From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Tue, 25 May 2021 13:32:53 +0000 (+0100)
Subject: extracting memory for dump must be big-endian ordered
X-Git-Tag: xlen-bcd~550
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3b8d3465bb12b7e0357d24db5e478cc3e1946dde;p=openpower-isa.git

extracting memory for dump must be big-endian ordered
---

diff --git a/src/openpower/decoder/isa/pypowersim.py b/src/openpower/decoder/isa/pypowersim.py
index 9377021c..606d5c89 100644
--- a/src/openpower/decoder/isa/pypowersim.py
+++ b/src/openpower/decoder/isa/pypowersim.py
@@ -14,7 +14,8 @@ from openpower.util import log
 
 def read_data(fname, offset=0):
     """reads binary data and returns a dictionary of address: contents,
-    each entry is 8 bytes. input file *must* be 8-byte-aligned
+    each entry is 8 bytes: input file *must* contain a multiple of 8 bytes.
+    data to be considered *binary* (raw)
     """
     res = {}
     with open(fname, "rb") as f:
@@ -33,7 +34,7 @@ def write_data(mem, fname, offset, sz):
         for i in range(0, sz, 8):
             addr = offset + i
             val = mem.ld(addr, 8)
-            f.write(struct.pack('<Q', val)) # unsigned long
+            f.write(struct.pack('>Q', val)) # unsigned long
 
 
 def convert_to_num(num):