src/gmxlib/nonbonded/nb_kernel_x86_64_sse/nb_kernel_x86_64_sse_test_asm_intel_syntax.s

   1 ;#
   2 ;# Gromacs 4.0                         Copyright (c) 1991-2003
   3 ;# David van der Spoel, Erik Lindahl
   4 ;#
   5 ;# This program is free software; you can redistribute it and/or
   6 ;# modify it under the terms of the GNU General Public License
   7 ;# as published by the Free Software Foundation; either version 2
   8 ;# of the License, or (at your option) any later version.
   9 ;#
  10 ;# To help us fund GROMACS development, we humbly ask that you cite
  11 ;# the research papers on the package. Check out http://www.gromacs.org
  12 ;#
  13 ;# And Hey:
  14 ;# Gnomes, ROck Monsters And Chili Sauce
  15 ;#
  16
  17 ;# These files require GNU binutils 2.10 or later, since we
  18 ;# use intel syntax for portability, or a recent version
  19 ;# of NASM that understands Extended 3DNow and SSE2 instructions.
  20 ;# (NASM is normally only used with MS Visual C++).
  21 ;# Since NASM and gnu as disagree on some definitions and use
  22 ;# completely different preprocessing options I have to introduce a
  23 ;# trick: NASM uses ';' for comments, while gnu as uses '#' on x86.
  24 ;# Gnu as treats ';' as a line break, i.e. ignores it. This is the
  25 ;# reason why all comments need both symbols...
  26 ;# The source is written for GNU as, with intel syntax. When you use
  27 ;# NASM we redefine a couple of things. The false if-statement around
  28 ;# the following code is seen by GNU as, but NASM doesn't see it, so
  29 ;# the code inside is read by NASM but not gcc.
  30
  31 ; .if 0    # block below only read by NASM
  32 %define .section        section
  33 %define .long           dd
  34 %define .align          align
  35 %define .globl          global
  36 ;# NASM only wants 'dword', not 'dword ptr'.
  37 %define ptr
  38 %macro .equiv 2
  39    %1 equ %2
  40 %endmacro
  41 ; .endif                   # End of NASM-specific block
  42 ; .intel_syntax noprefix   # Line only read by gnu as
  43
  44
  45 .section .text
  46
  47 .globl nb_kernel_x86_64_sse_test_asm
  48 .globl _nb_kernel_x86_64_sse_test_asm
  49 nb_kernel_x86_64_sse_test_asm:
  50 _nb_kernel_x86_64_sse_test_asm:
  51         push  rbx               ;# test 64-bit register
  52         emms
  53         xorps xmm0, xmm0        ;# test SSE
  54         emms
  55         pop   rbx               ;# test 64-bit register
  56         ret
  57
  58
  59