diff options
Diffstat (limited to 'mppa_k1c/ExtValues.v')
| -rw-r--r-- | mppa_k1c/ExtValues.v | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mppa_k1c/ExtValues.v b/mppa_k1c/ExtValues.v index 5d16b79c..1aa17458 100644 --- a/mppa_k1c/ExtValues.v +++ b/mppa_k1c/ExtValues.v @@ -2,6 +2,20 @@ Require Import Coqlib. Require Import Integers. Require Import Values. +Inductive shift1_4 : Type := +| SHIFT1 | SHIFT2 | SHIFT3 | SHIFT4. + +Definition z_of_shift1_4 (x : shift1_4) := + match x with + | SHIFT1 => 1 + | SHIFT2 => 2 + | SHIFT3 => 3 + | SHIFT4 => 4 + end. + +Definition int_of_shift1_4 (x : shift1_4) := + Int.repr (z_of_shift1_4 x). + Definition is_bitfield stop start := (Z.leb start stop) && (Z.geb start Z.zero) |