In config/m68k/common.h, we have in sysdepCallMethodV:

	asm volatile ("jsr	%2@\n"				\
	 : "=r" (d0), "=r" (d1)					\
	 : "a" ((CALL)->function),				\
	   "r" ((CALL)->nrargs * sizeof(int))			\
	 : "cc", "memory");					\

Now, I am not all that familiar with embedded machine code, but this looks
like someone wants to pass nrargs*sizeof(int) as a parameter, but no
register or instruction is specified for it to go in.  There is only one
argument to the jsr.

Questions:

1. Is this OK?

2. Why does Linux have a different sysdepCallMethod implementation?

3. What are the argument passing conventions for jitted m68k code?
   - Are args pushed right to left (C) or left to right (Pascal)
   - Are args passed on the stack or registers?