264 lines
7.7 KiB
Plaintext
264 lines
7.7 KiB
Plaintext
# Expect script for ld-empic tests
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# Copyright 1994, 1995, 1996 Free Software Foundation, Inc.
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#
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# This file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# Written by Ian Lance Taylor (ian@cygnus.com)
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#
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# Test the handling of MIPS embedded PIC code. This test essentially
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# tests the compiler and assembler as well as the linker, since MIPS
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# embedded PIC is a GNU enhancement to standard MIPS tools.
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# Embedded PIC is only supported for MIPS ECOFF targets.
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if ![istarget mips*-*-ecoff*] {
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return
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}
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set testname relax
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if { [which $CC] == 0 } {
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untested $testname
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return
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}
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# Test that relaxation works correctly. This testsuite was composed
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# (by experimentation) to force the linker to relax twice--that is,
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# the first relaxation pass will force another call to be out of
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# range, requiring a second relaxation pass.
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if { ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax1.c tmpdir/relax1.o]
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|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax2.c tmpdir/relax2.o]
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|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax3.c tmpdir/relax3.o]
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|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax4.c tmpdir/relax4.o] } {
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unresolved $testname
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return
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}
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if ![ld_simple_link $ld tmpdir/relax "--relax -T $srcdir/$subdir/relax.t tmpdir/relax1.o tmpdir/relax2.o tmpdir/relax3.o tmpdir/relax4.o"] {
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fail $testname
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} else {
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# Check that the relaxation produced the correct result. Check
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# each bal instruction. Some will go directly to the start of a
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# function, which is OK. Some will form part of the five
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# instruction expanded call sequence, in which case we compute the
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# real destination and make sure it is the start of a function.
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# Some bal instructions are used to locate the start of the
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# function in order to do position independent addressing into the
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# text section, in which case we just check that it correctly
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# computes the start of the function.
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# Get the symbol table.
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if ![ld_nm $nm "" tmpdir/relax] {
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unresolved $testname
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return
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}
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# Get a disassembly.
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send_log "$objdump -d tmpdir/relax >tmpdir/relax.dis\n"
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verbose "$objdump -d tmpdir/relax >tmpdir/relax.dis"
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catch "exec $objdump -d tmpdir/relax >tmpdir/relax.dis" 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 $testname
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return
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}
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set balcnt 0
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set file [open tmpdir/relax.dis r]
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while { [gets $file line] != -1 } {
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verbose "$line" 2
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if ![string match "*bal*" $line] {
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continue
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}
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verbose "$line"
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incr balcnt
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if ![regexp "^(\[0-9a-fA-F\]+) (<\[a-z+0-9A-Z.\]+>)? bal (\[0-9a-fA-F\]+)" $line whole addr label dest] {
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perror "unrecognized format for $line"
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unresolved $testname
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return
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}
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if "0x$addr + 8 != 0x$dest" {
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# This is a straight function call. All function calls in
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# this example are to either foo or bar.
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if "0x$dest != $nm_output(foo) && 0x$dest != $nm_output(bar)" {
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send_log "fail 1\n"
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send_log "$line\n"
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fail $testname
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return
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}
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} else {
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# Pick up the next line. If it is sll, this is a switch
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# prologue, and there is not much we can do to test it.
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# Otherwise, it should be lui, and the next instruction
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# should be an addiu, followed by an addu to $31.
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if { [gets $file l] == -1 } {
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send_log "fail 2\n"
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send_log "$line\n"
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fail $testname
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return
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}
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verbose $l
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if [string match "*sll*" $l] {
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continue
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}
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if ![regexp "lui (\[\$a-z0-9\]+),(\[0-9a-fA-Fx\]+)" $l whole reg upper] {
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send_log "fail 3\n"
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send_log "$line\n"
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send_log "$l\n"
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fail $testname
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return
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}
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if { [gets $file l] == -1 } {
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send_log "fail 4\n"
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send_log "$line\n"
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fail $testname
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return
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}
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verbose "$l"
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if ![regexp "addiu \\$reg,\\$reg,(\[-0-9\]+)" $l whole lower] {
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send_log "fail 5\n"
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send_log "$line\n"
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send_log "$l\n"
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send_log "addiu \\$reg,\\$reg,(\[-0-9\]+)\n"
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fail $testname
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return
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}
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if { [gets $file l] == -1 } {
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send_log "fail 6\n"
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send_log "$line\n"
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fail $testname
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return
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}
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verbose "$l"
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if ![regexp "addu \\$reg,\\$reg,\\\$ra" $l] {
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send_log "fail 7\n"
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send_log "$line\n"
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send_log "$l\n"
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fail $testname
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return
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}
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# The next line will be jalr in the case of an expanded
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# call. Otherwise, the code is getting the start of the
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# function, and the next line can be anything.
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if { [gets $file l] == -1 } {
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send_log "fail 8\n"
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send_log "$line\n"
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fail $testname
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return
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}
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verbose "$l"
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if [string match "*jalr*" $l] {
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set dest [expr 0x$addr + 8 + ($upper << 16) + $lower]
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if { $dest != $nm_output(foo) && $dest != $nm_output(bar) } {
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send_log "fail 9\n"
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send_log "$line\n"
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fail $testname
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return
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}
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} else {
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set dest [expr ($upper << 16) + $lower]
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if ![regexp "<(\[.a-z\]+)\\+(\[0-9a-fA-F\]+)>" $label whole base offset] {
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send_log "fail 10\n"
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send_log "$line\n"
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fail $testname
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return
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}
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set offset 0x$offset
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if { $base == ".foo" } {
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set offset [expr $offset - ($nm_output(foo) - 0x30)]
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}
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if { $offset + 8 != - $dest } {
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send_log "fail 11\n"
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send_log "$line\n"
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fail $testname
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return
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}
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}
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}
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}
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close $file
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if {$balcnt < 10} {
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send_log "fail 12\n"
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fail $testname
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} else {
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verbose "$balcnt bal instructions"
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pass $testname
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}
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}
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# We now test actually running embedded MIPS PIC code. This can only
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# be done on a MIPS host with the same endianness as our target.
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if [istarget mipsel-*-*] {
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if ![ishost mips*-*-ultrix*] {
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return
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}
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} else {
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if ![ishost mips*-*-irix*] {
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return
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}
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}
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set testname "run embedded PIC code"
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# Compile the program which will run the test. This code must be
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# compiled for the host, not the target.
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send_log "$CC_FOR_HOST $CFLAGS_FOR_HOST -o tmpdir/run $srcdir/$subdir/run.c\n"
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verbose "$CC_FOR_HOST $CFLAGS_FOR_HOST -o tmpdir/run $srcdir/$subdir/run.c"
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catch "exec $CC_FOR_HOST $CFLAGS_FOR_HOST -o tmpdir/run $srcdir/$subdir/run.c" 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 $testname
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return
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}
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# Compile and link the test.
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if { ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/runtesti.s tmpdir/runtesti.o]
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|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/runtest1.c tmpdir/runtest1.o]
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|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/runtest2.c tmpdir/runtest2.o] } {
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unresolved $testname
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return
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}
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if ![ld_simple_link $ld tmpdir/runtest "--embedded-relocs tmpdir/runtesti.o tmpdir/runtest1.o tmpdir/runtest2.o"] {
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fail $testname
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} else {
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# Now run the test.
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send_log "tmpdir/run tmpdir/runtest\n"
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verbose "tmpdir/run tmpdir/runtest"
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catch "exec tmpdir/run tmpdir/runtest" exec_output
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if [string match "*ran and returned 0*" $exec_output] {
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send_log "$exec_output\n"
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verbose "$exec_output"
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pass $testname
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} else {
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send_log "$exec_output\n"
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verbose "$exec_output"
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fail $testname
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}
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}
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