144 lines
2.9 KiB
NASM
144 lines
2.9 KiB
NASM
dnl mpn_addlsh_n
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dnl Copyright 2009 Jason Moxham
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dnl This file is part of the MPIR Library.
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dnl The MPIR Library is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU Lesser General Public License as published
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dnl by the Free Software Foundation; either version 2.1 of the License, or (at
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dnl your option) any later version.
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dnl The MPIR 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 Lesser General Public
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dnl License for more details.
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dnl You should have received a copy of the GNU Lesser General Public License
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dnl along with the MPIR Library; see the file COPYING.LIB. If not, write
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dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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dnl Boston, MA 02110-1301, USA.
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include(`../config.m4')
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C ret mpn_addlsh_n(mp_ptr,mp_ptr,mp_ptr,mp_size_t,shift)
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C rax rdi, rsi, rdx, rcx r8
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ASM_START()
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PROLOGUE(mpn_addlsh_n)
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lea -32(%rdi,%rcx,8),%rdi
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lea -32(%rsi,%rcx,8),%rsi
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lea -32(%rdx,%rcx,8),%rdx
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push %r12
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push %rbx
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mov $4,%rbx
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sub %rcx,%rbx
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mov $64,%rcx
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sub %r8,%rcx
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mov $0,%r12
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mov $0,%rax
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mov (%rdx,%rbx,8),%r8
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cmp $0,%rbx
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jge skiplp
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ALIGN(16)
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lp:
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mov 8(%rdx,%rbx,8),%r9
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mov 16(%rdx,%rbx,8),%r10
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mov 24(%rdx,%rbx,8),%r11
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shrd %cl,%r8,%r12
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shrd %cl,%r9,%r8
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shrd %cl,%r10,%r9
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shrd %cl,%r11,%r10
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sahf
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adc (%rsi,%rbx,8),%r12
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mov %r12,(%rdi,%rbx,8)
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adc 8(%rsi,%rbx,8),%r8
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mov %r11,%r12
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mov %r8,8(%rdi,%rbx,8)
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adc 16(%rsi,%rbx,8),%r9
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adc 24(%rsi,%rbx,8),%r10
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mov %r10,24(%rdi,%rbx,8)
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mov %r9,16(%rdi,%rbx,8)
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lahf
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mov 32(%rdx,%rbx,8),%r8
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add $4,%rbx
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jnc lp
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ALIGN(16)
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skiplp:
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cmp $2,%rbx
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ja case0
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je case1
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jp case2
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case3:
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shrd %cl,%r8,%r12
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mov 8(%rdx,%rbx,8),%r9
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mov 16(%rdx,%rbx,8),%r10
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mov 24(%rdx,%rbx,8),%r11
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shrd %cl,%r9,%r8
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shrd %cl,%r10,%r9
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shrd %cl,%r11,%r10
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sahf
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adc (%rsi,%rbx,8),%r12
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mov %r12,(%rdi,%rbx,8)
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adc 8(%rsi,%rbx,8),%r8
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mov %r11,%r12
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mov %r8,8(%rdi,%rbx,8)
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adc 16(%rsi,%rbx,8),%r9
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adc 24(%rsi,%rbx,8),%r10
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mov %r10,24(%rdi,%rbx,8)
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mov %r9,16(%rdi,%rbx,8)
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lahf
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shr %cl,%r12
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sahf
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adc $0,%r12
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mov %r12,%rax
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pop %rbx
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pop %r12
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ret
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case2:
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shrd %cl,%r8,%r12
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mov 8(%rdx,%rbx,8),%r9
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shrd %cl,%r9,%r8
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mov 16(%rdx,%rbx,8),%r10
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shrd %cl,%r10,%r9
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shr %cl,%r10
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sahf
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adc (%rsi,%rbx,8),%r12
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mov %r12,(%rdi,%rbx,8)
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adc 8(%rsi,%rbx,8),%r8
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mov $0,%rax
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mov %r8,8(%rdi,%rbx,8)
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adc 16(%rsi,%rbx,8),%r9
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adc %r10,%rax
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mov %r9,16(%rdi,%rbx,8)
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pop %rbx
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pop %r12
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ret
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case1:
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shrd %cl,%r8,%r12
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mov 8(%rdx,%rbx,8),%r9
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shrd %cl,%r9,%r8
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shr %cl,%r9
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sahf
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adc (%rsi,%rbx,8),%r12
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mov %r12,(%rdi,%rbx,8)
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adc 8(%rsi,%rbx,8),%r8
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mov $0,%rax
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mov %r8,8(%rdi,%rbx,8)
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adc %r9,%rax
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pop %rbx
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pop %r12
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ret
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case0:
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shrd %cl,%r8,%r12
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shr %cl,%r8
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sahf
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adc (%rsi,%rbx,8),%r12
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mov %r12,(%rdi,%rbx,8)
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adc $0,%r8
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mov %r8,%rax
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pop %rbx
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pop %r12
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ret
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EPILOGUE()
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