From ac1e3d00d8ebf88221d951ab7304d990fdb2ba3e Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sat, 23 Jan 2021 15:02:59 +0000
Subject: [PATCH] start to read RM CSV files

---
 src/soc/decoder/power_enums.py | 10 ++++++++--
 src/soc/sv/trans/svp64.py      | 23 ++++++++++++++++++++---
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/soc/decoder/power_enums.py b/src/soc/decoder/power_enums.py
index b33cb277..51cd94bb 100644
--- a/src/soc/decoder/power_enums.py
+++ b/src/soc/decoder/power_enums.py
@@ -5,6 +5,13 @@ from os.path import dirname, join
 from collections import namedtuple
 
 
+def find_wiki_dir():
+    filedir = os.path.dirname(os.path.abspath(__file__))
+    basedir = dirname(dirname(dirname(filedir)))
+    tabledir = join(basedir, 'libreriscv')
+    tabledir = join(tabledir, 'openpower')
+    return join(tabledir, 'isatables')
+
 def find_wiki_file(name):
     filedir = os.path.dirname(os.path.abspath(__file__))
     basedir = dirname(dirname(dirname(filedir)))
@@ -12,8 +19,7 @@ def find_wiki_file(name):
     tabledir = join(tabledir, 'openpower')
     tabledir = join(tabledir, 'isatables')
 
-    file_path = join(tabledir, name)
-    return file_path
+    return join(find_wiki_dir(), name)
 
 
 def get_csv(name):
diff --git a/src/soc/sv/trans/svp64.py b/src/soc/sv/trans/svp64.py
index 541306f2..a95b2178 100644
--- a/src/soc/sv/trans/svp64.py
+++ b/src/soc/sv/trans/svp64.py
@@ -6,10 +6,14 @@
 
 This class takes raw svp64 assembly mnemonics (aliases excluded) and
 creates an EXT001-encoded "svp64 prefix" followed by a v3.0B opcode.
-It is very simple
+
+It is very simple and straightforward, the only weirdness being the
+extraction of the register information and conversion to v3.0B numbering.
 """
+import os, sys
 
 from soc.decoder.pseudo.pagereader import ISA
+from soc.decoder.power_enums import get_csv, find_wiki_dir
 
 
 def is_CR_3bit(regname):
@@ -20,6 +24,18 @@ def is_CR_5bit(regname):
 
 def is_GPR(regname):
     return regname in ['RA', 'RB', 'RC', 'RS', 'RT']
+ 
+
+class SVP64RM:
+    def __init__(self):
+        self.instrs = {}
+        pth = find_wiki_dir()
+        print (pth)
+        for fname in os.listdir(pth):
+            print (fname)
+            if fname.startswith("RM"):
+                entries = get_csv(fname)
+                print (entries)
 
 
 class SVP64:
@@ -59,5 +75,6 @@ class SVP64:
 
 if __name__ == '__main__':
     isa = SVP64(['slw 3, 1, 4',
-                 'extsw 5, 3'])
-
+                 'extsw 5, 3',
+                 'sv.extsw 5, 3'])
+    csvs = SVP64RM()
-- 
2.30.2