68 lines
2.5 KiB
Plaintext
68 lines
2.5 KiB
Plaintext
(*
|
|
* Copyright 2014, NICTA
|
|
*
|
|
* This software may be distributed and modified according to the terms of
|
|
* the GNU General Public License version 2. Note that NO WARRANTY is provided.
|
|
* See "LICENSE_GPLv2.txt" for details.
|
|
*
|
|
* @TAG(NICTA_GPL)
|
|
*)
|
|
|
|
(*
|
|
* Toplevel capDL refinement theorem.
|
|
*)
|
|
|
|
theory Refine_D
|
|
imports Syscall_DR
|
|
begin
|
|
|
|
text {*
|
|
Toplevel @{text dcorres} theorem.
|
|
*}
|
|
|
|
lemma valid_etcbs_sched: "valid_sched s \<longrightarrow> valid_etcbs s" by fastforce
|
|
|
|
lemma handle_event_invs_and_valid_sched:
|
|
"\<lbrace>invs and valid_sched and (\<lambda>s. e \<noteq> Interrupt \<longrightarrow> ct_active s) and (\<lambda>s. scheduler_action s = resume_cur_thread)\<rbrace> Syscall_A.handle_event e
|
|
\<lbrace>\<lambda>rv. invs and valid_sched\<rbrace>"
|
|
by (wp he_invs handle_event_valid_sched, simp)
|
|
|
|
lemma dcorres_call_kernel:
|
|
"dcorres dc \<top>
|
|
(invs and valid_sched and valid_pdpt_objs and (\<lambda>s. e \<noteq> Interrupt \<longrightarrow> ct_running s)
|
|
and (\<lambda>s. scheduler_action s = resume_cur_thread))
|
|
(Syscall_D.call_kernel e) (Syscall_A.call_kernel e)"
|
|
apply (simp_all add: Syscall_D.call_kernel_def Syscall_A.call_kernel_def)
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_split)
|
|
prefer 2
|
|
apply (rule corres_split_handle [OF _ handle_event_corres])
|
|
prefer 4
|
|
apply (subst bind_return[symmetric])
|
|
apply (rule corres_split)
|
|
apply (rule activate_thread_corres[unfolded fun_app_def])
|
|
apply simp
|
|
apply (rule schedule_dcorres)
|
|
apply (wp schedule_valid_sched | strengthen valid_etcbs_sched)+
|
|
apply (simp add: handle_pending_interrupts_def)
|
|
apply (rule corres_split [OF _ get_active_irq_corres])
|
|
apply (clarsimp simp: when_def split: option.splits)
|
|
apply (rule handle_interrupt_corres)
|
|
apply ((wp | simp)+)[3]
|
|
apply (rule hoare_post_imp_dc2E, rule handle_event_invs_and_valid_sched)
|
|
apply (clarsimp simp: invs_def valid_state_def)
|
|
apply (wp hoare_vcg_if_lift2 hoare_drop_imp he_invs
|
|
| strengthen valid_etcbs_sched valid_idle_invs_strg
|
|
| simp add: conj_comms cong: conj_cong)+
|
|
apply (rule valid_validE2)
|
|
apply (rule hoare_vcg_conj_lift)
|
|
apply (rule he_invs)
|
|
apply (rule handle_event_valid_sched)
|
|
apply fastforce
|
|
apply fastforce
|
|
apply fastforce
|
|
apply (clarsimp simp: ct_in_state_def st_tcb_at_def obj_at_def valid_sched_def)
|
|
done
|
|
|
|
end
|