What is the meaning of inline assembly in C language

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1. Inline assembler the assembly code embedded in CCompact + code is equivalent to an inline function written in assembly statements. The advantage is high efficiency.

2. Use asm keywords to implement.

Inline assembly is so useful mainly because it can manipulate C variables, such as getting values from C variables and outputting values to C variables. Because of this capability, asm acts as an interface between the assembly instruction and the C program that contains it.

Example

# include # include int main (void) {/ * basic command demo * / _ asm__ ("movl% eax,% ecx"); / * set b = 10 * / int a = 10, b = 0 ("movl% 1,% eax;"movl% eax, 0" ":" = r "(b) / * output * /:" r "(a) / * input * /:"% eax "/ * clobbered register * /); printf ("% s: B =% d\ n ", _ _ func__, b); return 0;} at this point, I believe you have a deeper understanding of what" c inline assembly means ", you might as well do it! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!