Function module_info_init

freebsd/arm/arm/unwind.c:283–298

* Initialization must run fairly early, as soon as malloc(9) is available, and * definitely before witness, which uses stack(9). We synthesize a module_info * entry for the kernel, because unwind_module_loaded() doesn't get called for * it. Also, it is unlike other modules in that the elf metadata for locating * the unwind tables might be stripped, so instead we have to use the * _exidx_sta

 * _exidx_start/end symbols created by ldscript.arm.
 */
static int
module_info_init(void *arg __unused)
{
	struct linker_file thekernel;

	STAILQ_INIT(&module_list);

	thekernel.filename   = "kernel";
	thekernel.address    = CADDR(&_start);
	thekernel.size       = UADDR(&_end) - UADDR(&_start);
	thekernel.exidx_addr = CADDR(&_exidx_start);
	thekernel.exidx_size = UADDR(&_exidx_end) - UADDR(&_exidx_start);
	populate_module_info(create_module_info(), &thekernel);

	return (0);
}
SYSINIT(unwind_init, SI_SUB_KMEM, SI_ORDER_ANY, module_info_init, NULL);

/* Expand a 31-bit signed value to a 32-bit signed value */