Move atomic_lock code from asm to C with inline asm;

Add m68k, mips and sparc. (needs more careful checking)
Add 'slow_atomic_lock' for crippled archs.

2 files changed, 55 insertions, 0 deletions

diff --git a/lib/libpthread/arch/sparc/_atomic_lock.c b/lib/libpthread/arch/sparc/_atomic_lock.c
new file mode 100644
index 00000000000..35b50e3ada5
--- /dev/null
+++ b/lib/libpthread/arch/sparc/_atomic_lock.c
@@ -0,0 +1,10 @@
+/*	$OpenBSD	*/
+/* atomic lock for sparc */
+ 
+#include "spinlock.h"
+
+register_t
+_atomic_lock(volatile register_t * lock)
+{
+	return _thread_slow_atomic_lock(lock);
+}
diff --git a/lib/libpthread/arch/sparc/uthread_machdep.h b/lib/libpthread/arch/sparc/uthread_machdep.h
new file mode 100644
index 00000000000..56103122674
--- /dev/null
+++ b/lib/libpthread/arch/sparc/uthread_machdep.h
@@ -0,0 +1,45 @@
+/*
+ * OpenBSD/sparc machine-dependent thread macros
+ *
+ * $OpenBSD: uthread_machdep.h,v 1.1 1998/11/20 11:15:37 d Exp $
+ */
+
+#include <sys/signal.h>
+
+/* save the floating point state of a thread */
+#define _thread_machdep_save_float_state(thr) 		\
+	{						\
+		/* XXX tdb */		\
+	}
+
+/* restore the floating point state of a thread */
+#define _thread_machdep_restore_float_state(thr) 	\
+	{						\
+		/* XXX tdb */		\
+	}
+
+/* initialise the jmpbuf stack frame so it continues from entry */
+
+#define _thread_machdep_thread_create(thr, entry, pattr)	\
+	{						\
+	    /* entry */					\
+	    (thr)->saved_jmp_buf[1] = (long) entry;	\
+	    /* stack */					\
+	    (thr)->saved_jmp_buf[0] = (long) (thr)->stack \
+				+ (pattr)->stacksize_attr \
+				- sizeof(double);	\
+	}
+
+/*
+ * XXX high chance of longjmp botch (see libc/arch/sparc/gen/_setjmp.S)
+ * because it uses the frame pointer to pop off frames.. we don't want
+ * that.. what to do? fudge %fp? do our own setjmp?
+ */
+#define	_thread_machdep_longjmp(a,v)	_longjmp(a,v)
+#define	_thread_machdep_setjmp(a)	_setjmp(a)
+
+struct _machdep_struct {
+        /* char            saved_fp[???]; */
+	int	dummy;
+};
+