[icestorm] 64/75: Added sdfsummary.py

[Ruben Undheim]

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rubund-guest pushed a commit to branch master
in repository icestorm.

commit c501c69942e3c19e11be0d061e56bb10a27d7a50
Author: Clifford Wolf <clifford at clifford.at>
Date:   Sat Sep 26 18:38:09 2015 +0200

    Added sdfsummary.py
---
 icefuzz/sdfsummary.py | 178 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)

diff --git a/icefuzz/sdfsummary.py b/icefuzz/sdfsummary.py
new file mode 100644
index 0000000..f1fad42
--- /dev/null
+++ b/icefuzz/sdfsummary.py
@@ -0,0 +1,178 @@
+#!/usr/bin/env python3
+
+import fileinput
+import re
+
+intext = []
+for line in fileinput.input():
+    line = re.sub("//.*", "", line)
+    intext.append(line)
+
+def skip_whitespace(text, cursor):
+    while cursor < len(text) and text[cursor] in [" ", "\t", "\r", "\n"]:
+        cursor += 1
+    return cursor
+
+def parse_sdf(text, cursor):
+    cursor = skip_whitespace(text, cursor)
+
+    if cursor < len(text) and text[cursor] == "(":
+        expr = []
+        cursor += 1
+        while cursor < len(text) and text[cursor] != ")":
+            child, cursor = parse_sdf(text, cursor)
+            expr.append(child)
+            cursor = skip_whitespace(text, cursor)
+        return expr, cursor+1
+
+    if cursor < len(text) and text[cursor] == '"':
+        expr = '"'
+        cursor += 1
+        while cursor < len(text) and text[cursor] != '"':
+            expr += text[cursor]
+            cursor += 1
+        return expr + '"', cursor+1
+
+    expr = ""
+    while cursor < len(text) and text[cursor] not in [" ", "\t", "\r", "\n", "(", ")"]:
+        expr += text[cursor]
+        cursor += 1
+    return expr, cursor
+
+def sdf_to_string(expr):
+    if type(expr) is list:
+        tokens = []
+        tokens.append("(")
+        first_child = True
+        for child in expr:
+            if not first_child:
+                tokens.append(" ")
+            tokens.append(sdf_to_string(child))
+            first_child = False
+        tokens.append(")")
+        return "".join(tokens)
+    else:
+        return expr
+
+def dump_sdf(expr, indent=""):
+    if type(expr) is list:
+        if len(expr) > 0 and expr[0] in ["IOPATH", "SETUP", "HOLD", "CELLTYPE", "INSTANCE", "SDFVERSION",
+                "DESIGN", "DATE", "VENDOR", "DIVIDER", "TIMESCALE", "RECOVERY", "REMOVAL"]:
+            print(indent + sdf_to_string(expr))
+        else:
+            print("%s(%s" % (indent, expr[0] if len(expr) > 0 else ""))
+            for child in expr[1:]:
+                dump_sdf(child, indent + "  ")
+            print("%s)" % indent)
+    else:
+        print("%s%s" % (indent, expr))
+
+sdfdata, _ = parse_sdf("".join(intext), 0)
+
+def generalize_instances(expr):
+    if type(expr) is list:
+        if len(expr) == 2 and expr[0] == "INSTANCE":
+            expr[1] = "*"
+        for child in expr:
+            generalize_instances(child)
+
+generalize_instances(sdfdata)
+
+def list_to_tuple(expr):
+    if type(expr) is list:
+        tup = []
+        for child in expr:
+            tup.append(list_to_tuple(child))
+        return tuple(tup)
+    return expr
+
+def uniquify_cells(expr):
+    cache = set()
+    filtered_expr = []
+
+    for child in expr:
+        t = list_to_tuple(child)
+        if t not in cache:
+            filtered_expr.append(child)
+            cache.add(t)
+
+    return filtered_expr
+
+sdfdata = uniquify_cells(sdfdata)
+# dump_sdf(sdfdata)
+
+iopaths = dict()
+
+for cell in sdfdata:
+    if cell[0] != "CELL":
+        continue
+
+    celltype = None
+    for stmt in cell:
+        if stmt[0] == "CELLTYPE":
+            celltype = stmt[1][1:-1]
+
+            if celltype.startswith("PRE_IO_PIN_TYPE_"):
+                celltype = "PRE_IO_PIN_TYPE"
+
+            if celltype.startswith("Span4Mux"):
+                if celltype == "Span4Mux":
+                    celltype = "Span4Mux_v4"
+                elif celltype == "Span4Mux_v":
+                    celltype = "Span4Mux_v4"
+                elif celltype == "Span4Mux_h":
+                    celltype = "Span4Mux_h4"
+                else:
+                    match = re.match("Span4Mux_s(.*)_(h|v)", celltype)
+                    celltype = "Span4Mux_%c%d" % (match.group(2), int(match.group(1)))
+
+            if celltype.startswith("Span12Mux"):
+                if celltype == "Span12Mux":
+                    celltype = "Span12Mux_v12"
+                elif celltype == "Span12Mux_v":
+                    celltype = "Span12Mux_v12"
+                elif celltype == "Span12Mux_h":
+                    celltype = "Span12Mux_h12"
+                else:
+                    match = re.match("Span12Mux_s(.*)_(h|v)", celltype)
+                    celltype = "Span12Mux_%c%d" % (match.group(2), int(match.group(1)))
+
+            iopaths.setdefault(celltype, set())
+
+        if stmt[0] == "DELAY":
+            assert stmt[1][0] == "ABSOLUTE"
+            for iopath in stmt[1][1:]:
+                assert iopath[0] == "IOPATH"
+                iopaths[celltype].add(sdf_to_string(iopath))
+
+        if stmt[0] == "TIMINGCHECK":
+            for iopath in stmt[1:]:
+                iopaths[celltype].add(sdf_to_string(iopath))
+
+convert = lambda text: int(text) if text.isdigit() else text.lower()
+alphanum_key = lambda key: [ convert(c) for c in re.split('([0-9]+)', key) ]
+alphanum_key_list = lambda l: [len(l)] + [ alphanum_key(s) for s in l ]
+
+for celltype in sorted(iopaths, key=alphanum_key):
+    print("CELL %s" % celltype)
+    path_list = list()
+    path_list_lens = list()
+    for iopath in iopaths[celltype]:
+        iopath = iopath.replace("(posedge ", "posedge:")
+        iopath = iopath.replace("(negedge ", "negedge:")
+        iopath = iopath.replace("(", "")
+        iopath = iopath.replace(")", "")
+        iopath = iopath.split()
+        for i in range(len(iopath)):
+            if i < len(path_list_lens):
+                path_list_lens[i] = max(path_list_lens[i], len(iopath[i]))
+            else:
+                path_list_lens.append(len(iopath[i]))
+        path_list.append(iopath)
+
+    for iopath in sorted(path_list, key=alphanum_key_list):
+        for i in range(len(iopath)):
+            print("%s%-*s" % ("  " if i != 0 else "", path_list_lens[i] if i != len(iopath)-1 else 0, iopath[i]), end="")
+        print()
+    print()
+

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