static int allocate_transition_tls(int id)
{
/* Libc function to initialize TLS-based locale info for ctype functions. */
extern void __ctype_init(void);
/* We want to free and then reallocate the tls rather than simply
* reinitializing it because its size may have changed. TODO: not sure if
* this is right. 0-ing is one thing, but freeing and reallocating can be
* expensive, esp if syscalls are involved. Check out glibc's
* allocatestack.c for what might work. */
free_transition_tls(id);
void *tcb = allocate_tls();
if (!tcb) {
errno = ENOMEM;
return -1;
}
/* Setup some intitial TLS data for the newly allocated transition tls. */
void *temp_tcb = get_tls_desc();
set_tls_desc(tcb);
begin_safe_access_tls_vars();
__vcoreid = id;
__vcore_context = TRUE;
__ctype_init();
end_safe_access_tls_vars();
set_tls_desc(temp_tcb);
/* Install the new tls into the vcpd. */
set_vcpd_tls_desc(id, tcb);
return 0;
}
/* Reinitialize / reset / refresh a TLS to its initial values. This doesn't do
* it properly yet, it merely frees and re-allocates the TLS, which is why we're
* slightly ghetto and return the pointer you should use for the TCB. */
void *reinit_tls(void *tcb)
{
/* TODO: keep this in sync with the methods used in
* allocate_transition_tls() */
free_tls(tcb);
return allocate_tls();
}
void
allocate_initial_tls(Obj_Entry *list)
{
void *tpval;
/*
* Fix the size of the static TLS block by using the maximum
* offset allocated so far and adding a bit for dynamic modules to
* use.
*/
tls_static_space = tls_last_offset + tls_last_size + RTLD_STATIC_TLS_EXTRA;
tpval = allocate_tls(list, NULL, TLS_TCB_SIZE, 16);
__asm __volatile("mov r13 = %0" :: "r"(tpval));
}
void
allocate_initial_tls(Obj_Entry *objs)
{
char *tls;
/*
* Fix the size of the static TLS block by using the maximum
* offset allocated so far and adding a bit for dynamic modules to
* use.
*/
tls_static_space = tls_last_offset + tls_last_size + RTLD_STATIC_TLS_EXTRA;
tls = (char *) allocate_tls(objs, NULL, TLS_TCB_SIZE, 8);
sysarch(MIPS_SET_TLS, tls);
}
static int allocate_transition_tls(int id)
{
/* We want to free and then reallocate the tls rather than simply
* reinitializing it because its size may have changed. TODO: not sure if
* this is right. 0-ing is one thing, but freeing and reallocating can be
* expensive, esp if syscalls are involved. Check out glibc's
* allocatestack.c for what might work. */
free_transition_tls(id);
void *tcb = allocate_tls();
if (!tcb) {
errno = ENOMEM;
return -1;
}
set_vcpd_tls_desc(id, tcb);
return 0;
}
