$NetBSD: patch-ax,v 1.1 1998/12/28 22:22:02 bad Exp $

--- /dev/null	Sun Dec 27 17:07:36 1998
+++ machdep/engine-i386-netbsd-1.3.h	Sun Dec 27 17:21:41 1998
@@ -0,0 +1,98 @@
+/* ==== machdep.h ============================================================
+ * Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu
+ *
+ * $Id: patch-ax,v 1.1 1998/12/28 22:22:02 bad Exp $
+ *
+ */
+
+#include <unistd.h>
+#include <setjmp.h>
+#include <sys/time.h>
+#include <sys/signal.h>	/* for _NSIG */
+
+/*
+ * The first machine dependent functions are the SEMAPHORES
+ * needing the test and set instruction.
+ */
+#define SEMAPHORE_CLEAR 0
+#define SEMAPHORE_SET   1
+
+#define SEMAPHORE_TEST_AND_SET(lock)    \
+({										\
+long temp = SEMAPHORE_SET;              \
+										\
+__asm__ volatile ("xchgl %0,(%2)"       \
+        :"=r" (temp)                    \
+        :"0" (temp),"r" (lock));        \
+temp;                                   \
+})
+
+#define SEMAPHORE_RESET(lock)           *lock = SEMAPHORE_CLEAR
+
+/*
+ * New types
+ */
+typedef long    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;
+    jmp_buf     		machdep_state;
+    char 	    		machdep_float_state[108];
+};
+
+/*
+ * 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	1024
+
+/*
+ * 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));
+
+#endif
+
+__END_DECLS