1397 lines
66 KiB
Plaintext
1397 lines
66 KiB
Plaintext
(*
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* Copyright 2020, Data61, CSIRO (ABN 41 687 119 230)
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*)
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(*
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Top level architecture related proofs.
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*)
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theory Arch_R
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imports Untyped_R Finalise_R
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begin
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unbundle l4v_word_context
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lemmas [datatype_schematic] = cap.sel list.sel(1) list.sel(3)
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context begin interpretation Arch . (*FIXME: arch_split*)
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declare arch_cap.sel [datatype_schematic]
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declare is_aligned_shiftl [intro!]
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declare is_aligned_shiftr [intro!]
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definition
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"asid_ci_map i \<equiv>
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case i of RISCV64_A.MakePool frame slot parent base \<Rightarrow>
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RISCV64_H.MakePool frame (cte_map slot) (cte_map parent) (ucast base)"
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definition
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"valid_aci' aci \<equiv> case aci of MakePool frame slot parent base \<Rightarrow>
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\<lambda>s. cte_wp_at' (\<lambda>c. cteCap c = NullCap) slot s \<and>
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cte_wp_at' (\<lambda>cte. \<exists>idx. cteCap cte = UntypedCap False frame pageBits idx) parent s \<and>
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descendants_of' parent (ctes_of s) = {} \<and>
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slot \<noteq> parent \<and>
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ex_cte_cap_to' slot s \<and>
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sch_act_simple s \<and>
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is_aligned base asid_low_bits \<and> asid_wf base"
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lemma vp_strgs':
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"valid_pspace' s \<longrightarrow> pspace_distinct' s"
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"valid_pspace' s \<longrightarrow> pspace_aligned' s"
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"valid_pspace' s \<longrightarrow> valid_mdb' s"
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by auto
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lemma safe_parent_strg':
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"cte_wp_at' (\<lambda>cte. cteCap cte = UntypedCap False frame pageBits idx) p s \<and>
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descendants_of' p (ctes_of s) = {} \<and>
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valid_pspace' s
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\<longrightarrow> safe_parent_for' (ctes_of s) p (ArchObjectCap (ASIDPoolCap frame base))"
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apply (clarsimp simp: safe_parent_for'_def cte_wp_at_ctes_of)
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apply (case_tac cte)
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apply (simp add: isCap_simps)
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apply (subst conj_comms)
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apply (rule context_conjI)
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apply (drule ctes_of_valid_cap', fastforce)
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apply (clarsimp simp: valid_cap'_def capAligned_def)
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apply (drule is_aligned_no_overflow)
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apply (clarsimp simp: capRange_def asid_low_bits_def bit_simps)
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apply (clarsimp simp: sameRegionAs_def2 isCap_simps capRange_def asid_low_bits_def bit_simps)
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done
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lemma descendants_of'_helper:
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"\<lbrace>P\<rbrace> f \<lbrace>\<lambda>r s. Q (descendants_of' t (null_filter' (ctes_of s)))\<rbrace>
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\<Longrightarrow> \<lbrace>P\<rbrace> f \<lbrace>\<lambda>r s. Q (descendants_of' t (ctes_of s))\<rbrace>"
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apply (clarsimp simp:valid_def)
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apply (subst null_filter_descendants_of')
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prefer 2
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apply fastforce
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apply simp
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done
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lemma createObject_typ_at':
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"\<lbrace>\<lambda>s. koTypeOf ty = otype \<and> is_aligned ptr (objBitsKO ty) \<and>
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pspace_aligned' s \<and> pspace_no_overlap' ptr (objBitsKO ty) s\<rbrace>
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createObjects' ptr (Suc 0) ty 0
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\<lbrace>\<lambda>rv s. typ_at' otype ptr s\<rbrace>"
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supply
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is_aligned_neg_mask_eq[simp del]
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is_aligned_neg_mask_weaken[simp del]
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apply (clarsimp simp:createObjects'_def alignError_def split_def | wp unless_wp | wpc )+
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apply (clarsimp simp:obj_at'_def ko_wp_at'_def typ_at'_def pspace_distinct'_def)+
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apply (subgoal_tac "ps_clear ptr (objBitsKO ty)
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(s\<lparr>ksPSpace := \<lambda>a. if a = ptr then Some ty else ksPSpace s a\<rparr>)")
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apply (simp add:ps_clear_def)+
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apply (rule ccontr)
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apply (drule int_not_emptyD)
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apply clarsimp
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apply (unfold pspace_no_overlap'_def)
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apply (erule allE)+
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apply (erule(1) impE)
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apply (subgoal_tac "x \<in> mask_range x (objBitsKO y)")
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apply (fastforce simp: is_aligned_neg_mask_eq)
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apply (drule(1) pspace_alignedD')
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apply (clarsimp simp: is_aligned_no_overflow_mask)
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done
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lemma retype_region2_ext_retype_region_ArchObject:
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"retype_region ptr n us (ArchObject x)=
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retype_region2 ptr n us (ArchObject x)"
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apply (rule ext)
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apply (simp add: retype_region_def retype_region2_def bind_assoc
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retype_region2_ext_def retype_region_ext_def default_ext_def)
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apply (rule ext)
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apply (intro monad_eq_split_tail ext)+
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apply simp
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apply simp
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apply (simp add:gets_def get_def bind_def return_def simpler_modify_def )
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apply (rule_tac x = xc in fun_cong)
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apply (rule_tac f = do_extended_op in arg_cong)
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apply (rule ext)
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apply simp
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apply simp
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done
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lemma set_cap_device_and_range_aligned:
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"is_aligned ptr sz \<Longrightarrow> \<lbrace>\<lambda>_. True\<rbrace>
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set_cap
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(cap.UntypedCap dev ptr sz idx)
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aref
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\<lbrace>\<lambda>rv s.
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\<exists>slot.
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cte_wp_at
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(\<lambda>c. cap_is_device c = dev \<and>
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up_aligned_area ptr sz \<subseteq> cap_range c)
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slot s\<rbrace>"
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apply (subst is_aligned_neg_mask_eq[symmetric])
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apply simp
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apply (wp set_cap_device_and_range)
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done
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lemma performASIDControlInvocation_corres:
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"asid_ci_map i = i' \<Longrightarrow>
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corres dc
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(einvs and ct_active and valid_aci i)
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(invs' and ct_active' and valid_aci' i')
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(perform_asid_control_invocation i)
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(performASIDControlInvocation i')"
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supply
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is_aligned_neg_mask_eq[simp del]
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is_aligned_neg_mask_weaken[simp del]
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apply (cases i)
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apply (rename_tac word1 prod1 prod2 word2)
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apply (clarsimp simp: asid_ci_map_def)
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apply (simp add: perform_asid_control_invocation_def placeNewObject_def2
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performASIDControlInvocation_def)
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apply (rule corres_name_pre)
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apply (clarsimp simp:valid_aci_def valid_aci'_def cte_wp_at_ctes_of cte_wp_at_caps_of_state)
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apply (subgoal_tac "valid_cap' (capability.UntypedCap False word1 pageBits idx) s'")
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prefer 2
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apply (case_tac ctea)
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apply clarsimp
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apply (erule ctes_of_valid_cap')
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apply fastforce
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apply (frule valid_capAligned)
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apply (clarsimp simp: capAligned_def page_bits_def)
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apply (rule corres_guard_imp)
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apply (rule corres_split)
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apply (erule deleteObjects_corres)
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apply (simp add:pageBits_def)
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apply (rule corres_split[OF getSlotCap_corres], simp)
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apply (rule_tac F = " pcap = (cap.UntypedCap False word1 pageBits idxa)" in corres_gen_asm)
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apply (rule corres_split[OF updateFreeIndex_corres])
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apply (clarsimp simp:is_cap_simps)
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apply (simp add: free_index_of_def)
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apply (rule corres_split)
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apply (simp add: retype_region2_ext_retype_region_ArchObject )
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apply (rule corres_retype [where ty="Inl (KOArch (KOASIDPool F))" for F,
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unfolded APIType_map2_def makeObjectKO_def,
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THEN createObjects_corres',simplified,
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where val = "makeObject::asidpool"])
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apply simp
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apply (simp add: objBits_simps obj_bits_api_def arch_kobj_size_def
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default_arch_object_def)+
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apply (simp add: obj_relation_retype_def default_object_def
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default_arch_object_def objBits_simps)
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apply (simp add: other_obj_relation_def asid_pool_relation_def)
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apply (simp add: makeObject_asidpool const_def inv_def)
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apply (rule range_cover_full)
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apply (simp add:obj_bits_api_def arch_kobj_size_def default_arch_object_def)+
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apply (rule corres_split)
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apply (rule cteInsert_simple_corres, simp, rule refl, rule refl)
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apply (rule_tac F="asid_low_bits_of word2 = 0" in corres_gen_asm)
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apply (simp add: is_aligned_mask dc_def[symmetric])
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apply (rule corres_split[where P=\<top> and P'=\<top> and r'="\<lambda>t t'. t = t' o ucast"])
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apply (clarsimp simp: state_relation_def arch_state_relation_def)
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apply (rule corres_trivial)
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apply (rule corres_modify)
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apply (thin_tac "x \<in> state_relation" for x)
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apply (clarsimp simp: state_relation_def arch_state_relation_def o_def)
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apply (rule ext)
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apply (clarsimp simp: up_ucast_inj_eq)
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apply wp+
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apply (strengthen safe_parent_strg[where idx = "2^pageBits"])
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apply (strengthen invs_valid_objs invs_distinct
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invs_psp_aligned invs_mdb
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| simp cong:conj_cong)+
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apply (wp retype_region_plain_invs[where sz = pageBits]
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retype_cte_wp_at[where sz = pageBits])+
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apply (strengthen vp_strgs'
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safe_parent_strg'[where idx = "2^pageBits"])
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apply (simp cong: conj_cong)
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apply (wp createObjects_valid_pspace'
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[where sz = pageBits and ty="Inl (KOArch (KOASIDPool undefined))"])
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apply (simp add: makeObjectKO_def)+
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apply (simp add:objBits_simps range_cover_full valid_cap'_def)+
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apply (fastforce intro!: canonical_address_neq_mask simp: kernel_mappings_canonical)
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apply (rule in_kernel_mappings_neq_mask, (simp add: valid_cap'_def bit_simps)+)[1]
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apply (clarsimp simp:valid_cap'_def)
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apply (wp createObject_typ_at'
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createObjects_orig_cte_wp_at'[where sz = pageBits])
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apply (rule descendants_of'_helper)
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apply (wp createObjects_null_filter'
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[where sz = pageBits and ty="Inl (KOArch (KOASIDPool undefined))"])
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apply (clarsimp simp: conj_comms obj_bits_api_def arch_kobj_size_def
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objBits_simps default_arch_object_def pred_conj_def)
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apply (clarsimp simp: conj_comms
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| strengthen invs_mdb invs_valid_pspace)+
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apply (simp add:region_in_kernel_window_def)
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apply (wp set_untyped_cap_invs_simple[where sz = pageBits]
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set_cap_cte_wp_at
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set_cap_caps_no_overlap[where sz = pageBits]
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set_cap_no_overlap
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set_cap_device_and_range_aligned[where dev = False,simplified]
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set_untyped_cap_caps_overlap_reserved[where sz = pageBits])+
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apply (clarsimp simp: conj_comms obj_bits_api_def arch_kobj_size_def
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objBits_simps default_arch_object_def
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makeObjectKO_def range_cover_full
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simp del: capFreeIndex_update.simps
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| strengthen invs_valid_pspace' invs_pspace_aligned'
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invs_pspace_distinct'
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exI[where x="makeObject :: asidpool"])+
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apply (wp updateFreeIndex_forward_invs'
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updateFreeIndex_pspace_no_overlap'
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updateFreeIndex_caps_no_overlap''
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updateFreeIndex_descendants_of2
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updateFreeIndex_cte_wp_at
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updateFreeIndex_caps_overlap_reserved
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| simp add: descendants_of_null_filter' split del: if_split)+
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apply (wp get_cap_wp)+
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apply (subgoal_tac "word1 && ~~ mask pageBits = word1 \<and> pageBits \<le> word_bits \<and> word_size_bits \<le> pageBits")
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prefer 2
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apply (clarsimp simp:bit_simps word_bits_def is_aligned_neg_mask_eq)
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apply (simp only:delete_objects_rewrite)
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apply wp+
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apply (clarsimp simp: conj_comms)
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apply (clarsimp simp: conj_comms ex_disj_distrib
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| strengthen invs_valid_pspace' invs_pspace_aligned'
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invs_pspace_distinct')+
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apply (wp deleteObjects_invs'[where p="makePoolParent i'"]
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deleteObjects_cte_wp_at'
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deleteObjects_descendants[where p="makePoolParent i'"])
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apply (clarsimp split del: if_split simp:valid_cap'_def)
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apply (wp hoare_vcg_ex_lift
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deleteObjects_caps_no_overlap''[where slot="makePoolParent i'"]
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deleteObject_no_overlap
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deleteObjects_ct_active'[where cref="makePoolParent i'"])
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apply (clarsimp simp: is_simple_cap_def valid_cap'_def max_free_index_def is_cap_simps
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cong: conj_cong)
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apply (strengthen empty_descendants_range_in')
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apply (wp deleteObjects_descendants[where p="makePoolParent i'"]
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deleteObjects_cte_wp_at'
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deleteObjects_null_filter[where p="makePoolParent i'"])
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apply (clarsimp simp:invs_mdb max_free_index_def invs_untyped_children)
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apply (subgoal_tac "detype_locale x y sa" for x y)
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prefer 2
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apply (simp add:detype_locale_def)
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apply (fastforce simp:cte_wp_at_caps_of_state descendants_range_def2
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empty_descendants_range_in invs_untyped_children)
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apply (intro conjI)
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apply (clarsimp)
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apply (erule(1) caps_of_state_valid)
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subgoal by (fastforce simp:cte_wp_at_caps_of_state descendants_range_def2 empty_descendants_range_in)
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apply (fold_subgoals (prefix))[2]
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subgoal premises prems using prems by (clarsimp simp:invs_def valid_state_def)+
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apply (clarsimp simp:cte_wp_at_caps_of_state)
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apply (drule detype_locale.non_null_present)
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apply (fastforce simp:cte_wp_at_caps_of_state)
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apply simp
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apply (frule_tac ptr = "(aa,ba)" in detype_invariants [rotated 3])
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apply fastforce
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apply simp
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apply (simp add: cte_wp_at_caps_of_state)
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apply (simp add: is_cap_simps)
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apply (simp add:empty_descendants_range_in descendants_range_def2)
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apply (frule intvl_range_conv[where bits = pageBits])
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apply (clarsimp simp:pageBits_def word_bits_def)
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apply (clarsimp simp: invs_valid_objs cte_wp_at_caps_of_state range_cover_full
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invs_psp_aligned invs_distinct cap_master_cap_simps is_cap_simps
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is_simple_cap_def)
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apply (clarsimp simp: conj_comms)
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apply (rule conjI, clarsimp simp: is_aligned_asid_low_bits_of_zero)
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apply (frule ex_cte_cap_protects)
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apply (simp add:cte_wp_at_caps_of_state)
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apply (simp add:empty_descendants_range_in)
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apply fastforce
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apply (rule subset_refl)
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apply fastforce
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apply (clarsimp simp: is_simple_cap_arch_def)
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apply (rule conjI, clarsimp)
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apply (rule conjI, clarsimp simp: clear_um_def)
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apply (simp add:detype_clear_um_independent)
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apply (rule conjI)
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apply clarsimp
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apply (drule_tac p = "(aa,ba)" in cap_refs_in_kernel_windowD2[OF caps_of_state_cteD])
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apply fastforce
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apply (clarsimp simp: region_in_kernel_window_def valid_cap_def
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cap_aligned_def is_aligned_neg_mask_eq detype_def clear_um_def)
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apply fastforce
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apply (rule conjI,erule caps_no_overlap_detype[OF descendants_range_caps_no_overlapI])
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apply (clarsimp simp:is_aligned_neg_mask_eq cte_wp_at_caps_of_state)
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apply (simp add:empty_descendants_range_in)+
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apply (rule conjI, rule pspace_no_overlap_subset,
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rule pspace_no_overlap_detype[OF caps_of_state_valid])
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apply (simp add:invs_psp_aligned invs_valid_objs is_aligned_neg_mask_eq)+
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apply (clarsimp simp: detype_def clear_um_def detype_ext_def valid_sched_def valid_etcbs_def
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st_tcb_at_kh_def obj_at_kh_def st_tcb_at_def obj_at_def is_etcb_at_def)
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apply (simp add: detype_def clear_um_def)
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apply (drule_tac x = "cte_map (aa,ba)" in pspace_relation_cte_wp_atI[OF state_relation_pspace_relation])
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apply (simp add:invs_valid_objs)+
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apply clarsimp
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apply (drule cte_map_inj_eq)
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apply ((fastforce simp:cte_wp_at_caps_of_state)+)[5]
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apply (clarsimp simp:cte_wp_at_caps_of_state invs_valid_pspace' conj_comms cte_wp_at_ctes_of
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valid_cap_simps')
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apply (strengthen refl)
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apply clarsimp
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apply (frule empty_descendants_range_in')
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apply (intro conjI,
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simp_all add: is_simple_cap'_def isCap_simps descendants_range'_def2
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null_filter_descendants_of'[OF null_filter_simp']
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capAligned_def asid_low_bits_def)
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apply (erule descendants_range_caps_no_overlapI')
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apply (fastforce simp:cte_wp_at_ctes_of is_aligned_neg_mask_eq)
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apply (simp add:empty_descendants_range_in')
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apply (simp add:word_bits_def bit_simps)
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apply (rule is_aligned_weaken)
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apply (rule is_aligned_shiftl_self[unfolded shiftl_t2n,where p = 1,simplified])
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apply (simp add:pageBits_def)
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apply clarsimp
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apply (drule(1) cte_cap_in_untyped_range)
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apply (fastforce simp:cte_wp_at_ctes_of)
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apply assumption+
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apply fastforce
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apply simp
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apply clarsimp
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apply (drule (1) cte_cap_in_untyped_range)
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apply (fastforce simp add: cte_wp_at_ctes_of)
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apply assumption+
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apply (clarsimp simp: invs'_def valid_state'_def if_unsafe_then_cap'_def cte_wp_at_ctes_of)
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apply fastforce
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apply simp
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done
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definition
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archinv_relation :: "arch_invocation \<Rightarrow> Arch.invocation \<Rightarrow> bool"
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where
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"archinv_relation ai ai' \<equiv> case ai of
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arch_invocation.InvokePageTable pti \<Rightarrow>
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\<exists>pti'. ai' = InvokePageTable pti' \<and> page_table_invocation_map pti pti'
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| arch_invocation.InvokePage pgi \<Rightarrow>
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\<exists>pgi'. ai' = InvokePage pgi' \<and> page_invocation_map pgi pgi'
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| arch_invocation.InvokeASIDControl aci \<Rightarrow>
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\<exists>aci'. ai' = InvokeASIDControl aci' \<and> aci' = asid_ci_map aci
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| arch_invocation.InvokeASIDPool ap \<Rightarrow>
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\<exists>ap'. ai' = InvokeASIDPool ap' \<and> ap' = asid_pool_invocation_map ap"
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definition
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valid_arch_inv' :: "Arch.invocation \<Rightarrow> kernel_state \<Rightarrow> bool"
|
|
where
|
|
"valid_arch_inv' ai \<equiv> case ai of
|
|
InvokePageTable pti \<Rightarrow> valid_pti' pti
|
|
| InvokePage pgi \<Rightarrow> valid_page_inv' pgi
|
|
| InvokeASIDControl aci \<Rightarrow> valid_aci' aci
|
|
| InvokeASIDPool ap \<Rightarrow> valid_apinv' ap"
|
|
|
|
lemma mask_vmrights_corres:
|
|
"maskVMRights (vmrights_map R) (rightsFromWord d) =
|
|
vmrights_map (mask_vm_rights R (data_to_rights d))"
|
|
by (clarsimp simp: rightsFromWord_def data_to_rights_def
|
|
vmrights_map_def Let_def maskVMRights_def
|
|
mask_vm_rights_def nth_ucast
|
|
validate_vm_rights_def vm_read_write_def
|
|
vm_kernel_only_def vm_read_only_def
|
|
split: bool.splits)
|
|
|
|
lemma vm_attributes_corres:
|
|
"vmattributes_map (attribs_from_word w) = attribsFromWord w"
|
|
by (clarsimp simp: attribsFromWord_def attribs_from_word_def
|
|
Let_def vmattributes_map_def)
|
|
|
|
lemma checkVPAlignment_corres:
|
|
"corres (ser \<oplus> dc) \<top> \<top>
|
|
(check_vp_alignment sz w)
|
|
(checkVPAlignment sz w)"
|
|
apply (simp add: check_vp_alignment_def checkVPAlignment_def)
|
|
apply (cases sz, simp_all add: corres_returnOk unlessE_whenE is_aligned_mask)
|
|
apply ((rule corres_guard_imp, rule corres_whenE, rule refl, auto)[1])+
|
|
done
|
|
|
|
lemma checkVP_wpR [wp]:
|
|
"\<lbrace>\<lambda>s. vmsz_aligned w sz \<longrightarrow> P () s\<rbrace>
|
|
checkVPAlignment sz w \<lbrace>P\<rbrace>, -"
|
|
apply (simp add: checkVPAlignment_def unlessE_whenE cong: vmpage_size.case_cong)
|
|
apply (rule hoare_pre)
|
|
apply (wp whenE_wp|wpc)+
|
|
apply (simp add: is_aligned_mask vmsz_aligned_def)
|
|
done
|
|
|
|
lemma asidHighBits [simp]:
|
|
"asidHighBits = asid_high_bits"
|
|
by (simp add: asidHighBits_def asid_high_bits_def)
|
|
|
|
declare word_unat_power [symmetric, simp del]
|
|
|
|
|
|
lemma case_option_corresE:
|
|
assumes nonec: "corres r Pn Qn (nc >>=E f) (nc' >>=E g)"
|
|
and somec: "\<And>v'. corres r (Ps v') (Qs v') (sc v' >>=E f) (sc' v' >>=E g)"
|
|
shows "corres r (case_option Pn Ps v) (case_option Qn Qs v) (case_option nc sc v >>=E f) (case_option nc' sc' v >>=E g)"
|
|
apply (cases v)
|
|
apply simp
|
|
apply (rule nonec)
|
|
apply simp
|
|
apply (rule somec)
|
|
done
|
|
|
|
|
|
lemma cap_relation_Untyped_eq:
|
|
"cap_relation c (UntypedCap d p sz f) = (c = cap.UntypedCap d p sz f)"
|
|
by (cases c) auto
|
|
|
|
declare check_vp_alignment_inv[wp del]
|
|
|
|
lemma select_ext_fa:
|
|
"free_asid_select asid_tbl \<in> S
|
|
\<Longrightarrow> ((select_ext (\<lambda>_. free_asid_select asid_tbl) S) :: _ det_ext_monad)
|
|
= return (free_asid_select asid_tbl)"
|
|
by (simp add: select_ext_def get_def gets_def bind_def assert_def return_def fail_def)
|
|
|
|
lemma select_ext_fap:
|
|
"free_asid_pool_select p b \<in> S
|
|
\<Longrightarrow> ((select_ext (\<lambda>_. free_asid_pool_select p b) S) :: _ det_ext_monad)
|
|
= return (free_asid_pool_select p b)"
|
|
by (simp add: select_ext_def get_def gets_def bind_def assert_def return_def)
|
|
|
|
lemmas vmsz_aligned_imp_aligned
|
|
= vmsz_aligned_def[THEN meta_eq_to_obj_eq, THEN iffD1, THEN is_aligned_weaken]
|
|
|
|
lemma checkSlot_corres:
|
|
"(\<And>pte pte'. pte_relation' pte pte' \<Longrightarrow> test' pte' = test pte) \<Longrightarrow>
|
|
corres (ser \<oplus> dc)
|
|
(pte_at p and pspace_aligned and pspace_distinct) \<top>
|
|
(check_slot p test)
|
|
(checkSlot p test')"
|
|
apply (simp add: check_slot_def checkSlot_def unlessE_whenE liftE_bindE)
|
|
apply (corres corres: corres_throwErrorTT[of ser])
|
|
done
|
|
|
|
lemma vmrights_map_vm_kernel_only[simp]:
|
|
"vmrights_map vm_kernel_only = VMKernelOnly"
|
|
by (simp add: vmrights_map_def vm_kernel_only_def)
|
|
|
|
lemma not_in_vm_kernel_only[simp]:
|
|
"x \<notin> vm_kernel_only"
|
|
by (simp add: vm_kernel_only_def)
|
|
|
|
lemma vmrights_map_VMKernelOnly:
|
|
"vmrights_map (mask_vm_rights R r) = VMKernelOnly \<Longrightarrow> mask_vm_rights R r = vm_kernel_only"
|
|
by (auto simp: vmrights_map_def mask_vm_rights_def validate_vm_rights_def vm_read_write_def
|
|
vm_read_only_def split: if_splits)
|
|
|
|
lemma machine_word_len_pageBits_shift[simp]:
|
|
"UCAST(pte_ppn_len \<rightarrow> machine_word_len) (UCAST(machine_word_len \<rightarrow> pte_ppn_len) (p >> pageBits))
|
|
= p >> pageBits"
|
|
by (word_eqI_solve simp: ucast_ucast_mask pageBits_def dest: bit_imp_possible_bit)
|
|
|
|
lemma vmrights_map_empty[simp]:
|
|
"vmrights_map {} = VMKernelOnly"
|
|
by (simp add: vmrights_map_def)
|
|
|
|
lemma pte_relation_make_user[simp]:
|
|
"pte_relation'
|
|
(make_user_pte p (attribs_from_word a) (mask_vm_rights R (data_to_rights r)))
|
|
(makeUserPTE p (\<not>attribsFromWord a) (maskVMRights (vmrights_map R) (rightsFromWord r)))"
|
|
by (auto simp: make_user_pte_def makeUserPTE_def attribs_from_word_def
|
|
attribsFromWord_def mask_vmrights_corres vmrights_map_VMKernelOnly)
|
|
|
|
lemma below_user_vtop_in_user_region:
|
|
"p < user_vtop \<Longrightarrow> p \<in> user_region"
|
|
apply (simp add: user_region_def canonical_user_def user_vtop_def pptrUserTop_def)
|
|
apply (simp add: bit_simps is_aligned_mask canonical_bit_def)
|
|
by (word_bitwise, clarsimp simp: word_size)
|
|
|
|
lemma vmsz_aligned_user_region:
|
|
"\<lbrakk> vmsz_aligned p sz; p + (2 ^ pageBitsForSize sz - 1) < pptrUserTop \<rbrakk>
|
|
\<Longrightarrow> p \<in> user_region"
|
|
using pbfs_atleast_pageBits[of sz]
|
|
apply (simp flip: mask_2pm1 add: vmsz_aligned_def)
|
|
apply (simp add: user_region_def canonical_user_def pptrUserTop_def)
|
|
apply (simp add: bit_simps is_aligned_mask canonical_bit_def word_plus_and_or_coroll)
|
|
by (word_bitwise, clarsimp simp: word_size)
|
|
|
|
lemma decodeX64FrameInvocation_corres:
|
|
"\<lbrakk>cap = arch_cap.FrameCap p R sz d opt; acap_relation cap cap';
|
|
list_all2 cap_relation (map fst excaps) (map fst excaps');
|
|
list_all2 (\<lambda>s s'. s' = cte_map s) (map snd excaps) (map snd excaps') \<rbrakk> \<Longrightarrow>
|
|
corres (ser \<oplus> archinv_relation)
|
|
(invs and valid_cap (cap.ArchObjectCap cap) and
|
|
cte_wp_at ((=) (cap.ArchObjectCap cap)) slot and
|
|
(\<lambda>s. \<forall>x\<in>set excaps. s \<turnstile> fst x \<and> cte_wp_at (\<lambda>_. True) (snd x) s))
|
|
(invs' and valid_cap' (capability.ArchObjectCap cap') and
|
|
(\<lambda>s. \<forall>x\<in>set excaps'. valid_cap' (fst x) s \<and> cte_wp_at' (\<lambda>_. True) (snd x) s))
|
|
(decode_frame_invocation l args slot cap excaps)
|
|
(decodeRISCVFrameInvocation l args (cte_map slot) cap' excaps')"
|
|
apply (simp add: decode_frame_invocation_def decodeRISCVFrameInvocation_def Let_def isCap_simps
|
|
split del: if_split)
|
|
apply (cases "invocation_type l = ArchInvocationLabel RISCVPageMap")
|
|
apply (case_tac "\<not>(2 < length args \<and> excaps \<noteq> [])")
|
|
apply (auto simp: decode_fr_inv_map_def split: list.split)[1]
|
|
apply (simp add: decode_fr_inv_map_def Let_def neq_Nil_conv)
|
|
apply (elim exE conjE)
|
|
apply (simp split: list.split, intro conjI impI allI, simp_all)[1]
|
|
apply (simp add: decodeRISCVFrameInvocationMap_def)
|
|
apply (simp split: cap.split, intro conjI impI allI, simp_all)[1]
|
|
apply (rename_tac arch_capa)
|
|
apply (case_tac arch_capa, simp_all)[1]
|
|
apply (rename_tac wd opt')
|
|
apply (case_tac opt'; simp add: mdata_map_def)
|
|
apply (rename_tac av, case_tac av, simp)
|
|
apply (rename_tac a v)
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_splitEE)
|
|
apply (rule corres_lookup_error)
|
|
apply (rule findVSpaceForASID_corres[OF refl])
|
|
apply (rule whenE_throwError_corres, simp, simp)
|
|
apply (rule corres_splitEE[where r'=dc])
|
|
apply (rule corres_whenE)
|
|
apply (simp add: pptr_base_def user_vtop_def pptrUserTop_def shiftl_t2n mask_def)
|
|
apply (rule corres_trivial, simp)
|
|
apply simp
|
|
apply (rule corres_splitEE[where r'=dc])
|
|
apply (rule checkVPAlignment_corres)
|
|
apply (rule corres_splitEE)
|
|
apply (simp only: corres_liftE_rel_sum)
|
|
apply (rule lookupPTSlot_corres)
|
|
apply (clarsimp simp: unlessE_whenE)
|
|
apply (rule corres_splitEE[where r'=dc])
|
|
apply datatype_schem
|
|
apply (rule corres_whenE, simp)
|
|
apply (rule corres_trivial, clarsimp simp: lookup_failure_map_def)
|
|
apply simp
|
|
apply (rule corres_splitEE[where r'=dc])
|
|
apply (cases opt; clarsimp)
|
|
apply (fold ser_def)
|
|
apply (rule checkSlot_corres)
|
|
apply fastforce
|
|
apply (rule corres_guard_imp)
|
|
apply (rule whenE_throwError_corres)
|
|
apply fastforce
|
|
apply (rule up_ucast_inj_eq[THEN arg_cong_Not, symmetric], simp)
|
|
apply (rule whenE_throwError_corres)
|
|
apply fastforce
|
|
apply presburger
|
|
apply (rule checkSlot_corres)
|
|
apply (case_tac pte; simp add: is_PageTablePTE_def RISCV64_H.isPageTablePTE_def)
|
|
apply blast
|
|
apply blast
|
|
apply (rule corres_trivial, rule corres_returnOk)
|
|
apply (clarsimp simp: archinv_relation_def page_invocation_map_def mapping_map_def)
|
|
apply (wpsimp simp: if_apply_def2
|
|
wp: validE_validE_R[OF find_vspace_for_asid_wp, simplified])+
|
|
apply (clarsimp simp: invs_psp_aligned invs_distinct invs_vspace_objs invs_valid_asid_table
|
|
cte_wp_at_caps_of_state is_cap_simps)
|
|
apply (rule conjI; clarsimp?)
|
|
apply (clarsimp simp: valid_cap_def wellformed_mapdata_def)
|
|
apply (rule conjI)
|
|
apply (rule exI)+
|
|
apply (rule conjI, erule vspace_for_asid_vs_lookup, simp)
|
|
apply (rule conjI)
|
|
apply (simp add: not_le vmsz_aligned_user_region mask_def user_vtop_def)
|
|
apply clarsimp
|
|
apply (drule (1) pt_lookup_slot_vs_lookup_slotI, clarsimp)
|
|
apply (erule vs_lookup_slot_pte_at; assumption?)
|
|
apply (simp add: not_le vmsz_aligned_user_region mask_def user_vtop_def)
|
|
apply fastforce
|
|
\<comment> \<open>PageUnmap\<close>
|
|
apply (simp split del: if_split)
|
|
apply (cases "invocation_type l = ArchInvocationLabel RISCVPageUnmap")
|
|
apply simp
|
|
apply (rule corres_returnOk)
|
|
apply (clarsimp simp: archinv_relation_def page_invocation_map_def)
|
|
\<comment> \<open>PageGetAddress\<close>
|
|
apply (cases "invocation_type l = ArchInvocationLabel RISCVPageGetAddress")
|
|
apply simp
|
|
apply (rule corres_returnOk)
|
|
apply (clarsimp simp: archinv_relation_def page_invocation_map_def)
|
|
by (clarsimp split: invocation_label.splits arch_invocation_label.splits split del: if_split)
|
|
|
|
lemma VMReadWrite_vmrights_map[simp]: "vmrights_map vm_read_write = VMReadWrite"
|
|
by (simp add: vmrights_map_def vm_read_write_def)
|
|
|
|
lemma gets_vspace_for_asid_is_catch:
|
|
"gets (vspace_for_asid a) = ((liftME Some (find_vspace_for_asid a)) <catch> const (return None))"
|
|
apply (simp add: find_vspace_for_asid_def liftME_def liftE_bindE catch_def)
|
|
apply (rule ext)
|
|
apply (clarsimp simp: bind_def simpler_gets_def throw_opt_def bindE_def throwError_def return_def
|
|
returnOk_def
|
|
split: option.splits)
|
|
done
|
|
|
|
lemma maybeVSpaceForASID_corres:
|
|
"a' = ucast a \<Longrightarrow>
|
|
corres (=)
|
|
(valid_vspace_objs and valid_asid_table and pspace_aligned and pspace_distinct
|
|
and K (0 < a))
|
|
no_0_obj'
|
|
(gets (vspace_for_asid a)) (maybeVSpaceForASID a')"
|
|
apply (simp add: maybeVSpaceForASID_def gets_vspace_for_asid_is_catch)
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_split_catch)
|
|
apply (simp add: o_def)
|
|
apply (rule findVSpaceForASID_corres, simp)
|
|
apply (rule corres_trivial, simp)
|
|
apply wpsimp+
|
|
done
|
|
|
|
crunches isFinalCapability
|
|
for no_0_obj'[wp]: no_0_obj'
|
|
(simp: crunch_simps wp: crunch_wps)
|
|
|
|
lemma decodeX64PageTableInvocation_corres:
|
|
"\<lbrakk>cap = arch_cap.PageTableCap p opt; acap_relation cap cap';
|
|
list_all2 cap_relation (map fst excaps) (map fst excaps');
|
|
list_all2 (\<lambda>s s'. s' = cte_map s) (map snd excaps) (map snd excaps') \<rbrakk> \<Longrightarrow>
|
|
corres (ser \<oplus> archinv_relation)
|
|
(invs and valid_cap (cap.ArchObjectCap cap) and
|
|
cte_wp_at ((=) (cap.ArchObjectCap cap)) slot and
|
|
(\<lambda>s. \<forall>x\<in>set excaps. s \<turnstile> fst x \<and> cte_wp_at (\<lambda>_. True) (snd x) s))
|
|
(invs' and valid_cap' (capability.ArchObjectCap cap') and
|
|
(\<lambda>s. \<forall>x\<in>set excaps'. valid_cap' (fst x) s \<and> cte_wp_at' (\<lambda>_. True) (snd x) s))
|
|
(decode_page_table_invocation l args slot cap excaps)
|
|
(decodeRISCVPageTableInvocation l args (cte_map slot) cap' excaps')"
|
|
supply option.case_cong[cong]
|
|
apply (simp add: decode_page_table_invocation_def decodeRISCVPageTableInvocation_def Let_def
|
|
isCap_simps
|
|
split del: if_split)
|
|
apply (cases "invocation_type l = ArchInvocationLabel RISCVPageTableMap")
|
|
apply (simp add: decode_pt_inv_map_def
|
|
split: invocation_label.split arch_invocation_label.splits split del: if_split)
|
|
apply (simp split: list.split, intro conjI impI allI, simp_all)[1]
|
|
apply (clarsimp simp: neq_Nil_conv Let_def decodeRISCVPageTableInvocationMap_def)
|
|
apply (rule whenE_throwError_corres_initial; (fastforce simp: mdata_map_def)?)
|
|
apply (simp split: cap.split arch_cap.split option.split,
|
|
intro conjI allI impI, simp_all)[1]
|
|
apply (rule whenE_throwError_corres_initial; simp?)
|
|
apply (simp add: user_vtop_def pptrUserTop_def)
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_splitEE)
|
|
apply (rule corres_lookup_error)
|
|
apply (rule findVSpaceForASID_corres[OF refl])
|
|
apply (rule whenE_throwError_corres, simp, simp)
|
|
apply (rule corres_splitEE)
|
|
apply (simp)
|
|
apply (rule lookupPTSlot_corres)
|
|
apply clarsimp
|
|
apply (rule corres_splitEE)
|
|
apply simp
|
|
apply datatype_schem
|
|
apply (rule getObject_PTE_corres)
|
|
apply (simp add: unlessE_whenE)
|
|
apply (rule corres_splitEE[where r'=dc])
|
|
apply (rule corres_whenE)
|
|
apply clarsimp
|
|
apply (case_tac old_pte; simp)
|
|
apply (rule corres_trivial, simp)
|
|
apply simp
|
|
apply (rule corres_trivial, rule corres_returnOk)
|
|
apply (clarsimp simp: archinv_relation_def page_table_invocation_map_def
|
|
ucast_ucast_mask)
|
|
apply (subst word_le_mask_eq; simp?)
|
|
apply (rule leq_mask_shift)
|
|
apply (simp add: bit_simps le_mask_high_bits word_size)
|
|
apply ((clarsimp cong: if_cong
|
|
| wp whenE_wp hoare_vcg_all_lift_R getPTE_wp get_pte_wp
|
|
| wp (once) hoare_drop_imps)+)
|
|
apply (clarsimp simp: invs_vspace_objs invs_valid_asid_table invs_psp_aligned invs_distinct)
|
|
apply (clarsimp simp: valid_cap_def wellformed_mapdata_def not_le below_user_vtop_in_user_region)
|
|
apply (rule conjI)
|
|
apply (rule exI)+
|
|
apply (rule conjI, erule vspace_for_asid_vs_lookup, simp)
|
|
apply clarsimp
|
|
apply (drule (1) pt_lookup_slot_vs_lookup_slotI, clarsimp)
|
|
apply (erule vs_lookup_slot_pte_at; simp add: below_user_vtop_in_user_region)
|
|
apply fastforce
|
|
\<comment> \<open>PageTableUnmap\<close>
|
|
apply (clarsimp simp: isCap_simps)+
|
|
apply (cases "invocation_type l = ArchInvocationLabel RISCVPageTableUnmap")
|
|
apply (clarsimp simp: unlessE_whenE liftE_bindE)
|
|
apply (rule stronger_corres_guard_imp)
|
|
apply (rule corres_symb_exec_r_conj)
|
|
apply (rule_tac F="isArchCap isPageTableCap (cteCap cteVal)"
|
|
in corres_gen_asm2)
|
|
apply (rule corres_split[OF isFinalCapability_corres[where ptr=slot]])
|
|
apply (drule mp)
|
|
apply (clarsimp simp: isCap_simps final_matters'_def)
|
|
apply (rule whenE_throwError_corres; simp)
|
|
apply (rule option_corres)
|
|
apply (cases opt; simp add: mdata_map_def)
|
|
apply (rule corres_trivial, simp add: returnOk_def archinv_relation_def
|
|
page_table_invocation_map_def)
|
|
apply (cases opt, clarsimp simp: mdata_map_def)
|
|
apply (clarsimp simp: bind_bindE_assoc)
|
|
apply (rule corres_split)
|
|
apply datatype_schem
|
|
apply (rule maybeVSpaceForASID_corres, simp)
|
|
apply (rule whenE_throwError_corres; simp)
|
|
apply (rule corres_trivial, simp add: returnOk_def archinv_relation_def
|
|
page_table_invocation_map_def)
|
|
apply (simp|wp)+
|
|
apply (cases opt; simp add: mdata_map_def)
|
|
apply (simp | wp getCTE_wp' | wp (once) hoare_drop_imps)+
|
|
apply (clarsimp)
|
|
apply (rule no_fail_pre, rule no_fail_getCTE)
|
|
apply (erule conjunct2)
|
|
apply (clarsimp simp: cte_wp_at_caps_of_state invs_vspace_objs
|
|
invs_valid_asid_table invs_psp_aligned invs_distinct)
|
|
apply (clarsimp simp: valid_cap_def wellformed_mapdata_def)
|
|
apply (clarsimp simp: cte_wp_at_ctes_of cap_rights_update_def acap_rights_update_def
|
|
cte_wp_at_caps_of_state)
|
|
apply (drule pspace_relation_ctes_ofI[OF _ caps_of_state_cteD, rotated],
|
|
erule invs_pspace_aligned', clarsimp+)
|
|
apply (simp add: isCap_simps invs_no_0_obj')
|
|
apply (simp add: isCap_simps split del: if_split)
|
|
by (clarsimp split: invocation_label.splits arch_invocation_label.splits)
|
|
|
|
|
|
lemma arch_decodeInvocation_corres:
|
|
notes check_vp_inv[wp del] check_vp_wpR[wp]
|
|
(* FIXME: check_vp_inv shadowed check_vp_wpR. Instead,
|
|
check_vp_wpR should probably be generalised to replace check_vp_inv. *)
|
|
shows
|
|
"\<lbrakk> acap_relation arch_cap arch_cap';
|
|
list_all2 cap_relation (map fst excaps) (map fst excaps');
|
|
list_all2 (\<lambda>s s'. s' = cte_map s) (map snd excaps) (map snd excaps') \<rbrakk> \<Longrightarrow>
|
|
corres
|
|
(ser \<oplus> archinv_relation)
|
|
(invs and valid_cap (cap.ArchObjectCap arch_cap) and
|
|
cte_wp_at ((=) (cap.ArchObjectCap arch_cap)) slot and
|
|
(\<lambda>s. \<forall>x\<in>set excaps. s \<turnstile> fst x \<and> cte_at (snd x) s))
|
|
(invs' and valid_cap' (capability.ArchObjectCap arch_cap') and
|
|
(\<lambda>s. \<forall>x\<in>set excaps'. s \<turnstile>' fst x \<and> cte_at' (snd x) s))
|
|
(arch_decode_invocation (mi_label mi) args (to_bl cptr') slot
|
|
arch_cap excaps)
|
|
(Arch.decodeInvocation (mi_label mi) args cptr'
|
|
(cte_map slot) arch_cap' excaps')"
|
|
apply (simp add: arch_decode_invocation_def
|
|
RISCV64_H.decodeInvocation_def
|
|
decodeRISCVMMUInvocation_def
|
|
split del: if_split)
|
|
apply (cases arch_cap)
|
|
\<comment> \<open>ASIDPoolCap\<close>
|
|
apply (simp add: isCap_simps decodeRISCVMMUInvocation_def decode_asid_pool_invocation_def
|
|
decodeRISCVASIDPoolInvocation_def Let_def
|
|
split del: if_split)
|
|
apply (cases "invocation_type (mi_label mi) \<noteq> ArchInvocationLabel RISCVASIDPoolAssign")
|
|
apply (simp split: invocation_label.split arch_invocation_label.split)
|
|
apply (rename_tac word1 word2)
|
|
apply (cases "excaps", simp)
|
|
apply (cases "excaps'", simp)
|
|
apply clarsimp
|
|
apply (case_tac a, simp_all)[1]
|
|
apply (rename_tac arch_capa)
|
|
apply (case_tac arch_capa, simp_all)[1]
|
|
apply (rename_tac word3 option)
|
|
apply (case_tac option, simp_all add: mdata_map_def)[1]
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_splitEE)
|
|
apply (rule corres_trivial [where r="ser \<oplus> (\<lambda>p p'. p = p' o ucast)"])
|
|
apply (clarsimp simp: state_relation_def arch_state_relation_def)
|
|
apply (rule whenE_throwError_corres, simp)
|
|
apply (simp add: lookup_failure_map_def)
|
|
apply simp
|
|
apply (rule_tac P="\<lambda>s. (asid_table (asid_high_bits_of word2) = Some word1 \<longrightarrow> asid_pool_at word1 s) \<and>
|
|
pspace_aligned s \<and> pspace_distinct s \<and> is_aligned word2 asid_low_bits" and
|
|
P'="\<top>" in corres_inst)
|
|
apply (simp add: liftME_return)
|
|
apply (rule whenE_throwError_corres_initial, simp)
|
|
apply auto[1]
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_splitEE)
|
|
apply simp
|
|
apply (rule get_asid_pool_corres_inv'[OF refl])
|
|
apply (simp add: bindE_assoc)
|
|
apply (rule_tac F="is_aligned word2 asid_low_bits" in corres_gen_asm)
|
|
apply (rule corres_splitEE)
|
|
apply (rule corres_whenE)
|
|
apply (subst conj_assoc [symmetric])
|
|
apply (subst assocs_empty_dom_comp [symmetric])
|
|
apply (erule dom_ucast_eq)
|
|
apply (rule corres_trivial)
|
|
apply simp
|
|
apply simp
|
|
apply (rule_tac F="- dom pool \<inter> {x. ucast x + word2 \<noteq> 0} \<noteq> {}" in corres_gen_asm)
|
|
apply (frule dom_hd_assocsD)
|
|
apply (simp add: select_ext_fap[simplified free_asid_pool_select_def]
|
|
free_asid_pool_select_def)
|
|
apply (simp add: returnOk_liftE[symmetric])
|
|
apply (rule corres_returnOk)
|
|
apply (simp add: archinv_relation_def asid_pool_invocation_map_def)
|
|
apply (rule hoare_pre, wp whenE_wp)
|
|
apply (clarsimp simp: ucast_fst_hd_assocs)
|
|
apply (wp hoareE_TrueI whenE_wp getASID_wp | simp)+
|
|
apply ((clarsimp simp: p2_low_bits_max | rule TrueI impI)+)[2]
|
|
apply (wp whenE_wp getASID_wp)+
|
|
apply (auto simp: valid_cap_def)[1]
|
|
apply auto[1]
|
|
\<comment> \<open>ASIDControlCap\<close>
|
|
apply (simp add: isCap_simps decodeRISCVMMUInvocation_def decode_asid_control_invocation_def
|
|
Let_def decodeRISCVASIDControlInvocation_def
|
|
split del: if_split)
|
|
apply (cases "invocation_type (mi_label mi) \<noteq> ArchInvocationLabel RISCVASIDControlMakePool")
|
|
apply (simp split: invocation_label.split arch_invocation_label.split)
|
|
apply (subgoal_tac "length excaps' = length excaps")
|
|
prefer 2
|
|
apply (simp add: list_all2_iff)
|
|
apply (cases args, simp)
|
|
apply (rename_tac a0 as)
|
|
apply (case_tac as, simp)
|
|
apply (rename_tac a1 as')
|
|
apply (cases excaps, simp)
|
|
apply (rename_tac excap0 exs)
|
|
apply (case_tac exs)
|
|
apply (auto split: list.split)[1]
|
|
apply (rename_tac excap1 exss)
|
|
apply (case_tac excap0)
|
|
apply (rename_tac c0 slot0)
|
|
apply (case_tac excap1)
|
|
apply (rename_tac c1 slot1)
|
|
apply (clarsimp simp: Let_def split del: if_split)
|
|
apply (cases excaps', simp)
|
|
apply (case_tac list, simp)
|
|
apply (rename_tac c0' exs' c1' exss')
|
|
apply (clarsimp split del: if_split)
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_splitEE[where r'="\<lambda>p p'. p = p' o ucast"])
|
|
apply (rule corres_trivial)
|
|
apply (clarsimp simp: state_relation_def arch_state_relation_def)
|
|
apply (rule corres_splitEE)
|
|
apply (rule corres_whenE)
|
|
apply (subst assocs_empty_dom_comp [symmetric])
|
|
apply (simp add: o_def)
|
|
apply (rule dom_ucast_eq_8)
|
|
apply (rule corres_trivial, simp, simp)
|
|
apply (simp split del: if_split)
|
|
apply (rule_tac F="- dom (asidTable \<circ> ucast) \<inter> {x. x \<le> 2 ^ asid_high_bits - 1} \<noteq> {}" in corres_gen_asm)
|
|
apply (drule dom_hd_assocsD)
|
|
apply (simp add: select_ext_fa[simplified free_asid_select_def]
|
|
free_asid_select_def o_def returnOk_liftE[symmetric] split del: if_split)
|
|
apply (thin_tac "fst a \<notin> b \<and> P" for a b P)
|
|
apply (case_tac "isUntypedCap a \<and> capBlockSize a = objBits (makeObject::asidpool) \<and> \<not> capIsDevice a")
|
|
prefer 2
|
|
apply (rule corres_guard_imp)
|
|
apply (rule corres_trivial)
|
|
apply (case_tac ad; simp add: isCap_simps split del: if_split)
|
|
apply (case_tac x21; simp split del: if_split)
|
|
apply (clarsimp simp: objBits_simps split del: if_split)
|
|
apply clarsimp
|
|
apply (rule TrueI)+
|
|
apply (clarsimp simp: isCap_simps cap_relation_Untyped_eq lookupTargetSlot_def
|
|
objBits_simps bindE_assoc split_def)
|
|
apply (rule corres_splitEE)
|
|
apply (rule ensureNoChildren_corres, rule refl)
|
|
apply (rule corres_splitEE)
|
|
apply (erule lookupSlotForCNodeOp_corres, rule refl)
|
|
apply (rule corres_splitEE)
|
|
apply (rule ensureEmptySlot_corres)
|
|
apply clarsimp
|
|
apply (rule corres_returnOk[where P="\<top>"])
|
|
apply (clarsimp simp add: archinv_relation_def asid_ci_map_def split_def)
|
|
apply (clarsimp simp add: ucast_assocs[unfolded o_def] split_def
|
|
filter_map asid_high_bits_def)
|
|
apply (simp add: ord_le_eq_trans [OF word_n1_ge])
|
|
apply (wp hoare_drop_imps)+
|
|
apply (simp add: o_def validE_R_def)
|
|
apply (fastforce simp: asid_high_bits_def)
|
|
apply clarsimp
|
|
apply (simp add: null_def split_def asid_high_bits_def word_le_make_less)
|
|
apply (subst hd_map, assumption)
|
|
(* need abstract guard to show list nonempty *)
|
|
apply (simp add: word_le_make_less)
|
|
apply (simp add: ucast_ucast_mask2 is_down)
|
|
apply (frule hd_in_set)
|
|
apply clarsimp
|
|
apply (prop_tac "\<forall>x::machine_word. x < 2^asid_high_bits \<longrightarrow> x && mask asid_high_bits = x")
|
|
apply (clarsimp simp: and_mask_eq_iff_le_mask le_mask_iff_lt_2n[THEN iffD1] asid_high_bits_def)
|
|
apply (simp add: asid_high_bits_def)
|
|
apply (erule allE, erule (1) impE)
|
|
apply (simp add: ucast_shiftl)
|
|
apply (subst ucast_ucast_len)
|
|
apply (drule hd_in_set)
|
|
apply (rule shiftl_less_t2n; simp add: asid_low_bits_def)
|
|
apply (fastforce)
|
|
|
|
\<comment> \<open>PageCap\<close>
|
|
apply (rename_tac word cap_rights vmpage_size option)
|
|
apply (simp add: isCap_simps decodeRISCVMMUInvocation_def Let_def split del: if_split)
|
|
apply (rule decodeX64FrameInvocation_corres; simp)
|
|
|
|
\<comment> \<open>PageTableCap\<close>
|
|
apply (simp add: isCap_simps decodeRISCVMMUInvocation_def Let_def split del: if_split)
|
|
apply (rule decodeX64PageTableInvocation_corres; simp)
|
|
done
|
|
|
|
|
|
lemma arch_performInvocation_corres:
|
|
"archinv_relation ai ai' \<Longrightarrow>
|
|
corres (dc \<oplus> (=))
|
|
(einvs and ct_active and valid_arch_inv ai)
|
|
(invs' and ct_active' and valid_arch_inv' ai')
|
|
(arch_perform_invocation ai) (Arch.performInvocation ai')"
|
|
apply (clarsimp simp: arch_perform_invocation_def
|
|
RISCV64_H.performInvocation_def
|
|
performRISCVMMUInvocation_def)
|
|
apply (clarsimp simp: archinv_relation_def)
|
|
apply (cases ai)
|
|
apply (clarsimp simp: archinv_relation_def performRISCVMMUInvocation_def)
|
|
apply (rule corres_guard_imp, rule corres_split_nor)
|
|
apply (rule performPageTableInvocation_corres; wpsimp)
|
|
apply (rule corres_trivial, simp)
|
|
apply wpsimp+
|
|
apply (fastforce simp: valid_arch_inv_def)
|
|
apply (fastforce simp: valid_arch_inv'_def)
|
|
apply (clarsimp simp: archinv_relation_def)
|
|
apply (rule corres_guard_imp)
|
|
apply (rule performPageInvocation_corres; wpsimp)
|
|
apply wpsimp+
|
|
apply (fastforce simp: valid_arch_inv_def)
|
|
apply (fastforce simp: valid_arch_inv'_def)
|
|
apply (clarsimp simp: archinv_relation_def)
|
|
apply (rule corres_guard_imp, rule corres_split_nor)
|
|
apply (rule performASIDControlInvocation_corres; wpsimp)
|
|
apply (rule corres_trivial, simp)
|
|
apply wpsimp+
|
|
apply (fastforce simp: valid_arch_inv_def)
|
|
apply (fastforce simp: valid_arch_inv'_def)
|
|
apply (clarsimp simp: archinv_relation_def)
|
|
apply (rule corres_guard_imp, rule corres_split_nor)
|
|
apply (rule performASIDPoolInvocation_corres; wpsimp)
|
|
apply (rule corres_trivial, simp)
|
|
apply wpsimp+
|
|
apply (fastforce simp: valid_arch_inv_def)
|
|
apply (fastforce simp: valid_arch_inv'_def)
|
|
done
|
|
|
|
lemma asid_pool_typ_at_ext':
|
|
"asid_pool_at' = obj_at' (\<top>::asidpool \<Rightarrow> bool)"
|
|
apply (rule ext)+
|
|
apply (simp add: typ_at_to_obj_at_arches)
|
|
done
|
|
|
|
lemma st_tcb_strg':
|
|
"st_tcb_at' P p s \<longrightarrow> tcb_at' p s"
|
|
by (auto simp: pred_tcb_at')
|
|
|
|
lemma performASIDControlInvocation_tcb_at':
|
|
"\<lbrace>st_tcb_at' active' p and invs' and ct_active' and valid_aci' aci\<rbrace>
|
|
performASIDControlInvocation aci
|
|
\<lbrace>\<lambda>y. tcb_at' p\<rbrace>"
|
|
apply (rule hoare_name_pre_state)
|
|
apply (clarsimp simp: performASIDControlInvocation_def split: asidcontrol_invocation.splits)
|
|
apply (clarsimp simp: valid_aci'_def cte_wp_at_ctes_of cong: conj_cong)
|
|
apply (wp hoare_weak_lift_imp |simp add:placeNewObject_def2)+
|
|
apply (wp createObjects_orig_obj_at2' updateFreeIndex_pspace_no_overlap' getSlotCap_wp hoare_weak_lift_imp)+
|
|
apply (clarsimp simp: projectKO_opts_defs)
|
|
apply (strengthen st_tcb_strg' [where P=\<top>])
|
|
apply (wp deleteObjects_invs_derivatives[where p="makePoolParent aci"]
|
|
hoare_vcg_ex_lift deleteObjects_cte_wp_at'[where d=False]
|
|
deleteObjects_st_tcb_at'[where p="makePoolParent aci"] hoare_weak_lift_imp
|
|
updateFreeIndex_pspace_no_overlap' deleteObject_no_overlap[where d=False])+
|
|
apply (case_tac ctea)
|
|
apply (clarsimp)
|
|
apply (frule ctes_of_valid_cap')
|
|
apply (simp add:invs_valid_objs')+
|
|
apply (clarsimp simp:valid_cap'_def capAligned_def cte_wp_at_ctes_of)
|
|
apply (strengthen refl order_refl
|
|
pred_tcb'_weakenE[mk_strg I E])
|
|
apply (clarsimp simp: conj_comms invs_valid_pspace' isCap_simps
|
|
descendants_range'_def2 empty_descendants_range_in')
|
|
apply (frule ctes_of_valid', clarsimp, simp,
|
|
drule capFreeIndex_update_valid_cap'[where fb="2 ^ pageBits", rotated -1],
|
|
simp_all)
|
|
apply (simp add: pageBits_def is_aligned_def untypedBits_defs)
|
|
apply (simp add: valid_cap_simps' range_cover_def objBits_simps untypedBits_defs
|
|
capAligned_def unat_eq_0 and_mask_eq_iff_shiftr_0[symmetric]
|
|
word_bw_assocs)
|
|
apply clarsimp
|
|
apply (drule(1) cte_cap_in_untyped_range,
|
|
fastforce simp add: cte_wp_at_ctes_of, assumption, simp_all)
|
|
apply (clarsimp simp: invs'_def valid_state'_def if_unsafe_then_cap'_def cte_wp_at_ctes_of)
|
|
apply clarsimp
|
|
done
|
|
|
|
lemma invokeArch_tcb_at':
|
|
"\<lbrace>invs' and valid_arch_inv' ai and ct_active' and st_tcb_at' active' p\<rbrace>
|
|
Arch.performInvocation ai
|
|
\<lbrace>\<lambda>rv. tcb_at' p\<rbrace>"
|
|
apply (simp add: RISCV64_H.performInvocation_def performRISCVMMUInvocation_def)
|
|
apply (wpsimp simp: performRISCVMMUInvocation_def pred_tcb_at' valid_arch_inv'_def
|
|
wp: performASIDControlInvocation_tcb_at')
|
|
done
|
|
|
|
crunch pspace_no_overlap'[wp]: setThreadState "pspace_no_overlap' w s"
|
|
(simp: unless_def)
|
|
|
|
lemma sts_cte_cap_to'[wp]:
|
|
"\<lbrace>ex_cte_cap_to' p\<rbrace> setThreadState st t \<lbrace>\<lambda>rv. ex_cte_cap_to' p\<rbrace>"
|
|
by (wp ex_cte_cap_to'_pres)
|
|
|
|
|
|
lemma sts_valid_arch_inv':
|
|
"\<lbrace>valid_arch_inv' ai\<rbrace> setThreadState st t \<lbrace>\<lambda>rv. valid_arch_inv' ai\<rbrace>"
|
|
apply (cases ai, simp_all add: valid_arch_inv'_def)
|
|
apply (clarsimp simp: valid_pti'_def split: page_table_invocation.splits)
|
|
apply (rule conjI|clarsimp|wpsimp)+
|
|
apply (rename_tac page_invocation)
|
|
apply (case_tac page_invocation, simp_all add: valid_page_inv'_def)[1]
|
|
apply (wp |simp)+
|
|
apply (clarsimp simp: valid_aci'_def split: asidcontrol_invocation.splits)
|
|
apply (clarsimp simp: cte_wp_at_ctes_of)
|
|
apply (rule hoare_pre, wp)
|
|
apply clarsimp
|
|
apply (clarsimp simp: valid_apinv'_def split: asidpool_invocation.splits)
|
|
apply (rule hoare_pre, wp)
|
|
apply simp
|
|
done
|
|
|
|
lemma inv_ASIDPool: "inv ASIDPool = (\<lambda>v. case v of ASIDPool a \<Rightarrow> a)"
|
|
apply (rule ext)
|
|
apply (case_tac v)
|
|
apply simp
|
|
apply (rule inv_f_f, rule inj_onI)
|
|
apply simp
|
|
done
|
|
|
|
lemma eq_arch_update':
|
|
"ArchObjectCap cp = cteCap cte \<Longrightarrow> is_arch_update' (ArchObjectCap cp) cte"
|
|
by (clarsimp simp: is_arch_update'_def isCap_simps)
|
|
|
|
lemma decode_page_inv_wf[wp]:
|
|
"cap = (arch_capability.FrameCap word vmrights vmpage_size d option) \<Longrightarrow>
|
|
\<lbrace>invs' and valid_cap' (capability.ArchObjectCap cap ) and
|
|
cte_wp_at' ((=) (capability.ArchObjectCap cap) \<circ> cteCap) slot and
|
|
(\<lambda>s. \<forall>x\<in>set excaps. cte_wp_at' ((=) (fst x) \<circ> cteCap) (snd x) s) and
|
|
sch_act_simple\<rbrace>
|
|
decodeRISCVFrameInvocation label args slot cap excaps
|
|
\<lbrace>valid_arch_inv'\<rbrace>, -"
|
|
apply (simp add: decodeRISCVFrameInvocation_def Let_def isCap_simps
|
|
cong: if_cong split del: if_split)
|
|
apply (wpsimp simp: decodeRISCVFrameInvocationMap_def valid_arch_inv'_def valid_page_inv'_def
|
|
checkSlot_def if_apply_def2
|
|
wp: getPTE_wp hoare_vcg_all_lift lookupPTSlot_inv
|
|
| wp (once) hoare_drop_imps)+
|
|
apply ((rule conjI; clarsimp)+;
|
|
(clarsimp simp: cte_wp_at_ctes_of,
|
|
(drule_tac t="cteCap _" in sym)+,
|
|
(drule ctes_of_valid', fastforce)+,
|
|
clarsimp simp: valid_cap'_def ptBits_def pageBits_def
|
|
is_arch_update'_def isCap_simps capAligned_def wellformed_mapdata'_def
|
|
vmsz_aligned_user_region not_le))
|
|
done
|
|
|
|
lemma below_pptrUserTop_in_user_region:
|
|
"p < pptrUserTop \<Longrightarrow> p \<in> user_region"
|
|
apply (simp add: user_region_def canonical_user_def pptrUserTop_def)
|
|
apply (simp add: bit_simps is_aligned_mask canonical_bit_def)
|
|
by (word_bitwise, clarsimp simp: word_size)
|
|
|
|
lemma decode_page_table_inv_wf[wp]:
|
|
"arch_cap = PageTableCap word option \<Longrightarrow>
|
|
\<lbrace>invs' and valid_cap' (capability.ArchObjectCap arch_cap) and
|
|
cte_wp_at' ((=) (capability.ArchObjectCap arch_cap) \<circ> cteCap) slot and
|
|
(\<lambda>s. \<forall>x\<in>set excaps. cte_wp_at' ((=) (fst x) \<circ> cteCap) (snd x) s) and
|
|
sch_act_simple\<rbrace>
|
|
decodeRISCVPageTableInvocation label args slot arch_cap excaps
|
|
\<lbrace>valid_arch_inv'\<rbrace>, - "
|
|
supply if_cong[cong] if_split [split del]
|
|
apply (clarsimp simp: decodeRISCVPageTableInvocation_def Let_def isCap_simps)
|
|
apply (wpsimp simp: decodeRISCVPageTableInvocationMap_def valid_arch_inv'_def valid_pti'_def
|
|
maybeVSpaceForASID_def o_def if_apply_def2
|
|
wp: getPTE_wp hoare_vcg_all_lift hoare_vcg_const_imp_lift
|
|
lookupPTSlot_inv isFinalCapability_inv
|
|
| wp (once) hoare_drop_imps)+
|
|
apply (clarsimp simp: not_le isCap_simps cte_wp_at_ctes_of eq_arch_update')
|
|
apply (drule_tac t="cteCap cte" in sym)
|
|
apply (simp add: valid_cap'_def capAligned_def)
|
|
apply (clarsimp simp: is_arch_update'_def isCap_simps
|
|
split: if_split)
|
|
apply (rule conjI; clarsimp)
|
|
apply (drule_tac t="cteCap ctea" in sym)
|
|
apply (drule ctes_of_valid', fastforce)+
|
|
apply (clarsimp simp: valid_cap'_def)
|
|
apply (simp add: wellformed_mapdata'_def below_pptrUserTop_in_user_region neg_mask_user_region)
|
|
done
|
|
|
|
lemma capMaster_isPageTableCap:
|
|
"capMasterCap cap' = capMasterCap cap \<Longrightarrow>
|
|
isArchCap isPageTableCap cap' = isArchCap isPageTableCap cap"
|
|
by (simp add: capMasterCap_def isArchCap_def isPageTableCap_def
|
|
split: capability.splits arch_capability.splits)
|
|
|
|
lemma arch_decodeInvocation_wf[wp]:
|
|
shows "\<lbrace>invs' and valid_cap' (ArchObjectCap arch_cap) and
|
|
cte_wp_at' ((=) (ArchObjectCap arch_cap) o cteCap) slot and
|
|
(\<lambda>s. \<forall>x \<in> set excaps. cte_wp_at' ((=) (fst x) o cteCap) (snd x) s) and
|
|
(\<lambda>s. \<forall>x \<in> set excaps. \<forall>r \<in> cte_refs' (fst x) (irq_node' s). ex_cte_cap_to' r s) and
|
|
(\<lambda>s. \<forall>x \<in> set excaps. s \<turnstile>' fst x) and
|
|
sch_act_simple\<rbrace>
|
|
Arch.decodeInvocation label args cap_index slot arch_cap excaps
|
|
\<lbrace>valid_arch_inv'\<rbrace>,-"
|
|
apply (cases arch_cap)
|
|
apply (simp add: decodeRISCVMMUInvocation_def RISCV64_H.decodeInvocation_def
|
|
Let_def split_def isCap_simps decodeRISCVASIDControlInvocation_def
|
|
cong: if_cong invocation_label.case_cong arch_invocation_label.case_cong list.case_cong prod.case_cong
|
|
split del: if_split)
|
|
apply (rule hoare_pre)
|
|
apply ((wp whenE_throwError_wp ensureEmptySlot_stronger|
|
|
wpc|
|
|
simp add: valid_arch_inv'_def valid_aci'_def is_aligned_shiftl_self
|
|
split del: if_split)+)[1]
|
|
apply (rule_tac Q'=
|
|
"\<lambda>rv. K (fst (hd [p\<leftarrow>assocs asidTable . fst p \<le> 2 ^ asid_high_bits - 1 \<and> snd p = None])
|
|
<< asid_low_bits \<le> 2 ^ asid_bits - 1) and
|
|
real_cte_at' rv and
|
|
ex_cte_cap_to' rv and
|
|
cte_wp_at' (\<lambda>cte. \<exists>idx. cteCap cte = (UntypedCap False frame pageBits idx)) (snd (excaps!0)) and
|
|
sch_act_simple and
|
|
(\<lambda>s. descendants_of' (snd (excaps!0)) (ctes_of s) = {}) "
|
|
in hoare_post_imp_R)
|
|
apply (simp add: lookupTargetSlot_def)
|
|
apply wp
|
|
apply (clarsimp simp: cte_wp_at_ctes_of asid_wf_def mask_def)
|
|
apply (simp split del: if_split)
|
|
apply (wp ensureNoChildren_sp whenE_throwError_wp|wpc)+
|
|
apply clarsimp
|
|
apply (rule conjI)
|
|
apply (clarsimp simp: null_def neq_Nil_conv)
|
|
apply (drule filter_eq_ConsD)
|
|
apply clarsimp
|
|
apply (rule shiftl_less_t2n)
|
|
apply (simp add: asid_bits_def asid_low_bits_def asid_high_bits_def)
|
|
apply unat_arith
|
|
apply (simp add: asid_bits_def)
|
|
apply clarsimp
|
|
apply (rule conjI, fastforce)
|
|
apply (clarsimp simp: cte_wp_at_ctes_of objBits_simps)
|
|
|
|
\<comment> \<open>ASIDPool cap\<close>
|
|
apply (simp add: decodeRISCVMMUInvocation_def RISCV64_H.decodeInvocation_def
|
|
Let_def split_def isCap_simps decodeRISCVASIDPoolInvocation_def
|
|
cong: if_cong split del: if_split)
|
|
apply (wpsimp simp: valid_arch_inv'_def valid_apinv'_def wp: getASID_wp cong: if_cong)
|
|
apply (clarsimp simp: word_neq_0_conv valid_cap'_def valid_arch_inv'_def valid_apinv'_def)
|
|
apply (rule conjI)
|
|
apply (erule cte_wp_at_weakenE')
|
|
apply (simp, drule_tac t="cteCap c" in sym, simp add: isCap_simps)
|
|
apply (subst (asm) conj_assoc [symmetric])
|
|
apply (subst (asm) assocs_empty_dom_comp [symmetric])
|
|
apply (drule dom_hd_assocsD)
|
|
apply (simp add: capAligned_def asid_wf_def mask_def)
|
|
apply (elim conjE)
|
|
apply (subst field_simps, erule is_aligned_add_less_t2n)
|
|
apply assumption
|
|
apply (simp add: asid_low_bits_def asid_bits_def)
|
|
apply assumption
|
|
|
|
\<comment> \<open>PageCap\<close>
|
|
apply (simp add: decodeRISCVMMUInvocation_def isCap_simps RISCV64_H.decodeInvocation_def
|
|
cong: if_cong split del: if_split)
|
|
apply (wp, simp+)
|
|
|
|
\<comment> \<open>PageTableCap\<close>
|
|
apply (simp add: decodeRISCVMMUInvocation_def isCap_simps RISCV64_H.decodeInvocation_def
|
|
cong: if_cong split del: if_split)
|
|
apply (wpsimp, simp+)
|
|
done
|
|
|
|
crunch nosch[wp]: setMRs "\<lambda>s. P (ksSchedulerAction s)"
|
|
(ignore: getRestartPC setRegister transferCapsToSlots
|
|
wp: hoare_drop_imps hoare_vcg_split_case_option
|
|
mapM_wp'
|
|
simp: split_def zipWithM_x_mapM)
|
|
|
|
crunch nosch [wp]: performRISCVMMUInvocation "\<lambda>s. P (ksSchedulerAction s)"
|
|
(simp: crunch_simps
|
|
wp: crunch_wps getObject_cte_inv getASID_wp)
|
|
|
|
lemmas setObject_cte_st_tcb_at' [wp] = setCTE_pred_tcb_at' [unfolded setCTE_def]
|
|
|
|
crunch st_tcb_at': performPageTableInvocation,
|
|
performPageInvocation,
|
|
performASIDPoolInvocation "st_tcb_at' P t"
|
|
(wp: crunch_wps getASID_wp getObject_cte_inv simp: crunch_simps pteAtIndex_def)
|
|
|
|
lemma performASIDControlInvocation_st_tcb_at':
|
|
"\<lbrace>st_tcb_at' (P and (\<noteq>) Inactive and (\<noteq>) IdleThreadState) t and
|
|
valid_aci' aci and invs' and ct_active'\<rbrace>
|
|
performASIDControlInvocation aci
|
|
\<lbrace>\<lambda>y. st_tcb_at' P t\<rbrace>"
|
|
apply (rule hoare_name_pre_state)
|
|
apply (clarsimp simp: performASIDControlInvocation_def split: asidcontrol_invocation.splits)
|
|
apply (clarsimp simp: valid_aci'_def cte_wp_at_ctes_of cong: conj_cong)
|
|
apply (rule hoare_pre)
|
|
apply (wp createObjects_orig_obj_at'[where P="P \<circ> tcbState", folded st_tcb_at'_def]
|
|
updateFreeIndex_pspace_no_overlap' getSlotCap_wp
|
|
hoare_vcg_ex_lift
|
|
deleteObjects_cte_wp_at' deleteObjects_invs_derivatives
|
|
deleteObjects_st_tcb_at'
|
|
hoare_weak_lift_imp
|
|
| simp add: placeNewObject_def2)+
|
|
apply (case_tac ctea)
|
|
apply (clarsimp)
|
|
apply (frule ctes_of_valid_cap')
|
|
apply (simp add:invs_valid_objs')+
|
|
apply (clarsimp simp:valid_cap'_def capAligned_def cte_wp_at_ctes_of)
|
|
apply (rule conjI)
|
|
apply clarsimp
|
|
apply (drule (1) cte_cap_in_untyped_range)
|
|
apply (fastforce simp add: cte_wp_at_ctes_of)
|
|
apply assumption+
|
|
subgoal by (clarsimp simp: invs'_def valid_state'_def if_unsafe_then_cap'_def cte_wp_at_ctes_of)
|
|
subgoal by fastforce
|
|
apply simp
|
|
apply (rule conjI,assumption)
|
|
apply (clarsimp simp:invs_valid_pspace' objBits_simps range_cover_full descendants_range'_def2
|
|
isCap_simps)
|
|
apply (intro conjI)
|
|
apply (fastforce simp:empty_descendants_range_in')+
|
|
apply clarsimp
|
|
apply (drule (1) cte_cap_in_untyped_range)
|
|
apply (fastforce simp add: cte_wp_at_ctes_of)
|
|
apply assumption+
|
|
apply (clarsimp simp: invs'_def valid_state'_def if_unsafe_then_cap'_def cte_wp_at_ctes_of)
|
|
apply fastforce
|
|
apply simp
|
|
apply auto
|
|
done
|
|
|
|
lemmas arch_finalise_cap_aligned' = ArchRetypeDecls_H_RISCV64_H_finaliseCap_aligned'
|
|
|
|
lemmas arch_finalise_cap_distinct' = ArchRetypeDecls_H_RISCV64_H_finaliseCap_distinct'
|
|
|
|
crunch st_tcb_at' [wp]: "Arch.finaliseCap" "st_tcb_at' P t"
|
|
(wp: crunch_wps getASID_wp simp: crunch_simps)
|
|
|
|
lemma invs_asid_table_strengthen':
|
|
"invs' s \<and> asid_pool_at' ap s \<and> asid \<le> 2 ^ asid_high_bits - 1 \<longrightarrow>
|
|
invs' (s\<lparr>ksArchState :=
|
|
riscvKSASIDTable_update (\<lambda>_. ((riscvKSASIDTable \<circ> ksArchState) s)(asid \<mapsto> ap)) (ksArchState s)\<rparr>)"
|
|
apply (clarsimp simp: invs'_def valid_state'_def)
|
|
apply (rule conjI)
|
|
apply (clarsimp simp: valid_global_refs'_def global_refs'_def)
|
|
apply (clarsimp simp: valid_arch_state'_def)
|
|
apply (clarsimp simp: valid_asid_table'_def ran_def mask_def)
|
|
apply (rule conjI)
|
|
apply (clarsimp split: if_split_asm)
|
|
apply (fastforce simp: mask_def)
|
|
apply (rule conjI)
|
|
apply (clarsimp simp: valid_pspace'_def)
|
|
apply (simp add: valid_machine_state'_def)
|
|
done
|
|
|
|
lemma ex_cte_not_in_untyped_range:
|
|
"\<lbrakk>(ctes_of s) cref = Some (CTE (capability.UntypedCap d ptr bits idx) mnode);
|
|
descendants_of' cref (ctes_of s) = {}; invs' s;
|
|
ex_cte_cap_wp_to' (\<lambda>_. True) x s; valid_global_refs' s\<rbrakk>
|
|
\<Longrightarrow> x \<notin> mask_range ptr bits"
|
|
apply clarsimp
|
|
apply (drule(1) cte_cap_in_untyped_range)
|
|
apply (fastforce simp:cte_wp_at_ctes_of)+
|
|
done
|
|
|
|
lemma kernel_mappings_canonical_pt_base:
|
|
"x \<in> kernel_mappings \<Longrightarrow> canonical_address (table_base x)"
|
|
apply (simp add: kernel_mappings_def pptr_base_def RISCV64.pptrBase_def canonical_address_range
|
|
canonical_bit_def bit_simps)
|
|
by (word_bitwise, clarsimp simp: word_size)
|
|
|
|
lemma performASIDControlInvocation_invs' [wp]:
|
|
"\<lbrace>invs' and ct_active' and valid_aci' aci\<rbrace>
|
|
performASIDControlInvocation aci \<lbrace>\<lambda>y. invs'\<rbrace>"
|
|
apply (rule hoare_name_pre_state)
|
|
apply (clarsimp simp: performASIDControlInvocation_def valid_aci'_def
|
|
placeNewObject_def2 cte_wp_at_ctes_of
|
|
split: asidcontrol_invocation.splits)
|
|
apply (rename_tac w1 w2 w3 w4 cte ctea idx)
|
|
apply (case_tac ctea)
|
|
apply (clarsimp)
|
|
apply (frule ctes_of_valid_cap')
|
|
apply fastforce
|
|
apply (rule hoare_pre)
|
|
apply (wp hoare_vcg_const_imp_lift)
|
|
apply (strengthen invs_asid_table_strengthen')
|
|
apply (wp cteInsert_simple_invs)
|
|
apply (wp createObjects'_wp_subst[OF
|
|
createObjects_no_cte_invs[where sz = pageBits and ty="Inl (KOArch (KOASIDPool pool))" for pool]]
|
|
createObjects_orig_cte_wp_at'[where sz = pageBits] hoare_vcg_const_imp_lift
|
|
|simp add: makeObjectKO_def asid_pool_typ_at_ext' valid_cap'_def cong: rev_conj_cong
|
|
|strengthen safe_parent_strg'[where idx= "2^ pageBits"])+
|
|
apply (rule hoare_vcg_conj_lift)
|
|
apply (rule descendants_of'_helper)
|
|
apply (wp createObjects_null_filter'
|
|
[where sz = pageBits and ty="Inl (KOArch (KOASIDPool ap))" for ap]
|
|
createObjects_valid_pspace'
|
|
[where sz = pageBits and ty="Inl (KOArch (KOASIDPool ap))" for ap]
|
|
| simp add: makeObjectKO_def asid_pool_typ_at_ext' valid_cap'_def
|
|
cong: rev_conj_cong)+
|
|
apply (simp add: objBits_simps valid_cap'_def capAligned_def range_cover_full)
|
|
apply (wp createObjects'_wp_subst[OF createObjects_ex_cte_cap_to[where sz = pageBits]]
|
|
createObjects_orig_cte_wp_at'[where sz = pageBits]
|
|
hoare_vcg_const_imp_lift
|
|
|simp add: makeObjectKO_def asid_pool_typ_at_ext' valid_cap'_def
|
|
isCap_simps
|
|
canonical_address_neq_mask
|
|
cong: rev_conj_cong
|
|
|strengthen safe_parent_strg'[where idx = "2^ pageBits"]
|
|
| rule in_kernel_mappings_neq_mask
|
|
| simp add: bit_simps kernel_mappings_canonical_pt_base[unfolded bit_simps])+
|
|
apply (simp add:asid_pool_typ_at_ext'[symmetric])
|
|
apply (wp createObject_typ_at')
|
|
apply (simp add: objBits_simps valid_cap'_def
|
|
capAligned_def range_cover_full makeObjectKO_def
|
|
asid_pool_typ_at_ext'
|
|
cong: rev_conj_cong)
|
|
apply (clarsimp simp:conj_comms
|
|
descendants_of_null_filter'
|
|
| strengthen invs_pspace_aligned' invs_pspace_distinct'
|
|
invs_pspace_aligned' invs_valid_pspace')+
|
|
apply (wp updateFreeIndex_forward_invs'
|
|
updateFreeIndex_cte_wp_at
|
|
updateFreeIndex_pspace_no_overlap'
|
|
updateFreeIndex_caps_no_overlap''
|
|
updateFreeIndex_descendants_of2
|
|
updateFreeIndex_caps_overlap_reserved
|
|
updateCap_cte_wp_at_cases hoare_weak_lift_imp
|
|
getSlotCap_wp)+
|
|
apply (clarsimp simp:conj_comms ex_disj_distrib is_aligned_mask
|
|
| strengthen invs_valid_pspace' invs_pspace_aligned'
|
|
invs_pspace_distinct' empty_descendants_range_in')+
|
|
apply (wp deleteObjects_invs'[where p="makePoolParent aci"]
|
|
hoare_vcg_ex_lift
|
|
deleteObjects_caps_no_overlap''[where slot="makePoolParent aci"]
|
|
deleteObject_no_overlap
|
|
deleteObjects_cap_to'[where p="makePoolParent aci"]
|
|
deleteObjects_ct_active'[where cref="makePoolParent aci"]
|
|
deleteObjects_descendants[where p="makePoolParent aci"]
|
|
deleteObjects_cte_wp_at'
|
|
deleteObjects_null_filter[where p="makePoolParent aci"])
|
|
apply (frule valid_capAligned)
|
|
apply (clarsimp simp: invs_mdb' invs_valid_pspace' capAligned_def
|
|
cte_wp_at_ctes_of is_simple_cap'_def isCap_simps)
|
|
apply (strengthen refl ctes_of_valid_cap'[mk_strg I E])
|
|
apply (clarsimp simp: conj_comms invs_valid_objs')
|
|
apply (frule_tac ptr="w1" in descendants_range_caps_no_overlapI'[where sz = pageBits])
|
|
apply (fastforce simp: cte_wp_at_ctes_of)
|
|
apply (simp add:empty_descendants_range_in')
|
|
apply (frule(1) if_unsafe_then_capD'[OF _ invs_unsafe_then_cap',rotated])
|
|
apply (fastforce simp:cte_wp_at_ctes_of)
|
|
apply (drule ex_cte_not_in_untyped_range[rotated -2])
|
|
apply (simp add:invs_valid_global')+
|
|
apply (drule ex_cte_not_in_untyped_range[rotated -2])
|
|
apply (simp add:invs_valid_global')+
|
|
apply (subgoal_tac "is_aligned (2 ^ pageBits) minUntypedSizeBits")
|
|
prefer 2
|
|
apply (rule is_aligned_weaken)
|
|
apply (rule is_aligned_shiftl_self[unfolded shiftl_t2n,where p = 1, simplified])
|
|
apply (simp add: pageBits_def untypedBits_defs)
|
|
apply (frule_tac cte="CTE (capability.UntypedCap False a b c) m" for a b c m in valid_global_refsD', clarsimp)
|
|
apply (simp add: Int_commute)
|
|
by (auto simp:empty_descendants_range_in' objBits_simps max_free_index_def
|
|
asid_low_bits_def word_bits_def
|
|
range_cover_full descendants_range'_def2 is_aligned_mask
|
|
null_filter_descendants_of'[OF null_filter_simp'] bit_simps
|
|
valid_cap_simps' mask_def kernel_mappings_canonical)
|
|
|
|
|
|
lemma arch_performInvocation_invs':
|
|
"\<lbrace>invs' and ct_active' and valid_arch_inv' invocation\<rbrace>
|
|
Arch.performInvocation invocation
|
|
\<lbrace>\<lambda>rv. invs'\<rbrace>"
|
|
unfolding RISCV64_H.performInvocation_def
|
|
by (cases invocation, simp_all add: performRISCVMMUInvocation_def valid_arch_inv'_def; wpsimp)
|
|
|
|
end
|
|
|
|
end
|