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Diffstat (limited to 'nvkm/subdev/pwr/fuc/arith.fuc')
| -rw-r--r-- | nvkm/subdev/pwr/fuc/arith.fuc | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/nvkm/subdev/pwr/fuc/arith.fuc b/nvkm/subdev/pwr/fuc/arith.fuc deleted file mode 100644 index 214a6d9e0..000000000 --- a/nvkm/subdev/pwr/fuc/arith.fuc +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Copyright 2014 Martin Peres <martin.peres@free.fr> - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the folloing conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: Martin Peres - */ - -/****************************************************************************** - * arith data segment - *****************************************************************************/ -#ifdef INCLUDE_PROC -#endif - -#ifdef INCLUDE_DATA -#endif - -/****************************************************************************** - * arith code segment - *****************************************************************************/ -#ifdef INCLUDE_CODE - -// does a 32x32 -> 64 multiplication -// -// A * B = A_lo * B_lo -// + ( A_hi * B_lo ) << 16 -// + ( A_lo * B_hi ) << 16 -// + ( A_hi * B_hi ) << 32 -// -// $r15 - current -// $r14 - A -// $r13 - B -// $r12 - mul_lo (return) -// $r11 - mul_hi (return) -// $r0 - zero -mulu32_32_64: - push $r1 // A_hi - push $r2 // B_hi - push $r3 // tmp0 - push $r4 // tmp1 - - shr b32 $r1 $r14 16 - shr b32 $r2 $r13 16 - - clear b32 $r12 - clear b32 $r11 - - // A_lo * B_lo - mulu $r12 $r14 $r13 - - // ( A_hi * B_lo ) << 16 - mulu $r3 $r1 $r13 // tmp0 = A_hi * B_lo - mov b32 $r4 $r3 - and $r3 0xffff // tmp0 = tmp0_lo - shl b32 $r3 16 - shr b32 $r4 16 // tmp1 = tmp0_hi - add b32 $r12 $r3 - adc b32 $r11 $r4 - - // ( A_lo * B_hi ) << 16 - mulu $r3 $r14 $r2 // tmp0 = A_lo * B_hi - mov b32 $r4 $r3 - and $r3 0xffff // tmp0 = tmp0_lo - shl b32 $r3 16 - shr b32 $r4 16 // tmp1 = tmp0_hi - add b32 $r12 $r3 - adc b32 $r11 $r4 - - // ( A_hi * B_hi ) << 32 - mulu $r3 $r1 $r2 // tmp0 = A_hi * B_hi - add b32 $r11 $r3 - - pop $r4 - pop $r3 - pop $r2 - pop $r1 - ret -#endif |