diff options
Diffstat (limited to 'hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c')
-rw-r--r-- | hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c new file mode 100644 index 00000000..290ca9dd --- /dev/null +++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c @@ -0,0 +1,75 @@ +/******************************************************************************* +* Copyright (C) 2018 Cadence Design Systems, Inc. +* +* Permission is hereby granted, free of charge, to any person obtaining +* a copy of this software and associated documentation files (the +* "Software"), to use this Software with Cadence processor cores only and +* not with any other processors and platforms, subject to +* the following 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 AUTHORS OR COPYRIGHT HOLDERS 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. + +******************************************************************************/ + +#include "dsp_comm.h" + +void dsp_memcpy(void *d, void *s, unsigned int size) +{ + unsigned char *dest = (unsigned char*)d; + unsigned char *src = (unsigned char*)s; + + if (s == d) { + return; + } else if (src > dest) { + for (; dest < ((unsigned char*)d + size); dest++) { + *dest = *src; + src++; + } + } else { + src = src + (size - 1); + for (dest = dest + (size - 1); dest >= (unsigned char*)d; dest--) { + *dest = *src; + src--; + } + } +} + + +void dsp_memset(void *d, unsigned char ucData, unsigned int size) +{ + unsigned int i; + unsigned char *dest = (unsigned char*)d; + + for(i = 0; i < size; i++) + *dest++ = ucData; +} +int division(int a, int b) +{ + const int bits_in_word_m1 = (int)(sizeof(int) * 8) - 1; + int s_a = a >> bits_in_word_m1; /* s_a = a < 0 ? -1 : 0 */ + int s_b = b >> bits_in_word_m1; /* s_b = b < 0 ? -1 : 0 */ + a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ + b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ + s_a ^= s_b; /* sign of quotient */ + /* + * On CPUs without unsigned hardware division support, + * this calls __udivsi3 (notice the cast to su_int). + * On CPUs with unsigned hardware division support, + * this uses the unsigned division instruction. + */ + return ((int)a/(int)b ^ s_a) - s_a; /* negate if s_a == -1 */ + +} + + + + |