nb_kernel400_x86_64_sse.s
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#### $Id: nb_kernel400_x86_64_sse.s,v 1.4.2.3 2006/09/22 08:32:51 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_kernel400_x86_64_sse.globl _nb_kernel400_x86_64_ssenb_kernel400_x86_64_sse: _nb_kernel400_x86_64_sse: ## Room for return address and rbp (16 bytes).set nb400_fshift, 16.set nb400_gid, 24.set nb400_pos, 32.set nb400_faction, 40.set nb400_charge, 48.set nb400_p_facel, 56.set nb400_argkrf, 64.set nb400_argcrf, 72.set nb400_Vc, 80.set nb400_type, 88.set nb400_p_ntype, 96.set nb400_vdwparam, 104.set nb400_Vvdw, 112.set nb400_p_tabscale, 120.set nb400_VFtab, 128.set nb400_invsqrta, 136.set nb400_dvda, 144.set nb400_p_gbtabscale, 152.set nb400_GBtab, 160.set nb400_p_nthreads, 168.set nb400_count, 176.set nb400_mtx, 184.set nb400_outeriter, 192.set nb400_inneriter, 200.set nb400_work, 208 ## 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_nri, 336.set nb400_iinr, 344.set nb400_jindex, 352.set nb400_jjnr, 360.set nb400_shift, 368.set nb400_shiftvec, 376.set nb400_facel, 384.set nb400_innerjjnr, 392.set nb400_is3, 400.set nb400_ii3, 404.set nb400_ii, 408.set nb400_innerk, 412.set nb400_n, 416.set nb400_nn1, 420.set nb400_nouter, 424.set nb400_ninner, 428.set nb400_jnra, 432.set nb400_jnrb, 436.set nb400_jnrc, 440.set nb400_jnrd, 444 push %rbp movq %rsp,%rbp push %rbx emms push %r12 push %r13 push %r14 push %r15 subq $456,%rsp ## local variable stack space (n*16+8) ## zero 32-bit iteration counters movl $0,%eax movl %eax,nb400_nouter(%rsp) movl %eax,nb400_ninner(%rsp) movl (%rdi),%edi movl %edi,nb400_nri(%rsp) movq %rsi,nb400_iinr(%rsp) movq %rdx,nb400_jindex(%rsp) movq %rcx,nb400_jjnr(%rsp) movq %r8,nb400_shift(%rsp) movq %r9,nb400_shiftvec(%rsp) movq nb400_p_facel(%rbp),%rsi movss (%rsi),%xmm0 movss %xmm0,nb400_facel(%rsp) movq nb400_p_gbtabscale(%rbp),%rbx movss (%rbx),%xmm4 shufps $0,%xmm4,%xmm4 movaps %xmm4,nb400_gbtsc(%rsp) ## create constant floating-point factors on stack movl $0x3f000000,%eax ## half in IEEE (hex) movl %eax,nb400_half(%rsp) movss nb400_half(%rsp),%xmm1 shufps $0,%xmm1,%xmm1 ## splat to all elements movaps %xmm1,%xmm2 addps %xmm2,%xmm2 ## one movaps %xmm2,%xmm3 addps %xmm2,%xmm2 ## two addps %xmm2,%xmm3 ## three movaps %xmm1,nb400_half(%rsp) movaps %xmm2,nb400_two(%rsp) movaps %xmm3,nb400_three(%rsp)_nb_kernel400_x86_64_sse.nb400_threadloop: movq nb400_count(%rbp),%rsi ## pointer to sync counter movl (%rsi),%eax_nb_kernel400_x86_64_sse.nb400_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_kernel400_x86_64_sse.nb400_spinlock ## if(nn1>nri) nn1=nri movl nb400_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,nb400_n(%rsp) movl %ebx,nb400_nn1(%rsp) subl %eax,%ebx ## calc number of outer lists movl %eax,%esi ## copy n to esi jg _nb_kernel400_x86_64_sse.nb400_outerstart jmp _nb_kernel400_x86_64_sse.nb400_end_nb_kernel400_x86_64_sse.nb400_outerstart: ## ebx contains number of outer iterations addl nb400_nouter(%rsp),%ebx movl %ebx,nb400_nouter(%rsp)_nb_kernel400_x86_64_sse.nb400_outer: movq nb400_shift(%rsp),%rax ## rax = pointer into shift[] movl (%rax,%rsi,4),%ebx ## ebx=shift[n] lea (%rbx,%rbx,2),%rbx ## rbx=3*is movl %ebx,nb400_is3(%rsp) ## store is3 movq nb400_shiftvec(%rsp),%rax ## rax = base of shiftvec[] movss (%rax,%rbx,4),%xmm0 movss 4(%rax,%rbx,4),%xmm1 movss 8(%rax,%rbx,4),%xmm2 movq nb400_iinr(%rsp),%rcx ## rcx = pointer into iinr[] movl (%rcx,%rsi,4),%ebx ## ebx =ii movl %ebx,nb400_ii(%rsp) movq nb400_charge(%rbp),%rdx movss (%rdx,%rbx,4),%xmm3 mulss nb400_facel(%rsp),%xmm3 shufps $0,%xmm3,%xmm3 movq nb400_invsqrta(%rbp),%rdx ## load invsqrta[ii] movss (%rdx,%rbx,4),%xmm4 shufps $0,%xmm4,%xmm4 lea (%rbx,%rbx,2),%rbx ## rbx = 3*ii=ii3 movq nb400_pos(%rbp),%rax ## rax = base of pos[] addss (%rax,%rbx,4),%xmm0 addss 4(%rax,%rbx,4),%xmm1 addss 8(%rax,%rbx,4),%xmm2 movaps %xmm3,nb400_iq(%rsp) movaps %xmm4,nb400_isai(%rsp) shufps $0,%xmm0,%xmm0 shufps $0,%xmm1,%xmm1 shufps $0,%xmm2,%xmm2 movaps %xmm0,nb400_ix(%rsp) movaps %xmm1,nb400_iy(%rsp) movaps %xmm2,nb400_iz(%rsp) movl %ebx,nb400_ii3(%rsp) ## clear vctot and i forces xorps %xmm4,%xmm4 movaps %xmm4,nb400_dvdasum(%rsp) movaps %xmm4,%xmm12 movaps %xmm4,%xmm13 movaps %xmm4,%xmm14 movaps %xmm4,%xmm15 movq nb400_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 nb400_pos(%rbp),%rsi movq nb400_faction(%rbp),%rdi movq nb400_jjnr(%rsp),%rax shll $2,%ecx addq %rcx,%rax movq %rax,nb400_innerjjnr(%rsp) ## pointer to jjnr[nj0] movl %edx,%ecx subl $4,%edx addl nb400_ninner(%rsp),%ecx movl %ecx,nb400_ninner(%rsp) addl $0,%edx movl %edx,nb400_innerk(%rsp) ## number of innerloop atoms jge _nb_kernel400_x86_64_sse.nb400_unroll_loop jmp _nb_kernel400_x86_64_sse.nb400_finish_inner_nb_kernel400_x86_64_sse.nb400_unroll_loop: ## quad-unroll innerloop here movq nb400_innerjjnr(%rsp),%rdx ## pointer to jjnr[k] movl (%rdx),%eax movl 4(%rdx),%ebx movl 8(%rdx),%ecx movl 12(%rdx),%edx ## eax-edx=jnr1-4 addq $16,nb400_innerjjnr(%rsp) ## advance pointer (unrolled 4) movq nb400_pos(%rbp),%rsi ## base of pos[] lea (%rax,%rax,2),%r8 ## j3 lea (%rbx,%rbx,2),%r9 lea (%rcx,%rcx,2),%r10 lea (%rdx,%rdx,2),%r11 ## move four coordinates to xmm0-xmm2 movlps (%rsi,%r8,4),%xmm4 movlps (%rsi,%r10,4),%xmm5 movss 8(%rsi,%r8,4),%xmm2 movss 8(%rsi,%r10,4),%xmm6 movhps (%rsi,%r9,4),%xmm4 movhps (%rsi,%r11,4),%xmm5 movss 8(%rsi,%r9,4),%xmm0 movss 8(%rsi,%r11,4),%xmm1 shufps $0,%xmm0,%xmm2 shufps $0,%xmm1,%xmm6 movaps %xmm4,%xmm0 movaps %xmm4,%xmm1 shufps $136,%xmm6,%xmm2 ## 10001000 shufps $136,%xmm5,%xmm0 ## 10001000 shufps $221,%xmm5,%xmm1 ## 11011101 ## calc dr subps nb400_ix(%rsp),%xmm0 subps nb400_iy(%rsp),%xmm1 subps nb400_iz(%rsp),%xmm2 ## store dr movaps %xmm0,%xmm9 movaps %xmm1,%xmm10 movaps %xmm2,%xmm11 ## square it mulps %xmm0,%xmm0 mulps %xmm1,%xmm1 mulps %xmm2,%xmm2 addps %xmm1,%xmm0 addps %xmm2,%xmm0 movaps %xmm0,%xmm4 ## rsq in xmm4 ## load isaj movq nb400_invsqrta(%rbp),%rsi movss (%rsi,%rax,4),%xmm0 movss (%rsi,%rcx,4),%xmm1 movss (%rsi,%rbx,4),%xmm2 movss (%rsi,%rdx,4),%xmm3 movaps nb400_isai(%rsp),%xmm7 shufps $0,%xmm2,%xmm0 shufps $0,%xmm3,%xmm1 shufps $136,%xmm1,%xmm0 ## 10001000 ;# all isaj in xmm3 mulps %xmm0,%xmm7 movaps %xmm7,nb400_isaprod(%rsp) movaps %xmm7,%xmm1 mulps nb400_gbtsc(%rsp),%xmm1 movaps %xmm1,nb400_gbscale(%rsp) movq nb400_charge(%rbp),%rsi ## base of charge[] movss (%rsi,%rax,4),%xmm0 movss (%rsi,%rcx,4),%xmm1 movss (%rsi,%rbx,4),%xmm2 movss (%rsi,%rdx,4),%xmm3 mulps nb400_iq(%rsp),%xmm7 shufps $0,%xmm2,%xmm0 shufps $0,%xmm3,%xmm1 shufps $136,%xmm1,%xmm0 ## 10001000 ;# all charges in xmm3 mulps %xmm7,%xmm0 movaps %xmm0,nb400_qq(%rsp) rsqrtps %xmm4,%xmm5 ## lookup seed in xmm5 movaps %xmm5,%xmm2 mulps %xmm5,%xmm5 movaps nb400_three(%rsp),%xmm1 mulps %xmm4,%xmm5 ## rsq*lu*lu movaps nb400_half(%rsp),%xmm0 subps %xmm5,%xmm1 ## 30-rsq*lu*lu mulps %xmm2,%xmm1 mulps %xmm1,%xmm0 ## xmm0=rinv mulps %xmm0,%xmm4 ## xmm4=r movaps %xmm4,nb400_r(%rsp) mulps nb400_gbscale(%rsp),%xmm4 ## truncate and convert to integers cvttps2dq %xmm4,%xmm5 ## convert back to float cvtdq2ps %xmm5,%xmm6 ## multiply by 4 pslld $2,%xmm5 ## move to integer registers movhlps %xmm5,%xmm7 movd %xmm5,%r12d movd %xmm7,%r14d pshufd $1,%xmm5,%xmm5 pshufd $1,%xmm7,%xmm7 movd %xmm5,%r13d movd %xmm7,%r15d ## calculate eps subps %xmm6,%xmm4 movaps %xmm4,%xmm1 ##eps movq nb400_GBtab(%rbp),%rsi ## load table data movlps (%rsi,%r12,4),%xmm5 movlps (%rsi,%r14,4),%xmm7 movhps (%rsi,%r13,4),%xmm5 movhps (%rsi,%r15,4),%xmm7 movaps %xmm5,%xmm4 shufps $136,%xmm7,%xmm4 ## 10001000 shufps $221,%xmm7,%xmm5 ## 11011101 movlps 8(%rsi,%r12,4),%xmm7 movlps 8(%rsi,%r14,4),%xmm8 movhps 8(%rsi,%r13,4),%xmm7 movhps 8(%rsi,%r15,4),%xmm8 movaps %xmm7,%xmm6 shufps $136,%xmm8,%xmm6 ## 10001000 shufps $221,%xmm8,%xmm7 ## 11011101 ## table data ready in xmm4-xmm7 mulps %xmm1,%xmm7 ## Heps mulps %xmm1,%xmm6 ## xmm6=Geps mulps %xmm1,%xmm7 ## Heps2 addps %xmm6,%xmm5 addps %xmm7,%xmm5 ## xmm5=Fp addps %xmm7,%xmm7 ## two*Heps2 movaps nb400_qq(%rsp),%xmm3 addps %xmm6,%xmm7⌨️ 快捷键说明
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