MD locking and thread support for hppa

3 files changed, 65 insertions, 0 deletions

diff --git a/lib/libc_r/arch/hppa/_atomic_lock.c b/lib/libc_r/arch/hppa/_atomic_lock.c
new file mode 100644
index 00000000000..be47bb99afa
--- /dev/null
+++ b/lib/libc_r/arch/hppa/_atomic_lock.c
@@ -0,0 +1,21 @@
+/*	$OpenBSD: _atomic_lock.c,v 1.1 1998/12/21 22:54:55 mickey Exp $	*/
+/*
+ * Atomic lock for hppa
+ */
+#include "spinlock.h"
+
+int
+_atomic_lock(volatile register_t *lock)
+{
+	register register_t old;
+
+	__asm__("ldcws 0(%1), %0" : "=r" (old): "r" (lock));
+
+	return (old == _SPINLOCK_LOCKED);
+}
+
+int
+_atomic_is_locked(volatile register_t *lock)
+{
+	return (*lock == _SPINLOCK_LOCKED);
+}
diff --git a/lib/libc_r/arch/hppa/_spinlock.h b/lib/libc_r/arch/hppa/_spinlock.h
new file mode 100644
index 00000000000..24a82c11472
--- /dev/null
+++ b/lib/libc_r/arch/hppa/_spinlock.h
@@ -0,0 +1,6 @@
+/*	$OpenBSD: _spinlock.h,v 1.1 1998/12/21 22:54:55 mickey Exp $	*/
+
+#define _SPINLOCK_UNLOCKED      (1)
+#define _SPINLOCK_LOCKED        (0)
+typedef int _spinlock_lock_t;
+
diff --git a/lib/libc_r/arch/hppa/uthread_machdep.h b/lib/libc_r/arch/hppa/uthread_machdep.h
new file mode 100644
index 00000000000..161283978ee
--- /dev/null
+++ b/lib/libc_r/arch/hppa/uthread_machdep.h
@@ -0,0 +1,38 @@
+/*
+ * OpenBSD/hppa machine-dependent thread macros
+ *
+ * $OpenBSD: uthread_machdep.h,v 1.1 1998/12/21 22:54:56 mickey Exp $$
+ */
+
+/* save the floating point state of a thread */
+#define _thread_machdep_save_float_state(thr) 		\
+	{						\
+		/* fsave privileged instr */		\
+	}
+
+/* restore the floating point state of a thread */
+#define _thread_machdep_restore_float_state(thr) 	\
+	{						\
+		/* frestore privileged instr */		\
+	}
+
+/* initialise the jmpbuf stack frame so it continues from entry */
+
+#define _thread_machdep_thread_create(thr, entry, pattr)	\
+	{						\
+	    /* entry */					\
+	    (thr)->saved_jmp_buf[5] = (long) entry;	\
+	    /* stack */					\
+	    (thr)->saved_jmp_buf[2] = (long) (thr)->stack \
+				+ (pattr)->stacksize_attr \
+				- sizeof(double);	\
+	}
+
+#define	_thread_machdep_longjmp(a,v)	_longjmp(a,v)
+#define	_thread_machdep_setjmp(a)	_setjmp(a)
+
+struct _machdep_struct {
+        /* char            saved_fp[108]; */
+	int	dummy;
+};
+