381 lines
10 KiB
Text
381 lines
10 KiB
Text
# Test linking directly to S-records.
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# By Ian Lance Taylor, Cygnus Support.
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# Public domain.
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# Get the offset from an S-record line to the start of the data.
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proc srec_off { l } {
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if [string match "S1*" $l] {
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return 8
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} else { if [string match "S2*" $l] {
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return 10
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} else { if [string match "S3*" $l] {
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return 12
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} else {
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return -1
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} } }
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}
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# See if an S-record line contains only zero data.
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proc srec_zero { l } {
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if [string match "S\[0789\]*" $l] {
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return 1
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}
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# Strip the address and checksum.
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if [string match "S\[123\]*" $l] {
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set l [string range $l [srec_off $l] [expr [string length $l] - 3]]
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} else {
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return 0
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}
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# The rest must be zero.
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return [string match "" [string trim $l "0"]]
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}
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# Get the address of an S-record line.
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proc srec_addr { l } {
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if [string match "S\[123\]*" $l] {
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set addr [string range $l 4 [expr [srec_off $l] - 1]]
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} else {
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return -1
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}
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return "0x$addr"
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}
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# Get the number of data bytes in an S-record line.
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proc srec_len { l } {
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if ![string match "S\[123\]*" $l] {
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return 0
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}
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return [expr "0x[string range $l 2 3]" - ([srec_off $l] - 4) / 2 - 1]
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}
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# Extract bytes from an S-record line.
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proc srec_extract { l start len } {
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set off [srec_off $l]
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set rlen [srec_len $l]
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set stop [expr $start + $len]
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if { $stop > $rlen } {
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set stop [expr $rlen]
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}
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set start [expr $start * 2 + $off]
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set stop [expr $stop * 2 + $off - 1]
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return [string range $l $start $stop]
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}
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# See if a range of bytes in an S-record line is all zeroes.
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proc srec_zero_range { l start len } {
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return [string match "" [string trim [srec_extract $l $start $len] "0"]]
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}
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# Trim an S-record line such that the specified number of bytes remain
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# at the end.
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proc srec_trim { l leave } {
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set off [srec_off $l]
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set addr [srec_addr $l]
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set len [srec_len $l]
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if { $leave >= $len } {
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return $l
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}
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set s1 [string range $l 0 1]
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set s2 [format "%02x" [expr ($off - 4) / 2 + $leave + 1]]
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set s3 [format "%0[expr $off - 4]x" [expr $addr + $len - $leave]]
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set s4 [string range $l [expr [string length $l] - ($leave * 2) - 2] end]
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set s "${s1}${s2}${s3}${s4}"
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verbose "srec_trim { '$l' $leave } returning '$s'" 2
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return $s
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}
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# Report failure when comparing S-record lines
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proc srec_compare_fail { which l1 l2 } {
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send_log "comparison failure $which:\n$l1\n$l2\n"
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verbose "comparison failure $which:\n$l1\n$l2"
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}
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# Compare S-record files. We don't want to fuss about things like
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# extra zeroes. Note that BFD always sorts S-records by address.
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proc srec_compare { f1 f2 } {
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set e1 [gets $f1 l1]
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set e2 [gets $f2 l2]
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while { $e1 != -1 } {
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set l1 [string trimright $l1 "\r\n"]
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set l2 [string trimright $l2 "\r\n"]
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if { $e2 == -1 } {
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# If l1 contains data, it must be zero.
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if ![srec_zero $l1] {
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send_log "data after EOF: $l1\n"
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verbose "data after EOF: $l1"
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return 0
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}
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} else { if { [string compare $l1 $l2] == 0 } {
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set e1 [gets $f1 l1]
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set e2 [gets $f2 l2]
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} else { if { [srec_zero $l1] } {
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set e1 [gets $f1 l1]
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} else { if { [srec_zero $l2] } {
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set e2 [gets $f2 l2]
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} else {
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# The strings are not the same, and neither is all zeroes.
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set a1 [srec_addr $l1]
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set n1 [srec_len $l1]
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set a2 [srec_addr $l2]
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set n2 [srec_len $l2]
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if { $a1 < $a2 && ![srec_zero_range $l1 0 [expr $a2 - $a1]] } {
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verbose "$a1 $a2 [srec_extract $l1 0 [expr $a2 - $a1]]" 2
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srec_compare_fail 1 $l1 $l2
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return 0
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}
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if { $a2 < $a1 && ![srec_zero_range $l2 0 [expr $a1 - $a2]] } {
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srec_compare_fail 2 $l1 $l2
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return 0
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}
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# Here we know that any initial data in both lines is
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# zero. Now make sure that any overlapping data matches.
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if { $a1 < $a2 } {
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set os1 [expr $a2 - $a1]
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set os2 0
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} else {
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set os1 0
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set os2 [expr $a1 - $a2]
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}
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if { $a1 + $n1 < $a2 + $n2 } {
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set ol [expr $n1 - $os1]
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} else {
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set ol [expr $n2 - $os2]
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}
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set x1 [srec_extract $l1 $os1 $ol]
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set x2 [srec_extract $l2 $os2 $ol]
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if { [string compare $x1 $x2] != 0 } {
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verbose "$os1 $ol $x1" 2
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verbose "$os2 $ol $x2" 2
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srec_compare_fail 3 $l1 $l2
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return 0
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}
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# These strings match. Trim the data from the larger
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# string, read a new copy of the smaller string, and
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# continue.
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if { $a1 + $n1 < $a2 + $n2 } {
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set l2 [srec_trim $l2 [expr ($a2 + $n2) - ($a1 + $n1)]]
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set e1 [gets $f1 l1]
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} else { if { $a1 + $n1 > $a2 + $n2 } {
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set l1 [srec_trim $l1 [expr ($a1 + $n1) - ($a2 + $n2)]]
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set e2 [gets $f2 l2]
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} else {
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set e1 [gets $f1 l1]
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set e2 [gets $f2 l2]
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} }
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} } } }
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}
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# We've reached the end of the first file. The remainder of the
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# second file must contain only zeroes.
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while { $e2 != -1 } {
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set l2 [string trimright $l2 "\r\n"]
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if ![srec_zero $l2] {
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send_log "data after EOF: $l2\n"
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verbose "data after EOF: $l2"
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return 0
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}
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set e2 [gets $f2 l2]
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}
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return 1
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}
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# Link twice, objcopy, and compare
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proc run_srec_test { test objs } {
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global ld
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global objcopy
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global sizeof_headers
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global host_triplet
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set flags ""
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# If the linker script uses SIZEOF_HEADERS, use a -Ttext argument
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# to force both the normal link and the S-record link to be put in
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# the same place. We don't always use -Ttext because it interacts
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# poorly with a.out.
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if { $sizeof_headers } {
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set flags "$flags -Ttext 0x1000"
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}
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# The a29k compiled code calls V_SPILL and V_FILL. Since we don't
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# need to run this code, but we don't have definitions for those
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# functions, we just define them out.
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if [istarget a29k*-*-*] {
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set flags "$flags --defsym V_SPILL=0 --defsym V_FILL=0"
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}
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# ARM targets call __gccmain
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if [istarget arm*-*-*] {
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set flags "$flags --defsym ___gccmain=0"
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}
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if [istarget strongarm*-*-*] {
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set flags "$flags --defsym __gccmain=0"
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}
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# Thumb targets call __gccmain
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if [istarget thumb-*-*] {
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set flags "$flags --defsym ___gccmain=0"
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}
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# PowerPC EABI code calls __eabi.
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if [istarget powerpc*-*-eabi*] {
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set flags "$flags --defsym __eabi=0"
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}
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# mn10200 code calls __truncsipsi2_d0_d2.
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if {[istarget mn10200*-*-*]} then {
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set flags "$flags --defsym __truncsipsi2_d0_d2=0"
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}
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# V850 targets need libgcc.a
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if [istarget v850*-*-elf] {
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set objs "$objs -L ../gcc -lgcc"
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}
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if { ![ld_simple_link $ld tmpdir/sr1 "$flags $objs"] \
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|| ![ld_simple_link $ld tmpdir/sr2.sr "$flags -oformat srec $objs"] } {
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setup_xfail "hppa*-*-*elf*"
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fail $test
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return
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}
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send_log "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr\n"
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verbose "$objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr"
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catch "exec $objcopy -O srec tmpdir/sr1 tmpdir/sr1.sr" exec_output
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set exec_output [prune_warnings $exec_output]
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if ![string match "" $exec_output] {
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send_log "$exec_output\n"
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verbose "$exec_output"
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unresolved $test
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return
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}
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set f1 [open tmpdir/sr1.sr r]
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set f2 [open tmpdir/sr2.sr r]
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if [srec_compare $f1 $f2] {
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pass $test
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} else {
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fail $test
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}
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close $f1
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close $f2
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}
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set test1 "S-records"
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set test2 "S-records with constructors"
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# See whether the default linker script uses SIZEOF_HEADERS.
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catch "exec $ld --verbose" exec_output
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set sizeof_headers [string match "*SIZEOF_HEADERS*" $exec_output]
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# First test linking a C program. We don't require any libraries. We
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# link it normally, and objcopy to the S-record format, and then link
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# directly to the S-record format, and require that the two files
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# contain the same data.
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if { [which $CC] == 0 } {
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untested $test1
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untested $test2
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return
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}
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if { ![ld_compile $CC $srcdir/$subdir/sr1.c tmpdir/sr1.o] \
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|| ![ld_compile $CC $srcdir/$subdir/sr2.c tmpdir/sr2.o] } {
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unresolved $test1
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unresolved $test2
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return
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}
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# The i386-aout target is confused: the linker does not put the
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# sections where objdump finds them. I don't know which is wrong.
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setup_xfail "i*86-*-aout*"
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# These tests fail on the native MIPS ELF targets because the GP value
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# in the .reginfo section is not updated when the S-record version is
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# written out. The mips-elf target itself does not use a .reginfo section.
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setup_xfail "mips*-*-irix5*" "mips*-*-irix6*"
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# The S-record linker doesn't do the magic TOC handling that XCOFF
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# linkers do.
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setup_xfail "*-*-aix*" "*-*-xcoff*"
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# The S-record linker doesn't build ARM/Thumb stubs.
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setup_xfail "arm-*-coff"
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setup_xfail "strongarm*-*-*"
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setup_xfail "arm-*-pe*"
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# setup_xfail "arm-*elf*"
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setup_xfail "thumb-*-coff*"
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setup_xfail "thumb-*-pe*"
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setup_xfail "thumb-*-elf*"
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setup_xfail "arm*-*-linux*"
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# The S-record linker doesn't build special EABI sections.
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setup_xfail "powerpc*-*-eabi*"
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# The S-record linker doesn't include the .{zda} sections.
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setup_xfail "v850*-*-elf"
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# The S-record linker doesn't handle Alpha Elf relaxation.
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setup_xfail "alpha*-*-elf*" "alpha*-*-linux-gnu*" "alpha*-*-gnu*"
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setup_xfail "alpha*-*-netbsd*"
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# The S-record linker doesn't support the special PE headers - the PE
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# emulation tries to write pe-specific information to the PE headers
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# in the output bfd, but it's not a PE bfd (it's an srec bfd)
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setup_xfail "*-*-cygwin*" "*-*-mingw*" "*-*-pe*" "*-*-winnt*"
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run_srec_test $test1 "tmpdir/sr1.o tmpdir/sr2.o"
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# Now try linking a C++ program with global constructors and
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# destructors. Note that since we are not linking against any
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# libraries, this program won't actually work or anything.
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if { [which $CXX] == 0 } {
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untested $test2
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return
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}
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if ![ld_compile "$CXX $CXXFLAGS -fgnu-linker" $srcdir/$subdir/sr3.cc tmpdir/sr3.o] {
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unresolved $test2
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return
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}
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# See above.
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setup_xfail "i*86-*-aout*"
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setup_xfail "mips*-*-irix5*" "mips*-*-irix6*"
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setup_xfail "*-*-aix*" "*-*-xcoff*"
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setup_xfail "arm*-*-*"
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setup_xfail "strongarm*-*-*"
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setup_xfail "thumb-*-*"
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setup_xfail "powerpc*-*-eabi*"
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setup_xfail "v850*-*-elf"
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setup_xfail "alpha*-*-elf*" "alpha*-*-linux-gnu*" "alpha*-*-gnu*"
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setup_xfail "alpha*-*-netbsd*"
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setup_xfail "*-*-cygwin*" "*-*-mingw*" "*-*-pe*" "*-*-winnt*"
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run_srec_test $test2 "tmpdir/sr3.o"
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