Use gcc inline assembly
Nothing extra needed in compilation just gcc hello.c
eg:-
asm mov ah,0x0E;
asm volatile("mov $0x0E,%ah"
Read online documentation (google) regarding gcc inline assembly and
at&t assembly notation.
It is quite opposite to Intel ASM Notation
eg-
mov ah,0x0E (INTEL ASSEMBLER SYNTAX)
is
mov $0x0e,%ah (AT&T used by GCC)
Here is a example
compilation is gcc file.c
./a.out
-----------------------------------
#include <stdio.h>
int a=10;
int b=20;
int result;
int main()
{
asm( "movl a,%eax\n\t"
"movl b,%ebx\n\t"
"imull %ebx,%eax\n\t"
"movl %eax,result\n\t"
);
printf("%d*%d=%d\n",a,b,result);
return 0;
}
~
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