ld/testsuite/ld-srec/srec.exp

   1 # Test linking directly to S-records.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 #   Copyright (C) 1999-2021 Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU Binutils.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 # MA 02110-1301, USA.
  21
  22 # Get the offset from an S-record line to the start of the data.
  23
  24 proc srec_off { l } {
  25     if [string match "S1*" $l] {
  26         return 8
  27     } else { if [string match "S2*" $l] {
  28         return 10
  29     } else { if [string match "S3*" $l] {
  30         return 12
  31     } else {
  32         return -1
  33     } } }
  34 }
  35
  36 # See if an S-record line contains only zero data.
  37
  38 proc srec_zero { l } {
  39     if [string match "S\[0789\]*" $l] {
  40         return 1
  41     }
  42
  43     # Strip the address and checksum.
  44     if [string match "S\[123\]*" $l] {
  45         set l [string range $l [srec_off $l] [expr [string length $l] - 3]]
  46     } else {
  47         return 0
  48     }
  49
  50     # The rest must be zero.
  51     return [string match "" [string trim $l "0"]]
  52 }
  53
  54 # Get the address of an S-record line.
  55
  56 proc srec_addr { l } {
  57     if [string match "S\[123\]*" $l] {
  58         set addr [string range $l 4 [expr [srec_off $l] - 1]]
  59     } else {
  60         return -1
  61     }
  62
  63     return "0x$addr"
  64 }
  65
  66 # Get the number of data bytes in an S-record line.
  67
  68 proc srec_len { l } {
  69     if ![string match "S\[123\]*" $l] {
  70         return 0
  71     }
  72
  73     return [expr "0x[string range $l 2 3]" - ([srec_off $l] - 4) / 2 - 1]
  74 }
  75
  76 # Extract bytes from an S-record line.
  77
  78 proc srec_extract { l start len } {
  79     set off [srec_off $l]
  80     set rlen [srec_len $l]
  81     set stop [expr $start + $len]
  82     if { $stop > $rlen } {
  83         set stop [expr $rlen]
  84     }
  85     set start [expr $start * 2 + $off]
  86     set stop [expr $stop * 2 + $off - 1]
  87     return [string range $l $start $stop]
  88 }
  89
  90 # See if a range of bytes in an S-record line is all zeroes.
  91
  92 proc srec_zero_range { l start len } {
  93     return [string match "" [string trim [srec_extract $l $start $len] "0"]]
  94 }
  95
  96 # Trim an S-record line such that the specified number of bytes remain
  97 # at the end.
  98
  99 proc srec_trim { l leave } {
 100     set off [srec_off $l]
 101     set addr [srec_addr $l]
 102     set len [srec_len $l]
 103
 104     if { $leave >= $len } {
 105         return $l
 106     }
 107
 108     set s1 [string range $l 0 1]
 109     set s2 [format "%02x" [expr ($off - 4) / 2 + $leave + 1]]
 110     set s3 [format "%0[expr $off - 4]x" [expr $addr + $len - $leave]]
 111     set s4 [string range $l [expr [string length $l] - ($leave * 2) - 2] end]
 112     set s "${s1}${s2}${s3}${s4}"
 113
 114     verbose "srec_trim { '$l' $leave } returning '$s'" 2
 115
 116     return $s
 117 }
 118
 119 # Report failure when comparing S-record lines
 120
 121 proc srec_compare_fail { which l1 l2 } {
 122     send_log "comparison failure $which:\n$l1\n$l2\n"
 123     verbose "comparison failure $which:\n$l1\n$l2"
 124 }
 125
 126 # Compare S-record files.  We don't want to fuss about things like
 127 # extra zeroes.  Note that BFD always sorts S-records by address.
 128
 129 proc srec_compare { f1 f2 } {
 130     set e1 [gets $f1 l1]
 131     set e2 [gets $f2 l2]
 132
 133     while { $e1 != -1 } {
 134         set l1 [string trimright $l1 "\r\n"]
 135         set l2 [string trimright $l2 "\r\n"]
 136         if { $e2 == -1 } {
 137             # If l1 contains data, it must be zero.
 138             if ![srec_zero $l1] {
 139                 send_log "data after EOF: $l1\n"
 140                 verbose "data after EOF: $l1"
 141                 return 0
 142             }
 143         } else { if { [string compare $l1 $l2] == 0 } {
 144             set e1 [gets $f1 l1]
 145             set e2 [gets $f2 l2]
 146         } else { if { [srec_zero $l1] } {
 147             set e1 [gets $f1 l1]
 148         } else { if { [srec_zero $l2] } {
 149             set e2 [gets $f2 l2]
 150         } else {
 151             # The strings are not the same, and neither is all zeroes.
 152             set a1 [srec_addr $l1]
 153             set n1 [srec_len $l1]
 154             set a2 [srec_addr $l2]
 155             set n2 [srec_len $l2]
 156
 157             if { $a1 < $a2 && ![srec_zero_range $l1 0 [expr $a2 - $a1]] } {
 158                 verbose "$a1 $a2 [srec_extract $l1 0 [expr $a2 - $a1]]" 2
 159                 srec_compare_fail 1 $l1 $l2
 160                 return 0
 161             }
 162             if { $a2 < $a1 && ![srec_zero_range $l2 0 [expr $a1 - $a2]] } {
 163                 srec_compare_fail 2 $l1 $l2
 164                 return 0
 165             }
 166
 167             # Here we know that any initial data in both lines is
 168             # zero.  Now make sure that any overlapping data matches.
 169             if { $a1 < $a2 } {
 170                 set os1 [expr $a2 - $a1]
 171                 set os2 0
 172             } else {
 173                 set os1 0
 174                 set os2 [expr $a1 - $a2]
 175             }
 176             if { $a1 + $n1 < $a2 + $n2 } {
 177                 set ol [expr $n1 - $os1]
 178             } else {
 179                 set ol [expr $n2 - $os2]
 180             }
 181
 182             set x1 [srec_extract $l1 $os1 $ol]
 183             set x2 [srec_extract $l2 $os2 $ol]
 184             if { [string compare $x1 $x2] != 0 } {
 185                 verbose "$os1 $ol $x1" 2
 186                 verbose "$os2 $ol $x2" 2
 187                 srec_compare_fail 3 $l1 $l2
 188                 return 0
 189             }
 190
 191             # These strings match.  Trim the data from the larger
 192             # string, read a new copy of the smaller string, and
 193             # continue.
 194             if { $a1 + $n1 < $a2 + $n2 } {
 195                 set l2 [srec_trim $l2 [expr ($a2 + $n2) - ($a1 + $n1)]]
 196                 set e1 [gets $f1 l1]
 197             } else { if { $a1 + $n1 > $a2 + $n2 } {
 198                 set l1 [srec_trim $l1 [expr ($a1 + $n1) - ($a2 + $n2)]]
 199                 set e2 [gets $f2 l2]
 200             } else {
 201                 set e1 [gets $f1 l1]
 202                 set e2 [gets $f2 l2]
 203             } }
 204         } } } }
 205     }
 206
 207     # We've reached the end of the first file.  The remainder of the
 208     # second file must contain only zeroes.
 209     while { $e2 != -1 } {
 210         set l2 [string trimright $l2 "\r\n"]
 211         if ![srec_zero $l2] {
 212             send_log "data after EOF: $l2\n"
 213             verbose "data after EOF: $l2"
 214             return 0
 215         }
 216         set e2 [gets $f2 l2]
 217     }
 218
 219     return 1
 220 }
 221
 222 # Link twice, objcopy, and compare
 223
 224 proc run_srec_test { test objs } {
 225     global ld
 226     global objcopy
 227     global sizeof_headers
 228     global host_triplet
 229
 230     # Tell the ELF linker to not do anything clever with .eh_frame,
 231     # not to put anything in small data, and define various symbols.
 232     set flags "--traditional-format -G 0 -e 0 "
 233     append flags [ld_link_defsyms]
 234
 235     # If the linker script uses SIZEOF_HEADERS, use a -Ttext argument
 236     # to force both the normal link and the S-record link to be put in
 237     # the same place.  We don't always use -Ttext because it interacts
 238     # poorly with a.out.
 239
 240     if { $sizeof_headers } {
 241         set flags "$flags -Ttext 0x1000"
 242     }
 243
 244     # ARM targets cannot convert format in the linker
 245     # using the --oformat command line switch
 246     if {[istarget aarch64*-*-*] || \
 247         [istarget arm*-*-*]} {
 248         setup_xfail "aarch64-*-*"
 249         setup_xfail "aarch64_be-*-*"
 250         setup_xfail "arm*-*-*"
 251     }
 252
 253     # The AVR target does not correctly process
 254     # relocs when output format is not ELF.
 255     if [istarget avr-*-*] {
 256         setup_xfail "avr-*-*"
 257     }
 258
 259     # Epiphany needs some help too
 260     if [istarget epiphany*-*-*] {
 261         set flags "$flags --defsym _start=00000060"
 262         setup_xfail "epiphany*-*-*"
 263     }
 264
 265     if [istarget m681*-*-*] {
 266         set flags "$flags --defsym _start=0xc000"
 267         setup_xfail "m681*-*-*"
 268     }
 269
 270     if [istarget m68hc1*-*-*] {
 271         set flags "$flags --defsym _start=0xc000"
 272         setup_xfail "m68hc1*-*-*"
 273     }
 274
 275     if [istarget m9s12x*-*-*] {
 276         set flags "$flags --defsym _start=0xc000"
 277         setup_xfail "m9s12x*-*-*"
 278     }
 279
 280     # MSP430 targets always relax.
 281     if [istarget msp430*-*-*] {
 282         setup_xfail "msp430*-*-*"
 283     }
 284
 285     # The RISC-V target does not correctly process
 286     # relocs when output format is not ELF.
 287     if [istarget riscv*-*-*] {
 288         setup_xfail "riscv*-*-*"
 289     }
 290
 291     # V850 targets need libgcc.a
 292     if [istarget v850*-*-elf] {
 293         set objs "$objs -L ../gcc -lgcc"
 294     }
 295
 296     # Xtensa ELF targets relax by default; S-Record linker does not
 297     if [istarget xtensa*-*-*] {
 298         set flags "$flags -no-relax"
 299     }
 300
 301     # PRU ELF target relaxes by default; S-Record linker does not
 302     if [istarget pru*-*-*] {
 303         set flags "$flags -no-relax"
 304     }
 305
 306     if { ![ld_link $ld tmpdir/sr1 "$flags $objs"] \
 307          || ![ld_link $ld tmpdir/sr2.sr "$flags --oformat srec $objs"] } {
 308         fail $test
 309         return
 310     }
 311
 312     send_log "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr\n"
 313     set exec_output [run_host_cmd "$objcopy" "-O srec tmpdir/sr1 tmpdir/sr1.sr"]
 314     set exec_output [prune_warnings $exec_output]
 315     if ![string match "" $exec_output] {
 316         send_log "$exec_output\n"
 317         verbose "$exec_output"
 318         unresolved $test
 319         return
 320     }
 321
 322     set f1 [open tmpdir/sr1.sr r]
 323     set f2 [open tmpdir/sr2.sr r]
 324     if [srec_compare $f1 $f2] {
 325         pass $test
 326     } else {
 327         fail $test
 328     }
 329     close $f1
 330     close $f2
 331 }
 332
 333 set test1 "S-records"
 334 set test2 "S-records with constructors"
 335
 336 # See whether the default linker script uses SIZEOF_HEADERS.
 337 set exec_output [run_host_cmd "$ld" "--verbose"]
 338 set sizeof_headers [string match "*SIZEOF_HEADERS*" $exec_output]
 339
 340 # First test linking a C program.  We don't require any libraries.  We
 341 # link it normally, and objcopy to the S-record format, and then link
 342 # directly to the S-record format, and require that the two files
 343 # contain the same data.
 344
 345 if { ![check_compiler_available] } {
 346     untested $test1
 347     untested $test2
 348     return
 349 }
 350
 351 # Pass -fplt to CC and CXX since -fno-plt doesn't work with S-records
 352 # tests. Also add $NOPIE_CFLAGS and $NOPIE_LDFLAGS if PIE doesn't work
 353 # with S-records.  Also add $NOCF_PROTECTION_CFLAGS for S-records.
 354 # Also add $NOSANITIZE_CFLAGS for S-records.
 355 set old_CC "$CC"
 356 set CC "$CC $PLT_CFLAGS $NOPIE_CFLAGS $NOPIE_LDFLAGS $NOCF_PROTECTION_CFLAGS $NOSANITIZE_CFLAGS $NOLTO_CFLAGS"
 357 set old_CXX "$CXX"
 358 set old_CXXFLAGS "$CXXFLAGS"
 359 set CXXFLAGS "$CXXFLAGS $PLT_CFLAGS $NOPIE_CFLAGS $NOPIE_LDFLAGS $NOCF_PROTECTION_CFLAGS $NOSANITIZE_CFLAGS $NOLTO_CFLAGS"
 360
 361 # S-records can't handle .note.gnu.property sections.
 362 if { [is_elf_format] \
 363      && ([istarget "i?86-*-*"] || [istarget "x86_64-*-*"]) } {
 364     set CC "$CC -Wa,-mx86-used-note=no"
 365     set CXX "$CXX -Wa,-mx86-used-note=no"
 366 }
 367
 368 if { ![ld_compile $CC $srcdir/$subdir/sr1.c tmpdir/sr1.o] \
 369      || ![ld_compile $CC $srcdir/$subdir/sr2.c tmpdir/sr2.o] } {
 370     unresolved $test1
 371     unresolved $test2
 372     set CC "$old_CC"
 373     set CXX "$old_CXX"
 374     set CXXFLAGS "$old_CXXFLAGS"
 375     return
 376 }
 377
 378 # The i386-aout target is confused: the linker does not put the
 379 # sections where objdump finds them.  I don't know which is wrong.
 380 setup_xfail "i*86-*-aout*"
 381
 382 # These tests fail on the native MIPS ELF targets because the GP value
 383 # in the .reginfo section is not updated when the S-record version is
 384 # written out.  The mips-elf target itself does not use a .reginfo section.
 385 setup_xfail "mips*-*-irix5*" "mips*-*-irix6*" "mips*-*-linux*"
 386
 387 # The S-record linker doesn't do the magic TOC handling that XCOFF
 388 # linkers do.
 389 if [is_xcoff_format] {
 390     setup_xfail *-*-*
 391 }
 392
 393 # The S-record linker is not supported for ARC.
 394 setup_xfail "arc*-*-*"
 395
 396 # The S-record linker doesn't build ARM/Thumb stubs.
 397 setup_xfail "arm-*-coff"
 398 setup_xfail "arm-*-pe*"
 399 # setup_xfail "arm-*elf*"
 400 setup_xfail "arm*-*-linux*"
 401
 402 # The S-record linker doesn't include the .{zda} sections.
 403 setup_xfail "v850*-*-elf"
 404
 405 # The S-record linker doesn't handle Alpha Elf relaxation.
 406 setup_xfail "alpha*-*-elf*" "alpha*-*-linux-*" "alpha*-*-gnu*"
 407 setup_xfail "alpha*-*-netbsd*"
 408
 409 # The S-record linker hasn't any hope of coping with HPPA relocs.
 410 # Or MeP complex relocs.
 411 setup_xfail "hppa*-*-*" "mep-*-*"
 412
 413 # The S-record linker doesn't handle IA64 Elf relaxation.
 414 setup_xfail "ia64-*-*"
 415
 416 # The S-record linker doesn't support the special PE headers - the PE
 417 # emulation tries to write pe-specific information to the PE headers
 418 # in the output bfd, but it's not a PE bfd (it's an srec bfd)
 419 setup_xfail "*-*-cygwin*" "*-*-mingw*" "*-*-pe*" "*-*-winnt*"
 420 setup_xfail "score-*-*"
 421
 422 # The S-record linker doesn't support Blackfin ELF FDPIC ABI.
 423 setup_xfail "bfin-*-linux-uclibc"
 424
 425 # On tile, we appear to be getting some random-seeming zeroing or 24-bit
 426 # rightshifts (!) in the output when directly generating S-records from
 427 # the linker.  Not clear what could be causing this but we don't
 428 # anticipate creating s-records (and could always use objcopy to
 429 # generate the format if need be).
 430 setup_xfail "tile*-*-*"
 431
 432 # The S-record linker is not supported for C-SKY.
 433 setup_xfail "csky*-*-*"
 434
 435 # The S-record linker is not supported for eBPF.
 436 setup_xfail "bpf-*-*"
 437
 438 run_srec_test $test1 "tmpdir/sr1.o tmpdir/sr2.o"
 439
 440 # Now try linking a C++ program with global constructors and
 441 # destructors.  Note that since we are not linking against any
 442 # libraries, this program won't actually work or anything.
 443
 444 if { ![is_remote host] && [which $CXX] == 0 } {
 445     untested $test2
 446     set CC "$old_CC"
 447     set CXX "$old_CXX"
 448     set CXXFLAGS "$old_CXXFLAGS"
 449     return
 450 }
 451
 452 if ![ld_compile "$CXX $CXXFLAGS -fno-exceptions" $srcdir/$subdir/sr3.cc tmpdir/sr3.o] {
 453     unresolved $test2
 454     set CC "$old_CC"
 455     set CXX "$old_CXX"
 456     set CXXFLAGS "$old_CXXFLAGS"
 457     return
 458 }
 459
 460 # See above.
 461 setup_xfail "i*86-*-aout*"
 462 setup_xfail "mips*-*-irix5*" "mips*-*-irix6*" "mips*-*-linux*"
 463 if [is_xcoff_format] {
 464     setup_xfail *-*-*
 465 }
 466 setup_xfail "arc*-*-*"
 467 setup_xfail "arm*-*-*"
 468 setup_xfail "v850*-*-elf"
 469 setup_xfail "alpha*-*-elf*" "alpha*-*-linux-*" "alpha*-*-gnu*"
 470 setup_xfail "alpha*-*-netbsd*"
 471 setup_xfail "hppa*-*-*" "mep-*-*"
 472 setup_xfail "ia64-*-*"
 473 setup_xfail "*-*-cygwin*" "*-*-mingw*" "*-*-pe*" "*-*-winnt*"
 474 setup_xfail "score-*-*"
 475 setup_xfail "bfin-*-linux-uclibc"
 476 setup_xfail "tile*-*-*"
 477 setup_xfail "csky*-*-*"
 478 setup_xfail "bpf-*-*"
 479
 480 run_srec_test $test2 "tmpdir/sr3.o"
 481
 482 set CC "$old_CC"
 483 set CXX "$old_CXX"
 484 set CXXFLAGS "$old_CXXFLAGS"