初始化版本

2026-02-09 10:27:21 +08:00
commit 64d767932f
4467 changed files with 2486822 additions and 0 deletions
--- a/rt-thread/libcpu/risc-v/common/cpuport.h
+++ b/rt-thread/libcpu/risc-v/common/cpuport.h
@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-10-03     Bernard      The first version
+ * 2020/11/20     BalanceTWK   Add FPU support
+ */
+
+#ifndef CPUPORT_H__
+#define CPUPORT_H__
+
+#include <rtconfig.h>
+
+/* bytes of register width  */
+#ifdef ARCH_CPU_64BIT
+#define STORE                   sd
+#define LOAD                    ld
+#define REGBYTES                8
+#else
+#define STORE                   sw
+#define LOAD                    lw
+#define REGBYTES                4
+#endif
+
+#ifdef ARCH_RISCV_FPU
+#ifdef ARCH_RISCV_FPU_D
+#define FSTORE                  fsd
+#define FLOAD                   fld
+#define FREGBYTES               8
+#define rv_floatreg_t           rt_int64_t
+#endif
+#ifdef ARCH_RISCV_FPU_S
+#define FSTORE                  fsw
+#define FLOAD                   flw
+#define FREGBYTES               4
+#define rv_floatreg_t           rt_int32_t
+#endif
+#endif
+
+#endif