57 lines
1.4 KiB
ArmAsm
57 lines
1.4 KiB
ArmAsm
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# VAX mpn_rshift -- right shift.
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# Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
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# This file is part of the GNU MP Library.
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# The GNU MP Library is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or (at your
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# option) any later version.
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# The GNU MP Library is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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# You should have received a copy of the GNU Lesser General Public License
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# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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# INPUT PARAMETERS
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# rptr (sp + 4)
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# sptr (sp + 8)
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# size (sp + 12)
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# cnt (sp + 16)
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# r0=retval r1=size r2,r3=itmp r4,r5=otmp call-used registers
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# r6=sptr r7=rptr r8=cnt r9 r10 r11 call-saved registers
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.text
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.align 1
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.globl ___gmpn_rshift
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___gmpn_rshift:
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.word 0x1c0
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movl 4(ap),r7
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movl 8(ap),r6
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movl 12(ap),r1
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movl 16(ap),r8
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movl (r6)+,r2
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subl3 r8,$32,r8
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ashl r8,r2,r0
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decl r1
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jeql Lend
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Loop: movl (r6)+,r3
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ashq r8,r2,r4
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movl r5,(r7)+
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movl r3,r2
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sobgtr r1,Loop
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Lend: clrl r3
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ashq r8,r2,r4
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movl r5,(r7)
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ret
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