From d74cd05c88b5c2a88857cf558297d8d8b0a1f771 Mon Sep 17 00:00:00 2001
From: mycroft <mycroft@NetBSD.org>
Date: Thu, 6 Jan 1994 23:55:17 +0000
Subject: [PATCH] Implement procfs stubs.

---
 sys/arch/hp300/hp300/procfs_machdep.c | 80 +++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 sys/arch/hp300/hp300/procfs_machdep.c

diff --git a/sys/arch/hp300/hp300/procfs_machdep.c b/sys/arch/hp300/hp300/procfs_machdep.c
new file mode 100644
index 000000000000..4800f23f3ac0
--- /dev/null
+++ b/sys/arch/hp300/hp300/procfs_machdep.c
@@ -0,0 +1,80 @@
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/vnode.h>
+#include <machine/psl.h>
+#include <machine/reg.h>
+#include <miscfs/procfs/procfs.h>
+
+extern char kstack[];		/* XXX */
+
+int
+procfs_sstep(p)
+	struct proc *p;
+{
+	struct frame *frame;
+
+	if ((p->p_flag & SLOAD) == 0)
+		return EIO;
+
+	frame = (struct frame *)
+	    ((char *)p->p_addr + ((char *)p->p_regs - (char *)kstack));
+
+	frame->f_sr |= PSL_T;
+
+	return 0;
+}
+
+int
+procfs_fix_sstep(p)
+	struct proc *p;
+{
+
+	return 0;
+}
+
+int
+procfs_read_regs(p, regs)
+	struct proc *p;
+	struct reg *regs;
+{
+	struct frame *frame;
+
+	if ((p->p_flag & SLOAD) == 0)
+		return EIO;
+
+	frame = (struct frame *)
+	    ((char *)p->p_addr + ((char *)p->p_regs - (char *)kstack));
+
+	bcopy(frame->f_regs, regs->r_regs, sizeof(frame->f_regs));
+	regs->r_sr = frame->f_sr;
+	regs->r_pc = frame->f_pc;
+
+	return 0;
+}
+
+int
+procfs_write_regs(p, regs)
+	struct proc *p;
+	struct reg *regs;
+{
+	struct frame *frame;
+
+	if ((p->p_flag & SLOAD) == 0)
+		return EIO;
+
+	frame = (struct frame *)
+	    ((char *)p->p_addr + ((char *)p->p_regs - (char *)kstack));
+
+	if ((regs->r_sr & PSL_USERCLR) != 0 ||
+	    (regs->r_sr & PSL_USERSET) != PSL_USERSET)
+		return EPERM;
+
+	bcopy(regs->r_regs, frame->f_regs, sizeof(frame->f_regs));
+	frame->f_sr = regs->r_sr;
+	frame->f_pc = regs->r_pc;
+
+	return 0;
+}