From 53a59a5f614ee495484845990d4239233e3807e7 Mon Sep 17 00:00:00 2001
From: fengbh <1953356163@qq.com>
Date: Mon, 9 Dec 2024 16:00:37 +0800
Subject: [PATCH] add me241102_vpi

---
 .gitignore                | 14 +++++++++++++-
 me241102_vpi/Makefile     | 18 ++++++++++++++++++
 me241102_vpi/ReadMe.md    | 31 +++++++++++++++++++++++++++++++
 me241102_vpi/func.c       | 30 ++++++++++++++++++++++++++++++
 me241102_vpi/func.tab     |  1 +
 me241102_vpi/testbench.sv |  5 +++++
 6 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 me241102_vpi/Makefile
 create mode 100644 me241102_vpi/ReadMe.md
 create mode 100644 me241102_vpi/func.c
 create mode 100644 me241102_vpi/func.tab
 create mode 100644 me241102_vpi/testbench.sv

diff --git a/.gitignore b/.gitignore
index 6fbfca7..6f0df8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,4 +25,16 @@ me241101_dpi/ucli.key
 me241101_dpi/vc_hdrs.h
 me241101_dpi/wave.fsdb
 me241101_dpi/*.o
-me241101_dpi/*.so
\ No newline at end of file
+me241101_dpi/*.so
+
+me241102_vpi/csrc/
+me241102_vpi/simv.daidir/
+me241102_vpi/verdiLog/
+me241102_vpi/*.log
+me241102_vpi/novas.*
+me241102_vpi/simv
+me241102_vpi/ucli.key
+me241102_vpi/vc_hdrs.h
+me241102_vpi/wave.fsdb
+me241102_vpi/*.o
+me241102_vpi/*.so
\ No newline at end of file
diff --git a/me241102_vpi/Makefile b/me241102_vpi/Makefile
new file mode 100644
index 0000000..6a982f2
--- /dev/null
+++ b/me241102_vpi/Makefile
@@ -0,0 +1,18 @@
+comp_c:
+	- gcc -fPIC -shared -o libfunc.so func.c -I ${VCS_HOME}/include
+comp:
+	- vcs -full64 +v2k -sverilog -LDFLAGS -Wl,--no-as-needed \
+		-P ${VERDI_HOME}/share/PLI/VCS/LINUX64/novas.tab ${VERDI_HOME}/share/PLI/VCS/LINUX64/pli.a \
+		-P ./func.tab \
+		+vcs+fsdbon -debug_access+all \
+		-top testbench -l compile.log -timescale=1ns/1ps\
+		testbench.sv
+
+sim:
+	- ./simv -l sim.log +fsdbfile+wave.fsdb +fsdb+no_msg+Flush +fsdb+delta +fsdb+sva_sucess +fsdb+glitch=0 +fsdb+sequential -load ./libfunc.so
+
+verdi:
+	- verdi -sverilog +v2k testbench.sv -ssf wave.fsdb -sswr signal.rc &
+
+clean:
+	- \rm -rf *.log *.fsdb simv.daidir
diff --git a/me241102_vpi/ReadMe.md b/me241102_vpi/ReadMe.md
new file mode 100644
index 0000000..8e96101
--- /dev/null
+++ b/me241102_vpi/ReadMe.md
@@ -0,0 +1,31 @@
+# vpi
+
+## 概述
+
+使用vcs编译vpi的简单例子
+
+> 需要准备好vcs+verdi的仿真环境。
+
+### 特性
+
+- 动态调用
+- Makefile 管理
+
+## 快速开始
+
+### 一、仿真
+
+```bash
+make clean comp_c comp sim
+```
+
+### 二、检查log
+
+查看log，检查是否正确调用vpi。
+
+## 更多
+
+[PLI 学习 - 博涵 - 博客园](https://www.cnblogs.com/fengbohan/p/18595069/pli-learning-zx6kpe)
+
+
+
diff --git a/me241102_vpi/func.c b/me241102_vpi/func.c
new file mode 100644
index 0000000..435b9e6
--- /dev/null
+++ b/me241102_vpi/func.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <vpi_user.h>
+
+void get_arg(PLI_BYTE8 *user_data)
+{
+    // 变量定义
+    s_vpi_value value_s;
+    vpiHandle systf_handle, arg_iter, arg_handle;
+
+    // 获取函数调用的句柄
+    systf_handle = vpi_handle(vpiSysTfCall, NULL);
+    // 从句柄中获取参数迭代器
+    arg_iter = vpi_iterate(vpiArgument, systf_handle);
+    if(arg_iter == NULL){
+    	vpi_printf("ERROR: failed to obtain systf arg handles\n");
+    	vpi_control(vpiFinish, 1);  /* abort simulation */
+    	return;
+    }
+
+    // 迭代获取第一个参数
+    arg_handle = vpi_scan(arg_iter);
+    value_s.format = vpiStringVal;
+    vpi_get_value(arg_handle, &value_s);
+    PLI_BYTE8 *arg1 = value_s.value.str;
+
+    // 释放迭代器
+    vpi_free_object(arg_iter); /* because not scanning until null */
+
+    vpi_printf("arg[1] = %s", arg1);
+}
\ No newline at end of file
diff --git a/me241102_vpi/func.tab b/me241102_vpi/func.tab
new file mode 100644
index 0000000..0309ae5
--- /dev/null
+++ b/me241102_vpi/func.tab
@@ -0,0 +1 @@
+$get_arg call=get_arg
\ No newline at end of file
diff --git a/me241102_vpi/testbench.sv b/me241102_vpi/testbench.sv
new file mode 100644
index 0000000..b93e3e8
--- /dev/null
+++ b/me241102_vpi/testbench.sv
@@ -0,0 +1,5 @@
+module testbench;
+    initial begin
+        $get_arg("Hello world");
+    end
+endmodule
\ No newline at end of file