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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
|
# Test linking directly to S-records.
# By Ian Lance Taylor, Cygnus Support.
# Copyright 2001, 2002, 2003
# Free Software Foundation, Inc.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Get the offset from an S-record line to the start of the data.
proc srec_off { l } {
if [string match "S1*" $l] {
return 8
} else { if [string match "S2*" $l] {
return 10
} else { if [string match "S3*" $l] {
return 12
} else {
return -1
} } }
}
# See if an S-record line contains only zero data.
proc srec_zero { l } {
if [string match "S\[0789\]*" $l] {
return 1
}
# Strip the address and checksum.
if [string match "S\[123\]*" $l] {
set l [string range $l [srec_off $l] [expr [string length $l] - 3]]
} else {
return 0
}
# The rest must be zero.
return [string match "" [string trim $l "0"]]
}
# Get the address of an S-record line.
proc srec_addr { l } {
if [string match "S\[123\]*" $l] {
set addr [string range $l 4 [expr [srec_off $l] - 1]]
} else {
return -1
}
return "0x$addr"
}
# Get the number of data bytes in an S-record line.
proc srec_len { l } {
if ![string match "S\[123\]*" $l] {
return 0
}
return [expr "0x[string range $l 2 3]" - ([srec_off $l] - 4) / 2 - 1]
}
# Extract bytes from an S-record line.
proc srec_extract { l start len } {
set off [srec_off $l]
set rlen [srec_len $l]
set stop [expr $start + $len]
if { $stop > $rlen } {
set stop [expr $rlen]
}
set start [expr $start * 2 + $off]
set stop [expr $stop * 2 + $off - 1]
return [string range $l $start $stop]
}
# See if a range of bytes in an S-record line is all zeroes.
proc srec_zero_range { l start len } {
return [string match "" [string trim [srec_extract $l $start $len] "0"]]
}
# Trim an S-record line such that the specified number of bytes remain
# at the end.
proc srec_trim { l leave } {
set off [srec_off $l]
set addr [srec_addr $l]
set len [srec_len $l]
if { $leave >= $len } {
return $l
}
set s1 [string range $l 0 1]
set s2 [format "%02x" [expr ($off - 4) / 2 + $leave + 1]]
set s3 [format "%0[expr $off - 4]x" [expr $addr + $len - $leave]]
set s4 [string range $l [expr [string length $l] - ($leave * 2) - 2] end]
set s "${s1}${s2}${s3}${s4}"
verbose "srec_trim { '$l' $leave } returning '$s'" 2
return $s
}
# Report failure when comparing S-record lines
proc srec_compare_fail { which l1 l2 } {
send_log "comparison failure $which:\n$l1\n$l2\n"
verbose "comparison failure $which:\n$l1\n$l2"
}
# Compare S-record files. We don't want to fuss about things like
# extra zeroes. Note that BFD always sorts S-records by address.
proc srec_compare { f1 f2 } {
set e1 [gets $f1 l1]
set e2 [gets $f2 l2]
while { $e1 != -1 } {
set l1 [string trimright $l1 "\r\n"]
set l2 [string trimright $l2 "\r\n"]
if { $e2 == -1 } {
# If l1 contains data, it must be zero.
if ![srec_zero $l1] {
send_log "data after EOF: $l1\n"
verbose "data after EOF: $l1"
return 0
}
} else { if { [string compare $l1 $l2] == 0 } {
set e1 [gets $f1 l1]
set e2 [gets $f2 l2]
} else { if { [srec_zero $l1] } {
set e1 [gets $f1 l1]
} else { if { [srec_zero $l2] } {
set e2 [gets $f2 l2]
} else {
# The strings are not the same, and neither is all zeroes.
set a1 [srec_addr $l1]
set n1 [srec_len $l1]
set a2 [srec_addr $l2]
set n2 [srec_len $l2]
if { $a1 < $a2 && ![srec_zero_range $l1 0 [expr $a2 - $a1]] } {
verbose "$a1 $a2 [srec_extract $l1 0 [expr $a2 - $a1]]" 2
srec_compare_fail 1 $l1 $l2
return 0
}
if { $a2 < $a1 && ![srec_zero_range $l2 0 [expr $a1 - $a2]] } {
srec_compare_fail 2 $l1 $l2
return 0
}
# Here we know that any initial data in both lines is
# zero. Now make sure that any overlapping data matches.
if { $a1 < $a2 } {
set os1 [expr $a2 - $a1]
set os2 0
} else {
set os1 0
set os2 [expr $a1 - $a2]
}
if { $a1 + $n1 < $a2 + $n2 } {
set ol [expr $n1 - $os1]
} else {
set ol [expr $n2 - $os2]
}
set x1 [srec_extract $l1 $os1 $ol]
set x2 [srec_extract $l2 $os2 $ol]
if { [string compare $x1 $x2] != 0 } {
verbose "$os1 $ol $x1" 2
verbose "$os2 $ol $x2" 2
srec_compare_fail 3 $l1 $l2
return 0
}
# These strings match. Trim the data from the larger
# string, read a new copy of the smaller string, and
# continue.
if { $a1 + $n1 < $a2 + $n2 } {
set l2 [srec_trim $l2 [expr ($a2 + $n2) - ($a1 + $n1)]]
set e1 [gets $f1 l1]
} else { if { $a1 + $n1 > $a2 + $n2 } {
set l1 [srec_trim $l1 [expr ($a1 + $n1) - ($a2 + $n2)]]
set e2 [gets $f2 l2]
} else {
set e1 [gets $f1 l1]
set e2 [gets $f2 l2]
} }
} } } }
}
# We've reached the end of the first file. The remainder of the
# second file must contain only zeroes.
while { $e2 != -1 } {
set l2 [string trimright $l2 "\r\n"]
if ![srec_zero $l2] {
send_log "data after EOF: $l2\n"
verbose "data after EOF: $l2"
return 0
}
set e2 [gets $f2 l2]
}
return 1
}
# Link twice, objcopy, and compare
proc run_srec_test { test objs } {
global ld
global objcopy
global sizeof_headers
global host_triplet
# Tell the ELF linker to not do anything clever with .eh_frame.
set flags "--traditional-format"
# If the linker script uses SIZEOF_HEADERS, use a -Ttext argument
# to force both the normal link and the S-record link to be put in
# the same place. We don't always use -Ttext because it interacts
# poorly with a.out.
if { $sizeof_headers } {
set flags "$flags -Ttext 0x1000"
}
# The a29k compiled code calls V_SPILL and V_FILL. Since we don't
# need to run this code, but we don't have definitions for those
# functions, we just define them out.
if [istarget a29k*-*-*] {
set flags "$flags --defsym V_SPILL=0 --defsym V_FILL=0"
}
if [istarget sh64*-*-elf] {
# This is what gcc passes to ld by default.
set flags "-mshelf32"
# SH64 targets cannot convert format in the linker
# using the -oformat command line switch.
setup_xfail "sh64*-*-*"
}
if {[istarget arm*-*-*] || \
[istarget strongarm*-*-*] || \
[istarget xscale*-*-*] || \
[istarget thumb-*-*] } {
# ARM targets call __gccmain
set flags "$flags --defsym __gccmain=0"
# ARM targets cannot convert format in the linker
# using the --oformat command line switch
setup_xfail "*arm*-*-*"
setup_xfail "xscale-*-*"
setup_xfail "thumb-*-*"
}
# PowerPC EABI code calls __eabi.
if [istarget powerpc*-*-eabi*] {
set flags "$flags --defsym __eabi=0"
}
# mn10200 code calls __truncsipsi2_d0_d2.
if {[istarget mn10200*-*-*]} then {
set flags "$flags --defsym __truncsipsi2_d0_d2=0"
}
# m6811/m6812 code has references to soft registers.
if {[istarget m6811-*-*] || [istarget m6812-*-*]} {
set flags "$flags --defsym _.frame=0 --defsym _.d1=0 --defsym _.d2=0"
set flags "$flags --defsym _.d3=0 --defsym _.d4=0"
set flags "$flags --defsym _.tmp=0 --defsym _.xy=0 --defsym _.z=0"
}
# V850 targets need libgcc.a
if [istarget v850*-*-elf] {
set objs "$objs -L ../gcc -lgcc"
}
# Xtensa ELF targets relax by default; S-Record linker does not
if [istarget xtensa*-*-*] {
set flags "$flags -no-relax"
}
if { ![ld_simple_link $ld tmpdir/sr1 "$flags $objs"] \
|| ![ld_simple_link $ld tmpdir/sr2.sr "$flags --oformat srec $objs"] } {
fail $test
return
}
send_log "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr\n"
verbose "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr"
catch "exec $objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr" exec_output
set exec_output [prune_warnings $exec_output]
if ![string match "" $exec_output] {
send_log "$exec_output\n"
verbose "$exec_output"
unresolved $test
return
}
set f1 [open tmpdir/sr1.sr r]
set f2 [open tmpdir/sr2.sr r]
if [srec_compare $f1 $f2] {
pass $test
} else {
fail $test
}
close $f1
close $f2
}
set test1 "S-records"
set test2 "S-records with constructors"
# See whether the default linker script uses SIZEOF_HEADERS.
catch "exec $ld --verbose" exec_output
set sizeof_headers [string match "*SIZEOF_HEADERS*" $exec_output]
# First test linking a C program. We don't require any libraries. We
# link it normally, and objcopy to the S-record format, and then link
# directly to the S-record format, and require that the two files
# contain the same data.
if { [which $CC] == 0 } {
untested $test1
untested $test2
return
}
if { ![ld_compile $CC $srcdir/$subdir/sr1.c tmpdir/sr1.o] \
|| ![ld_compile $CC $srcdir/$subdir/sr2.c tmpdir/sr2.o] } {
unresolved $test1
unresolved $test2
return
}
# The i386-aout target is confused: the linker does not put the
# sections where objdump finds them. I don't know which is wrong.
setup_xfail "i*86-*-aout*"
# These tests fail on the native MIPS ELF targets because the GP value
# in the .reginfo section is not updated when the S-record version is
# written out. The mips-elf target itself does not use a .reginfo section.
setup_xfail "mips*-*-irix5*" "mips*-*-irix6*" "mips*-*-linux*"
# The S-record linker doesn't do the magic TOC handling that XCOFF
# linkers do.
setup_xfail "*-*-aix*" "*-*-xcoff*"
# The S-record linker doesn't build ARM/Thumb stubs.
setup_xfail "arm-*-coff"
setup_xfail "strongarm*-*-coff"
setup_xfail "xscale*-*-coff"
setup_xfail "arm-*-pe*"
# setup_xfail "arm-*elf*"
setup_xfail "thumb-*-coff*"
setup_xfail "thumb-*-pe*"
setup_xfail "thumb-*-elf*"
setup_xfail "arm*-*-linux*"
# The S-record linker doesn't build special EABI sections.
# setup_xfail "powerpc*-*-eabi*"
# The S-record linker doesn't include the .{zda} sections.
setup_xfail "v850*-*-elf"
# The S-record linker doesn't handle Alpha Elf relaxation.
setup_xfail "alpha*-*-elf*" "alpha*-*-linux-gnu*" "alpha*-*-gnu*"
setup_xfail "alpha*-*-netbsd*"
# The S-record linker hasn't any hope of coping with HPPA relocs.
setup_xfail "hppa*-*-*"
# The S-record linker doesn't handle IA64 Elf relaxation.
setup_xfail "ia64-*-*"
# The S-record linker doesn't support the special PE headers - the PE
# emulation tries to write pe-specific information to the PE headers
# in the output bfd, but it's not a PE bfd (it's an srec bfd)
setup_xfail "*-*-cygwin*" "*-*-mingw*" "*-*-pe*" "*-*-winnt*"
run_srec_test $test1 "tmpdir/sr1.o tmpdir/sr2.o"
# Now try linking a C++ program with global constructors and
# destructors. Note that since we are not linking against any
# libraries, this program won't actually work or anything.
if { [which $CXX] == 0 } {
untested $test2
return
}
if ![ld_compile "$CXX $CXXFLAGS -fno-exceptions" $srcdir/$subdir/sr3.cc tmpdir/sr3.o] {
unresolved $test2
return
}
# See above.
setup_xfail "i*86-*-aout*"
setup_xfail "mips*-*-irix5*" "mips*-*-irix6*" "mips*-*-linux*"
setup_xfail "*-*-aix*" "*-*-xcoff*"
setup_xfail "arm*-*-*"
setup_xfail "strongarm*-*-*"
setup_xfail "thumb-*-*"
setup_xfail "powerpc*-*-eabi*"
setup_xfail "v850*-*-elf"
setup_xfail "alpha*-*-elf*" "alpha*-*-linux-gnu*" "alpha*-*-gnu*"
setup_xfail "alpha*-*-netbsd*"
setup_xfail "hppa*-*-*"
setup_xfail "ia64-*-*"
setup_xfail "*-*-cygwin*" "*-*-mingw*" "*-*-pe*" "*-*-winnt*"
run_srec_test $test2 "tmpdir/sr3.o"
|