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From: "Glaux" <glaux AT centrum DOT cz>
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Subject: Re: still no support/alternative to __attribute__((naked)) ?
Date: 2 Mar 2007 06:42:52 -0800
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Ha, finally found what I need. I use asm label to make a pointer, it
works, something like this:

void ring0_function(void) // need to be __attribute__ ((naked))
{
asm("my_label:");
...code
asm("lret");
}

and then use in main

  printf("f: %lX\n",(DWord)ring0_function+3); // function pointer
behind prologue
  asm __volatile__ ("movl $my_label,%%eax" : "=a" (ring0_addr)); //
naked function pointer made of label
  printf("PTR: %lXh\n",ring0_addr);


it compiles to

00401380   push        ebp
00401381   mov         ebp,esp
00401383   ...code
00401385   retf

004013CD   mov         eax,401383h
004013D2   mov         [00404010],eax