Lup Yuen Lee 李立源 @lupyuen@social.cleverlibre.org
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.codeberg.page
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
"#Amazon and iRobot mutually agreed to call off their planned Acquisition"
Why is TCC #RISCV Compiler hitting "Unknown Relocation Type 60"? 🤔
Source: https://github.com/lupyuen/tcc-riscv32-wasm#fix-missing-printf-in-nuttx-app
"The Rigor of Angels: Borges, Heisenberg, Kant, and the Ultimate Nature of Reality" by William Egginton
Inside the Memory Management Unit of #Ox64 BL808 SBC ... And how it controls Strong Ordering
Article: https://lupyuen.codeberg.page/articles/plic3.html#memory-management-unit
Lup Yuen Lee 李立源
boosted
@lupyuen I don't know if this can help, but "li" assembly mnemonic is a pseudocode that can be converted to several real RISC-V mnemonics, including addi rd,x0,imm. on the other side, gnu objdump and gdb (that use objdump to disassemble) disassemble addi rd,x0,imm as li rd,imm by default:
objdump -d <binary>
To display real instruction, the option -M no-aliases is needed:
objdump -d -M no-aliases <binary>
on a x86_64/armv8 etc...:
riscv64-elf-objdump -d -M no-aliases <binary>
or
riscv32-elf-objdump -d -M no-aliases <binary>
Depending on target binary. Sadly, didn't found this option in gdb disassemble command.
TCC Compiler Output (from #WebAssembly) prints "Hello World" in Apache #NuttX RTOS! 🎉 ... But needs painful #RISCV Assembly 🤔
Source: https://github.com/lupyuen/tcc-riscv32-wasm#ecall-for-nuttx-system-call
Here's how Apache #NuttX RTOS links a NuttX App
Source: https://github.com/lupyuen/tcc-riscv32-wasm#how-nuttx-build-links-a-nuttx-app
TCC Compiler in WebAssembly has generated a #RISCV ELF ... Let's run it on Apache #NuttX RTOS!
Source: https://github.com/lupyuen/tcc-riscv32-wasm#test-tcc-output-with-nuttx
"Netflix does not plan to develop a Vision Pro app at this time because the device is 'so subscale' that it is 'not really particularly relevant' to most Netflix members"
https://www.macrumors.com/2024/01/26/netflix-vision-pro-not-relevant/
Implementing printf() in #ZigLang with Pattern Matching ... So TCC Compiler will run in #WebAssembly 🤔
Source: https://github.com/lupyuen/tcc-riscv32-wasm#fix-the-varargs-functions
#RISCV T-Head C906 Errata in Linux Kernel ... Says that we need Strong Ordering for I/O Memory in #Ox64 BL808 SBC
Article: https://lupyuen.codeberg.page/articles/plic3.html#t-head-errata
Lup Yuen Lee 李立源
boosted
@lupyuen i wanna port r2 to nuttx, could be fun to learn from this system. Is there any guide to crosscompile posix programs for it? Whats the essiest way to get an emulated system running with your code in it?
Barebones TCC #RISCV Compiler in #WebAssembly 🎉
#Ox64 BL808 UART Controller has Leaky Reads and Writes ... But there's a simple fix!
Article: https://lupyuen.codeberg.page/articles/plic3.html#leaky-reads-in-uart
TCC #RISCV Compiler, compiled to #WebAssembly by #ZigLang Compiler ... Generates correct ELF Code! 🎉
Source: https://github.com/lupyuen/tcc-riscv32-wasm#tcc-webassembly-runs-ok-in-a-web-browser
Lup Yuen Lee 李立源
boosted
@lupyuen and this only applies to iPhones.
https://9to5mac.com/2024/01/26/ios-17-app-stores-and-more-ipad-changes/
"Some of these changes are coming to all of Apple’s platforms, while others are coming only to the iPhone and not the iPad.
There is reason for this nuance. Apple explains that the European Union ruled that iOS is a gatekeeper platform as part of the Digital Markets Act. This applies only to iOS on the iPhone. iPadOS on the iPad is a completely different platform in the eyes of Apple and the European Commission."
Lup Yuen Lee 李立源
boosted
EU industry chief Thierry Breton : "As from 7 March we will assess companies’ proposals, with the feedback of third parties.”
He added: “If the proposed solutions are not good enough, we will not hesitate to take strong action.”
Running TCC #RISCV Compiler inside the Web Browser ... Thanks to #ZigLang Compiler 👍
Source: https://github.com/lupyuen/tcc-riscv32-wasm#test-the-tcc-webassembly-in-a-web-browser
Strange problems in #Ox64 BL808 UART and Interrupt Controller ... Let's investigate the alligator in the vest
Article: https://lupyuen.codeberg.page/articles/plic3.html#uart-and-plic-troubles
foundation-libc: libc in #ZigLang for Freestanding targets
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.codeberg.page
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
