Blame mpn/s390_64/invert_limb.asm
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dnl S/390-64 mpn_invert_limb
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dnl Contributed to the GNU project by Torbjorn Granlund.
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dnl Copyright 2011, 2013 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of either:
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dnl
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dnl * the GNU Lesser General Public License as published by the Free
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dnl Software Foundation; either version 3 of the License, or (at your
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dnl option) any later version.
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dnl
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dnl or
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dnl
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dnl * the GNU General Public License as published by the Free Software
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dnl Foundation; either version 2 of the License, or (at your option) any
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dnl later version.
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dnl
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dnl or both in parallel, as here.
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dnl
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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dnl for more details.
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dnl
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dnl You should have received copies of the GNU General Public License and the
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dnl GNU Lesser General Public License along with the GNU MP Library. If not,
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dnl see https://www.gnu.org/licenses/.
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include(`../config.m4')
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C cycles/limb
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C z900 142
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C z990 86
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C z9 ?
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C z10 120
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C z196 ?
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ASM_START()
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TEXT
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ALIGN(16)
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PROLOGUE(mpn_invert_limb)
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stg %r9, 72(%r15)
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srlg %r9, %r2, 55
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agr %r9, %r9
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larl %r4, approx_tab-512
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srlg %r3, %r2, 24
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aghi %r3, 1
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lghi %r5, 1
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llgh %r4, 0(%r9, %r4)
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sllg %r9, %r4, 11
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msgr %r4, %r4
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msgr %r4, %r3
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srlg %r4, %r4, 40
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aghi %r9, -1
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sgr %r9, %r4
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sllg %r0, %r9, 60
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sllg %r1, %r9, 13
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msgr %r9, %r9
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msgr %r9, %r3
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sgr %r0, %r9
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ngr %r5, %r2
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srlg %r4, %r2, 1
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srlg %r3, %r0, 47
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agr %r3, %r1
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agr %r4, %r5
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msgr %r4, %r3
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srlg %r1, %r3, 1
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lcgr %r5, %r5
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ngr %r1, %r5
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sgr %r1, %r4
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mlgr %r0, %r3
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srlg %r9, %r0, 1
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sllg %r4, %r3, 31
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agr %r4, %r9
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lgr %r1, %r4
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mlgr %r0, %r2
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algr %r1, %r2
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alcgr %r0, %r2
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lgr %r2, %r4
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sgr %r2, %r0
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lg %r9, 72(%r15)
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br %r14
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EPILOGUE()
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RODATA
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ALIGN(2)
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approx_tab:
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forloop(i,256,512-1,dnl
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` .word eval(0x7fd00/i)
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')dnl
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ASM_END()
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