__asm

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Microsoft Specific

__asm

assembly-language-instruction

__asm
{
assembly-language-instructions
}

If used without braces, the __asm keyword means that the rest of the line is an assembly-language statement. If used with braces, it means that each line between the braces is an assembly-language statement. For compatibility with previous versions, _asm is a synonym for __asm.

Since the __asm keyword is a statement separator, you can put assembly instructions on the same line.

For related information, see Assembler (Inline) Topics.

Note   Microsoft C++ does not support the AT&T C++ asm keyword.

END Microsoft Specific

Example

// Example of the __asm keyword
__asm                  // __asm block
{
   mov eax, 01h
   int 10h
}

__asm mov eax, 01h      // Separate __asm lines
__asm int 10h

// Multiple __asm statements on a line
__asm mov eax, 01h   __asm int 10h