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1 | # ========== Copyright Header Begin ========================================== |
2 | # | |
3 | # OpenSPARC T2 Processor File: Segment.pm | |
4 | # Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
5 | # 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
6 | # | |
7 | # * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
8 | # | |
9 | # This program is free software; you can redistribute it and/or modify | |
10 | # it under the terms of the GNU General Public License as published by | |
11 | # the Free Software Foundation; version 2 of the License. | |
12 | # | |
13 | # This program is distributed in the hope that it will be useful, | |
14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | # GNU General Public License for more details. | |
17 | # | |
18 | # You should have received a copy of the GNU General Public License | |
19 | # along with this program; if not, write to the Free Software | |
20 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | # | |
22 | # For the avoidance of doubt, and except that if any non-GPL license | |
23 | # choice is available it will apply instead, Sun elects to use only | |
24 | # the General Public License version 2 (GPLv2) at this time for any | |
25 | # software where a choice of GPL license versions is made | |
26 | # available with the language indicating that GPLv2 or any later version | |
27 | # may be used, or where a choice of which version of the GPL is applied is | |
28 | # otherwise unspecified. | |
29 | # | |
30 | # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
31 | # CA 95054 USA or visit www.sun.com if you need additional information or | |
32 | # have any questions. | |
33 | # | |
34 | # ========== Copyright Header End ============================================ | |
35 | # -*- perl -*- | |
36 | ||
37 | package Midas::Segment; | |
38 | use strict; | |
39 | use warnings; | |
40 | use Carp; | |
41 | use Tie::IxHash; | |
42 | use Midas::Command; | |
43 | use Midas::Error; | |
44 | ||
45 | use fields qw(type); | |
46 | ||
47 | use constant | |
48 | { | |
49 | SEG_UNDEF => 0, | |
50 | SEG_TEXT => 1, | |
51 | SEG_DATA => 2, | |
52 | SEG_BSS => 3, | |
53 | }; | |
54 | ||
55 | require Exporter; | |
56 | ||
57 | our @ISA = qw(Exporter); | |
58 | our @EXPORT = qw(SEG_UNDEF SEG_TEXT SEG_DATA SEG_BSS); | |
59 | ||
60 | ||
61 | ||
62 | our %Segments = | |
63 | ( | |
64 | SEG_TEXT() => { | |
65 | name => 'text', | |
66 | link_suffix => 't', | |
67 | va_name => 'text_va', | |
68 | elfname => '.text', | |
69 | include_elf => [qw(.rodata)], | |
70 | elfname_out => '.text .rodata', | |
71 | }, | |
72 | SEG_DATA() => { | |
73 | name => 'data', | |
74 | link_suffix => 'd', | |
75 | va_name => 'data_va', | |
76 | elfname => '.data', | |
77 | }, | |
78 | SEG_BSS() => { | |
79 | name => 'bss', | |
80 | link_suffix => 'b', | |
81 | va_name => 'bss_va', | |
82 | elfname => '.bss', | |
83 | }, | |
84 | ); | |
85 | ||
86 | ||
87 | ||
88 | our %RevNames = map { ( $Segments{$_}{name}, $_) } keys %Segments; | |
89 | our %ElfNames = map | |
90 | { defined $Segments{$_}{elfname} ? | |
91 | ( $Segments{$_}{elfname}, $Segments{$_}{name} ) : () } keys %Segments; | |
92 | ||
93 | foreach my $code (keys %Segments) { | |
94 | next unless exists $Segments{$code}{include_elf}; | |
95 | foreach my $included (@{$Segments{$code}{include_elf}}) { | |
96 | $ElfNames{$included} = $Segments{$code}{name}; | |
97 | } | |
98 | } | |
99 | ||
100 | our %LinkSuffixes = map | |
101 | { ( $Segments{$_}{link_suffix}, $Segments{$_}{name} ) } keys %Segments; | |
102 | ||
103 | # rodata must appear before text or the linker will merge them | |
104 | #our @Names = qw(rodata text data bss); | |
105 | our @Names = qw(text data bss); | |
106 | ||
107 | my @keys = keys %Segments; | |
108 | if(@keys > @Names) { | |
109 | fatal "In Midas::Segment, @Names is incomplete.\n", M_CODE; | |
110 | } elsif(@Names > @keys) { | |
111 | fatal "In Midas::Segment, @Names has extra entry\n", M_CODE; | |
112 | } | |
113 | foreach my $name (@Names) { | |
114 | fatal "Segment name '$name' is not set up correctly in Midas::Segment\n", | |
115 | M_CODE unless exists $RevNames{$name}; | |
116 | } | |
117 | ||
118 | ############################################################################### | |
119 | ||
120 | sub new { | |
121 | my $class = shift; | |
122 | my $type = shift; | |
123 | ||
124 | $type = $class->name2type($type) if $type =~ /[a-zA-Z]/; | |
125 | ||
126 | my $this; | |
127 | if(ref $class) { | |
128 | my $classtype = ref $class; | |
129 | $this = fields::new($classtype); | |
130 | $this->{type} = $class->type() if defined $class->type(); | |
131 | } else { | |
132 | $this = fields::new($class); | |
133 | $this->{type} = $type if defined $type; | |
134 | } | |
135 | return $this; | |
136 | } | |
137 | ||
138 | ############################################################################### | |
139 | ||
140 | sub type { | |
141 | my $this = shift; | |
142 | my $set = shift; | |
143 | ||
144 | if(defined $set) { | |
145 | fatal Carp::longmess("No such segment type '$set'.\n"), M_CODE | |
146 | unless exists $Segments{$set}{name}; | |
147 | $this->{type} = $set; | |
148 | } | |
149 | return $this->{type}; | |
150 | } | |
151 | ||
152 | ############################################################################### | |
153 | ||
154 | sub name { | |
155 | my $this = shift; | |
156 | my $set = shift; | |
157 | ||
158 | if(defined $set) { | |
159 | $this->type($this->name2type($set)); | |
160 | } | |
161 | return $this->type2name($this->{type}); | |
162 | } | |
163 | ||
164 | ############################################################################### | |
165 | ############################################################################### | |
166 | ||
167 | sub is_segment_name { | |
168 | my $class = shift; | |
169 | my $name = shift; | |
170 | ||
171 | return 1 if exists $RevNames{$name}; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | ############################################################################### | |
176 | ||
177 | sub name2type { | |
178 | my $class = shift; | |
179 | my $name = shift; | |
180 | ||
181 | fatal Carp::longmess("No such segment name '$name'.\n"), M_CODE | |
182 | unless exists $RevNames{$name}; | |
183 | ||
184 | return $RevNames{$name}; | |
185 | } | |
186 | ||
187 | ############################################################################### | |
188 | ||
189 | sub name2va_name { | |
190 | my $class = shift; | |
191 | my $name = shift; | |
192 | ||
193 | fatal Carp::longmess("No such segment name '$name'.\n"), M_CODE | |
194 | unless exists $RevNames{$name}; | |
195 | ||
196 | return $Segments{$RevNames{$name}}{va_name}; | |
197 | } | |
198 | ||
199 | ############################################################################### | |
200 | ||
201 | sub name2elf_name { | |
202 | my $class = shift; | |
203 | my $name = shift; | |
204 | ||
205 | fatal Carp::longmess("No such segment name '$name'.\n"), M_CODE | |
206 | unless exists $RevNames{$name}; | |
207 | ||
208 | return exists $Segments{$RevNames{$name}}{elfname_out} ? | |
209 | $Segments{$RevNames{$name}}{elfname_out} : | |
210 | $Segments{$RevNames{$name}}{elfname}; | |
211 | } | |
212 | ||
213 | ############################################################################### | |
214 | ||
215 | sub name2link_suffix { | |
216 | my $class = shift; | |
217 | my $name = shift; | |
218 | ||
219 | fatal Carp::longmess("No such segment name '$name'.\n"), M_CODE | |
220 | unless exists $RevNames{$name}; | |
221 | ||
222 | return $Segments{$RevNames{$name}}{link_suffix}; | |
223 | } | |
224 | ||
225 | ############################################################################### | |
226 | ||
227 | sub type2name { | |
228 | my $class = shift; | |
229 | my $type = shift; | |
230 | ||
231 | fatal Carp::longmess("No such segment type '$type'.\n"), M_CODE | |
232 | unless exists $Segments{$type}{name}; | |
233 | ||
234 | return $Segments{$type}{name}; | |
235 | } | |
236 | ||
237 | ############################################################################### | |
238 | ||
239 | sub all_names { | |
240 | my $class = shift; | |
241 | return @Names; | |
242 | } | |
243 | ||
244 | ############################################################################### | |
245 | ||
246 | sub all_va_names { | |
247 | my $class = shift; | |
248 | return map { $Segments{$_}{va_name} } keys %Segments; | |
249 | } | |
250 | ||
251 | ############################################################################### | |
252 | ############################################################################### | |
253 | 1; |