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b920de1b77
Add architecture support for the MN10300/AM33 CPUs produced by MEI to the kernel. This patch also adds board support for the ASB2303 with the ASB2308 daughter board, and the ASB2305. The only processor supported is the MN103E010, which is an AM33v2 core plus on-chip devices. [akpm@linux-foundation.org: nuke cvs control strings] Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com> Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
53 lines
1.3 KiB
ArmAsm
53 lines
1.3 KiB
ArmAsm
/* MN10300 64-bit arithmetic right shift
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#include <asm/cache.h>
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.text
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.balign L1_CACHE_BYTES
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###############################################################################
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#
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# unsigned long long __ashrdi3(unsigned long long value [D1:D0],
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# unsigned by [(12,SP)])
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#
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###############################################################################
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.globl __ashrdi3
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.type __ashrdi3,@function
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__ashrdi3:
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mov (12,sp),a0
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and +63,a0
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beq __ashrdi3_zero
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cmp +31,a0
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bhi __ashrdi3_32plus
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# the count is in the range 1-31
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lsr a0,d0
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mov +32,a1
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sub a0,a1,a1 # a1 = 32 - count
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asl a1,d1,a1 # get underflow from MSW -> LSW
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or_asr a1,d0,a0,d1 # insert underflow into LSW and
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# shift the MSW
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rets
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.balign L1_CACHE_BYTES
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# the count is in the range 32-63
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__ashrdi3_32plus:
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asr a0,d1,d0
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ext d0 # sign-extend result through MDR
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mov mdr,d1
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__ashrdi3_zero:
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rets
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.size __ashrdi3, .-__ashrdi3
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