nb_kernel400_ia32_sse.s
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#### $Id: nb_kernel400_ia32_sse.s,v 1.1.2.2 2007/11/28 09:36:34 spoel Exp $#### Gromacs 4.0 Copyright (c) 1991-2003 ## David van der Spoel, Erik Lindahl#### This program is free software; you can redistribute it and/or## modify it under the terms of the GNU General Public License## as published by the Free Software Foundation; either version 2## of the License, or (at your option) any later version.#### To help us fund GROMACS development, we humbly ask that you cite## the research papers on the package. Check out http://www.gromacs.org## ## And Hey:## Gnomes, ROck Monsters And Chili Sauce##.globl nb_kernel400_ia32_sse.globl _nb_kernel400_ia32_ssenb_kernel400_ia32_sse: _nb_kernel400_ia32_sse: .set nb400_p_nri, 8.set nb400_iinr, 12.set nb400_jindex, 16.set nb400_jjnr, 20.set nb400_shift, 24.set nb400_shiftvec, 28.set nb400_fshift, 32.set nb400_gid, 36.set nb400_pos, 40.set nb400_faction, 44.set nb400_charge, 48.set nb400_p_facel, 52.set nb400_argkrf, 56.set nb400_argcrf, 60.set nb400_Vc, 64.set nb400_type, 68.set nb400_p_ntype, 72.set nb400_vdwparam, 76.set nb400_Vvdw, 80.set nb400_p_tabscale, 84.set nb400_VFtab, 88.set nb400_invsqrta, 92.set nb400_dvda, 96.set nb400_p_gbtabscale, 100.set nb400_GBtab, 104.set nb400_p_nthreads, 108.set nb400_count, 112.set nb400_mtx, 116.set nb400_outeriter, 120.set nb400_inneriter, 124.set nb400_work, 128 ## stack offsets for local variables ## bottom of stack is cache-aligned for sse use .set nb400_ix, 0.set nb400_iy, 16.set nb400_iz, 32.set nb400_iq, 48.set nb400_dx, 64.set nb400_dy, 80.set nb400_dz, 96.set nb400_two, 112.set nb400_gbtsc, 128.set nb400_qq, 144.set nb400_r, 160.set nb400_vctot, 176.set nb400_fix, 192.set nb400_fiy, 208.set nb400_fiz, 224.set nb400_half, 240.set nb400_three, 256.set nb400_isai, 272.set nb400_isaprod, 288.set nb400_dvdasum, 304.set nb400_gbscale, 320.set nb400_is3, 336.set nb400_ii3, 340.set nb400_ii, 344.set nb400_innerjjnr, 348.set nb400_innerk, 352.set nb400_n, 356.set nb400_nn1, 360.set nb400_jnra, 364.set nb400_jnrb, 368.set nb400_jnrc, 372.set nb400_jnrd, 376.set nb400_nri, 380.set nb400_facel, 384.set nb400_nouter, 388.set nb400_ninner, 392.set nb400_salign, 396 pushl %ebp movl %esp,%ebp pushl %eax pushl %ebx pushl %ecx pushl %edx pushl %esi pushl %edi subl $400,%esp ## local stack space movl %esp,%eax andl $0xf,%eax subl %eax,%esp movl %eax,nb400_salign(%esp) emms ## Move args passed by reference to stack movl nb400_p_nri(%ebp),%ecx movl nb400_p_facel(%ebp),%esi movl (%ecx),%ecx movl (%esi),%esi movl %ecx,nb400_nri(%esp) movl %esi,nb400_facel(%esp) ## zero iteration counters movl $0,%eax movl %eax,nb400_nouter(%esp) movl %eax,nb400_ninner(%esp) movl nb400_p_gbtabscale(%ebp),%eax movss (%eax),%xmm3 shufps $0,%xmm3,%xmm3 movaps %xmm3,nb400_gbtsc(%esp) ## create constant floating-point factors on stack movl $0x3f000000,%eax ## constant 0.5 in IEEE (hex) movl %eax,nb400_half(%esp) movss nb400_half(%esp),%xmm1 shufps $0,%xmm1,%xmm1 ## splat to all elements movaps %xmm1,%xmm2 addps %xmm2,%xmm2 ## constant 1.0 movaps %xmm2,%xmm3 addps %xmm2,%xmm2 ## constant 2.0 addps %xmm2,%xmm3 ## constant 3.0 movaps %xmm1,nb400_half(%esp) movaps %xmm2,nb400_two(%esp) movaps %xmm3,nb400_three(%esp)_nb_kernel400_ia32_sse.nb400_threadloop: movl nb400_count(%ebp),%esi ## pointer to sync counter movl (%esi),%eax_nb_kernel400_ia32_sse.nb400_spinlock: movl %eax,%ebx ## ebx=*count=nn0 addl $1,%ebx ## ebx=nn1=nn0+10 lock cmpxchgl %ebx,(%esi) ## write nn1 to *counter, ## if it hasnt changed. ## or reread *counter to eax. pause ## -> better p4 performance jnz _nb_kernel400_ia32_sse.nb400_spinlock ## if(nn1>nri) nn1=nri movl nb400_nri(%esp),%ecx movl %ecx,%edx subl %ebx,%ecx cmovlel %edx,%ebx ## if(nn1>nri) nn1=nri ## Cleared the spinlock if we got here. ## eax contains nn0, ebx contains nn1. movl %eax,nb400_n(%esp) movl %ebx,nb400_nn1(%esp) subl %eax,%ebx ## calc number of outer lists movl %eax,%esi ## copy n to esi jg _nb_kernel400_ia32_sse.nb400_outerstart jmp _nb_kernel400_ia32_sse.nb400_end_nb_kernel400_ia32_sse.nb400_outerstart: ## ebx contains number of outer iterations addl nb400_nouter(%esp),%ebx movl %ebx,nb400_nouter(%esp)_nb_kernel400_ia32_sse.nb400_outer: movl nb400_shift(%ebp),%eax ## eax = pointer into shift[] movl (%eax,%esi,4),%ebx ## ebx=shift[n] leal (%ebx,%ebx,2),%ebx ## ebx=3*is movl %ebx,nb400_is3(%esp) ## store is3 movl nb400_shiftvec(%ebp),%eax ## eax = base of shiftvec[] movss (%eax,%ebx,4),%xmm0 movss 4(%eax,%ebx,4),%xmm1 movss 8(%eax,%ebx,4),%xmm2 movl nb400_iinr(%ebp),%ecx ## ecx = pointer into iinr[] movl (%ecx,%esi,4),%ebx ## ebx =ii movl %ebx,nb400_ii(%esp) movl nb400_charge(%ebp),%edx movss (%edx,%ebx,4),%xmm3 mulss nb400_facel(%esp),%xmm3 shufps $0,%xmm3,%xmm3 movl nb400_invsqrta(%ebp),%edx ## load invsqrta[ii] movss (%edx,%ebx,4),%xmm4 shufps $0,%xmm4,%xmm4 leal (%ebx,%ebx,2),%ebx ## ebx = 3*ii=ii3 movl nb400_pos(%ebp),%eax ## eax = base of pos[] addss (%eax,%ebx,4),%xmm0 addss 4(%eax,%ebx,4),%xmm1 addss 8(%eax,%ebx,4),%xmm2 movaps %xmm3,nb400_iq(%esp) movaps %xmm4,nb400_isai(%esp) shufps $0,%xmm0,%xmm0 shufps $0,%xmm1,%xmm1 shufps $0,%xmm2,%xmm2 movaps %xmm0,nb400_ix(%esp) movaps %xmm1,nb400_iy(%esp) movaps %xmm2,nb400_iz(%esp) movl %ebx,nb400_ii3(%esp) ## clear vctot and i forces xorps %xmm4,%xmm4 movaps %xmm4,nb400_vctot(%esp) movaps %xmm4,nb400_dvdasum(%esp) movaps %xmm4,nb400_fix(%esp) movaps %xmm4,nb400_fiy(%esp) movaps %xmm4,nb400_fiz(%esp) movl nb400_jindex(%ebp),%eax movl (%eax,%esi,4),%ecx ## jindex[n] movl 4(%eax,%esi,4),%edx ## jindex[n+1] subl %ecx,%edx ## number of innerloop atoms movl nb400_pos(%ebp),%esi movl nb400_faction(%ebp),%edi movl nb400_jjnr(%ebp),%eax shll $2,%ecx addl %ecx,%eax movl %eax,nb400_innerjjnr(%esp) ## pointer to jjnr[nj0] movl %edx,%ecx subl $4,%edx addl nb400_ninner(%esp),%ecx movl %ecx,nb400_ninner(%esp) addl $0,%edx movl %edx,nb400_innerk(%esp) ## number of innerloop atoms jge _nb_kernel400_ia32_sse.nb400_unroll_loop jmp _nb_kernel400_ia32_sse.nb400_finish_inner_nb_kernel400_ia32_sse.nb400_unroll_loop: ## quad-unroll innerloop here movl nb400_innerjjnr(%esp),%edx ## pointer to jjnr[k] movl (%edx),%eax movl 4(%edx),%ebx movl 8(%edx),%ecx movl 12(%edx),%edx ## eax-edx=jnr1-4 addl $16,nb400_innerjjnr(%esp) ## advance pointer (unrolled 4) ## load isaj movl nb400_invsqrta(%ebp),%esi movss (%esi,%eax,4),%xmm3 movss (%esi,%ecx,4),%xmm4 movss (%esi,%ebx,4),%xmm6 movss (%esi,%edx,4),%xmm7 movaps nb400_isai(%esp),%xmm2 shufps $0,%xmm6,%xmm3 shufps $0,%xmm7,%xmm4 shufps $136,%xmm4,%xmm3 ## constant 10001000 ;# all isaj in xmm3 mulps %xmm3,%xmm2 movaps %xmm2,nb400_isaprod(%esp) movaps %xmm2,%xmm1 mulps nb400_gbtsc(%esp),%xmm1 movaps %xmm1,nb400_gbscale(%esp) movl nb400_charge(%ebp),%esi ## base of charge[] movss (%esi,%eax,4),%xmm3 movss (%esi,%ecx,4),%xmm4 movss (%esi,%ebx,4),%xmm6 movss (%esi,%edx,4),%xmm7 mulps nb400_iq(%esp),%xmm2 shufps $0,%xmm6,%xmm3 shufps $0,%xmm7,%xmm4 shufps $136,%xmm4,%xmm3 ## constant 10001000 ;# all charges in xmm3 mulps %xmm2,%xmm3 movaps %xmm3,nb400_qq(%esp) movl nb400_pos(%ebp),%esi ## base of pos[] movl %eax,nb400_jnra(%esp) movl %ebx,nb400_jnrb(%esp) movl %ecx,nb400_jnrc(%esp) movl %edx,nb400_jnrd(%esp) leal (%eax,%eax,2),%eax ## replace jnr with j3 leal (%ebx,%ebx,2),%ebx leal (%ecx,%ecx,2),%ecx leal (%edx,%edx,2),%edx ## move four coordinates to xmm0-xmm2 movlps (%esi,%eax,4),%xmm4 movlps (%esi,%ecx,4),%xmm5 movss 8(%esi,%eax,4),%xmm2 movss 8(%esi,%ecx,4),%xmm6 movhps (%esi,%ebx,4),%xmm4 movhps (%esi,%edx,4),%xmm5 movss 8(%esi,%ebx,4),%xmm0 movss 8(%esi,%edx,4),%xmm1 shufps $0,%xmm0,%xmm2 shufps $0,%xmm1,%xmm6 movaps %xmm4,%xmm0 movaps %xmm4,%xmm1 shufps $136,%xmm6,%xmm2 ## constant 10001000 shufps $136,%xmm5,%xmm0 ## constant 10001000 shufps $221,%xmm5,%xmm1 ## constant 11011101 ## move ix-iz to xmm4-xmm6 movaps nb400_ix(%esp),%xmm4 movaps nb400_iy(%esp),%xmm5 movaps nb400_iz(%esp),%xmm6 ## calc dr subps %xmm0,%xmm4 subps %xmm1,%xmm5 subps %xmm2,%xmm6 ## store dr movaps %xmm4,nb400_dx(%esp) movaps %xmm5,nb400_dy(%esp) movaps %xmm6,nb400_dz(%esp) ## square it mulps %xmm4,%xmm4 mulps %xmm5,%xmm5 mulps %xmm6,%xmm6 addps %xmm5,%xmm4 addps %xmm6,%xmm4 ## rsq in xmm4 rsqrtps %xmm4,%xmm5 ## lookup seed in xmm5 movaps %xmm5,%xmm2 mulps %xmm5,%xmm5 movaps nb400_three(%esp),%xmm1 mulps %xmm4,%xmm5 ## rsq*lu*lu movaps nb400_half(%esp),%xmm0 subps %xmm5,%xmm1 ## constant 30-rsq*lu*lu mulps %xmm2,%xmm1 mulps %xmm1,%xmm0 ## xmm0=rinv mulps %xmm0,%xmm4 ## xmm4=r movaps %xmm4,nb400_r(%esp) mulps nb400_gbscale(%esp),%xmm4 movhlps %xmm4,%xmm5 cvttps2pi %xmm4,%mm6 cvttps2pi %xmm5,%mm7 ## mm6/mm7 contain lu indices cvtpi2ps %mm6,%xmm6 cvtpi2ps %mm7,%xmm5 movlhps %xmm5,%xmm6 subps %xmm6,%xmm4 movaps %xmm4,%xmm1 ## xmm1=eps movaps %xmm1,%xmm2 mulps %xmm2,%xmm2 ## xmm2=eps2 pslld $2,%mm6 pslld $2,%mm7 movd %eax,%mm0 movd %ebx,%mm1 movd %ecx,%mm2 movd %edx,%mm3 movl nb400_GBtab(%ebp),%esi movd %mm6,%eax psrlq $32,%mm6 movd %mm7,%ecx psrlq $32,%mm7 movd %mm6,%ebx movd %mm7,%edx ## load coulomb table movaps (%esi,%eax,4),%xmm4 movaps (%esi,%ebx,4),%xmm5 movaps (%esi,%ecx,4),%xmm6 movaps (%esi,%edx,4),%xmm7 ## transpose, using xmm3 for scratch movaps %xmm6,%xmm3 shufps $0xEE,%xmm7,%xmm3 shufps $0x44,%xmm7,%xmm6 movaps %xmm4,%xmm7 shufps $0xEE,%xmm5,%xmm7 shufps $0x44,%xmm5,%xmm4 movaps %xmm4,%xmm5 shufps $0xDD,%xmm6,%xmm5 shufps $0x88,%xmm6,%xmm4 movaps %xmm7,%xmm6 shufps $0x88,%xmm3,%xmm6 shufps $0xDD,%xmm3,%xmm7 ## coulomb table ready, in xmm4-xmm7 mulps %xmm1,%xmm6 ## xmm6=Geps mulps %xmm2,%xmm7 ## xmm7=Heps2 addps %xmm6,%xmm5 addps %xmm7,%xmm5 ## xmm5=Fp mulps nb400_two(%esp),%xmm7 ## two*Heps2 movaps nb400_qq(%esp),%xmm3 addps %xmm6,%xmm7 addps %xmm5,%xmm7 ## xmm7=FF mulps %xmm1,%xmm5 ## xmm5=eps*Fp addps %xmm4,%xmm5 ## xmm5=VV mulps %xmm3,%xmm5 ## vcoul=qq*VV mulps %xmm7,%xmm3 ## fijC=FF*qq ## at this point mm5 contains vcoul and mm3 fijC ## get jnr from stack movl nb400_jnra(%esp),%eax movl nb400_jnrb(%esp),%ebx movl nb400_jnrc(%esp),%ecx⌨️ 快捷键说明
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