/*
* kobj_affix:
*
* Set an object's name and perform global relocs. May only be
* called after the module and any requisite modules are loaded.
*/
int
kobj_affix(kobj_t ko, const char *name)
{
int error;
KASSERT(ko->ko_ksyms == false);
KASSERT(ko->ko_loaded == false);
kobj_setname(ko, name);
/* Cache addresses of undefined symbols. */
error = kobj_checksyms(ko, true);
/* Now do global relocations. */
if (error == 0)
error = kobj_relocate(ko, false);
/*
* Now that we know the name, register the symbol table.
* Do after global relocations because ksyms will pack
* the table.
*/
if (error == 0) {
ksyms_modload(ko->ko_name, ko->ko_symtab, ko->ko_symcnt *
sizeof(Elf_Sym), ko->ko_strtab, ko->ko_strtabsz);
ko->ko_ksyms = true;
}
/* Jettison unneeded memory post-link. */
kobj_jettison(ko);
/*
* Notify MD code that a module has been loaded.
*
* Most architectures use this opportunity to flush their caches.
*/
if (error == 0) {
error = kobj_machdep(ko, (void *)ko->ko_address, ko->ko_size,
true);
if (error != 0)
kobj_error(__func__, __LINE__, ko,
"machine dependent init failed %d", error);
ko->ko_loaded = true;
}
/* If there was an error, destroy the whole object. */
if (error != 0) {
kobj_unload(ko);
}
return error;
}
/*
* kobj_unload:
*
* Unload an object previously loaded by kobj_load().
*/
void
kobj_unload(kobj_t ko)
{
int error;
kobj_close(ko);
kobj_jettison(ko);
/*
* Notify MD code that a module has been unloaded.
*/
if (ko->ko_loaded) {
error = kobj_machdep(ko, (void *)ko->ko_address, ko->ko_size,
false);
if (error != 0)
kobj_error(__func__, __LINE__, ko,
"machine dependent deinit failed %d", error);
}
if (ko->ko_address != 0 && ko->ko_type != KT_MEMORY) {
uvm_km_free(module_map, ko->ko_address, round_page(ko->ko_size),
UVM_KMF_WIRED);
}
if (ko->ko_ksyms == true) {
ksyms_modunload(ko->ko_name);
}
if (ko->ko_symtab != NULL) {
kobj_free(ko, ko->ko_symtab, ko->ko_symcnt * sizeof(Elf_Sym));
}
if (ko->ko_strtab != NULL) {
kobj_free(ko, ko->ko_strtab, ko->ko_strtabsz);
}
if (ko->ko_progtab != NULL) {
kobj_free(ko, ko->ko_progtab, ko->ko_nprogtab *
sizeof(*ko->ko_progtab));
ko->ko_progtab = NULL;
}
if (ko->ko_shstrtab) {
kobj_free(ko, ko->ko_shstrtab, ko->ko_shstrtabsz);
ko->ko_shstrtab = NULL;
}
kmem_free(ko, sizeof(*ko));
}
/*
* kobj_affix:
*
* Set an object's name and perform global relocs. May only be
* called after the module and any requisite modules are loaded.
*/
int
kobj_affix(kobj_t ko, const char *name)
{
int error;
KASSERT(ko->ko_ksyms == false);
KASSERT(ko->ko_loaded == false);
strlcpy(ko->ko_name, name, sizeof(ko->ko_name));
/* Now do global relocations. */
error = kobj_relocate(ko, false);
/*
* Now that we know the name, register the symbol table.
* Do after global relocations because ksyms will pack it.
*/
ksyms_modload(ko->ko_name, ko->ko_symtab, ko->ko_symcnt *
sizeof(Elf_Sym), ko->ko_strtab, ko->ko_strtabsz);
ko->ko_ksyms = true;
/* Jettison unneeded memory post-link. */
kobj_jettison(ko);
/* Notify MD code that a module has been loaded. */
if (error == 0) {
error = kobj_machdep(ko, (void *)ko->ko_address, ko->ko_size,
true);
if (error != 0) {
kobj_error("machine dependent init failed");
}
ko->ko_loaded = true;
}
/* If there was an error, destroy the whole object. */
if (error != 0) {
kobj_unload(ko);
}
return error;
}
