Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1679 insertions, 0 deletions

diff --git a/arch/parisc/kernel/perf_asm.S b/arch/parisc/kernel/perf_asm.S
new file mode 100644
index 000000000..8fceabb1a
--- /dev/null
+++ b/arch/parisc/kernel/perf_asm.S
@@ -0,0 +1,1679 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/*    low-level asm for "intrigue" (PA8500-8700 CPU perf counters)
+ * 
+ *    Copyright (C) 2001 Randolph Chung <tausq at parisc-linux.org>
+ *    Copyright (C) 2001 Hewlett-Packard (Grant Grundler)
+ */
+
+#include <asm/assembly.h>
+
+#include <linux/init.h>
+#include <linux/linkage.h>
+
+#ifdef CONFIG_64BIT
+	.level		2.0w
+#endif /* CONFIG_64BIT */
+
+#define MTDIAG_1(gr)    .word 0x14201840 + gr*0x10000
+#define MTDIAG_2(gr)    .word 0x14401840 + gr*0x10000
+#define MFDIAG_1(gr)    .word 0x142008A0 + gr
+#define MFDIAG_2(gr)    .word 0x144008A0 + gr
+#define STDIAG(dr)      .word 0x14000AA0 + dr*0x200000
+#define SFDIAG(dr)      .word 0x14000BA0 + dr*0x200000
+#define DR2_SLOW_RET    53
+
+
+;
+; Enable the performance counters
+;
+; The coprocessor only needs to be enabled when
+; starting/stopping the coprocessor with the pmenb/pmdis.
+;
+	.text
+
+ENTRY(perf_intrigue_enable_perf_counters)
+	.proc
+	.callinfo  frame=0,NO_CALLS
+	.entry
+
+	ldi     0x20,%r25                ; load up perfmon bit
+	mfctl   ccr,%r26                 ; get coprocessor register
+	or      %r25,%r26,%r26             ; set bit
+	mtctl   %r26,ccr                 ; turn on performance coprocessor
+	pmenb                           ; enable performance monitor
+	ssm     0,0                     ; dummy op to ensure completion
+	sync                            ; follow ERS
+	andcm   %r26,%r25,%r26             ; clear bit now 
+	mtctl   %r26,ccr                 ; turn off performance coprocessor
+	nop                             ; NOPs as specified in ERS
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	bve    (%r2)
+	nop
+	.exit
+	.procend
+ENDPROC(perf_intrigue_enable_perf_counters)
+
+ENTRY(perf_intrigue_disable_perf_counters)
+	.proc
+	.callinfo  frame=0,NO_CALLS
+	.entry
+	ldi     0x20,%r25                ; load up perfmon bit
+	mfctl   ccr,%r26                 ; get coprocessor register
+	or      %r25,%r26,%r26             ; set bit
+	mtctl   %r26,ccr                 ; turn on performance coprocessor
+	pmdis                           ; disable performance monitor
+	ssm     0,0                     ; dummy op to ensure completion
+	andcm   %r26,%r25,%r26             ; clear bit now 
+	bve    (%r2)
+	mtctl   %r26,ccr                 ; turn off performance coprocessor
+	.exit
+	.procend
+ENDPROC(perf_intrigue_disable_perf_counters)
+
+;***********************************************************************
+;*
+;* Name: perf_rdr_shift_in_W
+;*
+;* Description:
+;*	This routine shifts data in from the RDR in arg0 and returns
+;*	the result in ret0.  If the RDR is <= 64 bits in length, it
+;*	is shifted shifted backup immediately.  This is to compensate
+;*	for RDR10 which has bits that preclude PDC stack operations
+;*	when they are in the wrong state.
+;*
+;* Arguments:
+;*	arg0 : rdr to be read
+;*	arg1 : bit length of rdr
+;*
+;* Returns:
+;*	ret0 = next 64 bits of rdr data from staging register
+;*
+;* Register usage:
+;*	arg0 : rdr to be read
+;*	arg1 : bit length of rdr
+;*	%r24  - original DR2 value
+;*	%r1   - scratch
+;*  %r29  - scratch
+;*
+;* Returns:
+;*	ret0 = RDR data (right justified)
+;*
+;***********************************************************************
+
+ENTRY(perf_rdr_shift_in_W)
+	.proc
+	.callinfo frame=0,NO_CALLS
+	.entry
+;
+; read(shift in) the RDR.
+;
+
+; NOTE: The PCX-W ERS states that DR2_SLOW_RET must be set before any
+; shifting is done, from or to, remote diagnose registers.
+;
+
+	depdi,z		1,DR2_SLOW_RET,1,%r29
+	MFDIAG_2	(24)
+	or		    %r24,%r29,%r29
+	MTDIAG_2	(29)			; set DR2_SLOW_RET
+
+	nop
+	nop
+	nop
+	nop
+
+;
+; Cacheline start (32-byte cacheline)
+;
+	nop
+	nop
+	nop
+	extrd,u		arg1,63,6,%r1	; setup shift amount by bits to move 
+
+	mtsar		%r1
+	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
+	blr  		%r1,%r0		; branch to 8-instruction sequence
+	nop
+
+;
+; Cacheline start (32-byte cacheline)
+;
+
+	;
+	; RDR 0 sequence
+	;
+	SFDIAG		(0)
+	ssm		    0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)			; mtdiag %dr1, %r1 
+	STDIAG		(0)
+	ssm		    0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 1 sequence
+	;
+	sync
+	ssm		    0,0
+	SFDIAG		(1)
+	ssm		    0,0
+	MFDIAG_1	(28)
+	ssm		    0,0
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+
+	;
+	; RDR 2 read sequence
+	;
+	SFDIAG		(2)
+	ssm		    0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(2)
+	ssm		    0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 3 read sequence
+	;
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	;
+	; RDR 4 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(4)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	; 
+	; RDR 5 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(5)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 6 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(6)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 7 read sequence
+	;
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	;
+	; RDR 8 read sequence
+	;
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	;
+	; RDR 9 read sequence
+	;
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	;
+	; RDR 10 read sequence
+	;
+	SFDIAG		(10)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(10)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 11 read sequence
+	;
+	SFDIAG		(11)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(11)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 12 read sequence
+	;
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	;
+	; RDR 13 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(13)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 14 read sequence
+	;
+	SFDIAG		(14)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(14)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 15 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(15)
+	ssm		0,0
+	MFDIAG_1	(28)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+
+	;
+	; RDR 16 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(16)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 17 read sequence
+	;
+	SFDIAG		(17)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(17)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 18 read sequence
+	;
+	SFDIAG		(18)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(18)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 19 read sequence
+	;
+	b,n         perf_rdr_shift_in_W_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	;
+	; RDR 20 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(20)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 21 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(21)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 22 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(22)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 23 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(23)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 24 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(24)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 25 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(25)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 26 read sequence
+	;
+	SFDIAG		(26)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(26)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 27 read sequence
+	;
+	SFDIAG		(27)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(27)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 28 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(28)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 29 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(29)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 30 read sequence
+	;
+	SFDIAG		(30)
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(30)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_W_leave
+
+	;
+	; RDR 31 read sequence
+	;
+	sync
+	ssm		0,0
+	SFDIAG		(31)
+	ssm		0,0
+	MFDIAG_1	(28)
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; Fallthrough
+	;
+
+perf_rdr_shift_in_W_leave:
+	bve		    (%r2)
+	.exit
+	MTDIAG_2	(24)			; restore DR2
+	.procend
+ENDPROC(perf_rdr_shift_in_W)
+
+
+;***********************************************************************
+;*
+;* Name: perf_rdr_shift_out_W
+;*
+;* Description:
+;*	This routine moves data to the RDR's.  The double-word that
+;*	arg1 points to is loaded and moved into the staging register.
+;*	Then the STDIAG instruction for the RDR # in arg0 is called
+;*	to move the data to the RDR.
+;*
+;* Arguments:
+;*	arg0 = rdr number
+;*	arg1 = 64-bit value to write
+;*	%r24 - DR2 | DR2_SLOW_RET
+;*	%r23 - original DR2 value
+;*
+;* Returns:
+;*	None
+;*
+;* Register usage:
+;*
+;***********************************************************************
+
+ENTRY(perf_rdr_shift_out_W)
+	.proc
+	.callinfo frame=0,NO_CALLS
+	.entry
+;
+; NOTE: The PCX-W ERS states that DR2_SLOW_RET must be set before any
+; shifting is done, from or to, the remote diagnose registers.
+;
+
+	depdi,z		1,DR2_SLOW_RET,1,%r24
+	MFDIAG_2	(23)
+	or		%r24,%r23,%r24
+	MTDIAG_2	(24)		; set DR2_SLOW_RET
+	MTDIAG_1	(25)		; data to the staging register
+	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
+	blr		    %r1,%r0	; branch to 8-instruction sequence
+	nop
+
+	;
+	; RDR 0 write sequence
+	;
+	sync				; RDR 0 write sequence
+	ssm		0,0
+	STDIAG		(0)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 1 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(1)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 2 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(2)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 3 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(3)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 4 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(4)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 5 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(5)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 6 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(6)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 7 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(7)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 8 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(8)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 9 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(9)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 10 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(10)
+	STDIAG		(26)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 11 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(11)
+	STDIAG		(27)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 12 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(12)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 13 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(13)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 14 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(14)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 15 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(15)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 16 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(16)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 17 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(17)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 18 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(18)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 19 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(19)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 20 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(20)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 21 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(21)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 22 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(22)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 23 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(23)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 24 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(24)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 25 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(25)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 26 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(10)
+	STDIAG		(26)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 27 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(11)
+	STDIAG		(27)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	ssm		0,0
+	nop
+
+	;
+	; RDR 28 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(28)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 29 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(29)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 30 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(30)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+	;
+	; RDR 31 write sequence
+	;
+	sync
+	ssm		0,0
+	STDIAG		(31)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_W_leave
+	nop
+	ssm		0,0
+	nop
+
+perf_rdr_shift_out_W_leave:
+	bve		(%r2)
+	.exit
+	MTDIAG_2	(23)			; restore DR2
+	.procend
+ENDPROC(perf_rdr_shift_out_W)
+
+
+;***********************************************************************
+;*
+;* Name: rdr_shift_in_U
+;*
+;* Description:
+;*	This routine shifts data in from the RDR in arg0 and returns
+;*	the result in ret0.  If the RDR is <= 64 bits in length, it
+;*	is shifted shifted backup immediately.  This is to compensate
+;*	for RDR10 which has bits that preclude PDC stack operations
+;*	when they are in the wrong state.
+;*
+;* Arguments:
+;*	arg0 : rdr to be read
+;*	arg1 : bit length of rdr
+;*
+;* Returns:
+;*	ret0 = next 64 bits of rdr data from staging register
+;*
+;* Register usage:
+;*	arg0 : rdr to be read						                        
+;*	arg1 : bit length of rdr					                        
+;*	%r24 - original DR2 value
+;*	%r23 - DR2 | DR2_SLOW_RET
+;*	%r1  - scratch
+;*
+;***********************************************************************
+
+ENTRY(perf_rdr_shift_in_U)
+	.proc
+	.callinfo frame=0,NO_CALLS
+	.entry
+
+; read(shift in) the RDR.
+;
+; NOTE: The PCX-U ERS states that DR2_SLOW_RET must be set before any
+; shifting is done, from or to, remote diagnose registers.
+
+	depdi,z		1,DR2_SLOW_RET,1,%r29
+	MFDIAG_2	(24)
+	or			%r24,%r29,%r29
+	MTDIAG_2	(29)			; set DR2_SLOW_RET
+
+	nop
+	nop
+	nop
+	nop
+
+;
+; Start of next 32-byte cacheline
+;
+	nop
+	nop
+	nop
+	extrd,u		arg1,63,6,%r1
+
+	mtsar		%r1
+	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
+	blr 		%r1,%r0		; branch to 8-instruction sequence
+	nop
+
+;
+; Start of next 32-byte cacheline
+;
+	SFDIAG		(0)		; RDR 0 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(0)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(1)		; RDR 1 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(1)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	sync				; RDR 2 read sequence
+	ssm		0,0
+	SFDIAG		(4)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 3 read sequence
+	ssm		0,0
+	SFDIAG		(3)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 4 read sequence
+	ssm		0,0
+	SFDIAG		(4)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 5 read sequence
+	ssm		0,0
+	SFDIAG		(5)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 6 read sequence
+	ssm		0,0
+	SFDIAG		(6)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 7 read sequence
+	ssm		0,0
+	SFDIAG		(7)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	b,n         perf_rdr_shift_in_U_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	SFDIAG		(9)		; RDR 9 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(9)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(10)		; RDR 10 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(10)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(11)		; RDR 11 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(11)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(12)		; RDR 12 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(12)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(13)		; RDR 13 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(13)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(14)		; RDR 14 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(14)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(15)		; RDR 15 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(15)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	sync				; RDR 16 read sequence
+	ssm		0,0
+	SFDIAG		(16)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	SFDIAG		(17)		; RDR 17 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(17)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(18)		; RDR 18 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(18)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	b,n         perf_rdr_shift_in_U_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	sync				; RDR 20 read sequence
+	ssm		0,0
+	SFDIAG		(20)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 21 read sequence
+	ssm		0,0
+	SFDIAG		(21)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 22 read sequence
+	ssm		0,0
+	SFDIAG		(22)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 23 read sequence
+	ssm		0,0
+	SFDIAG		(23)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 24 read sequence
+	ssm		0,0
+	SFDIAG		(24)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	sync				; RDR 25 read sequence
+	ssm		0,0
+	SFDIAG		(25)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	SFDIAG		(26)		; RDR 26 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(26)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(27)		; RDR 27 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(27)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	sync				; RDR 28 read sequence
+	ssm		0,0
+	SFDIAG		(28)
+	ssm		0,0
+	MFDIAG_1	(28)
+	b,n         perf_rdr_shift_in_U_leave
+	ssm		0,0
+	nop
+
+	b,n         perf_rdr_shift_in_U_leave
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	SFDIAG		(30)		; RDR 30 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(30)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+
+	SFDIAG		(31)		; RDR 31 read sequence
+	ssm		0,0
+	MFDIAG_1	(28)
+	shrpd		ret0,%r0,%sar,%r1
+	MTDIAG_1	(1)
+	STDIAG		(31)
+	ssm		0,0
+	b,n         perf_rdr_shift_in_U_leave
+	nop
+
+perf_rdr_shift_in_U_leave:
+	bve		    (%r2)
+	.exit
+	MTDIAG_2	(24)			; restore DR2
+	.procend
+ENDPROC(perf_rdr_shift_in_U)
+
+;***********************************************************************
+;*
+;* Name: rdr_shift_out_U
+;*
+;* Description:
+;*	This routine moves data to the RDR's.  The double-word that
+;*	arg1 points to is loaded and moved into the staging register.
+;*	Then the STDIAG instruction for the RDR # in arg0 is called
+;*	to move the data to the RDR.
+;*
+;* Arguments:
+;*	arg0 = rdr target
+;*	arg1 = buffer pointer
+;*
+;* Returns:
+;*	None
+;*
+;* Register usage:
+;*	arg0 = rdr target
+;*	arg1 = buffer pointer
+;*	%r24 - DR2 | DR2_SLOW_RET
+;*	%r23 - original DR2 value
+;*
+;***********************************************************************
+
+ENTRY(perf_rdr_shift_out_U)
+	.proc
+	.callinfo frame=0,NO_CALLS
+	.entry
+
+;
+; NOTE: The PCX-U ERS states that DR2_SLOW_RET must be set before any
+; shifting is done, from or to, the remote diagnose registers.
+;
+
+	depdi,z		1,DR2_SLOW_RET,1,%r24
+	MFDIAG_2	(23)
+	or		%r24,%r23,%r24
+	MTDIAG_2	(24)		; set DR2_SLOW_RET
+
+	MTDIAG_1	(25)		; data to the staging register
+	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
+	blr		%r1,%r0		; branch to 8-instruction sequence
+	nop
+
+;
+; 32-byte cachline aligned
+;
+
+	sync				; RDR 0 write sequence
+	ssm		0,0
+	STDIAG		(0)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 1 write sequence
+	ssm		0,0
+	STDIAG		(1)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 2 write sequence
+	ssm		0,0
+	STDIAG		(2)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 3 write sequence
+	ssm		0,0
+	STDIAG		(3)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 4 write sequence
+	ssm		0,0
+	STDIAG		(4)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 5 write sequence
+	ssm		0,0
+	STDIAG		(5)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 6 write sequence
+	ssm		0,0
+	STDIAG		(6)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 7 write sequence
+	ssm		0,0
+	STDIAG		(7)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 8 write sequence
+	ssm		0,0
+	STDIAG		(8)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 9 write sequence
+	ssm		0,0
+	STDIAG		(9)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 10 write sequence
+	ssm		0,0
+	STDIAG		(10)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 11 write sequence
+	ssm		0,0
+	STDIAG		(11)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 12 write sequence
+	ssm		0,0
+	STDIAG		(12)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 13 write sequence
+	ssm		0,0
+	STDIAG		(13)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 14 write sequence
+	ssm		0,0
+	STDIAG		(14)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 15 write sequence
+	ssm		0,0
+	STDIAG		(15)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 16 write sequence
+	ssm		0,0
+	STDIAG		(16)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 17 write sequence
+	ssm		0,0
+	STDIAG		(17)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 18 write sequence
+	ssm		0,0
+	STDIAG		(18)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 19 write sequence
+	ssm		0,0
+	STDIAG		(19)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 20 write sequence
+	ssm		0,0
+	STDIAG		(20)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 21 write sequence
+	ssm		0,0
+	STDIAG		(21)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 22 write sequence
+	ssm		0,0
+	STDIAG		(22)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 23 write sequence
+	ssm		0,0
+	STDIAG		(23)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 24 write sequence
+	ssm		0,0
+	STDIAG		(24)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 25 write sequence
+	ssm		0,0
+	STDIAG		(25)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 26 write sequence
+	ssm		0,0
+	STDIAG		(26)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 27 write sequence
+	ssm		0,0
+	STDIAG		(27)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 28 write sequence
+	ssm		0,0
+	STDIAG		(28)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 29 write sequence
+	ssm		0,0
+	STDIAG		(29)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 30 write sequence
+	ssm		0,0
+	STDIAG		(30)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+	sync				; RDR 31 write sequence
+	ssm		0,0
+	STDIAG		(31)
+	ssm		0,0
+	b,n         perf_rdr_shift_out_U_leave
+	nop
+	ssm		0,0
+	nop
+
+perf_rdr_shift_out_U_leave:
+	bve		(%r2)
+	.exit
+	MTDIAG_2	(23)			; restore DR2
+	.procend
+ENDPROC(perf_rdr_shift_out_U)
+