Function preload_bootstrap_relocate

freebsd/kern/subr_module.c:280–313

Called from locore. Convert physical pointers to kvm. Sigh. */

/* Called from locore.  Convert physical pointers to kvm. Sigh. */
void
preload_bootstrap_relocate(vm_offset_t offset)
{
    caddr_t	curp;
    uint32_t	*hdr;
    vm_offset_t	*ptr;
    int		next;
    
    if (preload_metadata != NULL) {
	curp = preload_metadata;
	for (;;) {
	    hdr = (uint32_t *)curp;
	    if (hdr[0] == 0 && hdr[1] == 0)
		break;

	    /* Deal with the ones that we know we have to fix */
	    switch (hdr[0]) {
	    case MODINFO_ADDR:
	    case MODINFO_METADATA|MODINFOMD_FONT:
	    case MODINFO_METADATA|MODINFOMD_SSYM:
	    case MODINFO_METADATA|MODINFOMD_ESYM:
		ptr = (vm_offset_t *)(curp + (sizeof(uint32_t) * 2));
		*ptr += offset;
		break;
	    }
	    /* The rest is beyond us for now */

	    /* skip to next field */
	    next = sizeof(uint32_t) * 2 + hdr[1];
	    next = roundup(next, sizeof(u_long));
	    curp += next;
	}
    }
}

/*
 * Parse the modinfo type and append to the provided sbuf.