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-rw-r--r--arch/powerpc/cpu/mpc83xx/Makefile9
-rw-r--r--arch/powerpc/cpu/ppc4xx/Makefile1
-rw-r--r--arch/powerpc/cpu/ppc4xx/usb.c5
-rw-r--r--arch/powerpc/cpu/ppc4xx/usb_ohci.c7
-rw-r--r--arch/powerpc/cpu/ppc4xx/usbdev.c230
-rw-r--r--arch/powerpc/cpu/ppc4xx/usbdev.h31
-rw-r--r--arch/powerpc/lib/Makefile23
-rw-r--r--arch/powerpc/lib/_ashldi3.S45
-rw-r--r--arch/powerpc/lib/_ashrdi3.S47
-rw-r--r--arch/powerpc/lib/_lshrdi3.S45
10 files changed, 162 insertions, 281 deletions
diff --git a/arch/powerpc/cpu/mpc83xx/Makefile b/arch/powerpc/cpu/mpc83xx/Makefile
index b3530361843..b5c499dddb1 100644
--- a/arch/powerpc/cpu/mpc83xx/Makefile
+++ b/arch/powerpc/cpu/mpc83xx/Makefile
@@ -42,15 +42,15 @@ COBJS-$(CONFIG_PCIE) += pcie.o
COBJS-$(CONFIG_OF_LIBFDT) += fdt.o
ifdef CONFIG_FSL_DDR2
-COBJS-$(CONFIG_MPC8349) += ddr-gen2.o
+COBJS_LN-$(CONFIG_MPC8349) += ddr-gen2.o
else
COBJS-y += spd_sdram.o
endif
COBJS-$(CONFIG_FSL_DDR2) += law.o
COBJS := $(COBJS-y)
-SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
+SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) $(addprefix $(obj),$(COBJS_LN-y:.o=.c))
+OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS_LN-y))
START := $(addprefix $(obj),$(START))
all: $(obj).depend $(START) $(LIB)
@@ -59,15 +59,12 @@ $(LIB): $(OBJS)
$(call cmd_link_o_target, $(OBJS))
$(obj)ddr-gen1.c:
- @rm -f $(obj)ddr-gen1.c
ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/ddr-gen1.c $(obj)ddr-gen1.c
$(obj)ddr-gen2.c:
- @rm -f $(obj)ddr-gen2.c
ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/ddr-gen2.c $(obj)ddr-gen2.c
$(obj)ddr-gen3.c:
- @rm -f $(obj)ddr-gen3.c
ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/ddr-gen3.c $(obj)ddr-gen3.c
#########################################################################
diff --git a/arch/powerpc/cpu/ppc4xx/Makefile b/arch/powerpc/cpu/ppc4xx/Makefile
index d97ca207c02..3d622550390 100644
--- a/arch/powerpc/cpu/ppc4xx/Makefile
+++ b/arch/powerpc/cpu/ppc4xx/Makefile
@@ -61,7 +61,6 @@ COBJS += tlb.o
COBJS += traps.o
COBJS += usb.o
COBJS += usb_ohci.o
-COBJS += usbdev.o
COBJS-$(CONFIG_XILINX_440) += xilinx_irq.o
ifndef CONFIG_XILINX_440
COBJS += 4xx_uart.o
diff --git a/arch/powerpc/cpu/ppc4xx/usb.c b/arch/powerpc/cpu/ppc4xx/usb.c
index 592efe70a71..8c71f75e600 100644
--- a/arch/powerpc/cpu/ppc4xx/usb.c
+++ b/arch/powerpc/cpu/ppc4xx/usb.c
@@ -30,8 +30,6 @@
DECLARE_GLOBAL_DATA_PTR;
#endif
-#include "usbdev.h"
-
int usb_cpu_init(void)
{
#ifdef CONFIG_4xx_DCACHE
@@ -39,9 +37,6 @@ int usb_cpu_init(void)
change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, TLB_WORD2_I_ENABLE);
#endif
-#if defined(CONFIG_440EP) || defined(CONFIG_440EPX)
- usb_dev_init();
-#endif
return 0;
}
diff --git a/arch/powerpc/cpu/ppc4xx/usb_ohci.c b/arch/powerpc/cpu/ppc4xx/usb_ohci.c
index 065730d882b..4fb70312038 100644
--- a/arch/powerpc/cpu/ppc4xx/usb_ohci.c
+++ b/arch/powerpc/cpu/ppc4xx/usb_ohci.c
@@ -44,8 +44,6 @@
#include <usb.h>
#include "usb_ohci.h"
-#include "usbdev.h"
-
#define OHCI_USE_NPS /* force NoPowerSwitching mode */
#undef OHCI_VERBOSE_DEBUG /* not always helpful */
#undef DEBUG
@@ -1623,11 +1621,6 @@ int usb_lowlevel_init(void)
ohci_inited = 1;
urb_finished = 1;
-#if defined(CONFIG_440EP) || defined(CONFIG_440EPX)
- /* init the device driver */
- usb_dev_init();
-#endif
-
return 0;
}
diff --git a/arch/powerpc/cpu/ppc4xx/usbdev.c b/arch/powerpc/cpu/ppc4xx/usbdev.c
deleted file mode 100644
index fe398afc02b..00000000000
--- a/arch/powerpc/cpu/ppc4xx/usbdev.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*USB 1.1,2.0 device*/
-
-#include <common.h>
-#include <asm/processor.h>
-
-#if (defined(CONFIG_440EP) || defined(CONFIG_440EPX)) && defined(CONFIG_CMD_USB)
-
-#include <usb.h>
-#include <asm/ppc4xx-uic.h>
-#include "usbdev.h"
-
-#define USB_DT_DEVICE 0x01
-#define USB_DT_CONFIG 0x02
-#define USB_DT_STRING 0x03
-#define USB_DT_INTERFACE 0x04
-#define USB_DT_ENDPOINT 0x05
-
-int set_value = -1;
-
-void process_endpoints(unsigned short usb2d0_intrin)
-{
- /*will hold the packet received */
- struct usb_device_descriptor usb_device_packet;
- struct usb_configuration_descriptor usb_config_packet;
- struct usb_string_descriptor usb_string_packet;
- struct devrequest setup_packet;
- unsigned int *setup_packet_pt;
- unsigned char *packet_pt = NULL;
- int temp, temp1;
-
- int i;
-
- /*printf("{USB device} - endpoint 0x%X \n", usb2d0_intrin); */
-
- /*set usb address, seems to not work unless it is done in the next
- interrupt, so that is why it is done this way */
- if (set_value != -1)
- *(unsigned char *)USB2D0_FADDR_8 = (unsigned char)set_value;
-
- /*endpoint 1 */
- if (usb2d0_intrin & 0x01) {
- setup_packet_pt = (unsigned int *)&setup_packet;
-
- /*copy packet */
- setup_packet_pt[0] = *(unsigned int *)USB2D0_FIFO_0;
- setup_packet_pt[1] = *(unsigned int *)USB2D0_FIFO_0;
- temp = *(unsigned int *)USB2D0_FIFO_0;
- temp1 = *(unsigned int *)USB2D0_FIFO_0;
-
- /*do some swapping */
- setup_packet.value = swap_16(setup_packet.value);
- setup_packet.index = swap_16(setup_packet.index);
- setup_packet.length = swap_16(setup_packet.length);
-
- /*clear rx packet */
- *(unsigned short *)USB2D0_INCSR0_8 = 0x48;
-
- /*printf("0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X\n", setup_packet.requesttype,
- setup_packet.request, setup_packet.value,
- setup_packet.index, setup_packet.length, temp, temp1 ); */
-
- switch (setup_packet.request) {
- case USB_REQ_GET_DESCRIPTOR:
-
- switch (setup_packet.value >> 8) {
- case USB_DT_DEVICE:
- /*create packet */
- usb_device_packet.bLength = 18;
- usb_device_packet.bDescriptorType =
- USB_DT_DEVICE;
-#ifdef USB_2_0_DEVICE
- usb_device_packet.bcdUSB = swap_16(0x200);
-#else
- usb_device_packet.bcdUSB = swap_16(0x110);
-#endif
- usb_device_packet.bDeviceClass = 0xff;
- usb_device_packet.bDeviceSubClass = 0;
- usb_device_packet.bDeviceProtocol = 0;
- usb_device_packet.bMaxPacketSize0 = 32;
- usb_device_packet.idVendor = swap_16(1);
- usb_device_packet.idProduct = swap_16(2);
- usb_device_packet.bcdDevice = swap_16(0x300);
- usb_device_packet.iManufacturer = 1;
- usb_device_packet.iProduct = 1;
- usb_device_packet.iSerialNumber = 1;
- usb_device_packet.bNumConfigurations = 1;
-
- /*put packet in fifo */
- packet_pt = (unsigned char *)&usb_device_packet;
- break;
-
- case USB_DT_CONFIG:
- /*create packet */
- usb_config_packet.bLength = 9;
- usb_config_packet.bDescriptorType =
- USB_DT_CONFIG;
- usb_config_packet.wTotalLength = swap_16(25);
- usb_config_packet.bNumInterfaces = 1;
- usb_config_packet.bConfigurationValue = 1;
- usb_config_packet.iConfiguration = 0;
- usb_config_packet.bmAttributes = 0x40;
- usb_config_packet.bMaxPower = 0;
-
- /*put packet in fifo */
- packet_pt = (unsigned char *)&usb_config_packet;
- break;
-
- case USB_DT_STRING:
- /*create packet */
- usb_string_packet.bLength = 2;
- usb_string_packet.bDescriptorType =
- USB_DT_STRING;
- usb_string_packet.wData[0] = 0x0094;
-
- /*put packet in fifo */
- packet_pt = (unsigned char *)&usb_string_packet;
- break;
- }
-
- /*put packet in fifo */
- for (i = 0; i < (setup_packet.length); i++) {
- *(unsigned char *)USB2D0_FIFO_0 = packet_pt[i];
- }
-
- /*give tx command */
- *(unsigned short *)USB2D0_INCSR0_8 = 0x0a;
-
- break;
-
- case USB_REQ_SET_ADDRESS:
-
- /*copy usb address */
- set_value = setup_packet.value;
-
- break;
- }
-
- }
-}
-
-void process_other(unsigned char usb2d0_intrusb)
-{
-
- /*check for sof */
- if (usb2d0_intrusb & 0x08) {
- /*printf("{USB device} - sof detected\n"); */
- }
-
- /*check for reset */
- if (usb2d0_intrusb & 0x04) {
- /*printf("{USB device} - reset detected\n"); */
-
- /*copy usb address of zero, need to do this when usb reset */
- set_value = 0;
- }
-
- if (usb2d0_intrusb & 0x02) {
- /*printf("{USB device} - resume detected\n"); */
- }
-
- if (usb2d0_intrusb & 0x01) {
- /*printf("{USB device} - suspend detected\n"); */
- }
-}
-
-int usbInt(void)
-{
- /*Must read these 2 registers and use values to clear interrupts. If you
- do not read them then the interrupt will not be cleared. If you do not
- use the variable the optimizer will not do a read. */
- volatile unsigned short usb2d0_intrin =
- *(unsigned short *)USB2D0_INTRIN_16;
- volatile unsigned char usb2d0_intrusb =
- *(unsigned char *)USB2D0_INTRUSB_8;
-
- /*check if there was an endpoint interrupt */
- if (usb2d0_intrin != 0) {
- process_endpoints(usb2d0_intrin);
- }
-
- /*check for other interrupts */
- if (usb2d0_intrusb != 0) {
- process_other(usb2d0_intrusb);
- }
-
- return 0;
-}
-
-#if defined(CONFIG_440EPX)
-void usb_dev_init()
-{
- printf("USB 2.0 Device init\n");
-
- /*usb dev init */
- *(unsigned char *)USB2D0_POWER_8 = 0xa1; /* 2.0 */
-
- /*enable interrupts */
- *(unsigned char *)USB2D0_INTRUSBE_8 = 0x0f;
-
- irq_install_handler(VECNUM_USBDEV, (interrupt_handler_t *) usbInt,
- NULL);
-}
-#else
-void usb_dev_init()
-{
-#ifdef USB_2_0_DEVICE
- printf("USB 2.0 Device init\n");
- /*select 2.0 device */
- mtsdr(SDR0_USB0, 0x0); /* 2.0 */
-
- /*usb dev init */
- *(unsigned char *)USB2D0_POWER_8 = 0xa1; /* 2.0 */
-#else
- printf("USB 1.1 Device init\n");
- /*select 1.1 device */
- mtsdr(SDR0_USB0, 0x2); /* 1.1 */
-
- /*usb dev init */
- *(unsigned char *)USB2D0_POWER_8 = 0xc0; /* 1.1 */
-#endif
-
- /*enable interrupts */
- *(unsigned char *)USB2D0_INTRUSBE_8 = 0x0f;
-
- irq_install_handler(VECNUM_USBDEV, (interrupt_handler_t *) usbInt,
- NULL);
-}
-#endif
-
-#endif /* CONFIG_440EP || CONFIG_440EPX */
diff --git a/arch/powerpc/cpu/ppc4xx/usbdev.h b/arch/powerpc/cpu/ppc4xx/usbdev.h
deleted file mode 100644
index ef6a2da649f..00000000000
--- a/arch/powerpc/cpu/ppc4xx/usbdev.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#include <config.h>
-
-/*Common Registers*/
-#define USB2D0_INTRIN_16 (CONFIG_SYS_USB_DEVICE | 0x100)
-#define USB2D0_POWER_8 (CONFIG_SYS_USB_DEVICE | 0x102)
-#define USB2D0_FADDR_8 (CONFIG_SYS_USB_DEVICE | 0x103)
-#define USB2D0_INTRINE_16 (CONFIG_SYS_USB_DEVICE | 0x104)
-#define USB2D0_INTROUT_16 (CONFIG_SYS_USB_DEVICE | 0x106)
-#define USB2D0_INTRUSBE_8 (CONFIG_SYS_USB_DEVICE | 0x108)
-#define USB2D0_INTRUSB_8 (CONFIG_SYS_USB_DEVICE | 0x109)
-#define USB2D0_INTROUTE_16 (CONFIG_SYS_USB_DEVICE | 0x10a)
-#define USB2D0_TSTMODE_8 (CONFIG_SYS_USB_DEVICE | 0x10c)
-#define USB2D0_INDEX_8 (CONFIG_SYS_USB_DEVICE | 0x10d)
-#define USB2D0_FRAME_16 (CONFIG_SYS_USB_DEVICE | 0x10e)
-
-/*Indexed Registers*/
-#define USB2D0_INCSR0_8 (CONFIG_SYS_USB_DEVICE | 0x110)
-#define USB2D0_INCSR_16 (CONFIG_SYS_USB_DEVICE | 0x110)
-#define USB2D0_INMAXP_16 (CONFIG_SYS_USB_DEVICE | 0x112)
-#define USB2D0_OUTCSR_16 (CONFIG_SYS_USB_DEVICE | 0x114)
-#define USB2D0_OUTMAXP_16 (CONFIG_SYS_USB_DEVICE | 0x116)
-#define USB2D0_OUTCOUNT0_8 (CONFIG_SYS_USB_DEVICE | 0x11a)
-#define USB2D0_OUTCOUNT_16 (CONFIG_SYS_USB_DEVICE | 0x11a)
-
-/*FIFOs*/
-#define USB2D0_FIFO_0 (CONFIG_SYS_USB_DEVICE | 0x120)
-#define USB2D0_FIFO_1 (CONFIG_SYS_USB_DEVICE | 0x124)
-#define USB2D0_FIFO_2 (CONFIG_SYS_USB_DEVICE | 0x128)
-#define USB2D0_FIFO_3 (CONFIG_SYS_USB_DEVICE | 0x12c)
-
-void usb_dev_init(void);
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 724d8ee7f74..cdd62a2061f 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -23,6 +23,19 @@
include $(TOPDIR)/config.mk
+## Build a couple of necessary functions into a private libgcc
+LIBGCC = $(obj)libgcc.o
+GLSOBJS += _ashldi3.o
+GLSOBJS += _ashrdi3.o
+GLSOBJS += _lshrdi3.o
+LGOBJS := $(addprefix $(obj),$(GLSOBJS)) \
+ $(addprefix $(obj),$(GLCOBJS))
+
+## But only build it if the user asked for it
+ifdef USE_PRIVATE_LIBGCC
+TARGETS += $(LIBGCC)
+endif
+
LIB = $(obj)lib$(ARCH).o
SOBJS-y += ppccache.o
@@ -53,9 +66,14 @@ endif
COBJS += $(sort $(COBJS-y))
-SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+SRCS := $(GLSOBJS:.o=.S) $(GLCOBJS:.o=.c) \
+ $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
+TARGETS += $(LIB)
+
+all: $(TARGETS)
+
$(LIB): $(obj).depend $(OBJS)
@if ! $(CROSS_COMPILE)readelf -S $(OBJS) | grep -q '\.fixup.*PROGBITS';\
then \
@@ -65,6 +83,9 @@ $(LIB): $(obj).depend $(OBJS)
fi;
$(call cmd_link_o_target, $(OBJS))
+$(LIBGCC): $(obj).depend $(LGOBJS)
+ $(call cmd_link_o_target, $(LGOBJS))
+
#########################################################################
# defines $(obj).depend target
diff --git a/arch/powerpc/lib/_ashldi3.S b/arch/powerpc/lib/_ashldi3.S
new file mode 100644
index 00000000000..e452f56de53
--- /dev/null
+++ b/arch/powerpc/lib/_ashldi3.S
@@ -0,0 +1,45 @@
+/*
+ * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux
+ * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also
+ * known as 2.6.38-rc5). The source file copyrights are as follows:
+ *
+ * (C) Copyright 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <config.h>
+
+/*
+ * Extended precision shifts.
+ *
+ * Updated to be valid for shift counts from 0 to 63 inclusive.
+ * -- Gabriel
+ *
+ * R3/R4 has 64 bit value
+ * R5 has shift count
+ * result in R3/R4
+ *
+ * ashrdi3: arithmetic right shift (sign propagation)
+ * lshrdi3: logical right shift
+ * ashldi3: left shift
+ */
+ .globl __ashldi3
+__ashldi3:
+ subfic r6,r5,32
+ slw r3,r3,r5 # MSW = count > 31 ? 0 : MSW << count
+ addi r7,r5,32 # could be xori, or addi with -32
+ srw r6,r4,r6 # t1 = count > 31 ? 0 : LSW >> (32-count)
+ slw r7,r4,r7 # t2 = count < 32 ? 0 : LSW << (count-32)
+ or r3,r3,r6 # MSW |= t1
+ slw r4,r4,r5 # LSW = LSW << count
+ or r3,r3,r7 # MSW |= t2
+ blr
diff --git a/arch/powerpc/lib/_ashrdi3.S b/arch/powerpc/lib/_ashrdi3.S
new file mode 100644
index 00000000000..f28ab497642
--- /dev/null
+++ b/arch/powerpc/lib/_ashrdi3.S
@@ -0,0 +1,47 @@
+/*
+ * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux
+ * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also
+ * known as 2.6.38-rc5). The source file copyrights are as follows:
+ *
+ * (C) Copyright 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <config.h>
+
+/*
+ * Extended precision shifts.
+ *
+ * Updated to be valid for shift counts from 0 to 63 inclusive.
+ * -- Gabriel
+ *
+ * R3/R4 has 64 bit value
+ * R5 has shift count
+ * result in R3/R4
+ *
+ * ashrdi3: arithmetic right shift (sign propagation)
+ * lshrdi3: logical right shift
+ * ashldi3: left shift
+ */
+ .globl __ashrdi3
+__ashrdi3:
+ subfic r6,r5,32
+ srw r4,r4,r5 # LSW = count > 31 ? 0 : LSW >> count
+ addi r7,r5,32 # could be xori, or addi with -32
+ slw r6,r3,r6 # t1 = count > 31 ? 0 : MSW << (32-count)
+ rlwinm r8,r7,0,32 # t3 = (count < 32) ? 32 : 0
+ sraw r7,r3,r7 # t2 = MSW >> (count-32)
+ or r4,r4,r6 # LSW |= t1
+ slw r7,r7,r8 # t2 = (count < 32) ? 0 : t2
+ sraw r3,r3,r5 # MSW = MSW >> count
+ or r4,r4,r7 # LSW |= t2
+ blr
diff --git a/arch/powerpc/lib/_lshrdi3.S b/arch/powerpc/lib/_lshrdi3.S
new file mode 100644
index 00000000000..c1bbe7be3e0
--- /dev/null
+++ b/arch/powerpc/lib/_lshrdi3.S
@@ -0,0 +1,45 @@
+/*
+ * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux
+ * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also
+ * known as 2.6.38-rc5). The source file copyrights are as follows:
+ *
+ * (C) Copyright 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <config.h>
+
+/*
+ * Extended precision shifts.
+ *
+ * Updated to be valid for shift counts from 0 to 63 inclusive.
+ * -- Gabriel
+ *
+ * R3/R4 has 64 bit value
+ * R5 has shift count
+ * result in R3/R4
+ *
+ * ashrdi3: arithmetic right shift (sign propagation)
+ * lshrdi3: logical right shift
+ * ashldi3: left shift
+ */
+ .globl __lshrdi3
+__lshrdi3:
+ subfic r6,r5,32
+ srw r4,r4,r5 # LSW = count > 31 ? 0 : LSW >> count
+ addi r7,r5,32 # could be xori, or addi with -32
+ slw r6,r3,r6 # t1 = count > 31 ? 0 : MSW << (32-count)
+ srw r7,r3,r7 # t2 = count < 32 ? 0 : MSW >> (count-32)
+ or r4,r4,r6 # LSW |= t1
+ srw r3,r3,r5 # MSW = MSW >> count
+ or r4,r4,r7 # LSW |= t2
+ blr