# define __ASM_FORM(x) " " #x " " # define JUMP_LABEL_INITIAL_NOP ".byte 0xe9 \n\t .long 0\n\t" # define __ASM_SEL(a,b) __ASM_FORM(b) #define _ASM_PTR __ASM_SEL(.long, .quad) # define JUMP_LABEL(key, label) \ do { \ asm goto("1:" \ JUMP_LABEL_INITIAL_NOP \ ".pushsection __jump_table, \"a\" \n\t"\ _ASM_PTR "1b, %l[" #label "], %c0 \n\t" \ ".popsection \n\t" \ : : "i" (key) : : label); \ } while (0) int main(int argc, char *argv[]) { JUMP_LABEL("1", do_trace ); return 1; do_trace: return 0; } /* * check-name: Asm with goto labels. */