arvin chou arvin-chou

Importing Python source code from a script without the .py extension

Generally, to import a python module programatically when you know the file's path, you could do something like this:

import importlib.util
import sys

Step 1. Lower axpy.mlir to axpy.ll

mlir-opt -lower-affine -convert-loop-to-std -convert-std-to-llvm='emit-c-wrappers=1' axpy.mlir | mlir-translate --mlir-to-llvmir -o axpy.ll

Step 2. Get bitcode for the caller C.

clang -emit-llvm call_axpy.c -S -o call_axpy.bc

# 使用 Homebrew 安装 aria2
brew install aria2

# 创建配置文件aria2.conf和空对话文件aria2.session
mkdir ~/.aria2 && cd ~/.aria2
touch aria2.conf

写在前面

现在很多人都有魔法上网手段，常用的魔法上网工具有 SSR 和 V2rayN 两种。

这两种工具已经相当强大，能够使我们坐地日行八万里，访问我们喜爱的网站。

但是这两种工具也有美中不足之处：似乎它们只支持浏览器访问网页时走代理，

而对于除了浏览器以外的应用程序，就并没有通过代理，导致一些被墙的软件不能很好地使用。

spike 是 risc-v 的模擬器，讓 risc-v 的指令可以跑在任意的機器上，而不需要處理器有支援。本文主要在於紀錄如何在spike原有的基礎上，加上新的指令，以及如何測試新的指令。

大致上的 spike 流程為

c source code -> riscv-gcc -> riscv object code -> spike -> pk -> run on cpu

	ESD to ISO on macOS
	https://gist.github.com/b0gdanw/e36ea84828dbd19e03eff6158f1fc77c
	Converting ESD files to ISO images on macOS
	- download Parallels Desktop 18 for Mac Image from https://www.parallels.com/products/desktop/download/
	- at the moment https://download.parallels.com/desktop/v18/18.2.0-53488/ParallelsDesktop-18.2.0-53488.dmg

	- open/mount the dmg
	- copy prl_esd2iso and libwimlib.1.dylib from /Volumes/Parallels\ Desktop\ 18/Parallels\ Desktop.app/Contents/ to /usr/local/bin/ and /usr/local/lib/

	sudo ditto /Volumes/Parallels\ Desktop\ 18/Parallels\ Desktop.app/Contents/MacOS/prl_esd2iso /usr/local/bin/prl_esd2iso

	#########################
	# ON SERVER #
	#########################

	# install openssh-server
	sudo apt install openssh-server

	# start openssh-server
	sudo service ssh start

	# BetterTouchTool reset trial time
	# ** All preference will reset

	echo "remove ~/Library/Preferences/com.hegenberg.BetterTouchTool.plist"
	rm -rf ~/Library/Preferences/com.hegenberg.BetterTouchTool.plist
	echo "Done"

	echo "remove ~/Library/Application\ Support/BetterTouchTool/"
	rm -rf ~/Library/Application\ Support/BetterTouchTool/
	echo "Done"