MythTV: greedyhmacros.h Source File

00001 
00002 // Copyright (c) 2001 Tom Barry.  All rights reserved.
00004 //
00005 //      This file is subject to the terms of the GNU General Public License as
00006 //      published by the Free Software Foundation.  A copy of this license is
00007 //      included with this software distribution in the file COPYING.  If you
00008 //      do not have a copy, you may obtain a copy by writing to the Free
00009 //      Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00010 //
00011 //      This software is distributed in the hope that it will be useful,
00012 //      but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 //      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 //      GNU General Public License for more details
00015 //
00017 
00018 // Define a few macros for CPU dependent instructions. 
00019 // I suspect I don't really understand how the C macro preprocessor works but
00020 // this seems to get the job done.          // TRB 7/01
00021 
00022 // BEFORE USING THESE YOU MUST SET:
00023 
00024 // #define SSE_TYPE SSE            (or MMX or 3DNOW)
00025 
00026 // some macros for pavgb instruction
00027 //      V_PAVGB(mmr1, mmr2, mmr work register, smask) mmr2 may = mmrw if you can trash it
00028 
00029 #define V_PAVGB_MMXT(mmr1, mmr2, mmrw, smask) \
00030         "movq    "mmr2",  "mmrw"\n\t"            \
00031         "pand    "smask", "mmrw"\n\t"            \
00032         "psrlw   $1,      "mmrw"\n\t"            \
00033         "pand    "smask", "mmr1"\n\t"            \
00034         "psrlw   $1,      "mmr1"\n\t"            \
00035         "paddusb "mmrw",  "mmr1"\n\t"
00036 #define V_PAVGB_SSE(mmr1, mmr2, mmrw, smask)      "pavgb   "mmr2", "mmr1"\n\t"
00037 #define V_PAVGB_3DNOW(mmr1, mmr2, mmrw, smask)    "pavgusb "mmr2", "mmr1"\n\t"
00038 #define V_PAVGB(mmr1, mmr2, mmrw, smask)          V_PAVGB2(mmr1, mmr2, mmrw, smask, SSE_TYPE) 
00039 #define V_PAVGB2(mmr1, mmr2, mmrw, smask, ssetyp) V_PAVGB3(mmr1, mmr2, mmrw, smask, ssetyp) 
00040 #define V_PAVGB3(mmr1, mmr2, mmrw, smask, ssetyp) V_PAVGB_##ssetyp(mmr1, mmr2, mmrw, smask) 
00041 
00042 // some macros for pmaxub instruction
00043 #define V_PMAXUB_MMXT(mmr1, mmr2) \
00044     "psubusb "mmr2", "mmr1"\n\t" \
00045     "paddusb "mmr2", "mmr1"\n\t"
00046 #define V_PMAXUB_SSE(mmr1, mmr2)      "pmaxub "mmr2", "mmr1"\n\t"
00047 #define V_PMAXUB_3DNOW(mmr1, mmr2)    V_PMAXUB_MMXT(mmr1, mmr2)  // use MMX version
00048 #define V_PMAXUB(mmr1, mmr2)          V_PMAXUB2(mmr1, mmr2, SSE_TYPE) 
00049 #define V_PMAXUB2(mmr1, mmr2, ssetyp) V_PMAXUB3(mmr1, mmr2, ssetyp) 
00050 #define V_PMAXUB3(mmr1, mmr2, ssetyp) V_PMAXUB_##ssetyp(mmr1, mmr2) 
00051 
00052 // some macros for pminub instruction
00053 //      V_PMINUB(mmr1, mmr2, mmr work register)     mmr2 may NOT = mmrw
00054 #define V_PMINUB_MMXT(mmr1, mmr2, mmrw) \
00055     "pcmpeqb "mmrw", "mmrw"\n\t"       \
00056     "psubusb "mmr2", "mmrw"\n\t"       \
00057     "paddusb "mmrw", "mmr1"\n\t"       \
00058     "psubusb "mmrw", "mmr1"\n\t"
00059 #define V_PMINUB_SSE(mmr1, mmr2, mmrw)      "pminub "mmr2", "mmr1"\n\t"
00060 #define V_PMINUB_3DNOW(mmr1, mmr2, mmrw)    V_PMINUB_MMXT(mmr1, mmr2, mmrw)  // use MMX version
00061 #define V_PMINUB(mmr1, mmr2, mmrw)          V_PMINUB2(mmr1, mmr2, mmrw, SSE_TYPE) 
00062 #define V_PMINUB2(mmr1, mmr2, mmrw, ssetyp) V_PMINUB3(mmr1, mmr2, mmrw, ssetyp) 
00063 #define V_PMINUB3(mmr1, mmr2, mmrw, ssetyp) V_PMINUB_##ssetyp(mmr1, mmr2, mmrw) 
00064 
00065 // some macros for movntq instruction
00066 //      V_MOVNTQ(mmr1, mmr2) 
00067 #define V_MOVNTQ_MMXT(mmr1, mmr2)      "movq   "mmr2", "mmr1"\n\t"
00068 #define V_MOVNTQ_3DNOW(mmr1, mmr2)    "movq   "mmr2", "mmr1"\n\t"
00069 #define V_MOVNTQ_SSE(mmr1, mmr2)      "movntq "mmr2", "mmr1"\n\t"
00070 #define V_MOVNTQ(mmr1, mmr2)          V_MOVNTQ2(mmr1, mmr2, SSE_TYPE) 
00071 #define V_MOVNTQ2(mmr1, mmr2, ssetyp) V_MOVNTQ3(mmr1, mmr2, ssetyp) 
00072 #define V_MOVNTQ3(mmr1, mmr2, ssetyp) V_MOVNTQ_##ssetyp(mmr1, mmr2)
00073 
00074 // end of macros