Create the CSRs.h for CSR

Author: f74064054@mail.ncku.edu.tw

CSRs.h

@@ -0,0 +1,91 @@
+/* Modified by Nober <s0913768710@gmail.com>
+    13-DEC-2019 - Define all CSR macro
+*/
+
+/*
+RISCV emulator for the RV32I architecture
+based on TinyEMU by Fabrice Bellard, see https://bellard.org/tinyemu/
+stripped down for RV32I only, all "gotos" removed, and fixed some bugs for the compliance test
+by Frank Buss, 2018
+
+Requires libelf-dev:
+
+sudo apt-get install libelf-dev
+
+
+Compile it like this:
+
+gcc -O3 -Wall -lelf emu-rv32i.c -o emu-rv32i
+
+
+It is compatible to Spike for the command line arguments, which means you can run
+the compliance test from https://github.com/riscv/riscv-compliance like this:
+
+make RISCV_TARGET=spike RISCV_DEVICE=rv32i TARGET_SIM=/full/path/emulator variant
+
+It is also compatible with qemu32, as it is used for Zephyr. You can compile the
+Zephyr examples for qemu like this:
+
+cd zephyr
+source zephyr-env.sh
+cd samples/synchronization
+mkdir build && cd build
+cmake -GNinja -DBOARD=qemu_riscv32 ..
+ninja
+
+After this you can run it with the emulator like this:
+
+emu-rv32i zephyr/zephyr.elf
+
+
+original copyright:
+*/
+
+
+
+/*
+ * RISCV emulator
+ *
+ * Copyright (c) 2016 Fabrice Bellard
+ *
+ * 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 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 <stdint.h>
+
+
+// ====================================================== //
+// =================== User Trap Setup ================== //
+// ====================================================== //
+uint32_t ustatus;           /* User status register  */
+uint32_t uie;               /* User interrupt-enable register */
+uint32_t utvec;             /* User trap handler base address */
+// ====================================================== //
+// ================= User Trap Handling ================= //
+// ====================================================== //
+uint32_t uscratch;           /* Scratch register for user trap handlers*/
+uint32_t uepc;               /* User exception program counter */
+uint32_t ucause;             /* User trap cause*/
+uint32_t ubadaddr;           /* User bad address */
+uint32_t uip;                /* User interrupt pending */
+// ====================================================== //
+// ============== User Floating-Point CSRs ============== //
+// ====================================================== //
+uint32_t fflags;             /* Floating-Point Accrued Exceptions*/
+uint32_t frm;                /* Floating-Point Dynamic Rounding Mode*/