[PATCH v2] buildtools: fix invalid symbols

[Mingjin Ye <mingjinx.ye@intel.com>]

Elf files generated by higher version compilers wrap multiple
symbols prefixed with "this_pmd_name".

The patch uses the regex "^this_pmd_name[0-9]+$" to match the
symbol name.

Bugzilla ID: 1466
Fixes: 6c4bf8f42432 ("buildtools: add Python pmdinfogen")
Cc: stable@dpdk.org

Signed-off-by: Mingjin Ye <mingjinx.ye@intel.com>
---
v2: Use regex ^this_pmd_name[0-9]+$ to filter symbols *names*
---
 buildtools/pmdinfogen.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/buildtools/pmdinfogen.py b/buildtools/pmdinfogen.py
index 2a44f17bda..0fbcc697ed 100755
--- a/buildtools/pmdinfogen.py
+++ b/buildtools/pmdinfogen.py
@@ -6,6 +6,7 @@
 import argparse
 import ctypes
 import json
+import re
 import sys
 import tempfile
 
@@ -70,7 +71,7 @@ def find_by_prefix(self, prefix):
         prefix = prefix.encode("utf-8") if self._legacy_elftools else prefix
         for i in range(self._symtab.num_symbols()):
             symbol = self._symtab.get_symbol(i)
-            if symbol.name.startswith(prefix):
+            if re.match(prefix, symbol.name):
                 yield ELFSymbol(self._image, symbol)
 
 
@@ -199,7 +200,7 @@ def dump(self, file):
 
 def load_drivers(image):
     drivers = []
-    for symbol in image.find_by_prefix("this_pmd_name"):
+    for symbol in image.find_by_prefix("^this_pmd_name[0-9]+$"):
         drivers.append(Driver.load(image, symbol))
     return drivers
 
-- 
2.25.1