1
2# define __ASM_FORM(x)  " " #x " "
3# define JUMP_LABEL_INITIAL_NOP ".byte 0xe9 \n\t .long 0\n\t"
4# define __ASM_SEL(a,b) __ASM_FORM(b)
5#define _ASM_PTR        __ASM_SEL(.long, .quad)
6
7# define JUMP_LABEL(key, label)                                 \
8       do {                                                    \
9               asm goto("1:"                                   \
10                       JUMP_LABEL_INITIAL_NOP                  \
11                       ".pushsection __jump_table,  \"a\" \n\t"\
12                       _ASM_PTR "1b, %l[" #label "], %c0 \n\t" \
13                       ".popsection \n\t"                      \
14                       : :  "i" (key) :  : label);             \
15       } while (0)
16
17int main(int argc, char *argv[])
18{
19       JUMP_LABEL("1", do_trace );
20       return 1;
21do_trace:
22       return 0;
23}
24
25/*
26 * check-name: Asm with goto labels.
27 */
28
29