--- /dev/null
+# Test linking directly to S-records.
+# By Ian Lance Taylor, Cygnus Support.
+# Public domain.
+
+# 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
+
+ # 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 targ "-Ttext 0x1000"
+ } else {
+ set targ ""
+ }
+
+ if { ![ld_simple_link $ld tmpdir/sr1 "$targ $objs"] \
+ || ![ld_simple_link $ld tmpdir/sr2.sr "$targ -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_system_crud $host_triplet $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[345]86-*-aout*"
+
+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 -fgnu-linker" $srcdir/$subdir/sr3.cc tmpdir/sr3.o] {
+ unresolved $test2
+ return
+}
+
+# See above.
+setup_xfail "i[345]86-*-aout*"
+
+run_srec_test $test2 "tmpdir/sr3.o"
projects / deliverable / binutils-gdb.git / commitdiff
