Blame sysdeps/sparc/sparc64/align-cpy.S
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/* Aligned copy routines specified by Sparc V9 ABI.
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For 64-bit sparc.
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Copyright (C) 2010-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David S. Miller (davem@davemloft.net)
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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.text
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.align 8
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ENTRY(__align_cpy_8)
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10: cmp %o0, %o1
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be,pn %xcc, 9f
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mov %o0, %o3
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subcc %o2, 0x08, %o2
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be,pn %xcc, 8f
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1: ldx [%o1 + 0x00], %o5
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ldx [%o1 + 0x08], %o4
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subcc %o2, 0x10, %o2
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add %o1, 0x10, %o1
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stx %o5, [%o3 + 0x00]
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stx %o4, [%o3 + 0x08]
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bg,pt %xcc, 1b
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add %o3, 0x10, %o3
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bne,pn %xcc, 9f
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nop
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ldx [%o1 + 0x00], %o5
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8: stx %o5, [%o3 + 0x00]
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9: retl
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nop
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END(__align_cpy_8)
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.align 8
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ENTRY(__align_cpy_4)
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20: cmp %o0, %o1
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be,pn %xcc, 9f
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mov %o0, %o3
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subcc %o2, 0x04, %o2
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be,pn %xcc, 8f
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1: lduw [%o1 + 0x00], %o5
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lduw [%o1 + 0x04], %o4
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subcc %o2, 0x08, %o2
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add %o1, 0x08, %o1
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stw %o5, [%o3 + 0x00]
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stw %o4, [%o3 + 0x04]
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bg,pt %xcc, 1b
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add %o3, 0x08, %o3
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bne,pn %xcc, 9f
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nop
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lduw [%o1 + 0x00], %o5
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8: stw %o5, [%o3 + 0x00]
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9: retl
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nop
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END(__align_cpy_4)
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.align 8
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ENTRY(__align_cpy_2)
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or %o0, %o1, %o3
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or %o2, %o3, %o3
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andcc %o3, 0x7, %g0
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be,pt %xcc, 10b
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andcc %o3, 0x3, %g0
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be,pt %xcc, 20b
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mov %o7, %g1
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call HIDDEN_JUMPTARGET(memcpy)
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mov %o7, %g1
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END(__align_cpy_2)
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weak_alias (__align_cpy_8, __align_cpy_16)
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weak_alias (__align_cpy_2, __align_cpy_1)
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