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Fix string table to cope with identical strings at different offsets.

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Subversion-branch: /research
Subversion-revision: 1891
This commit is contained in:
Simon Howard 2010-04-18 14:06:50 +00:00
parent 6990158b50
commit b6eb31f7f9
1 changed files with 29 additions and 19 deletions
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48
hhe/gen-string-tables
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@ -2,16 +2,6 @@
require "common.rb"
def strings_to_lookup(strings)
lookup = {}
for string in strings
lookup[string[1]] = string[0]
end
lookup
end
# Generate string -> offset lookup tables for each executable.
def load_string_lookups(exe_files)
@ -19,7 +9,7 @@ def load_string_lookups(exe_files)
CONFIGS.each_with_index do |config, i|
strings = find_strings(exe_files[i], config)
string_lookups.push(strings_to_lookup(strings))
string_lookups.push(strings)
end
string_lookups
@ -33,11 +23,31 @@ def load_good_strings(filename)
end
end
# Look up a string's offset, removing it from the specified lookup table.
# This is done because a string can appear multiple times at different offsets.
def lookup_string(lookup_table, string)
lookup_table.each_with_index do |entry, i|
if entry[1] == string
lookup_table.delete_at(i)
return entry[0]
end
end
nil
end
# Find offsets for the specified string.
def get_string_offsets(string, string_lookups)
string_lookups.map do |lookup|
lookup[string] or 0
offset = lookup_string(lookup, string)
if offset != nil
offset
else
0
end
end
end
@ -49,13 +59,13 @@ def format_offsets(offsets)
"{ " + formatted_offsets.join(", ") + " }"
end
def print_unused_strings(name, strings, good_strings)
unused_offsets = []
# Print strings left over in the specified lookup table
# that were not in the good strings list.
strings.each_pair do |string, offset|
if not good_strings.member? string
unused_offsets.push(offset)
end
def print_unused_strings(name, strings)
unused_offsets = strings.map do |entry|
entry[0]
end
puts "static int #{name} = {"
@ -105,7 +115,7 @@ puts
CONFIGS.each_with_index do |config, i|
name = "unused_strings_#{config::SUFFIX}"
print_unused_strings(name, string_lookups[i], good_strings)
print_unused_strings(name, string_lookups[i])
end