Remove RM7000/RM9000-specific performance counter code. It originates

from PMON2000 and has not been enabled on OpenBSD.

Suggested by and ok miod@ (after seeing a quad_t cleanup patch of mine)

11 files changed, 11 insertions, 366 deletions

diff --git a/sys/arch/mips64/include/proc.h b/sys/arch/mips64/include/proc.h
index 198b98594a4..44dd452163a 100644
--- a/sys/arch/mips64/include/proc.h
+++ b/sys/arch/mips64/include/proc.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: proc.h,v 1.9 2016/03/06 19:42:27 mpi Exp $	*/
+/*	$OpenBSD: proc.h,v 1.10 2016/08/16 13:03:58 visa Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -55,13 +55,7 @@ struct mdproc {
 	vaddr_t	md_fpbranchva;		/* vaddr of fp branch destination */
 	vaddr_t	md_fpslotva;		/* initial vaddr of delay slot */
 
-/* The following is RM7000 dependent, but kept in for compatibility */
-	int	md_pc_ctrl;		/* performance counter control */
-	int	md_pc_count;		/* performance counter */
-	int	md_pc_spill;		/* performance counter spill */
-	quad_t	md_watch_1;
-	quad_t	md_watch_2;
-	int	md_watch_m;
+	int32_t	md_obsolete[10];	/* Were RM7000-specific data. */
 };
 
 /*
diff --git a/sys/arch/mips64/include/rm7000.h b/sys/arch/mips64/include/rm7000.h
deleted file mode 100644
index 524535ea603..00000000000
--- a/sys/arch/mips64/include/rm7000.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/*	$OpenBSD: rm7000.h,v 1.4 2016/03/06 19:42:27 mpi Exp $ */
-
-/*
- * Copyright (c) 2001-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
-
-#ifndef _MIPS64_RM7000_H_
-#define _MIPS64_RM7000_H_
-
-/*
- *  QED RM7000 specific defines.
- */
-
-/*
- *  Performance counters.
- */
-
-#define	PCNT_SRC_CLOCKS		0x00	/* Clock cycles */
-#define	PCNT_SRC_INSTR		0x01	/* Total instructions issued */
-#define	PCNT_SRC_FPINSTR	0x02	/* Float instructions issued */
-#define	PCNT_SRC_IINSTR		0x03	/* Integer instructions issued */
-#define	PCNT_SRC_LOAD		0x04	/* Load instructions issued */
-#define	PCNT_SRC_STORE		0x05	/* Store instructions issued */
-#define	PCNT_SRC_DUAL		0x06	/* Dual issued pairs */
-#define	PCNT_SRC_BRPREF		0x07	/* Branch prefetches */
-#define	PCNT_SRC_EXTMISS	0x08	/* External cache misses */
-#define	PCNT_SRC_STALL		0x09	/* Stall cycles */
-#define	PCNT_SRC_SECMISS	0x0a	/* Secondary cache misses */
-#define	PCNT_SRC_INSMISS	0x0b	/* Instruction cache misses */
-#define	PCNT_SRC_DTAMISS	0x0c	/* Data cache misses */
-#define	PCNT_SRC_DTLBMISS	0x0d	/* Data TLB misses */
-#define	PCNT_SRC_ITLBMISS	0x0e	/* Instruction TLB misses */
-#define	PCNT_SRC_JTLBIMISS	0x0f	/* Joint TLB instruction misses */
-#define	PCNT_SRC_JTLBDMISS	0x10	/* Joint TLB data misses */
-#define	PCNT_SRC_BRTAKEN	0x11	/* Branches taken */
-#define	PCNT_SRC_BRISSUED	0x12	/* Branches issued */
-#define	PCNT_SRC_SECWBACK	0x13	/* Secondary cache writebacks */
-#define	PCNT_SRC_PRIWBACK	0x14	/* Primary cache writebacks */
-#define	PCNT_SRC_DCSTALL	0x15	/* Dcache miss stall cycles */
-#define	PCNT_SRC_MISS		0x16	/* Cache misses */
-#define	PCNT_SRC_FPEXC		0x17	/* FP possible exception cycles */
-#define	PCNT_SRC_MULSLIP	0x18	/* Slip cycles due to mult. busy */
-#define	PCNT_SRC_CP0SLIP	0x19	/* CP0 Slip cycles */
-#define	PCNT_SRC_LDSLIP		0x1a	/* Slip cycles  due to pend. non-b ld */
-#define	PCNT_SRC_WBFULL		0x1b	/* Write buffer full stall cycles  */
-#define	PCNT_SRC_CISTALL	0x1c	/* Cache instruction stall cycles  */
-#define	PCNT_SRC_MULSTALL	0x1d	/* Multiplier stall cycles  */
-#define	PCNT_SRC_ELDSTALL	0x1d	/* Excepion stall due to non-b ld */
-#define	PCNT_SRC_MAX		0x1d	/* Maximum PCNT select code */
-
-/*
- *  Counter control bits.
- */
-
-#define	PCNT_CE			0x0400	/* Count enable */
-#define	PCNT_UM			0x0200	/* Count in User mode */
-#define	PCNT_KM			0x0100	/* Count in kernel mode */
-
-/*
- *  Performance counter system call function codes.
- */
-#define	PCNT_FNC_SELECT		0x0001	/* Select counter source */
-#define	PCNT_FNC_READ		0x0002	/* Read current value of counter */
-
-
-#ifdef _KERNEL
-__BEGIN_DECLS
-int	rm7k_perfcntr(int, long, long, long);
-void	rm7k_perfintr(struct trapframe *);
-int	rm7k_watchintr(struct trapframe *);
-void	cp0_setperfcount(int);
-void	cp0_setperfctrl(int);
-int	cp0_getperfcount(void);
-__END_DECLS
-#endif /* _KERNEL */
-
-#endif /* _MIPS64_RM7000_H_ */
diff --git a/sys/arch/mips64/mips64/context.S b/sys/arch/mips64/mips64/context.S
index 137b7fc2ae8..94d0e5cc586 100644
--- a/sys/arch/mips64/mips64/context.S
+++ b/sys/arch/mips64/mips64/context.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: context.S,v 1.55 2016/08/14 08:23:52 visa Exp $ */
+/*	$OpenBSD: context.S,v 1.56 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 2002-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -345,31 +345,6 @@ LEAF(proc_trampoline, 0)
 	jal	s0
 	 move	a0,s1			# invoke callback.
 
-#if 0	/* && defined(RM7000_ICR) */
-	lw	t0, cpu_is_rm7k
-	beqz	t0, 1f			# not an RM7K. Don't do IC reg.
-	 NOP
-	
-	GET_CPU_INFO(t1, t0)
-	PTR_L	t0, CI_CURPROC(t1)	# set up rm7k.
-	ld	v0, P_WATCH_1(t0)
-	dmtc0	v0, COP_0_WATCH_1
-	ld	v0, P_WATCH_2(t0)
-	dmtc0	v0, COP_0_WATCH_2
-	lw	v0, P_WATCH_M(t0)
-	mtc0	v0, COP_0_WATCH_M
-	lw	v0, P_PC_CTRL(t0)
-	lw	v1, P_PC_COUNT(t0)
-	nop;nop
-	mtc0	v0, COP_0_PC_CTRL
-	nop;nop;nop;nop
-	mtc0	v1, COP_0_PC_COUNT
-	nop;nop;nop;nop
-	li	v0, IC_INT_PERF
-	ctc0	v0, COP_0_ICR		# enable perfcntr interrupt.
-1:
-#endif
-
 	MFC0	t0, COP_0_STATUS_REG
 	MFC0_HAZARD
 	LI	t1, ~SR_INT_ENAB
diff --git a/sys/arch/mips64/mips64/cp0access.S b/sys/arch/mips64/mips64/cp0access.S
index b92dcfbecb9..642b800ea79 100644
--- a/sys/arch/mips64/mips64/cp0access.S
+++ b/sys/arch/mips64/mips64/cp0access.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cp0access.S,v 1.19 2012/10/03 11:18:23 miod Exp $ */
+/*	$OpenBSD: cp0access.S,v 1.20 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 2001-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -220,26 +220,3 @@ LEAF(cp0_set_trapbase, 0)
 	 NOP
 END(cp0_set_trapbase)
 #endif
-
-#ifdef notused
-LEAF(cp0_getperfcount, 0)
-	MFC0	v0, COP_0_PC_COUNT
-	MFC0_HAZARD
-	j	ra
-	NOP
-END(cp0_getperfcount)
-
-LEAF(cp0_setperfcount, 0)
-	MTC0	a0, COP_0_PC_COUNT
-	MTC0_HAZARD
-	j	ra
-	NOP
-END(cp0_setperfcount)
-
-LEAF(cp0_setperfctrl, 0)
-	MTC0	a0, COP_0_PC_CTRL
-	MTC0_HAZARD
-	j	ra
-	NOP
-END(cp0_setperfctrl)
-#endif
diff --git a/sys/arch/mips64/mips64/cpu.c b/sys/arch/mips64/mips64/cpu.c
index 04467e07cbf..3c8111d09b9 100644
--- a/sys/arch/mips64/mips64/cpu.c
+++ b/sys/arch/mips64/mips64/cpu.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.c,v 1.59 2015/12/25 08:34:50 visa Exp $ */
+/*	$OpenBSD: cpu.c,v 1.60 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 1997-2004 Opsycon AB (www.opsycon.se)
@@ -51,7 +51,6 @@ struct cpuset cpus_running;
 #endif
 
 vaddr_t	cache_valias_mask;
-int	cpu_is_rm7k = 0;
 
 struct cfattach cpu_ca = {
 	sizeof(struct device), cpumatch, cpuattach
@@ -175,7 +174,6 @@ cpuattach(struct device *parent, struct device *dev, void *aux)
 			printf("PMC-Sierra RM7000 CPU");
 		else
 			printf("PMC-Sierra RM7000A CPU");
-		cpu_is_rm7k++;
 		break;
 	case MIPS_R8000:
 		printf("MIPS R8000 CPU");
diff --git a/sys/arch/mips64/mips64/exception.S b/sys/arch/mips64/mips64/exception.S
index 41c37aedac7..3c158a1cc96 100644
--- a/sys/arch/mips64/mips64/exception.S
+++ b/sys/arch/mips64/mips64/exception.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: exception.S,v 1.38 2014/03/26 19:38:18 miod Exp $ */
+/*	$OpenBSD: exception.S,v 1.39 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 2002-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -266,55 +266,12 @@ NNON_LEAF(u_intr, FRAMESZ(CF_SZ), ra)
 	PTR_L	t0, CI_CURPROCPADDR(t1)	# curprocpaddr
 	SAVE_CPU_SREG(t0, 0)
 
-#ifdef PERFCNTRS
-	lw	t0, cpu_is_rm7k
-	beqz	t0, 1f			# not an RM7K. Don't do perf save.
-	nop
-
-	mfc0	v0, COP_0_PC_CTRL
-	PTR_L	t0, curproc
-	sw	v0, P_PC_CTRL(t0)
-	dmfc0	v0, COP_0_WATCH_1
-	dmfc0	v1, COP_0_WATCH_2
-	sd	v0, P_WATCH_1(t0)
-	sd	v1, P_WATCH_2(t0)
-	mfc0	v0, COP_0_WATCH_M
-	mfc0	v1, COP_0_PC_COUNT
-	sw	v0, P_WATCH_M(t0)
-	sw	v1, P_PC_COUNT(t0)
-	mtc0	zero, COP_0_PC_CTRL
-	dmtc0	zero, COP_0_WATCH_1
-	dmtc0	zero, COP_0_WATCH_2
-	nop;nop;nop;nop
-1:
-#endif
 	jal	ast
 	nop
 
 /*
  * Restore user registers and return. NOTE: interrupts are enabled.
  */
-#ifdef PERFCNTRS
-	lw	t0, cpu_is_rm7k
-	beqz	t0, 1f			# not an RM7K. Don't do perf setup.
-
-	GET_CPU_INFO(t1, t0)
-	PTR_L	t0, CI_CURPROC(t1)	# set up rm7k.
-	ld	v0, P_WATCH_1(t1)
-	dmtc0	v0, COP_0_WATCH_1
-	ld	v0, P_WATCH_2(t1)
-	dmtc0	v0, COP_0_WATCH_2
-	lw	v0, P_WATCH_M(t1)
-	mtc0	v0, COP_0_WATCH_M
-	lw	v0, P_PC_CTRL(t1)
-	lw	v1, P_PC_COUNT(t1)
-	nop;nop
-	mtc0	v0, COP_0_PC_CTRL
-	nop;nop;nop;nop
-	mtc0	v1, COP_0_PC_COUNT
-	nop;nop;nop;nop
-1:
-#endif
 	GET_CPU_INFO(t1, t0)
 	PTR_L	t0, CI_CURPROCPADDR(t1)
 	RESTORE_CPU_SREG(t0, 0)
@@ -419,27 +376,6 @@ NNON_LEAF(u_general, FRAMESZ(CF_SZ), ra)
 	MTC0	t0, COP_0_STATUS_REG
 	MTC0_SR_IE_HAZARD
 
-#ifdef PERFCNTRS
-	lw	t0, cpu_is_rm7k
-	beqz	t0, 1f			# not an RM7K. Don't do perf save.
-	nop
-
-	mfc0	v0, COP_0_PC_CTRL
-	PTR_L	t0, CI_CURPROC(k1)
-	sw	v0, P_PC_CTRL(t0)
-	dmfc0	v0, COP_0_WATCH_1
-	dmfc0	v1, COP_0_WATCH_2
-	sd	v0, P_WATCH_1(t0)
-	sd	v1, P_WATCH_2(t0)
-	mfc0	v0, COP_0_WATCH_M
-	mfc0	v1, COP_0_PC_COUNT
-	sw	v0, P_WATCH_M(t0)
-	sw	v1, P_PC_COUNT(t0)
-	mtc0	zero, COP_0_PC_CTRL
-	nop;nop;nop;nop
-1:
-#endif
-
 	jal	trap
 	PTR_S	a3, CF_RA_OFFS(sp)		# for debugging
 
@@ -457,27 +393,6 @@ NNON_LEAF(u_general, FRAMESZ(CF_SZ), ra)
 	nop
 
 4:
-#ifdef PERFCNTRS
-	lw	t0, cpu_is_rm7k
-	beqz	t0, 1f			# not an RM7K. Don't do perf setup.
-
-	GET_CPU_INFO(t1, t0)
-	PTR_L	t0, CI_CURPROC(k1)	# set up rm7k.
-	ld	v0, P_WATCH_1(t0)
-	dmtc0	v0, COP_0_WATCH_1
-	ld	v0, P_WATCH_2(t0)
-	dmtc0	v0, COP_0_WATCH_2
-	lw	v0, P_WATCH_M(t0)
-	mtc0	v0, COP_0_WATCH_M
-	lw	v0, P_PC_CTRL(t0)
-	lw	v1, P_PC_COUNT(t0)
-	nop;nop
-	mtc0	v0, COP_0_PC_CTRL
-	nop;nop;nop;nop
-	mtc0	v1, COP_0_PC_COUNT
-	nop;nop;nop;nop
-1:
-#endif
 	MFC0	t0, COP_0_STATUS_REG	# disable interrupts
 	LI	t1, ~SR_INT_ENAB
 	and	t0, t0, t1
diff --git a/sys/arch/mips64/mips64/genassym.cf b/sys/arch/mips64/mips64/genassym.cf
index 5d400173f2d..16c107d2b93 100644
--- a/sys/arch/mips64/mips64/genassym.cf
+++ b/sys/arch/mips64/mips64/genassym.cf
@@ -1,4 +1,4 @@
-#	$OpenBSD: genassym.cf,v 1.12 2014/07/09 08:49:20 deraadt Exp $
+#	$OpenBSD: genassym.cf,v 1.13 2016/08/16 13:03:58 visa Exp $
 #
 # Copyright (c) 1997 Per Fogelstrom / Opsycon AB
 #
@@ -43,11 +43,6 @@ member	p_cpu
 member	p_stat
 member	p_vmspace
 member	P_ASTPENDING	p_md.md_astpending
-member	P_PC_CTRL	p_md.md_pc_ctrl
-member	P_PC_COUNT	p_md.md_pc_count
-member	P_WATCH_1	p_md.md_watch_1
-member	P_WATCH_2	p_md.md_watch_2
-member	P_WATCH_M	p_md.md_watch_m
 
 struct	pcb
 member	pcb_regs
diff --git a/sys/arch/mips64/mips64/interrupt.c b/sys/arch/mips64/mips64/interrupt.c
index f82f1861381..f8b8ebda1be 100644
--- a/sys/arch/mips64/mips64/interrupt.c
+++ b/sys/arch/mips64/mips64/interrupt.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: interrupt.c,v 1.66 2016/03/06 19:42:27 mpi Exp $ */
+/*	$OpenBSD: interrupt.c,v 1.67 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 2001-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -40,8 +40,6 @@
 #include <machine/intr.h>
 #include <machine/frame.h>
 
-#include <mips64/rm7000.h>
-
 #ifdef DDB
 #include <mips64/db_machdep.h>
 #include <ddb/db_sym.h>
@@ -129,11 +127,6 @@ interrupt(struct trapframe *trapframe)
 		atomic_inc_long((unsigned long *)&soft_count.ec_count);
 	}
 
-#ifdef RM7K_PERFCNTR
-	if (pending & CR_INT_PERF)
-		rm7k_perfintr(trapframe);
-#endif
-
 	for (i = 0; i <= last_low_int; i++) {
 		uint32_t active;
 		active = cpu_int_tab[i].int_mask & pending;
diff --git a/sys/arch/mips64/mips64/mips64_machdep.c b/sys/arch/mips64/mips64/mips64_machdep.c
index f6e2e3e2913..4fc2648094c 100644
--- a/sys/arch/mips64/mips64/mips64_machdep.c
+++ b/sys/arch/mips64/mips64/mips64_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mips64_machdep.c,v 1.20 2016/03/06 19:42:27 mpi Exp $ */
+/*	$OpenBSD: mips64_machdep.c,v 1.21 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 2009, 2010, 2012 Miodrag Vallat.
@@ -159,10 +159,6 @@ setregs(p, pack, stack, retval)
 #endif
 	if (ci->ci_fpuproc == p)
 		ci->ci_fpuproc = NULL;
-	p->p_md.md_ss_addr = 0;
-	p->p_md.md_pc_ctrl = 0;
-	p->p_md.md_watch_1 = 0;
-	p->p_md.md_watch_2 = 0;
 
 	retval[1] = 0;
 }
diff --git a/sys/arch/mips64/mips64/trap.c b/sys/arch/mips64/mips64/trap.c
index 195f914124b..56e05264694 100644
--- a/sys/arch/mips64/mips64/trap.c
+++ b/sys/arch/mips64/mips64/trap.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: trap.c,v 1.117 2016/08/14 08:23:52 visa Exp $	*/
+/*	$OpenBSD: trap.c,v 1.118 2016/08/16 13:03:58 visa Exp $	*/
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -70,8 +70,6 @@
 #include <machine/regnum.h>
 #include <machine/trap.h>
 
-#include <mips64/rm7000.h>
-
 #ifdef DDB
 #include <mips64/db_machdep.h>
 #include <ddb/db_output.h>
@@ -677,12 +675,6 @@ fault_common_no_miss:
 		if (trapframe->cause & CR_BR_DELAY)
 			va += 4;
 		printf("watch exception @ %p\n", va);
-#ifdef RM7K_PERFCNTR
-		if (rm7k_watchintr(trapframe)) {
-			/* Return to user, don't add any more overhead */
-			return;
-		}
-#endif
 		i = SIGTRAP;
 		typ = TRAP_BRKPT;
 		break;
@@ -706,17 +698,6 @@ fault_common_no_miss:
 			    trapframe->pc, 0, 0);
 		else
 			locr0->pc += 4;
-#ifdef RM7K_PERFCNTR
-		if (instr == 0x040c0000) { /* Performance cntr trap */
-			int result;
-
-			result = rm7k_perfcntr(trapframe->a0, trapframe->a1,
-						trapframe->a2, trapframe->a3);
-			locr0->v0 = -result;
-			/* Return to user, don't add any more overhead */
-			return;
-		} else
-#endif
 		/*
 		 * GCC 4 uses teq with code 7 to signal divide by
 	 	 * zero at runtime. This is one instruction shorter
diff --git a/sys/arch/sgi/sgi/machdep.c b/sys/arch/sgi/sgi/machdep.c
index 069aaa1b755..100de8d242a 100644
--- a/sys/arch/sgi/sgi/machdep.c
+++ b/sys/arch/sgi/sgi/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.151 2016/03/06 19:42:27 mpi Exp $ */
+/*	$OpenBSD: machdep.c,v 1.152 2016/08/16 13:03:58 visa Exp $ */
 
 /*
  * Copyright (c) 2003-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -71,10 +71,6 @@ CACHE_PROTOS(ip22)
 CACHE_PROTOS(tcc)
 #endif
 
-#ifdef CPU_RM7000
-#include <mips64/rm7000.h>
-#endif
-
 #include <dev/cons.h>
 
 #include <mips64/arcbios.h>
@@ -1012,79 +1008,3 @@ is_memory_range(paddr_t pa, psize_t len, psize_t limit)
 
 	return FALSE;
 }
-
-#ifdef CPU_RM7000
-#ifdef	RM7K_PERFCNTR
-/*
- * RM7000 Performance counter support.
- */
-int
-rm7k_perfcntr(cmd, arg1, arg2, arg3)
-	int cmd;
-	long  arg1, arg2, arg3;
-{
-	int result;
-	quad_t cntval;
-	struct proc *p = curproc;
-
-
-	switch(cmd) {
-	case PCNT_FNC_SELECT:
-		if ((arg1 & 0xff) > PCNT_SRC_MAX ||
-		   (arg1 & ~(PCNT_CE|PCNT_UM|PCNT_KM|0xff)) != 0) {
-			result = EINVAL;
-			break;
-		}
-#ifdef DEBUG
-printf("perfcnt select %x, proc %p\n", arg1, p);
-#endif
-		p->p_md.md_pc_count = 0;
-		p->p_md.md_pc_spill = 0;
-		p->p_md.md_pc_ctrl = arg1;
-		result = 0;
-		break;
-
-	case PCNT_FNC_READ:
-		cntval = p->p_md.md_pc_count;
-		cntval += (quad_t)p->p_md.md_pc_spill << 31;
-		result = copyout(&cntval, (void *)arg1, sizeof(cntval));
-		break;
-
-	default:
-#ifdef DEBUG
-printf("perfcnt error %d\n", cmd);
-#endif
-		result = -1;
-		break;
-	}
-	return(result);
-}
-
-/*
- * Called when the performance counter d31 gets set.
- * Increase spill value and reset d31.
- */
-void
-rm7k_perfintr(trapframe)
-	struct trapframe *trapframe;
-{
-	struct proc *p = curproc;
-
-#ifdef DEBUG
-	printf("perfintr proc %p!\n", p);
-#endif
-	cp0_setperfcount(cp0_getperfcount() & 0x7fffffff);
-	if (p != NULL) {
-		p->p_md.md_pc_spill++;
-	}
-}
-
-int
-rm7k_watchintr(trapframe)
-	struct trapframe *trapframe;
-{
-	return(0);
-}
-
-#endif	/* RM7K_PERFCNTR */
-#endif	/* CPU_RM7000 */