ld/testsuite/ld-srec/srec.exp

   1 # Test linking directly to S-records.
   2 # By Ian Lance Taylor, Cygnus Support.
   3 # Public domain.
   4
   5 # Get the offset from an S-record line to the start of the data.
   6
   7 proc srec_off { l } {
   8     if [string match "S1*" $l] {
   9         return 8
  10     } else { if [string match "S2*" $l] {
  11         return 10
  12     } else { if [string match "S3*" $l] {
  13         return 12
  14     } else {
  15         return -1
  16     } } }
  17 }
  18
  19 # See if an S-record line contains only zero data.
  20
  21 proc srec_zero { l } {
  22     if [string match "S\[0789\]*" $l] {
  23         return 1
  24     }
  25
  26     # Strip the address and checksum.
  27     if [string match "S\[123\]*" $l] {
  28         set l [string range $l [srec_off $l] [expr [string length $l] - 3]]
  29     } else {
  30         return 0
  31     }
  32
  33     # The rest must be zero.
  34     return [string match "" [string trim $l "0"]]
  35 }
  36
  37 # Get the address of an S-record line.
  38
  39 proc srec_addr { l } {
  40     if [string match "S\[123\]*" $l] {
  41         set addr [string range $l 4 [expr [srec_off $l] - 1]]
  42     } else {
  43         return -1
  44     }
  45
  46     return "0x$addr"
  47 }
  48
  49 # Get the number of data bytes in an S-record line.
  50
  51 proc srec_len { l } {
  52     if ![string match "S\[123\]*" $l] {
  53         return 0
  54     }
  55
  56     return [expr "0x[string range $l 2 3]" - ([srec_off $l] - 4) / 2 - 1]
  57 }
  58
  59 # Extract bytes from an S-record line.
  60
  61 proc srec_extract { l start len } {
  62     set off [srec_off $l]
  63     set rlen [srec_len $l]
  64     set stop [expr $start + $len]
  65     if { $stop > $rlen } {
  66         set stop [expr $rlen]
  67     }
  68     set start [expr $start * 2 + $off]
  69     set stop [expr $stop * 2 + $off - 1]
  70     return [string range $l $start $stop]
  71 }
  72
  73 # See if a range of bytes in an S-record line is all zeroes.
  74
  75 proc srec_zero_range { l start len } {
  76     return [string match "" [string trim [srec_extract $l $start $len] "0"]]
  77 }
  78
  79 # Trim an S-record line such that the specified number of bytes remain
  80 # at the end.
  81
  82 proc srec_trim { l leave } {
  83     set off [srec_off $l]
  84     set addr [srec_addr $l]
  85     set len [srec_len $l]
  86
  87     if { $leave >= $len } {
  88         return $l
  89     }
  90
  91     set s1 [string range $l 0 1]
  92     set s2 [format "%02x" [expr ($off - 4) / 2 + $leave + 1]]
  93     set s3 [format "%0[expr $off - 4]x" [expr $addr + $len - $leave]]
  94     set s4 [string range $l [expr [string length $l] - ($leave * 2) - 2] end]
  95     set s "${s1}${s2}${s3}${s4}"
  96
  97     verbose "srec_trim { '$l' $leave } returning '$s'" 2
  98
  99     return $s
 100 }
 101
 102 # Report failure when comparing S-record lines
 103
 104 proc srec_compare_fail { which l1 l2 } {
 105     send_log "comparison failure $which:\n$l1\n$l2\n"
 106     verbose "comparison failure $which:\n$l1\n$l2"
 107 }
 108
 109 # Compare S-record files.  We don't want to fuss about things like
 110 # extra zeroes.  Note that BFD always sorts S-records by address.
 111
 112 proc srec_compare { f1 f2 } {
 113     set e1 [gets $f1 l1]
 114     set e2 [gets $f2 l2]
 115
 116     while { $e1 != -1 } {
 117         set l1 [string trimright $l1 "\r\n"]
 118         set l2 [string trimright $l2 "\r\n"]
 119         if { $e2 == -1 } {
 120             # If l1 contains data, it must be zero.
 121             if ![srec_zero $l1] {
 122                 send_log "data after EOF: $l1\n"
 123                 verbose "data after EOF: $l1"
 124                 return 0
 125             }
 126         } else { if { [string compare $l1 $l2] == 0 } {
 127             set e1 [gets $f1 l1]
 128             set e2 [gets $f2 l2]
 129         } else { if { [srec_zero $l1] } {
 130             set e1 [gets $f1 l1]
 131         } else { if { [srec_zero $l2] } {
 132             set e2 [gets $f2 l2]
 133         } else {
 134             # The strings are not the same, and neither is all zeroes.
 135             set a1 [srec_addr $l1]
 136             set n1 [srec_len $l1]
 137             set a2 [srec_addr $l2]
 138             set n2 [srec_len $l2]
 139
 140             if { $a1 < $a2 && ![srec_zero_range $l1 0 [expr $a2 - $a1]] } {
 141                 verbose "$a1 $a2 [srec_extract $l1 0 [expr $a2 - $a1]]" 2
 142                 srec_compare_fail 1 $l1 $l2
 143                 return 0
 144             }
 145             if { $a2 < $a1 && ![srec_zero_range $l2 0 [expr $a1 - $a2]] } {
 146                 srec_compare_fail 2 $l1 $l2
 147                 return 0
 148             }
 149
 150             # Here we know that any initial data in both lines is
 151             # zero.  Now make sure that any overlapping data matches.
 152             if { $a1 < $a2 } {
 153                 set os1 [expr $a2 - $a1]
 154                 set os2 0
 155             } else {
 156                 set os1 0
 157                 set os2 [expr $a1 - $a2]
 158             }
 159             if { $a1 + $n1 < $a2 + $n2 } {
 160                 set ol [expr $n1 - $os1]
 161             } else {
 162                 set ol [expr $n2 - $os2]
 163             }
 164
 165             set x1 [srec_extract $l1 $os1 $ol]
 166             set x2 [srec_extract $l2 $os2 $ol]
 167             if { [string compare $x1 $x2] != 0 } {
 168                 verbose "$os1 $ol $x1" 2
 169                 verbose "$os2 $ol $x2" 2
 170                 srec_compare_fail 3 $l1 $l2
 171                 return 0
 172             }
 173
 174             # These strings match.  Trim the data from the larger
 175             # string, read a new copy of the smaller string, and
 176             # continue.
 177             if { $a1 + $n1 < $a2 + $n2 } {
 178                 set l2 [srec_trim $l2 [expr ($a2 + $n2) - ($a1 + $n1)]]
 179                 set e1 [gets $f1 l1]
 180             } else { if { $a1 + $n1 > $a2 + $n2 } {
 181                 set l1 [srec_trim $l1 [expr ($a1 + $n1) - ($a2 + $n2)]]
 182                 set e2 [gets $f2 l2]
 183             } else {
 184                 set e1 [gets $f1 l1]
 185                 set e2 [gets $f2 l2]
 186             } }
 187         } } } }
 188     }
 189
 190     # We've reached the end of the first file.  The remainder of the
 191     # second file must contain only zeroes.
 192     while { $e2 != -1 } {
 193         set l2 [string trimright $l2 "\r\n"]
 194         if ![srec_zero $l2] {
 195             send_log "data after EOF: $l2\n"
 196             verbose "data after EOF: $l2"
 197             return 0
 198         }
 199         set e2 [gets $f2 l2]
 200     }
 201
 202     return 1
 203 }
 204
 205 # Link twice, objcopy, and compare
 206
 207 proc run_srec_test { test objs } {
 208     global ld
 209     global objcopy
 210     global sizeof_headers
 211     global host_triplet
 212
 213     set flags ""
 214
 215     # If the linker script uses SIZEOF_HEADERS, use a -Ttext argument
 216     # to force both the normal link and the S-record link to be put in
 217     # the same place.  We don't always use -Ttext because it interacts
 218     # poorly with a.out.
 219
 220     if { $sizeof_headers } {
 221         set flags "$flags -Ttext 0x1000"
 222     }
 223
 224     # The a29k compiled code calls V_SPILL and V_FILL.  Since we don't
 225     # need to run this code, but we don't have definitions for those
 226     # functions, we just define them out.
 227     if [istarget a29k*-*-*] {
 228         set flags "$flags --defsym V_SPILL=0 --defsym V_FILL=0"
 229     }
 230
 231     if { ![ld_simple_link $ld tmpdir/sr1 "$flags $objs"] \
 232          || ![ld_simple_link $ld tmpdir/sr2.sr "$flags -oformat srec $objs"] } {
 233         fail $test
 234         return
 235     }
 236
 237     send_log "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr\n"
 238     verbose "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr"
 239     catch "exec $objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr" exec_output
 240     set exec_output [prune_system_crud $host_triplet $exec_output]
 241     if ![string match "" $exec_output] {
 242         send_log "$exec_output\n"
 243         verbose "$exec_output"
 244         unresolved $test
 245         return
 246     }
 247
 248     set f1 [open tmpdir/sr1.sr r]
 249     set f2 [open tmpdir/sr2.sr r]
 250     if [srec_compare $f1 $f2] {
 251         pass $test
 252     } else {
 253         fail $test
 254     }
 255     close $f1
 256     close $f2
 257 }
 258
 259 set test1 "S-records"
 260 set test2 "S-records with constructors"
 261
 262 # See whether the default linker script uses SIZEOF_HEADERS.
 263 catch "exec $ld --verbose" exec_output
 264 set sizeof_headers [string match "*SIZEOF_HEADERS*" $exec_output]
 265
 266 # First test linking a C program.  We don't require any libraries.  We
 267 # link it normally, and objcopy to the S-record format, and then link
 268 # directly to the S-record format, and require that the two files
 269 # contain the same data.
 270
 271 if { [which $CC] == 0 } {
 272     untested $test1
 273     untested $test2
 274     return
 275 }
 276
 277 if { ![ld_compile $CC $srcdir/$subdir/sr1.c tmpdir/sr1.o] \
 278      || ![ld_compile $CC $srcdir/$subdir/sr2.c tmpdir/sr2.o] } {
 279     unresolved $test1
 280     unresolved $test2
 281     return
 282 }
 283
 284 # The i386-aout target is confused: the linker does not put the
 285 # sections where objdump finds them.  I don't know which is wrong.
 286 setup_xfail "i*86-*-aout*"
 287
 288 # These tests fail on the MIPS ELF target because the GP value in the
 289 # .reginfo section is not updated when the S-record version is written
 290 # out.
 291 setup_xfail "mips*-*-elf*" "mips*-*-irix5*" "mips*-*-irix6*"
 292
 293 # The S-record linker doesn't do the magic TOC handling that XCOFF
 294 # linkers do.
 295 setup_xfail "*-*-aix*" "*-*-xcoff*"
 296
 297 run_srec_test $test1 "tmpdir/sr1.o tmpdir/sr2.o"
 298
 299 # Now try linking a C++ program with global constructors and
 300 # destructors.  Note that since we are not linking against any
 301 # libraries, this program won't actually work or anything.
 302
 303 if { [which $CXX] == 0 } {
 304     untested $test2
 305     return
 306 }
 307
 308 if ![ld_compile "$CXX $CXXFLAGS -fgnu-linker" $srcdir/$subdir/sr3.cc tmpdir/sr3.o] {
 309     unresolved $test2
 310     return
 311 }
 312
 313 # See above.
 314 setup_xfail "i*86-*-aout*"
 315 setup_xfail "mips*-*-elf*" "mips*-*-irix5*" "mips*-*-irix6*"
 316 setup_xfail "*-*-aix*" "*-*-xcoff*"
 317
 318 run_srec_test $test2 "tmpdir/sr3.o"