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authorSteve Reinhardt <steve.reinhardt@amd.com>2015-02-05 16:45:06 -0800
committerSteve Reinhardt <steve.reinhardt@amd.com>2015-02-05 16:45:06 -0800
commit634d92375150f813763bb06b07b06ef3d7a15142 (patch)
treeeef54a7a7ddca4dc7e09a4359affc1fb1fd89c1b /configs/common
parent461a80beb36d29961b6eb88b9ce292042fffd53c (diff)
downloadgem5-634d92375150f813763bb06b07b06ef3d7a15142.tar.xz
config: make M5_PATH a real search path
Although you can put a list of colon-separated directory names in M5_PATH, the current code just takes the first one that exists and assumes all files must live there. This change makes the code search the specified list of directories for each individual binary or disk image that's requested. The main motivation is that the x86/Alpha binaries and the ARM binaries are in separate downloads, and thus naturally end up in separate directories. With this change, you can have M5_PATH point to those two directories, then run any FS regression test without changing M5_PATH. Currently, you either have to merge the two download directories or change M5_PATH (or do something else I haven't figured out).
Diffstat (limited to 'configs/common')
-rw-r--r--configs/common/SysPaths.py49
1 files changed, 28 insertions, 21 deletions
diff --git a/configs/common/SysPaths.py b/configs/common/SysPaths.py
index c61c9962e..b13aff218 100644
--- a/configs/common/SysPaths.py
+++ b/configs/common/SysPaths.py
@@ -33,39 +33,46 @@ from os import environ as env
config_path = os.path.dirname(os.path.abspath(__file__))
config_root = os.path.dirname(config_path)
+def searchpath(path, file):
+ for p in path:
+ f = joinpath(p, file)
+ if os.path.exists(f):
+ return f
+ raise IOError, "Can't find file '%s' on path." % file
+
def disk(file):
system()
- return joinpath(disk.dir, file)
+ return searchpath(disk.path, file)
def binary(file):
system()
- return joinpath(binary.dir, file)
+ return searchpath(binary.path, file)
def script(file):
system()
- return joinpath(script.dir, file)
+ return searchpath(script.path, file)
def system():
- if not system.dir:
+ if not system.path:
try:
- path = env['M5_PATH'].split(':')
+ path = env['M5_PATH'].split(':')
except KeyError:
- path = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system' ]
+ path = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system' ]
+
+ # filter out non-existent directories
+ system.path = filter(os.path.isdir, path)
- for system.dir in path:
- if os.path.isdir(system.dir):
- break
- else:
- raise ImportError, "Can't find a path to system files."
+ if not system.path:
+ raise IOError, "Can't find a path to system files."
- if not binary.dir:
- binary.dir = joinpath(system.dir, 'binaries')
- if not disk.dir:
- disk.dir = joinpath(system.dir, 'disks')
- if not script.dir:
- script.dir = joinpath(config_root, 'boot')
+ if not binary.path:
+ binary.path = [joinpath(p, 'binaries') for p in system.path]
+ if not disk.path:
+ disk.path = [joinpath(p, 'disks') for p in system.path]
+ if not script.path:
+ script.path = [joinpath(config_root, 'boot')]
-system.dir = None
-binary.dir = None
-disk.dir = None
-script.dir = None
+system.path = None
+binary.path = None
+disk.path = None
+script.path = None