# Test linking directly to S-records.
# By Ian Lance Taylor, Cygnus Support.
# Copyright 1999, 2000, 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"