1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
#!./miniruby -sI.
$name = $library = $description = nil
module RbConfig
autoload :CONFIG, "./rbconfig"
end
class Exports
PrivateNames = /(?:Init_|InitVM_|ruby_static_id_|threadptr|_ec_|DllMain\b)/
def self.create(*args, &block)
platform = RUBY_PLATFORM
klass = constants.find do |p|
break const_get(p) if platform.include?(p.to_s.downcase)
end
unless klass
raise ArgumentError, "unsupported platform: #{platform}"
end
klass.new(*args, &block)
end
def self.extract(objs, *rest)
create(objs).exports(*rest)
end
def self.output(output = $output, &block)
if output
open(output, 'wb', &block)
else
yield STDOUT
end
end
def initialize(objs)
syms = {}
winapis = {}
syms["ruby_sysinit_real"] = "ruby_sysinit"
each_export(objs) do |internal, export|
syms[internal] = export
winapis[$1] = internal if /^_?(rb_w32_\w+)(?:@\d+)?$/ =~ internal
end
incdir = File.join(File.dirname(File.dirname(__FILE__)), "include/ruby")
read_substitution(incdir+"/win32.h", syms, winapis)
read_substitution(incdir+"/subst.h", syms, winapis)
syms["rb_w32_vsnprintf"] ||= "ruby_vsnprintf"
syms["rb_w32_snprintf"] ||= "ruby_snprintf"
@syms = syms
end
def read_substitution(header, syms, winapis)
IO.foreach(header) do |line|
if /^#define (\w+)\((.*?)\)\s+(?:\(void\))?(rb_w32_\w+)\((.*?)\)\s*$/ =~ line and
$2.delete(" ") == $4.delete(" ")
export, internal = $1, $3
if syms[internal] or internal = winapis[internal]
syms[forwarding(internal, export)] = internal
end
end
end
end
def exports(name = $name, library = $library, description = $description)
exports = []
if name
exports << "Name " + name
elsif library
exports << "Library " + library
end
exports << "Description " + description.dump if description
exports << "VERSION #{RbConfig::CONFIG['MAJOR']}.#{RbConfig::CONFIG['MINOR']}"
exports << "EXPORTS" << symbols()
exports
end
private
def forwarding(internal, export)
internal.sub(/^[^@]+/, "\\1#{export}")
end
def each_export(objs)
end
def objdump(objs, &block)
if objs.empty?
$stdin.each_line(&block)
else
each_line(objs, &block)
end
end
def symbols()
@syms.sort.collect {|k, v| v ? v == true ? "#{k} DATA" : "#{k}=#{v}" : k}
end
end
class Exports::Mswin < Exports
def each_line(objs, &block)
IO.popen(%w"dumpbin -symbols -exports" + objs) do |f|
f.each(&block)
end
end
def each_export(objs)
noprefix = ($arch ||= nil and /^(sh|i\d86)/ !~ $arch)
objs = objs.collect {|s| s.tr('/', '\\')}
filetype = nil
objdump(objs) do |l|
if filetype
if /^\f/ =~ l
filetype = nil
next
end
case filetype
when /OBJECT/, /LIBRARY/
next if /^[[:xdigit:]]+ 0+ UNDEF / =~ l
next unless /External/ =~ l
next if /(?:_local_stdio_printf_options|v(f|sn?)printf(_s)?_l)\Z/ =~ l
next unless l.sub!(/.*?\s(\(\)\s+)?External\s+\|\s+/, '')
is_data = !$1
if noprefix or /^[@_]/ =~ l
next if /(?!^)@.*@/ =~ l || /@[[:xdigit:]]{8,32}$/ =~ l ||
/^_?#{PrivateNames}/o =~ l
l.sub!(/^[@_]/, '') if /@\d+$/ !~ l
elsif !l.sub!(/^(\S+) \([^@?\`\']*\)$/, '\1')
next
end
when /DLL/
next unless l.sub!(/^\s*\d+\s+[[:xdigit:]]+\s+[[:xdigit:]]+\s+/, '')
else
next
end
yield l.strip, is_data
else
filetype = l[/^File Type: (.+)/, 1]
end
end
yield "strcasecmp", "msvcrt.stricmp"
yield "strncasecmp", "msvcrt.strnicmp"
end
end
class Exports::Cygwin < Exports
def self.nm
@@nm ||= RbConfig::CONFIG["NM"]
end
def exports(*)
super()
end
def each_line(objs, &block)
IO.foreach("|#{self.class.nm} --extern --defined #{objs.join(' ')}", &block)
end
def each_export(objs)
symprefix = RbConfig::CONFIG["SYMBOL_PREFIX"]
symprefix.strip! if symprefix
re = /\s(?:(T)|[[:upper:]])\s#{symprefix}((?!#{PrivateNames}).*)$/
objdump(objs) do |l|
next if /@.*@/ =~ l
yield $2, !$1 if re =~ l
end
end
end
class Exports::Msys < Exports::Cygwin
end
class Exports::Mingw < Exports::Cygwin
def each_export(objs)
super
yield "strcasecmp", "_stricmp"
yield "strncasecmp", "_strnicmp"
end
end
END {
exports = Exports.extract(ARGV)
Exports.output {|f| f.puts(*exports)}
}
|
