From: Michael Nolan <mtnolan2640@gmail.com>
Date: Sat, 2 May 2020 19:27:34 +0000 (-0400)
Subject: Read decoder tables from wiki submodule instead of web
X-Git-Tag: div_pipeline~1401
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e014f0dec6a5ed4f5ed8947316a5f5d6870eaf58;p=soc.git

Read decoder tables from wiki submodule instead of web
---

diff --git a/src/soc/decoder/power_enums.py b/src/soc/decoder/power_enums.py
index d1cad121..b480eaba 100644
--- a/src/soc/decoder/power_enums.py
+++ b/src/soc/decoder/power_enums.py
@@ -2,23 +2,21 @@ from enum import Enum, unique
 import csv
 import os
 import requests
+from os.path import dirname, join
 
+def find_wiki_file(name):
+    filedir = os.path.dirname(os.path.abspath(__file__))
+    basedir = dirname(dirname(dirname(filedir)))
+    tabledir = join(basedir, 'libreriscv')
+    tabledir = join(tabledir, 'openpower')
+    tabledir = join(tabledir, 'isatables')
 
-def download_wiki_file(name, name_on_wiki=None):
-    if name_on_wiki is None:
-        name_on_wiki = name
-    file_dir = os.path.dirname(os.path.realpath(__file__))
-    file_path = os.path.join(file_dir, name)
-    if not os.path.isfile(file_path):
-        url = 'https://libre-riscv.org/openpower/isatables/' + name_on_wiki
-        r = requests.get(url, allow_redirects=True)
-        with open(file_path, 'w') as outfile:
-            outfile.write(r.content.decode("utf-8"))
+    file_path = join(tabledir, name)
     return file_path
 
 
 def get_csv(name):
-    file_path = download_wiki_file(name)
+    file_path = find_wiki_file(name)
     with open(file_path, 'r') as csvfile:
         reader = csv.DictReader(csvfile)
         return list(reader)
diff --git a/src/soc/decoder/power_fields.py b/src/soc/decoder/power_fields.py
index 9dc07b8e..8fa21f29 100644
--- a/src/soc/decoder/power_fields.py
+++ b/src/soc/decoder/power_fields.py
@@ -1,5 +1,5 @@
 from collections import OrderedDict, namedtuple
-from soc.decoder.power_enums import download_wiki_file
+from soc.decoder.power_enums import find_wiki_file
 
 
 class BitRange(OrderedDict):
@@ -115,7 +115,7 @@ class DecodeFields:
             assert name_on_wiki is None
             fname = "fields.txt"
             name_on_wiki = "fields.text"
-        self.fname = download_wiki_file(fname, name_on_wiki)
+        self.fname = find_wiki_file(name_on_wiki)
 
     def create_specs(self):
         self.forms, self.instrs = self.decode_fields()