From 04e0a9bb81356b6713e634b4d950c524f0abf15c Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Thu, 13 Oct 2011 23:57:54 -0400
Subject: libthread: Lion context routines

---
 src/libthread/x86_64-ucontext.h | 43 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 src/libthread/x86_64-ucontext.h

(limited to 'src/libthread/x86_64-ucontext.h')

diff --git a/src/libthread/x86_64-ucontext.h b/src/libthread/x86_64-ucontext.h
new file mode 100644
index 00000000..08c6d9a8
--- /dev/null
+++ b/src/libthread/x86_64-ucontext.h
@@ -0,0 +1,43 @@
+#define	setcontext(u)	libthread_setmcontext(&(u)->mc)
+#define	getcontext(u)	libthread_getmcontext(&(u)->mc)
+typedef struct mcontext mcontext_t;
+typedef struct ucontext ucontext_t;
+
+struct mcontext
+{
+	uintptr	ax;
+	uintptr	bx;
+	uintptr cx;
+	uintptr dx;
+	uintptr si;
+	uintptr di;
+	uintptr	bp;
+	uintptr sp;
+	uintptr r8;
+	uintptr r9;
+	uintptr r10;
+	uintptr r11;
+	uintptr r12;
+	uintptr r13;
+	uintptr r14;
+	uintptr r15;
+/*
+// XXX: currently do not save vector registers or floating-point state
+*/
+};
+
+struct ucontext
+{
+	struct {
+		void *ss_sp;
+		uint ss_size;
+	} uc_stack;
+	sigset_t uc_sigmask;
+	mcontext_t mc;
+};
+
+void makecontext(ucontext_t*, void(*)(void), int, ...);
+int swapcontext(ucontext_t*, ucontext_t*);
+int libthread_getmcontext(mcontext_t*);
+void libthread_setmcontext(mcontext_t*);
+
-- 
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