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|
(* Simple trace comparison checker *)
type csr_read = {
csrr : string;
rdval : int64
}
type csr_write = {
csrw : string;
wrval : int64;
inval : int64
}
type reg_write = {
reg : int;
rval : int64
}
type inst = {
count : int;
priv : char;
pc : int64;
inst: int32
}
type line =
| L_none
| L_inst of inst
| L_reg_write of reg_write
| L_csr_read of csr_read
| L_csr_write of csr_write
let inst_count = ref 0
(* csr reads
CSR mscratch -> 0x0000000000000000
*)
let parse_csr_read l =
try Scanf.sscanf l " CSR %s -> 0x%Lx" (fun csrr rdval -> L_csr_read { csrr; rdval })
with
| Scanf.Scan_failure _ -> L_none
| End_of_file -> L_none
let sprint_csr_read r =
Printf.sprintf "CSR %s -> 0x%Lx" r.csrr r.rdval
(* csr writes
CSR mstatus <- 0x0000000a00020800 (input: 0x0000000a00020800)
*)
let parse_csr_write l =
try Scanf.sscanf l " CSR %s <- 0x%Lx (input: 0x%Lx)"
(fun csrw wrval inval -> L_csr_write { csrw; wrval; inval })
with
| Scanf.Scan_failure _ -> L_none
| End_of_file -> L_none
let sprint_csr_write r =
Printf.sprintf "CSR %s <- 0x%Lx (input: 0x%Lx)" r.csrw r.wrval r.inval
(* reg writes
x16 <- 0x0000000000000000
*)
let parse_reg_write l =
try Scanf.sscanf l " x%u <- 0x%Lx"
(fun reg rval -> L_reg_write { reg; rval })
with
| Scanf.Scan_failure _ -> L_none
| End_of_file -> L_none
let sprint_reg_write r =
Printf.sprintf "x%u <- 0x%Lx" r.reg r.rval
(* instructions *)
let sprint_inst r =
Printf.sprintf "[%u] [%c]: 0x%Lx (0x%lx)" r.count r.priv r.pc r.inst
(* sail instruction line:
[13000] [M]: 0x0000000080000E4A (0x0107971B) slli a4, a5, 0b10000
*)
let parse_sail_inst l =
try Scanf.sscanf l " [%u] [%c]: 0x%Lx (0x%lx) %s"
(fun count priv pc inst _ ->
inst_count := count;
L_inst { count; priv; pc; inst } )
with
| Scanf.Scan_failure _ -> L_none
| End_of_file -> L_none
(* spike instruction line:
[2] core 0 [M]: 0x0000000000001008 (0xf1402573) csrr a0, mhartid
*)
let parse_spike_inst l =
try Scanf.sscanf l " [%u] core 0 [%c]: 0x%Lx (0x%lx) %s"
(fun count priv pc inst _ ->
inst_count := count;
L_inst { count; priv; pc; inst } )
with
| Scanf.Scan_failure _ -> L_none
| End_of_file -> L_none
(* scanners *)
let popt p l = function
| L_none -> p l
| res -> res
let parse_line l =
parse_csr_read l |> popt parse_csr_write l |> popt parse_reg_write l
let parse_sail_line l =
parse_line l |> popt parse_sail_inst l
let parse_spike_line l =
parse_line l |> popt parse_spike_inst l
(* printer *)
let sprint_line = function
| L_none -> "<not-parsed>"
| L_inst i -> sprint_inst i
| L_reg_write r -> Printf.sprintf "<%d> %s" !inst_count (sprint_reg_write r)
| L_csr_read r -> Printf.sprintf "<%d> %s" !inst_count (sprint_csr_read r)
| L_csr_write r -> Printf.sprintf "<%d> %s" !inst_count (sprint_csr_write r)
(* file processing *)
let rec get_line ch parse =
let line = try Some (input_line ch)
with End_of_file -> None in
match line with
| Some l -> (match parse l with
| L_none -> get_line ch parse
| r -> r
)
| None -> L_none
let rec print_lines ch parse =
match (get_line ch parse) with
| L_none -> ()
| l -> (print_endline (sprint_line l);
print_lines ch parse)
let rec compare_traces k l cnt =
let kro = get_line k parse_spike_line in
let lro = get_line l parse_sail_line in
match kro, lro with
| L_none, L_none ->
print_endline (Printf.sprintf "Matched %d instructions" cnt)
| L_none, lr ->
print_endline "Spike: not reached";
print_endline ("Sail: " ^ sprint_line lr);
exit 1
| kr, L_none ->
print_endline ("Spike: " ^ sprint_line kr);
print_endline "Sail: not reached";
exit 1
| kr, lr ->
if kr <> lr
then ( print_endline ("Spike: " ^ sprint_line kr);
print_endline ("Sail: " ^ sprint_line lr);
exit 1 )
else compare_traces k l (cnt + 1)
let spike_log = ref (None : string option)
let sail_log = ref (None : string option)
let uncompress = ref false
let in_file f =
if !uncompress
then Unix.open_process_in ("gunzip -c " ^ f)
else open_in f
let options =
Arg.align ([( "-z",
Arg.Set uncompress,
" uncompress trace files");
( "-k",
Arg.String (fun f -> spike_log := Some f),
" spike trace log");
( "-l",
Arg.String (fun f -> sail_log := Some f),
" sail trace log")])
let usage = "usage: tracecmp [options]\n"
let _ =
Arg.parse options (fun s -> print_endline usage; exit 0)
usage;
match !spike_log, !sail_log with
| None, None -> (print_endline usage; exit 0)
| Some l, None -> print_lines (in_file l) parse_spike_line
| None, Some l -> print_lines (in_file l) parse_sail_line
| Some k, Some l -> compare_traces (in_file k) (in_file l) 0
|
