libthread: simplify

Now that everything uses pthreads and pthreadperthread,
can delete various conditionals, all the custom context code,
and so on. Also update documents.

Fixes #355.

1 files changed, 0 insertions, 36 deletions

diff --git a/src/libthread/power-ucontext.h b/src/libthread/power-ucontext.h
deleted file mode 100644
index 1985d98d..00000000
--- a/src/libthread/power-ucontext.h
+++ /dev/null
@@ -1,36 +0,0 @@
-#define	setcontext(u)	_setmcontext(&(u)->mc)
-#define	getcontext(u)	_getmcontext(&(u)->mc)
-typedef struct mcontext mcontext_t;
-typedef struct ucontext ucontext_t;
-struct mcontext
-{
-	ulong	pc;		/* lr */
-	ulong	cr;		/* mfcr */
-	ulong	ctr;		/* mfcr */
-	ulong	xer;		/* mfcr */
-	ulong	sp;		/* callee saved: r1 */
-	ulong	toc;		/* callee saved: r2 */
-	ulong	r3;		/* first arg to function, return register: r3 */
-	ulong	gpr[19];	/* callee saved: r13-r31 */
-/*
-// XXX: currently do not save vector registers or floating-point state
-//	ulong	pad;
-//	uvlong	fpr[18];	/ * callee saved: f14-f31 * /
-//	ulong	vr[4*12];	/ * callee saved: v20-v31, 256-bits each * /
-*/
-};
-
-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 _getmcontext(mcontext_t*);
-void _setmcontext(mcontext_t*);