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author | wdenk <wdenk> | 2003-10-08 23:26:14 +0000 |
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committer | wdenk <wdenk> | 2003-10-08 23:26:14 +0000 |
commit | 4a5517094dd30bb1f271403b62e23053301668e6 (patch) | |
tree | 55bd5e64828e7645caa5506302e27715cfecdbda /lib_nios/mult.c | |
parent | 54387ac931fa7cc92cd45c53798379af1f9adc44 (diff) | |
download | bootable_bootloader_goldelico_gta04-4a5517094dd30bb1f271403b62e23053301668e6.zip bootable_bootloader_goldelico_gta04-4a5517094dd30bb1f271403b62e23053301668e6.tar.gz bootable_bootloader_goldelico_gta04-4a5517094dd30bb1f271403b62e23053301668e6.tar.bz2 |
* Patch by Scott McNutt, 04 Oct 2003:
- add support for Altera Nios-32 CPU
- add support for Nios Cyclone Development Kit (DK-1C20)
* Patch by Steven Scholz, 29 Sep 2003:
- A second parameter for bootm overwrites the load address for
"Standalone Application" images.
- bootm sets environment variable "filesize" to the resulting
(uncompressed) data length for "Standalone Application" images
when autostart is set to "no". Now you can do something like
if bootm $fpgadata $some_free_ram ; then
fpga load 0 $some_free_ram $filesize
fi
* Patch by Denis Peter, 25 Sept 2003:
add support for the MIP405 Rev. C board
Diffstat (limited to 'lib_nios/mult.c')
-rw-r--r-- | lib_nios/mult.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib_nios/mult.c b/lib_nios/mult.c new file mode 100644 index 0000000..66bb64d --- /dev/null +++ b/lib_nios/mult.c @@ -0,0 +1,56 @@ +/* + * This file is part of GNU CC. + * + * GNU CC 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, or (at your + * option) any later version. + * + * GNU CC is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with GNU CC; see the file COPYING. If not, write + * to the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#include <common.h> + +#if !defined(CFG_NIOS_MULT_HW) && !defined(CFG_NIOS_MULT_MSTEP) + +#include "math.h" + +USItype __mulsi3 (USItype a, USItype b) +{ + USItype c = 0; + + while (a != 0) { + if (a & 1) + c += b; + a >>= 1; + b <<= 1; + } + + return c; +} + + +UHItype __mulhi3 (UHItype a, UHItype b) +{ + UHItype c = 0; + + while (a != 0) { + if (a & 1) + c += b; + a >>= 1; + b <<= 1; + } + + return c; +} + +#endif /*!defined(CFG_NIOS_MULT_HW) && !defined(CFG_NIOS_MULT_MSTEP) */ |