nb_kernel030_x86_64_sse2.s
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#### $Id: nb_kernel030_x86_64_sse2.s,v 1.4.2.3 2006/09/22 08:40:31 lindahl 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_kernel030_x86_64_sse2.globl _nb_kernel030_x86_64_sse2nb_kernel030_x86_64_sse2: _nb_kernel030_x86_64_sse2: ## Room for return address and rbp (16 bytes).set nb030_fshift, 16.set nb030_gid, 24.set nb030_pos, 32.set nb030_faction, 40.set nb030_charge, 48.set nb030_p_facel, 56.set nb030_argkrf, 64.set nb030_argcrf, 72.set nb030_Vc, 80.set nb030_type, 88.set nb030_p_ntype, 96.set nb030_vdwparam, 104.set nb030_Vvdw, 112.set nb030_p_tabscale, 120.set nb030_VFtab, 128.set nb030_invsqrta, 136.set nb030_dvda, 144.set nb030_p_gbtabscale, 152.set nb030_GBtab, 160.set nb030_p_nthreads, 168.set nb030_count, 176.set nb030_mtx, 184.set nb030_outeriter, 192.set nb030_inneriter, 200.set nb030_work, 208 ## stack offsets for local variables ## bottom of stack is cache-aligned for sse2 use .set nb030_ix, 0.set nb030_iy, 16.set nb030_iz, 32.set nb030_dx, 48.set nb030_dy, 64.set nb030_dz, 80.set nb030_two, 96.set nb030_tsc, 112.set nb030_c6, 128.set nb030_c12, 144.set nb030_fscal, 160.set nb030_Vvdwtot, 176.set nb030_fix, 192.set nb030_fiy, 208.set nb030_fiz, 224.set nb030_half, 240.set nb030_three, 256.set nb030_is3, 272.set nb030_ii3, 276.set nb030_nri, 280.set nb030_iinr, 288.set nb030_jindex, 296.set nb030_jjnr, 304.set nb030_shift, 312.set nb030_shiftvec, 320.set nb030_innerjjnr, 328.set nb030_ntia, 336.set nb030_innerk, 340.set nb030_n, 344.set nb030_nn1, 348.set nb030_ntype, 352.set nb030_nouter, 356.set nb030_ninner, 360 push %rbp movq %rsp,%rbp push %rbx emms push %r12 push %r13 push %r14 push %r15 subq $376,%rsp ## local variable stack space (n*16+8) ## zero 32-bit iteration counters movl $0,%eax movl %eax,nb030_nouter(%rsp) movl %eax,nb030_ninner(%rsp) movl (%rdi),%edi movl %edi,nb030_nri(%rsp) movq %rsi,nb030_iinr(%rsp) movq %rdx,nb030_jindex(%rsp) movq %rcx,nb030_jjnr(%rsp) movq %r8,nb030_shift(%rsp) movq %r9,nb030_shiftvec(%rsp) movq nb030_p_ntype(%rbp),%rdi movl (%rdi),%edi movl %edi,nb030_ntype(%rsp) movq nb030_p_tabscale(%rbp),%rax movsd (%rax),%xmm3 shufpd $0,%xmm3,%xmm3 movapd %xmm3,nb030_tsc(%rsp) ## create constant floating-point factors on stack movl $0x00000000,%eax ## lower half of double half IEEE (hex) movl $0x3fe00000,%ebx movl %eax,nb030_half(%rsp) movl %ebx,nb030_half+4(%rsp) movsd nb030_half(%rsp),%xmm1 shufpd $0,%xmm1,%xmm1 ## splat to all elements movapd %xmm1,%xmm3 addpd %xmm3,%xmm3 ## one movapd %xmm3,%xmm2 addpd %xmm2,%xmm2 ## two addpd %xmm2,%xmm3 ## three movapd %xmm1,nb030_half(%rsp) movapd %xmm2,nb030_two(%rsp) movapd %xmm3,nb030_three(%rsp)_nb_kernel030_x86_64_sse2.nb030_threadloop: movq nb030_count(%rbp),%rsi ## pointer to sync counter movl (%rsi),%eax_nb_kernel030_x86_64_sse2.nb030_spinlock: movl %eax,%ebx ## ebx=*count=nn0 addl $1,%ebx ## ebx=nn1=nn0+10 lock cmpxchgl %ebx,(%rsi) ## write nn1 to *counter, ## if it hasnt changed. ## or reread *counter to eax. pause ## -> better p4 performance jnz _nb_kernel030_x86_64_sse2.nb030_spinlock ## if(nn1>nri) nn1=nri movl nb030_nri(%rsp),%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,nb030_n(%rsp) movl %ebx,nb030_nn1(%rsp) subl %eax,%ebx ## calc number of outer lists movl %eax,%esi ## copy n to esi jg _nb_kernel030_x86_64_sse2.nb030_outerstart jmp _nb_kernel030_x86_64_sse2.nb030_end_nb_kernel030_x86_64_sse2.nb030_outerstart: ## ebx contains number of outer iterations addl nb030_nouter(%rsp),%ebx movl %ebx,nb030_nouter(%rsp)_nb_kernel030_x86_64_sse2.nb030_outer: movq nb030_shift(%rsp),%rax ## rax = pointer into shift[] movl (%rax,%rsi,4),%ebx ## rbx=shift[n] lea (%rbx,%rbx,2),%rbx ## rbx=3*is movl %ebx,nb030_is3(%rsp) ## store is3 movq nb030_shiftvec(%rsp),%rax ## rax = base of shiftvec[] movsd (%rax,%rbx,8),%xmm0 movsd 8(%rax,%rbx,8),%xmm1 movsd 16(%rax,%rbx,8),%xmm2 movq nb030_iinr(%rsp),%rcx ## rcx = pointer into iinr[] movl (%rcx,%rsi,4),%ebx ## ebx =ii movq nb030_type(%rbp),%rdx movl (%rdx,%rbx,4),%edx imull nb030_ntype(%rsp),%edx shll %edx movl %edx,nb030_ntia(%rsp) lea (%rbx,%rbx,2),%rbx ## rbx = 3*ii=ii3 movq nb030_pos(%rbp),%rax ## rax = base of pos[] addsd (%rax,%rbx,8),%xmm0 addsd 8(%rax,%rbx,8),%xmm1 addsd 16(%rax,%rbx,8),%xmm2 shufpd $0,%xmm0,%xmm0 shufpd $0,%xmm1,%xmm1 shufpd $0,%xmm2,%xmm2 movapd %xmm0,nb030_ix(%rsp) movapd %xmm1,nb030_iy(%rsp) movapd %xmm2,nb030_iz(%rsp) movl %ebx,nb030_ii3(%rsp) ## clear tot potential and i forces xorpd %xmm4,%xmm4 movapd %xmm4,nb030_Vvdwtot(%rsp) movapd %xmm4,nb030_fix(%rsp) movapd %xmm4,nb030_fiy(%rsp) movapd %xmm4,nb030_fiz(%rsp) movq nb030_jindex(%rsp),%rax movl (%rax,%rsi,4),%ecx ## jindex[n] movl 4(%rax,%rsi,4),%edx ## jindex[n+1] subl %ecx,%edx ## number of innerloop atoms movq nb030_pos(%rbp),%rsi movq nb030_faction(%rbp),%rdi movq nb030_jjnr(%rsp),%rax shll $2,%ecx addq %rcx,%rax movq %rax,nb030_innerjjnr(%rsp) ## pointer to jjnr[nj0] movl %edx,%ecx subl $2,%edx addl nb030_ninner(%rsp),%ecx movl %ecx,nb030_ninner(%rsp) addl $0,%edx movl %edx,nb030_innerk(%rsp) ## number of innerloop atoms jge _nb_kernel030_x86_64_sse2.nb030_unroll_loop jmp _nb_kernel030_x86_64_sse2.nb030_checksingle_nb_kernel030_x86_64_sse2.nb030_unroll_loop: ## twice unrolled innerloop here movq nb030_innerjjnr(%rsp),%rdx ## pointer to jjnr[k] movl (%rdx),%r8d movl 4(%rdx),%r9d addq $8,nb030_innerjjnr(%rsp) ## advance pointer (unrolled 2) movq nb030_pos(%rbp),%rsi ## base of pos[] lea (%r8,%r8,2),%rax ## replace jnr with j3 lea (%r9,%r9,2),%rbx ## move two coordinates to xmm4-xmm6 movlpd (%rsi,%rax,8),%xmm4 movlpd 8(%rsi,%rax,8),%xmm5 movlpd 16(%rsi,%rax,8),%xmm6 movhpd (%rsi,%rbx,8),%xmm4 movhpd 8(%rsi,%rbx,8),%xmm5 movhpd 16(%rsi,%rbx,8),%xmm6 ## calc dr subpd nb030_ix(%rsp),%xmm4 subpd nb030_iy(%rsp),%xmm5 subpd nb030_iz(%rsp),%xmm6 ## store dr movapd %xmm4,nb030_dx(%rsp) movapd %xmm5,nb030_dy(%rsp) movapd %xmm6,nb030_dz(%rsp) movq nb030_type(%rbp),%rsi ## square it mulpd %xmm4,%xmm4 mulpd %xmm5,%xmm5 mulpd %xmm6,%xmm6 addpd %xmm5,%xmm4 addpd %xmm6,%xmm4 ## rsq in xmm4 movl (%rsi,%r8,4),%r8d movl (%rsi,%r9,4),%r9d cvtpd2ps %xmm4,%xmm5 rsqrtps %xmm5,%xmm5 cvtps2pd %xmm5,%xmm2 ## lu in low xmm2 ## lookup seed in xmm2 movapd %xmm2,%xmm5 ## copy of lu mulpd %xmm2,%xmm2 ## lu*lu movapd nb030_three(%rsp),%xmm1 mulpd %xmm4,%xmm2 ## rsq*lu*lu movapd nb030_half(%rsp),%xmm0 subpd %xmm2,%xmm1 ## 30-rsq*lu*lu mulpd %xmm5,%xmm1 mulpd %xmm0,%xmm1 ## xmm0=iter1 of rinv (new lu) shll %r8d shll %r9d movapd %xmm1,%xmm5 ## copy of lu mulpd %xmm1,%xmm1 ## lu*lu movapd nb030_three(%rsp),%xmm2 mulpd %xmm4,%xmm1 ## rsq*lu*lu movapd nb030_half(%rsp),%xmm0 subpd %xmm1,%xmm2 ## 30-rsq*lu*lu mulpd %xmm5,%xmm2 mulpd %xmm0,%xmm2 ## xmm2=iter2 of rinv (new lu) movl nb030_ntia(%rsp),%edi addl %edi,%r8d addl %edi,%r9d mulpd %xmm2,%xmm4 ## xmm4=r mulpd nb030_tsc(%rsp),%xmm4 cvttpd2pi %xmm4,%mm6 ## mm6 = lu idx cvtpi2pd %mm6,%xmm5 subpd %xmm5,%xmm4 movapd %xmm4,%xmm1 ## xmm1=eps ## xmm2=rinv movapd %xmm4,%xmm3 ## eps pslld $3,%mm6 ## idx *= 8 movq nb030_VFtab(%rbp),%rsi movd %mm6,%r10d psrlq $32,%mm6 movd %mm6,%r11d ## indices in r10, r11. Load dispersion and repulsion tables in parallel. movapd (%rsi,%r10,8),%xmm4 ## Y1d F1d movapd (%rsi,%r11,8),%xmm12 ## Y2d F2d movapd 32(%rsi,%r10,8),%xmm8 ## Y1r F1r movapd 32(%rsi,%r11,8),%xmm13 ## Y2r F2r movapd %xmm4,%xmm5 movapd %xmm8,%xmm9 unpcklpd %xmm12,%xmm4 ## Y1d Y2d unpckhpd %xmm12,%xmm5 ## F1d F2d unpcklpd %xmm13,%xmm8 ## Y1r Y2r unpckhpd %xmm13,%xmm9 ## F1r F2r movapd 16(%rsi,%r10,8),%xmm6 ## G1d H1d movapd 16(%rsi,%r11,8),%xmm12 ## G2d H2d movapd 48(%rsi,%r10,8),%xmm10 ## G1r H1r movapd 48(%rsi,%r11,8),%xmm13 ## G2r H2r movapd %xmm6,%xmm7 movapd %xmm10,%xmm11 unpcklpd %xmm12,%xmm6 ## G1d G2d unpckhpd %xmm12,%xmm7 ## H1d H2d unpcklpd %xmm13,%xmm10 ## G1r G2r unpckhpd %xmm13,%xmm11 ## H1r H2r ## tables ready, in xmm4-xmm7 and xmm8-xmm11 movq nb030_vdwparam(%rbp),%rsi mulpd %xmm1,%xmm7 ## Heps mulpd %xmm1,%xmm11 movlpd (%rsi,%r8,8),%xmm12 ## c6a movlpd (%rsi,%r9,8),%xmm0 ## c6b mulpd %xmm1,%xmm6 ## Geps mulpd %xmm1,%xmm10 mulpd %xmm1,%xmm7 ## Heps2 mulpd %xmm1,%xmm11 movhpd 8(%rsi,%r8,8),%xmm12 ## c6a c12a movhpd 8(%rsi,%r9,8),%xmm0 ## c6b c12b addpd %xmm6,%xmm5 ## F+Geps addpd %xmm10,%xmm9 addpd %xmm7,%xmm5 ## F+Geps+Heps2 = Fp addpd %xmm11,%xmm9 addpd %xmm7,%xmm7 ## 2*Heps2 addpd %xmm11,%xmm11 addpd %xmm6,%xmm7 ## 2*Heps2+Geps addpd %xmm10,%xmm11 movapd %xmm12,%xmm13 unpcklpd %xmm0,%xmm12 unpckhpd %xmm0,%xmm13 addpd %xmm5,%xmm7 ## FF = Fp + 2*Heps2 + Geps addpd %xmm9,%xmm11 mulpd %xmm1,%xmm5 ## eps*Fp mulpd %xmm1,%xmm9 addpd %xmm4,%xmm5 ## VV addpd %xmm8,%xmm9 mulpd %xmm12,%xmm5 ## VV*c6 = vnb6 mulpd %xmm13,%xmm9 ## VV*c12 = vnb12 addpd %xmm9,%xmm5 addpd nb030_Vvdwtot(%rsp),%xmm5 movapd %xmm5,nb030_Vvdwtot(%rsp) mulpd %xmm12,%xmm7 ## FF*c6 = fnb6 mulpd %xmm13,%xmm11 ## FF*c12 = fnb12 addpd %xmm11,%xmm7 movq nb030_faction(%rbp),%rdi ## the fj's - start by combining forces from memory movlpd (%rdi,%rax,8),%xmm3 movlpd 8(%rdi,%rax,8),%xmm4 movlpd 16(%rdi,%rax,8),%xmm5 mulpd nb030_tsc(%rsp),%xmm7 mulpd %xmm2,%xmm7 xorpd %xmm9,%xmm9 subpd %xmm7,%xmm9 movapd %xmm9,%xmm10 movapd %xmm9,%xmm11 movhpd (%rdi,%rbx,8),%xmm3 movhpd 8(%rdi,%rbx,8),%xmm4 movhpd 16(%rdi,%rbx,8),%xmm5 movapd nb030_fix(%rsp),%xmm12 movapd nb030_fiy(%rsp),%xmm13 movapd nb030_fiz(%rsp),%xmm14 mulpd nb030_dx(%rsp),%xmm9 mulpd nb030_dy(%rsp),%xmm10 mulpd nb030_dz(%rsp),%xmm11 ## accumulate i forces addpd %xmm9,%xmm12 addpd %xmm10,%xmm13 addpd %xmm11,%xmm14 movapd %xmm12,nb030_fix(%rsp) movapd %xmm13,nb030_fiy(%rsp) movapd %xmm14,nb030_fiz(%rsp)⌨️ 快捷键说明
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