[src/trunk]: src/sys/arch/arm add a fpu_used sysarch

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f50072b8884e
branches:  trunk
changeset: 784538:f50072b8884e
user:      matt <matt%NetBSD.org@localhost>
date:      Thu Jan 31 14:58:51 2013 +0000

description:
add a fpu_used sysarch

diffstat:

 sys/arch/arm/arm32/sys_machdep.c |  17 +++++++++++++++--
 sys/arch/arm/include/sysarch.h   |   7 ++++++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diffs (80 lines):

diff -r 25432a6668b5 -r f50072b8884e sys/arch/arm/arm32/sys_machdep.c
--- a/sys/arch/arm/arm32/sys_machdep.c  Thu Jan 31 14:56:32 2013 +0000
+++ b/sys/arch/arm/arm32/sys_machdep.c  Thu Jan 31 14:58:51 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sys_machdep.c,v 1.15 2012/08/12 05:05:47 matt Exp $    */
+/*     $NetBSD: sys_machdep.c,v 1.16 2013/01/31 14:58:51 matt Exp $    */
 
 /*
  * Copyright (c) 1995-1997 Mark Brinicombe.
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_machdep.c,v 1.15 2012/08/12 05:05:47 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_machdep.c,v 1.16 2013/01/31 14:58:51 matt Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -61,6 +61,7 @@
 static int arm32_sync_icache(struct lwp *, const void *, register_t *);
 static int arm32_drain_writebuf(struct lwp *, const void *, register_t *);
 static int arm32_vfp_fpscr(struct lwp *, const void *, register_t *);
+static int arm32_fpu_used(struct lwp *, const void *, register_t *);
 
 static int
 arm32_sync_icache(struct lwp *l, const void *args, register_t *retval)
@@ -117,6 +118,14 @@
        return 0;
 }
 
+static int
+arm32_fpu_used(struct lwp *l, const void *uap, register_t *retval)
+{
+       /* No args */
+       retval[0] = (curlwp->l_md.md_flags & MDLWP_VFPUSED) != 0;
+       return 0;
+}
+
 int
 sys_sysarch(struct lwp *l, const struct sys_sysarch_args *uap, register_t *retval)
 {
@@ -139,6 +148,10 @@
                error = arm32_vfp_fpscr(l, SCARG(uap, parms), retval);
                break;
 
+       case ARM_FPU_USED :
+               error = arm32_fpu_used(l, SCARG(uap, parms), retval);
+               break;
+
        default:
                error = EINVAL;
                break;
diff -r 25432a6668b5 -r f50072b8884e sys/arch/arm/include/sysarch.h
--- a/sys/arch/arm/include/sysarch.h    Thu Jan 31 14:56:32 2013 +0000
+++ b/sys/arch/arm/include/sysarch.h    Thu Jan 31 14:58:51 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sysarch.h,v 1.8 2012/08/12 05:05:47 matt Exp $ */
+/*     $NetBSD: sysarch.h,v 1.9 2013/01/31 14:58:51 matt Exp $ */
 
 /*
  * Copyright (c) 1996-1997 Mark Brinicombe.
@@ -49,6 +49,7 @@
 #define ARM_SYNC_ICACHE                0
 #define ARM_DRAIN_WRITEBUF     1
 #define ARM_VFP_FPSCR          2
+#define ARM_FPU_USED           3
 
 struct arm_sync_icache_args {
        uintptr_t       addr;           /* Virtual start address */
@@ -60,6 +61,10 @@
        uint32_t        fpscr_set;      /* bits to set */
 };
 
+struct arm_unaligned_faults_args {
+       bool            enabled;        /* unaligned faults are enabled */ 
+};
+
 #ifndef _KERNEL
 __BEGIN_DECLS
 int    arm_sync_icache(u_int addr, int len);