iCE40/yosys - clone of https://github.com/YosysHQ/yosys

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Diffstat (limited to 'passes/techmap/aigmap.cc')

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/* ChibiOS - Copyright (C) 2015 Michael D. Spradling Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ /** * @file crcsw.c * @brief CRC software driver. @note SW implementation was based from: * @note http://www.barrgroup.com/Embedded-Systems/How-To/CRC-Calculation-C-Code * * @addtogroup CRC * @{ */ #include "hal.h" #if HAL_USE_CRC || defined(__DOXYGEN__) #if CRCSW_USE_CRC1 || defined(__DOXYGEN__) /*===========================================================================*/ /* Driver local definitions. */ /*===========================================================================*/ /** * @brief CRC default configuration. */ #if CRCSW_CRC32_TABLE == TRUE || defined(__DOXYGEN__) static const uint32_t crc32_table[256] = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d }; #endif #if CRCSW_CRC16_TABLE || defined(__DOXYGEN__) static const uint32_t crc16_table[256] = { 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 }; #endif /*===========================================================================*/ /* Driver exported variables. */ /*===========================================================================*/ /** @brief CRC1 driver identifier.*/ #if CRCSW_USE_CRC1 || defined(__DOXYGEN__) CRCDriver CRCD1; #endif #if CRCSW_CRC32_TABLE || defined(__DOXYGEN__) const CRCConfig crcsw_crc32_config = { .poly_size = 32, .poly = 0x04C11DB7, .initial_val = 0xFFFFFFFF, .final_val = 0xFFFFFFFF, .reflect_data = 1, .reflect_remainder = 1, .table = crc32_table }; #endif #if CRCSW_CRC16_TABLE || defined(__DOXYGEN__) const CRCConfig crcsw_crc16_config = { .poly_size = 16, .poly = 0x8005, .initial_val = 0x0, .final_val = 0x0, .reflect_data = 1, .reflect_remainder = 1, .table = crc16_table }; #endif /*===========================================================================*/ /* Driver local variables and types. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver local functions. */ /*===========================================================================*/ #if (CRCSW_PROGRAMMABLE == TRUE) static uint32_t reflect(uint32_t data, uint8_t nBits) { uint32_t reflection = 0x00000000; uint8_t bit; /* Reflect the data about the center bit. */ for (bit = 0; bit < nBits; ++bit) { /* If the LSB bit is set, set the reflection of it. */ if (data & 0x01) { reflection |= (1 << ((nBits - 1) - bit)); } data = (data >> 1); } return reflection; } #endif /*===========================================================================*/ /* Driver interrupt handlers. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver exported functions. */ /*===========================================================================*/ /** * @brief Low level CRC software initialization. * * @notapi */ void crc_lld_init(void) { crcObjectInit(&CRCD1); CRCD1.crc = CRCD1.config->initial_val; } /** * @brief Configures and activates the CRC peripheral. * * @param[in] crcp pointer to the @p CRCDriver object * * @notapi */ void crc_lld_start(CRCDriver *crcp) { osalDbgAssert(crcp->config != NULL, "config must not be NULL"); #if CRCSW_PROGRAMMABLE == FALSE #if CRCSW_CRC32_TABLE == TRUE && CRCSW_CRC16_TABLE == TRUE osalDbgAssert((crcp->config == CRCSW_CRC32_TABLE_CONFIG) || (crcp->config == CRCSW_CRC16_TABLE_CONFIG), "config must be CRCSW_CRC32_TABLE_CONFIG or CRCSW_CRC16_TABLE_CONFIG"); #elif CRCSW_CRC32_TABLE == TRUE && CRCSW_CRC16_TABLE == FALSE osalDbgAssert(crcp->config == CRCSW_CRC32_TABLE_CONFIG, "config must be CRCSW_CRC32_TABLE_CONFIG"); #else osalDbgAssert(crcp->config == CRCSW_CRC16_TABLE_CONFIG, "config must be CRCSW_CRC16_TABLE_CONFIG"); #endif #endif crc_lld_reset(crcp); } /** * @brief Deactivates the CRC peripheral. * * @param[in] crcp pointer to the @p CRCDriver object * * @notapi */ void crc_lld_stop(CRCDriver *crcp) { (void)crcp; } /** * @brief Resets current CRC calculation. * * @param[in] crcp pointer to the @p CRCDriver object * * @notapi */ void crc_lld_reset(CRCDriver *crcp) { crcp->crc = crcp->config->initial_val; } /** * @brief Returns calculated CRC from last reset * * @param[in] crcp pointer to the @p CRCDriver object * @param[in] n size of buf in bytes * @param[in] buf @p buffer location * * @notapi */ uint32_t crc_lld_calc(CRCDriver *crcp, size_t n, const void *buf) { uint32_t i; uint32_t crc; #if (CRCSW_CRC32_TABLE == TRUE) || (CRCSW_CRC16_TABLE == TRUE) if (crcp->config->table != NULL) { for (i = 0; i < n; i++) { uint8_t data = *((uint8_t*)buf + i); uint8_t idx = (crcp->crc ^ data); crcp->crc = (crcp->config->table[idx] ^ (crcp->crc >> 8)); } crc = crcp->crc; } #endif #if (CRCSW_PROGRAMMABLE == TRUE) // Mask off bits to poly size uint32_t mask = 1 << (crcp->config->poly_size - 1); mask |= (mask - 1); crc = crcp->crc; if (crcp->config->table == NULL) { for (i = 0; i < n; i++) { uint8_t data = *((uint8_t*)buf + i); uint8_t bit; if (crcp->config->reflect_data) { data = reflect(data, 8); } /* Bring the next byte into the remainder. */ crc ^= (data << (crcp->config->poly_size - 8)); /* Perform modulo-2 division, a bit at a time. */ for (bit = 8; bit > 0; --bit) { /* Try to divide the current data bit. */ if (crc & (1 << (crcp->config->poly_size - 1))) { crc = (crc << 1) ^ crcp->config->poly; } else { crc <<= 1; } } } crcp->crc = crc; if (crcp->config->reflect_remainder) { crc = reflect(crc, crcp->config->poly_size); } } #endif return (crc ^ crcp->config->final_val) & mask; } #endif /* CRCSW_USE_CRC1 */ #endif /* HAL_USE_CRC */


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