asm volatile nop
這段inline assembly 不包含任何code，只是告訴compiler memory 有可能會被修改。 一般為了好看，建議將一堆assembly 寫成這樣：. asm volatile(, The connection between registers and C operands is specified in the second and third part of the asm instruction, the list of input and output ...
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 asm volatile nop 相關參考資料
Adding asm volatile("nopnt"::); makes the code run *faster* than ...
I read that adding nop op-codes lets you set delays down to the 1/clock frequency level. Part of my code has a for loop with asm volatile("nop-n-t"::); being the ... https://www.reddit.com arm inline asm 語法@ 立你斯學習記錄:: 痞客邦::
這段inline assembly 不包含任何code，只是告訴compiler memory 有可能會被修改。 一般為了好看，建議將一堆assembly 寫成這樣：. asm volatile( https://b8807053.pixnet.net asm volatile()所表示的意思_pointfish的专栏-CSDN博客
The connection between registers and C operands is specified in the second and third part of the asm instruction, the list of input and output ... https://blog.csdn.net c - Is `__asm nop` the Windows equivalent of `asm volatile ...
So, no, nothing similar to volatile() is required, it can't disappear. Plain __asm nop } will always survive unscathed and is equivalent to the GCC assembly. https://stackoverflow.com GCC inline assembly
Essentially the word "volatile" tells the optimizer to keep its hands off. asm volatile ( "nop" ); You can also use __asm__ and __volatile__ if you ... http://cholla.mmto.org How does asm("nop"); works? - Stack Overflow
nop is an assembly instruction that does nothing--well as close to nothing as you can do and still execute a machine instruction, which means ... https://stackoverflow.com How long it takes to GCC compiler execute an asm volatile ("nop ...
The NOP instruction takes one cycle in most microprocessors, so do the math: e.g., on a 8 MHz processor, one cycle takes 1 / 8 MHz = 125 ns. https://stackoverflow.com Is `__asm nop` the Windows equivalent of `asm volatile("nop ...
The __asm keyword implementation is quite simplistic in MSVC. It always emits the machine code unaltered and the optimizer doesn't touch it. https://stackoverflow.com 關於GNU Inline Assembly - My code works, I don't know why.
volatile ] asm("Assembler Template"); ... basic inline assembler 預設就是volatile; 基本上編譯器只是把引號內的 ... asm("nop"); /* 啥事都不要做*/ ... http://wen00072.github.io |