Implement support for hardware debug registers on the i386.

Submitted by:	Brian Dean <brdean@unx.sas.com>

3 files changed, 20 insertions, 3 deletions

diff --git a/sys/fs/procfs/procfs.h b/sys/fs/procfs/procfs.h
index b38ed87..f813070 100644
--- a/sys/fs/procfs/procfs.h
+++ b/sys/fs/procfs/procfs.h
@@ -37,7 +37,7 @@
  *	@(#)procfs.h	8.9 (Berkeley) 5/14/95
  *
  * From:
- *	$Id: procfs.h,v 1.25 1999/05/04 08:00:10 phk Exp $
+ *	$Id: procfs.h,v 1.26 1999/06/13 20:53:13 phk Exp $
  */
 
 /*
@@ -51,6 +51,7 @@ typedef enum {
 	Pmem,		/* the process's memory image */
 	Pregs,		/* the process's register set */
 	Pfpregs,	/* the process's FP register set */
+	Pdbregs,	/* the process's debug register set */
 	Pctl,		/* process control */
 	Pstatus,	/* process status */
 	Pnote,		/* process notifier */
@@ -124,6 +125,7 @@ vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int));
 /* <machine/reg.h> */
 struct reg;
 struct fpreg;
+struct dbreg;
 
 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0)
 
@@ -137,9 +139,12 @@ int procfs_read_regs __P((struct proc *, struct reg *));
 int procfs_write_regs __P((struct proc *, struct reg *));
 int procfs_read_fpregs __P((struct proc *, struct fpreg *));
 int procfs_write_fpregs __P((struct proc *, struct fpreg *));
+int procfs_read_dbregs __P((struct proc *, struct dbreg *));
+int procfs_write_dbregs __P((struct proc *, struct dbreg *));
 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
+int procfs_dodbregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
@@ -155,6 +160,7 @@ int procfs_kmemaccess __P((struct proc *));
 int procfs_validfile __P((struct proc *));
 int procfs_validfpregs __P((struct proc *));
 int procfs_validregs __P((struct proc *));
+int procfs_validdbregs __P((struct proc *));
 int procfs_validmap __P((struct proc *));
 int procfs_validtype __P((struct proc *));
 
diff --git a/sys/fs/procfs/procfs_subr.c b/sys/fs/procfs/procfs_subr.c
index 7b5e18c..cf313e8 100644
--- a/sys/fs/procfs/procfs_subr.c
+++ b/sys/fs/procfs/procfs_subr.c
@@ -36,7 +36,7 @@
  *
  *	@(#)procfs_subr.c	8.6 (Berkeley) 5/14/95
  *
- *	$Id: procfs_subr.c,v 1.23 1999/01/27 22:42:07 dillon Exp $
+ *	$Id: procfs_subr.c,v 1.24 1999/04/30 13:04:21 phk Exp $
  */
 
 #include <sys/param.h>
@@ -167,6 +167,7 @@ loop:
 
 	case Pregs:
 	case Pfpregs:
+	case Pdbregs:
 		pfs->pfs_mode = (VREAD|VWRITE);
 		vp->v_type = VREG;
 		break;
@@ -264,6 +265,10 @@ procfs_rw(ap)
 		rtval = procfs_dofpregs(curp, p, pfs, uio);
 		break;
 
+        case Pdbregs:
+                rtval = procfs_dodbregs(curp, p, pfs, uio);
+                break;
+
 	case Pctl:
 		rtval = procfs_doctl(curp, p, pfs, uio);
 		break;
diff --git a/sys/fs/procfs/procfs_vnops.c b/sys/fs/procfs/procfs_vnops.c
index d421bac..fc47353 100644
--- a/sys/fs/procfs/procfs_vnops.c
+++ b/sys/fs/procfs/procfs_vnops.c
@@ -36,7 +36,7 @@
  *
  *	@(#)procfs_vnops.c	8.18 (Berkeley) 5/21/95
  *
- *	$Id: procfs_vnops.c,v 1.68 1999/05/04 08:01:55 phk Exp $
+ *	$Id: procfs_vnops.c,v 1.69 1999/06/13 20:53:16 phk Exp $
  */
 
 /*
@@ -95,6 +95,7 @@ static struct proc_target {
 	{ DT_REG, N("mem"),	Pmem,		NULL },
 	{ DT_REG, N("regs"),	Pregs,		procfs_validregs },
 	{ DT_REG, N("fpregs"),	Pfpregs,	procfs_validfpregs },
+	{ DT_REG, N("dbregs"),	Pdbregs,	procfs_validdbregs },
 	{ DT_REG, N("ctl"),	Pctl,		NULL },
 	{ DT_REG, N("status"),	Pstatus,	NULL },
 	{ DT_REG, N("note"),	Pnote,		NULL },
@@ -491,6 +492,7 @@ procfs_getattr(ap)
 	case Pctl:
 	case Pregs:
 	case Pfpregs:
+	case Pdbregs:
 		if (procp->p_flag & P_SUGID)
 			vap->va_mode &= ~((VREAD|VWRITE)|
 					  ((VREAD|VWRITE)>>3)|
@@ -571,6 +573,10 @@ procfs_getattr(ap)
 		vap->va_bytes = vap->va_size = sizeof(struct fpreg);
 		break;
 
+        case Pdbregs:
+                vap->va_bytes = vap->va_size = sizeof(struct dbreg);
+                break;
+
 	case Ptype:
 	case Pmap:
 	case Pctl: