New patch to review for serialice: fcd8a6c Refactor matching filters to actions

[Kyösti Mälkki]

Kyösti Mälkki ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2598

-gerrit

commit fcd8a6c3c5080464a16bcf939dc31bc9210b319a
Author: Kyösti Mälkki 
Date:   Wed Mar 6 20:19:27 2013 +0200

Refactor matching filters to actions

Each hooks list has some criteria when an action matches a filter.

For memory and IO, the action address must be within the range
    of an enabled filter.

For CPUID and MSR, the filter must be enabled, and the filter
    internally checks the index parameters.

Change-Id: I6f035a0a39d1f94dc77e1b1dc16459b071ca871a
    Signed-off-by: Kyösti Mälkki 
---
 SerialICE/simba/hooks.lua | 56 ++++++++++++++++++++++-------------------------
 1 file changed, 26 insertions(+), 30 deletions(-)

diff --git a/SerialICE/simba/hooks.lua b/SerialICE/simba/hooks.lua
index 4a0d529..8877cd7 100644
--- a/SerialICE/simba/hooks.lua
+++ b/SerialICE/simba/hooks.lua
@@ -3,8 +3,8 @@
 froot = { id = 0, name = "SerialICE" }
 fresource = { id = 1, name = "Resource" }

-function new_hooks(str)
-	return { list = nil, name = str }
+function new_hooks(str, rule)
+	return { list = nil, name = str, match_filter = rule }
 end

next_filter_id = 2
@@ -21,12 +21,22 @@ function new_parent_action()
    current_parent_id = action_id()
 end

+function filter_in_range(f, action)
+	if f.enable and action.addr >= f.base and action.addr < f.base + f.size then
+		return true
+	end
+	return false
+end
+
+function filter_enabled(f, action)
+	return f.enable
+end

-io_hooks = new_hooks("IO")
-mem_hooks = new_hooks("MEM")
+io_hooks = new_hooks("IO", filter_in_range)
+mem_hooks = new_hooks("MEM", filter_in_range)

-cpumsr_hooks = new_hooks("CPU MSR")
-cpuid_hooks = new_hooks("CPUID")
+cpumsr_hooks = new_hooks("CPU MSR", filter_enabled)
+cpuid_hooks = new_hooks("CPUID", filter_enabled)

function enable_hook(list, filter)
    if not filter then
@@ -76,21 +86,14 @@ function walk_pre_hooks(list, action)
    local l = list.list
    local f = nil

-	local no_base_check = true
-	if list == io_hooks or list == mem_hooks then
-		no_base_check = false
-	end
-
    while l and not logged do
    	f = l.hook
-		if no_base_check or action.addr >= f.base and action.addr < f.base + f.size then
-			if f.enable and f.pre then
-				if f.pre(f, action) then
-					if not f.raw then
-						action.logged_pre = f
-					end
-					logged = true
+		if list.match_filter(f, action) then
+			if f.pre and f.pre(f, action) then
+				if not f.raw then
+					action.logged_pre = f
    			end
+				logged = true
    		end
    	end
    	l = l.next
@@ -113,21 +116,14 @@ function walk_post_hooks(list, action)
    local l = list.list
    local f = nil

-	local no_base_check = true
-	if list == io_hooks or list == mem_hooks then
-		no_base_check = false
-	end
-
    while l and not logged do
    	f = l.hook
-		if no_base_check or action.addr >= f.base and action.addr < f.base + f.size then
-			if f.enable and f.post then
-				if f.post(f, action) then
-					if not f.raw then
-						action.logged_post = f
-					end
-					logged = false
+		if list.match_filter(f, action) then
+			if f.post and f.post(f, action) then
+				if not f.raw then
+					action.logged_post = f
    			end
+				logged = false
    		end
    	end
    	l = l.next