    0
+}
+pub fn _swapcontext(_ctx: &mut Ctx, _oucp: i32, _ucp: i32) -> i32 {
+    debug!("emscripten::_swapcontext({}, {})", _oucp, _ucp);
+    0
+}
diff --git a/lib/emscripten/src/lib.rs b/lib/emscripten/src/lib.rs
index 5fc06d74b..4e1e746bf 100644
--- a/lib/emscripten/src/lib.rs
+++ b/lib/emscripten/src/lib.rs
@@ -822,6 +822,12 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
         "invoke_viid" => func!(crate::emscripten_target::invoke_viid),
         "invoke_viidii" => func!(crate::emscripten_target::invoke_viidii),
         "invoke_viidddddddd" => func!(crate::emscripten_target::invoke_viidddddddd),
+
+        // ucontext.h
+        "_getcontext" => func!(crate::emscripten_target::_getcontext),
+        "_makecontext" => func!(crate::emscripten_target::_makecontext),
+        "_setcontext" => func!(crate::emscripten_target::_setcontext),
+        "_swapcontext" => func!(crate::emscripten_target::_swapcontext),
     };
 
     for null_func_name in globals.null_func_names.iter() {