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/* MN10300 Microcontroller core system register definitions -*- asm -*-
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#ifndef _ASM_FRAME_INC
#define _ASM_FRAME_INC

#ifndef __ASSEMBLY__
#error not for use in C files
#endif

#ifndef __ASM_OFFSETS_H__
#include <asm/asm-offsets.h>
#endif
#include <asm/thread_info.h>

#define pi break

#define fp a3

###############################################################################
#
# build a stack frame from the registers
# - the caller has subtracted 4 from SP before coming here
#
###############################################################################
.macro SAVE_ALL
	add	-4,sp				# next exception frame ptr save area
	movm	[other],(sp)
	mov	usp,a1
	mov	a1,(sp)				# USP in MOVM[other] dummy slot
	movm	[d2,d3,a2,a3,exreg0,exreg1,exother],(sp)
	mov	sp,fp				# FRAME pointer in A3
	add	-12,sp				# allow for calls to be made

	# push the exception frame onto the front of the list
	GET_THREAD_INFO a1
	mov	(TI_frame,a1),a0
	mov	a0,(REG_NEXT,fp)
	mov	fp,(TI_frame,a1)

	# disable the FPU inside the kernel
	and	~EPSW_FE,epsw

	# we may be holding current in E2
#ifdef CONFIG_MN10300_CURRENT_IN_E2
	mov	(__current),e2
#endif
.endm

###############################################################################
#
# restore the registers from a stack frame
#
###############################################################################
.macro RESTORE_ALL
	# peel back the stack to the calling frame
	# - we need that when returning from interrupts to kernel mode
	GET_THREAD_INFO a0
	mov	(TI_frame,a0),fp
	mov	fp,sp
	mov	(REG_NEXT,fp),d0
	mov	d0,(TI_frame,a0)                # userspace has regs->next == 0

#ifndef CONFIG_MN10300_USING_JTAG
	mov	(REG_EPSW,fp),d0
	btst	EPSW_T,d0
	beq	99f

	or	EPSW_NMID,epsw
	movhu	(DCR),d1
	or	0x0001, d1
	movhu	d1,(DCR)

99:
#endif
	movm	(sp),[d2,d3,a2,a3,exreg0,exreg1,exother]

	# must restore usp even if returning to kernel space,
	# when CONFIG_PREEMPT is enabled.
	mov	(sp),a1				# USP in MOVM[other] dummy slot
	mov	a1,usp

	movm	(sp),[other]
	add	8,sp
	rti

.endm


#endif /* _ASM_FRAME_INC */

Filemanager

Name Type Size Permission Actions
Kbuild File 314 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 4.02 KB 0644
bitops.h File 5.42 KB 0644
bug.h File 864 B 0644
bugs.h File 561 B 0644
busctl-regs.h File 7.8 KB 0644
cache.h File 2.06 KB 0644
cacheflush.h File 7.6 KB 0644
checksum.h File 2.09 KB 0644
cmpxchg.h File 2.65 KB 0644
cpu-regs.h File 16.61 KB 0644
current.h File 922 B 0644
debugger.h File 1.2 KB 0644
delay.h File 597 B 0644
div64.h File 3.21 KB 0644
dma-mapping.h File 636 B 0644
dma.h File 3.09 KB 0644
dmactl-regs.h File 532 B 0644
elf.h File 4.49 KB 0644
emergency-restart.h File 43 B 0644
exceptions.h File 4.74 KB 0644
fpu.h File 3.57 KB 0644
frame.inc File 2.37 KB 0644
ftrace.h File 12 B 0644
futex.h File 31 B 0644
gdb-stub.h File 5.42 KB 0644
hardirq.h File 1.68 KB 0644
highmem.h File 3.01 KB 0644
hw_irq.h File 483 B 0644
intctl-regs.h File 2.26 KB 0644
io.h File 7.67 KB 0644
irq.h File 1.11 KB 0644
irq_regs.h File 751 B 0644
irqflags.h File 4.05 KB 0644
kdebug.h File 561 B 0644
kgdb.h File 1.7 KB 0644
kmap_types.h File 160 B 0644
kprobes.h File 1.59 KB 0644
linkage.h File 593 B 0644
local.h File 31 B 0644
local64.h File 33 B 0644
mc146818rtc.h File 26 B 0644
mmu.h File 434 B 0644
mmu_context.h File 4.44 KB 0644
module.h File 677 B 0644
nmi.h File 500 B 0644
page.h File 3.63 KB 0644
page_offset.h File 302 B 0644
pci.h File 2.17 KB 0644
percpu.h File 32 B 0644
pgalloc.h File 1.49 KB 0644
pgtable.h File 15.68 KB 0644
pio-regs.h File 7.53 KB 0644
processor.h File 4.12 KB 0644
ptrace.h File 805 B 0644
reset-regs.h File 1.8 KB 0644
rtc-regs.h File 3.57 KB 0644
rtc.h File 692 B 0644
rwlock.h File 2.98 KB 0644
serial-regs.h File 8.85 KB 0644
serial.h File 1.02 KB 0644
setup.h File 574 B 0644
shmparam.h File 182 B 0644
signal.h File 888 B 0644
smp.h File 3.06 KB 0644
smsc911x.h File 27 B 0644
spinlock.h File 3.84 KB 0644
spinlock_types.h File 445 B 0644
string.h File 1.03 KB 0644
switch_to.h File 1.49 KB 0644
syscall.h File 2.38 KB 0644
termios.h File 387 B 0644
thread_info.h File 4.36 KB 0644
timer-regs.h File 20.72 KB 0644
timex.h File 843 B 0644
tlb.h File 941 B 0644
tlbflush.h File 3.45 KB 0644
topology.h File 34 B 0644
types.h File 620 B 0644
uaccess.h File 7.78 KB 0644
ucontext.h File 673 B 0644
unaligned.h File 678 B 0644
unistd.h File 1.34 KB 0644
user.h File 1.91 KB 0644
vga.h File 471 B 0644
xor.h File 29 B 0644