| /* |
| * Copyright (c) 2021 Loongson Technology Corporation Limited |
| * Contributed by Jin Bo <jinbo@loongson.cn> |
| * Contributed by Lu Wang <wanglu@loongson.cn> |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "./vpx_config.h" |
| #include "vpx_ports/loongarch.h" |
| |
| #define LOONGARCH_CFG2 0x02 |
| #define LOONGARCH_CFG2_LSX (1 << 6) |
| #define LOONGARCH_CFG2_LASX (1 << 7) |
| |
| #if CONFIG_RUNTIME_CPU_DETECT |
| #if defined(__loongarch__) && defined(__linux__) |
| int loongarch_cpu_caps(void) { |
| int reg = 0; |
| int flag = 0; |
| |
| __asm__ volatile("cpucfg %0, %1 \n\t" : "+&r"(reg) : "r"(LOONGARCH_CFG2)); |
| if (reg & LOONGARCH_CFG2_LSX) flag |= HAS_LSX; |
| |
| if (reg & LOONGARCH_CFG2_LASX) flag |= HAS_LASX; |
| |
| return flag; |
| } |
| #else /* end __loongarch__ && __linux__ */ |
| #error \ |
| "--enable-runtime-cpu-detect selected, but no CPU detection method " \ |
| "available for your platform. Reconfigure with --disable-runtime-cpu-detect." |
| #endif |
| #else /* end CONFIG_RUNTIME_CPU_DETECT */ |
| int loongarch_cpu_caps(void) { return 0; } |
| #endif |
