1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
(*========================================================================*)
(* *)
(* Copyright (c) 2015-2017 Robert M. Norton *)
(* Copyright (c) 2015-2017 Kathyrn Gray *)
(* All rights reserved. *)
(* *)
(* This software was developed by the University of Cambridge Computer *)
(* Laboratory as part of the Rigorous Engineering of Mainstream Systems *)
(* (REMS) project, funded by EPSRC grant EP/K008528/1. *)
(* *)
(* Redistribution and use in source and binary forms, with or without *)
(* modification, are permitted provided that the following conditions *)
(* are met: *)
(* 1. Redistributions of source code must retain the above copyright *)
(* notice, this list of conditions and the following disclaimer. *)
(* 2. Redistributions in binary form must reproduce the above copyright *)
(* notice, this list of conditions and the following disclaimer in *)
(* the documentation and/or other materials provided with the *)
(* distribution. *)
(* *)
(* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' *)
(* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *)
(* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *)
(* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR *)
(* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *)
(* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *)
(* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF *)
(* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *)
(* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, *)
(* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT *)
(* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF *)
(* SUCH DAMAGE. *)
(*========================================================================*)
(* mips_wrappers.sail: wrappers functions and hooks for CHERI extensibility
(mostly identity functions here) *)
function unit effect {wmem} MEMw_wrapper(addr, size, data) =
let ledata = reverse_endianness(data) in
if (addr == 0x000000007f000000) then
{
UART_WDATA := ledata[7..0];
UART_WRITTEN := 1;
} else {
MEMea(addr, size);
MEMval(addr, size, ledata);
}
function bool effect {wmem} MEMw_conditional_wrapper(addr, size, data) =
{
MEMea_conditional(addr, size);
MEMval_conditional(addr, size, reverse_endianness(data))
}
function bit[64] addrWrapper((bit[64]) addr, (MemAccessType) accessType, (WordType) width) =
addr
function (bit[64]) TranslatePC ((bit[64]) vAddr) = {
incrementCP0Count();
if (vAddr[1..0] != 0b00) then (* bad PC alignment *)
(SignalExceptionBadAddr(AdEL, vAddr))
else
TLBTranslate(vAddr, Instruction)
}
let have_cp2 = false
function unit SignalException ((Exception) ex) = SignalExceptionMIPS(ex, 0x0000000000000000)
function unit ERETHook() = ()
|
