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$NetBSD: patch-ad,v 1.2 1998/12/28 22:21:59 bad Exp $
--- /dev/null Sun Dec 27 17:07:36 1998
+++ machdep/engine-alpha-netbsd-1.3.h Sun Dec 27 17:21:40 1998
@@ -0,0 +1,112 @@
+/* ==== machdep.h ============================================================
+ * Copyright (c) 1994 Chris Provenzano (proven@athena.mit.edu) and
+ * Ken Raeburn (raeburn@mit.edu).
+ *
+ * engine-alpha-osf1.h,v 1.4.4.1 1995/12/13 05:41:42 proven Exp
+ *
+ */
+
+#include <unistd.h>
+#include <setjmp.h>
+#include <sys/time.h>
+#include <sys/cdefs.h>
+#include <sys/signal.h> /* for _NSIG */
+
+/* The first machine dependent functions are the SEMAPHORES needing
+ the test and set instruction.
+
+ On the Alpha, the actual values here are irrelevant; they just have
+ to be different. */
+#define SEMAPHORE_CLEAR 0
+#define SEMAPHORE_SET 1
+
+#if 0
+#define SEMAPHORE_TEST_AND_SET(lock) \
+({ int *_sem_lock = (lock), locked, old; \
+ asm ("mb" : : : "memory"); \
+ do { asm ("ldl_l %0,%1" : "=r" (old) : "m" (*_sem_lock)); \
+ /* ?? if (old != SEMAPHORE_CLEAR) break; */ \
+ asm ("stl_c %0,%1" : "=r" (locked), "=m" (*_sem_lock) \
+ : "0" (SEMAPHORE_SET)); \
+ } while (!locked); \
+ asm ("mb" : : : "memory"); \
+ old == SEMAPHORE_CLEAR; })
+
+#define SEMAPHORE_RESET(lock) \
+({ int *_sem_lock = (lock); \
+ *_sem_lock = SEMAPHORE_CLEAR; \
+ asm ("mb" : : : "memory"); })
+#endif
+
+/*
+ * New types
+ */
+typedef int semaphore;
+
+/*
+ * sigset_t macros
+ */
+#define SIG_ANY(sig) (sig)
+#define SIGMAX (_NSIG-1)
+
+/*
+ * New Strutures
+ */
+struct machdep_pthread {
+ void *(*start_routine)(void *);
+ void *start_argument;
+ void *machdep_stack;
+ struct itimerval machdep_timer;
+ unsigned long machdep_istate[11];
+ unsigned long machdep_fstate[9];
+};
+
+/*
+ * Static machdep_pthread initialization values.
+ * For initial thread only.
+ */
+#define MACHDEP_PTHREAD_INIT \
+ { NULL, NULL, NULL, { { 0, 0 }, { 0, 100000 } }, 0 }
+
+/*
+ * Minimum stack size
+ */
+#define PTHREAD_STACK_MIN 2048
+
+/*
+ * Some fd flag defines that are necessary to distinguish between posix
+ * behavior and bsd4.3 behavior.
+ */
+#define __FD_NONBLOCK O_NONBLOCK
+
+/*
+ * New functions
+ */
+
+__BEGIN_DECLS
+
+#if defined(PTHREAD_KERNEL)
+
+#define __machdep_stack_get(x) (x)->machdep_stack
+#define __machdep_stack_set(x, y) (x)->machdep_stack = y
+#define __machdep_stack_repl(x, y) \
+{ \
+ if (stack = __machdep_stack_get(x)) { \
+ __machdep_stack_free(stack); \
+ } \
+ __machdep_stack_set(x, y); \
+}
+
+void * __machdep_stack_alloc __P_((size_t));
+void __machdep_stack_free __P_((void *));
+
+int machdep_save_state __P_((void));
+
+int __machdep_save_int_state __P_((unsigned long *));
+void __machdep_restore_int_state __P_((unsigned long *));
+void __machdep_save_fp_state __P_((unsigned long *));
+void __machdep_restore_fp_state __P_((unsigned long *));
+
+#endif
+
+__END_DECLS
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