From 54c77aa055ee41c8a4d2d500781752804cdfc339 Mon Sep 17 00:00:00 2001 From: David Hashe Date: Wed, 18 Apr 2018 16:36:55 -0400 Subject: sim-se: add a faux-filesystem This change introduces the concept of a faux-filesystem. The faux-filesystem creates a directory structure in m5out (or whatever output dir the user specifies) where system calls may be redirected. This is useful to avoid non-determinism when reading files with varying path names (e.g., variations from run-to-run if the simulation is scheduled on a cluster where paths may change). Also, this changeset allows circumventing host pseudofiles which have information specific to the host processor (such as cache hierarchy or processor information). Bypassing host pseudofiles can be useful when executing runtimes in the absence of an operating system kernel since runtimes may try to query standard files (i.e. /proc or /sys) which are not relevant to an application executing in syscall emulation mode. Change-Id: I90821b3b403168b904a662fa98b85def1628621c Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/12119 Reviewed-by: Jason Lowe-Power Maintainer: Jason Lowe-Power Tested-by: kokoro --- src/sim/System.py | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/sim/System.py') diff --git a/src/sim/System.py b/src/sim/System.py index 51b1a743f..c012cb256 100644 --- a/src/sim/System.py +++ b/src/sim/System.py @@ -83,6 +83,8 @@ class System(MemObject): cache_line_size = Param.Unsigned(64, "Cache line size in bytes") + redirect_paths = VectorParam.RedirectPath([], "Path redirections") + exit_on_work_items = Param.Bool(False, "Exit from the simulation loop when " "encountering work item annotations.") work_item_id = Param.Int(-1, "specific work item id") -- cgit v1.2.3