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riscv crefine: introduce registers_count type abbrev 

Signed-off-by: Rafal Kolanski <rafal.kolanski@data61.csiro.au>
This commit is contained in:
Rafal Kolanski 2020-04-17 03:01:31 +10:00 committed by Gerwin Klein
parent 70ee5750f6
commit e9e562c33d
2 changed files with 3 additions and 2 deletions
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2
proof/crefine/RISCV64/StateRelation_C.thy
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@ -233,7 +233,7 @@ fun
| "register_from_H RISCV64.NextIP = scast Kernel_C.NextIP"
definition
cregs_relation :: "(MachineTypes.register \<Rightarrow> machine_word) \<Rightarrow> machine_word[35] \<Rightarrow> bool"
cregs_relation :: "(MachineTypes.register \<Rightarrow> machine_word) \<Rightarrow> machine_word[registers_count] \<Rightarrow> bool"
where
"cregs_relation Hregs Cregs \<equiv> \<forall>r. Hregs r = Cregs.[unat (register_from_H r)]"

3
proof/crefine/RISCV64/Wellformed_C.thy
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@ -39,7 +39,8 @@ abbreviation
pt_Ptr :: "machine_word \<Rightarrow> (pte_C[512]) ptr" where "pt_Ptr == Ptr"
type_synonym tcb_cnode_array = "cte_C[5]"
type_synonym registers_array = "machine_word[35]"
type_synonym registers_count = 35
type_synonym registers_array = "machine_word[registers_count]"
abbreviation "user_context_Ptr \<equiv> Ptr :: addr \<Rightarrow> user_context_C ptr"
abbreviation "machine_word_Ptr \<equiv> Ptr :: addr \<Rightarrow> machine_word ptr"