Implement fpsetmask() and other fp*() functions. Programs should use

	#include <ieeefp.h>

to access these functions instead of the i386 specific

	#include <machine/floatingpoint.h>

Submitted by: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>

4 files changed, 29 insertions, 13 deletions

diff --git a/sys/alpha/include/alpha_cpu.h b/sys/alpha/include/alpha_cpu.h
index 5107274..4bd1050 100644
--- a/sys/alpha/include/alpha_cpu.h
+++ b/sys/alpha/include/alpha_cpu.h
@@ -1,4 +1,4 @@
-/* $Id: alpha_cpu.h,v 1.2 1998/06/10 10:54:21 dfr Exp $ */
+/* $Id: alpha_cpu.h,v 1.3 1998/06/14 13:45:10 dfr Exp $ */
 /* From: NetBSD: alpha_cpu.h,v 1.15 1997/09/20 19:02:34 mjacob Exp */
 
 /*
@@ -273,8 +273,10 @@ typedef unsigned long alpha_pt_entry_t;
  */
 
 #define	ALPHA_AMASK_BWX		0x0001		/* byte/word extension */
-#define	ALPHA_AMASK_CIX		0x0002		/* count extension */
-#define	ALPHA_AMASK_MAX		0x0100		/* multimedia extension */
+#define	ALPHA_AMASK_FIX		0x0002		/* sqrt and f <-> i conversion extension */
+#define	ALPHA_AMASK_CIX		0x0004		/* count extension */
+#define	ALPHA_AMASK_MVI		0x0100		/* multimedia extension */
+#define	ALPHA_AMASK_PRECISE	0x0200		/* Precise arithmetic traps */
 
 /*
  * Chip family IDs returned by implver instruction
diff --git a/sys/alpha/include/fpu.h b/sys/alpha/include/fpu.h
index d4a767e..c9efcee 100644
--- a/sys/alpha/include/fpu.h
+++ b/sys/alpha/include/fpu.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id$
+ *	$Id: fpu.h,v 1.1 1998/12/04 10:52:48 dfr Exp $
  */
 
 #ifndef _MACHINE_FPU_H_
@@ -105,6 +105,16 @@
 
 #define IEEE_INHERIT		(1LL << 63) /* inherit on fork */
 
+/* read and write floating point control register */
+#define GET_FPCR(x) \
+	__asm__("trapb"); \
+	__asm__("mf_fpcr %0" : "=f" (x)); \
+	__asm__("trapb")
+#define SET_FPCR(x) \
+	__asm__("trapb"); \
+	__asm__("mt_fpcr %0" : : "f" (x)); \
+	__asm__("trapb")
+
 #ifdef KERNEL
 
 extern int fp_software_completion(u_int64_t regmask, struct proc *p);
diff --git a/sys/alpha/include/ieeefp.h b/sys/alpha/include/ieeefp.h
index c0f4c2f..a838e98 100644
--- a/sys/alpha/include/ieeefp.h
+++ b/sys/alpha/include/ieeefp.h
@@ -1,4 +1,4 @@
-/* $Id$ */
+/* $Id: ieeefp.h,v 1.1.1.1 1998/03/09 05:43:16 jb Exp $ */
 /* From: NetBSD: ieeefp.h,v 1.2 1997/04/06 08:47:28 cgd Exp */
 
 /* 
@@ -10,12 +10,14 @@
 #define _ALPHA_IEEEFP_H_
 
 typedef int fp_except;
-#define	FP_X_INV	0x01	/* invalid operation exception */
-#define	FP_X_DZ		0x02	/* divide-by-zero exception */
-#define	FP_X_OFL	0x04	/* overflow exception */
-#define	FP_X_UFL	0x08	/* underflow exception */
-#define	FP_X_IMP	0x10	/* imprecise (loss of precision; "inexact") */
-#define	FP_X_IOV	0x20    /* integer overflow XXX? */
+#define	FP_X_INV	(1LL << 1)	/* invalid operation exception */
+#define	FP_X_DZ		(1LL << 2)	/* divide-by-zero exception */
+#define	FP_X_OFL	(1LL << 3)	/* overflow exception */
+#define	FP_X_UFL	(1LL << 4)	/* underflow exception */
+#define	FP_X_IMP	(1LL << 5)	/* imprecise(inexact) exception */
+#if 0
+#define	FP_X_IOV	(1LL << 6)	/* integer overflow XXX? */
+#endif
 
 typedef enum {
     FP_RZ=0,			/* round to zero (truncate) */
diff --git a/sys/alpha/include/sysarch.h b/sys/alpha/include/sysarch.h
index 61806f8..e0e0a6b 100644
--- a/sys/alpha/include/sysarch.h
+++ b/sys/alpha/include/sysarch.h
@@ -30,7 +30,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id$
+ *	$Id: sysarch.h,v 1.1 1998/11/17 10:40:07 dfr Exp $
  */
 
 /*
@@ -39,7 +39,9 @@
 #ifndef _MACHINE_SYSARCH_H_
 #define _MACHINE_SYSARCH_H_
 
-#define ALPHA_SETHAE	0
+#define ALPHA_SETHAE		0
+#define ALPHA_GET_FPMASK	1
+#define ALPHA_SET_FPMASK	2
 
 #ifndef KERNEL
 #include <sys/cdefs.h>