Swift-RISCV-Emulator
所属分类：处理器开发
开发工具：Swift
文件大小：0KB
下载次数：0
上传日期：2023-06-19 23:40:09
上 传 者：
sh-1993
说明： Swift RISCV模拟器，
(A Swift RISCV Emulator,)
文件列表:
Documentation/ (0, 2023-06-19)
Documentation/Screen Recording 2023-06-19 at 16.30.09.mov (3300688, 2023-06-19)
Documentation/Screenshot 2023-06-19 at 16.30.15.png (530800, 2023-06-19)
LICENSE (1501, 2023-06-19)
RISCV/ (0, 2023-06-19)
RISCV/Package.resolved (298, 2023-06-19)
RISCV/Package.swift (672, 2023-06-19)
RISCV/Sources/ (0, 2023-06-19)
RISCV/Sources/RISCV/ (0, 2023-06-19)
RISCV/Sources/RISCV/Assembler.swift (4113, 2023-06-19)
RISCV/Sources/RISCV/Examples.swift (3365, 2023-06-19)
RISCV/Sources/RISCV/InstructionSet.swift (6700, 2023-06-19)
RISCV/Sources/RISCV/Memory.swift (5069, 2023-06-19)
RISCV/Sources/RISCV/Processor.swift (3857, 2023-06-19)
RISCV/Sources/RISCV/RV32I+Formats.swift (6038, 2023-06-19)
RISCV/Sources/RISCV/RV32I+Instructions.swift (10490, 2023-06-19)
RISCV/Sources/RISCV/Register.swift (2133, 2023-06-19)
RISCV/Tests/ (0, 2023-06-19)
RISCV/Tests/RISCVTests/ (0, 2023-06-19)
RISCV/Tests/RISCVTests/RISCVTests.swift (353, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/ (0, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.pbxproj (17706, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.xcworkspace/ (0, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.xcworkspace/contents.xcworkspacedata (135, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.xcworkspace/xcshareddata/ (0, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist (238, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/ (0, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved (569, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/xcshareddata/ (0, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/xcshareddata/xcschemes/ (0, 2023-06-19)
Swift-RISCV-Emulator.xcodeproj/xcshareddata/xcschemes/Swift-RISV-Emulator.xcscheme (2959, 2023-06-19)
Swift-RISCV-Emulator/ (0, 2023-06-19)
Swift-RISCV-Emulator/Assets.xcassets/ (0, 2023-06-19)
Swift-RISCV-Emulator/Assets.xcassets/AccentColor.colorset/ (0, 2023-06-19)
Swift-RISCV-Emulator/Assets.xcassets/AccentColor.colorset/Contents.json (123, 2023-06-19)
Swift-RISCV-Emulator/Assets.xcassets/AppIcon.appiconset/ (0, 2023-06-19)
Swift-RISCV-Emulator/Assets.xcassets/AppIcon.appiconset/Contents.json (999, 2023-06-19)
... ...
# Swift-RISCV-Emulator
## What the heck is this?
It's a Swift RISCV Emulator!
[Demo](https://github.com/schwa/Swift-RISCV-Emulator/blob/master/)
## Does it work?
"Sure"
## No really, does it work?
"Suure"
## How much of RISC-V does it emulate?
RV32I: 32-bit Integer Instructions. So not very much. And maybe not all of RV32I - I forgot (this code is kinda old)
## Is it "correct"?
Buggered if I know. I haven't tried comparing it to a real emulator. Let's go with no.
## Is it "fast"?
It's not what you would call fast. The SwiftUI gui slows it down quite a bit and running headless speeds it up considerably. But it's not fast regardless. I wrote the code to be instructional.
## What's it doing?
The sample project prints(*) "hello world" to the ECALL system call instruction. (* And by print, I mean not actually printing because ECALL isn't hooked up).
```asm
LUI x1 \(globalsAddress) ; load address of "hello world" into x1 upper
ADDI x1 x1 \(globalsAddress) ; load address of "hello world" into x1 lower
; start of loop
LBU x2 x1 0 ; load byte at address x1
BEQ x2 x0 8 ; exit loop if x2 is nil byte
ECALL ; system call
ADDI x1 x1 1 ; increment x1
JAL x0 -8 ; jump to start of loop
JAL x0 -14 ; jump to start
;JALR x0 x0 0 ; Force an illegal instruction to bail
```
## Why?
Because I found RISCV interesting, and I wanted to play with it.
## Why are you releasing this?
Because it's kinda fun and it is rather old code I couldn't release it before because of employer restrictions. And someone might find it vaguely interesting/entertaining.
## Is there an assembler?
There is but it's not great. But it assemblies the hello world program. What more do you want?
## Are you going to do more with it?
Probably not. Hey, look! A squirrel!
## What license is this?
BSD 3-Clause License as god intended.
## Where can I find out more about RISCV?
Really?
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