From 86ac32df3d32694581a3aee123c3bd1622e8cbaf Mon Sep 17 00:00:00 2001
From: tsubai <tsubai@NetBSD.org>
Date: Sun, 4 Jun 2000 09:30:43 +0000
Subject: [PATCH] Add PT_GETFPREGS and PT_SETFPREGS support.

---
 sys/arch/powerpc/include/ptrace.h          |  4 ++-
 sys/arch/powerpc/include/reg.h             |  7 +++-
 sys/arch/powerpc/powerpc/process_machdep.c | 42 +++++++++++++++++++++-
 3 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/sys/arch/powerpc/include/ptrace.h b/sys/arch/powerpc/include/ptrace.h
index bdad33ca8442..b46c54ccda67 100644
--- a/sys/arch/powerpc/include/ptrace.h
+++ b/sys/arch/powerpc/include/ptrace.h
@@ -1,5 +1,7 @@
-/*	$NetBSD: ptrace.h,v 1.3 1999/05/03 10:02:19 tsubai Exp $	*/
+/*	$NetBSD: ptrace.h,v 1.4 2000/06/04 09:30:43 tsubai Exp $	*/
 
 #define	PT_STEP		(PT_FIRSTMACH + 0)
 #define	PT_GETREGS	(PT_FIRSTMACH + 1)
 #define	PT_SETREGS	(PT_FIRSTMACH + 2)
+#define	PT_GETFPREGS	(PT_FIRSTMACH + 3)
+#define	PT_SETFPREGS	(PT_FIRSTMACH + 4)
diff --git a/sys/arch/powerpc/include/reg.h b/sys/arch/powerpc/include/reg.h
index 5399bbb8a59c..2785d94e665e 100644
--- a/sys/arch/powerpc/include/reg.h
+++ b/sys/arch/powerpc/include/reg.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: reg.h,v 1.3 1999/05/03 10:02:19 tsubai Exp $	*/
+/*	$NetBSD: reg.h,v 1.4 2000/06/04 09:30:44 tsubai Exp $	*/
 
 struct reg {
 	register_t fixreg[32];
@@ -8,3 +8,8 @@ struct reg {
 	register_t ctr;
 	register_t pc;
 };
+
+struct fpreg {
+	double fpreg[32];
+	double fpscr;
+};
diff --git a/sys/arch/powerpc/powerpc/process_machdep.c b/sys/arch/powerpc/powerpc/process_machdep.c
index eccb951560bf..68f3c6067f0b 100644
--- a/sys/arch/powerpc/powerpc/process_machdep.c
+++ b/sys/arch/powerpc/powerpc/process_machdep.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: process_machdep.c,v 1.2 1999/05/03 10:02:19 tsubai Exp $	*/
+/*	$NetBSD: process_machdep.c,v 1.3 2000/06/04 09:30:45 tsubai Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -33,8 +33,10 @@
 
 #include <sys/param.h>
 #include <sys/proc.h>
+#include <sys/user.h>
 #include <sys/systm.h>
 
+#include <machine/pcb.h>
 #include <machine/reg.h>
 
 int
@@ -71,6 +73,44 @@ process_write_regs(p, regs)
 	return 0;
 }
 
+int
+process_read_fpregs(p, regs)
+	struct proc *p;
+	struct fpreg *regs;
+{
+	struct pcb *pcb = &p->p_addr->u_pcb;
+
+	/* Is the process using the fpu? */
+	if ((pcb->pcb_flags & PCB_FPU) == 0) {
+		bzero(regs, sizeof (struct fpreg));
+		return 0;
+	}
+
+	if (p == fpuproc)
+		save_fpu(p);
+	bcopy(&pcb->pcb_fpu, regs, sizeof (struct fpreg));
+
+	return 0;
+}
+
+int
+process_write_fpregs(p, regs)
+	struct proc *p;
+	struct fpreg *regs;
+{
+	struct pcb *pcb = &p->p_addr->u_pcb;
+
+	if (p == fpuproc)
+		fpuproc = NULL;
+
+	bcopy(regs, &pcb->pcb_fpu, sizeof(struct fpreg));
+
+	/* pcb_fpu is initialized now. */
+	pcb->pcb_flags |= PCB_FPU;
+
+	return 0;
+}
+
 /*
  * Set the process's program counter.
  */