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# Expect script for ld-empic tests
# Copyright 1994, 1995, 1996 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.
#
# Written by Ian Lance Taylor (ian@cygnus.com)
#
# Test the handling of MIPS embedded PIC code. This test essentially
# tests the compiler and assembler as well as the linker, since MIPS
# embedded PIC is a GNU enhancement to standard MIPS tools.
# Embedded PIC is only supported for MIPS ECOFF targets.
if ![istarget mips*-*-ecoff*] {
return
}
set testname relax
if { [which $CC] == 0 } {
untested $testname
return
}
# Test that relaxation works correctly. This testsuite was composed
# (by experimentation) to force the linker to relax twice--that is,
# the first relaxation pass will force another call to be out of
# range, requiring a second relaxation pass.
if { ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax1.c tmpdir/relax1.o]
|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax2.c tmpdir/relax2.o]
|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax3.c tmpdir/relax3.o]
|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/relax4.c tmpdir/relax4.o] } {
unresolved $testname
return
}
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"] {
fail $testname
} else {
# Check that the relaxation produced the correct result. Check
# each bal instruction. Some will go directly to the start of a
# function, which is OK. Some will form part of the five
# instruction expanded call sequence, in which case we compute the
# real destination and make sure it is the start of a function.
# Some bal instructions are used to locate the start of the
# function in order to do position independent addressing into the
# text section, in which case we just check that it correctly
# computes the start of the function.
# Get the symbol table.
if ![ld_nm $nm "" tmpdir/relax] {
unresolved $testname
return
}
# Get a disassembly.
send_log "$objdump -d tmpdir/relax >tmpdir/relax.dis\n"
verbose "$objdump -d tmpdir/relax >tmpdir/relax.dis"
catch "exec $objdump -d tmpdir/relax >tmpdir/relax.dis" exec_output
if ![string match "" $exec_output] {
send_log "$exec_output\n"
verbose $exec_output
unresolved $testname
return
}
set balcnt 0
set file [open tmpdir/relax.dis r]
while { [gets $file line] != -1 } {
verbose "$line" 2
if ![string match "*bal*" $line] {
continue
}
verbose "$line"
incr balcnt
if ![regexp "^(\[0-9a-fA-F\]+) (<\[a-z+0-9A-Z.\]+>)? bal (\[0-9a-fA-F\]+)" $line whole addr label dest] {
perror "unrecognized format for $line"
unresolved $testname
return
}
if "0x$addr + 8 != 0x$dest" {
# This is a straight function call. All function calls in
# this example are to either foo or bar.
if "0x$dest != $nm_output(foo) && 0x$dest != $nm_output(bar)" {
send_log "fail 1\n"
send_log "$line\n"
fail $testname
return
}
} else {
# Pick up the next line. If it is sll, this is a switch
# prologue, and there is not much we can do to test it.
# Otherwise, it should be lui, and the next instruction
# should be an addiu, followed by an addu to $31.
if { [gets $file l] == -1 } {
send_log "fail 2\n"
send_log "$line\n"
fail $testname
return
}
verbose $l
if [string match "*sll*" $l] {
continue
}
if ![regexp "lui (\[\$a-z0-9\]+),(\[0-9a-fA-Fx\]+)" $l whole reg upper] {
send_log "fail 3\n"
send_log "$line\n"
send_log "$l\n"
fail $testname
return
}
if { [gets $file l] == -1 } {
send_log "fail 4\n"
send_log "$line\n"
fail $testname
return
}
verbose "$l"
if ![regexp "addiu \\$reg,\\$reg,(\[-0-9\]+)" $l whole lower] {
send_log "fail 5\n"
send_log "$line\n"
send_log "$l\n"
send_log "addiu \\$reg,\\$reg,(\[-0-9\]+)\n"
fail $testname
return
}
if { [gets $file l] == -1 } {
send_log "fail 6\n"
send_log "$line\n"
fail $testname
return
}
verbose "$l"
if ![regexp "addu \\$reg,\\$reg,\\\$ra" $l] {
send_log "fail 7\n"
send_log "$line\n"
send_log "$l\n"
fail $testname
return
}
# The next line will be jalr in the case of an expanded
# call. Otherwise, the code is getting the start of the
# function, and the next line can be anything.
if { [gets $file l] == -1 } {
send_log "fail 8\n"
send_log "$line\n"
fail $testname
return
}
verbose "$l"
if [string match "*jalr*" $l] {
set dest [expr 0x$addr + 8 + ($upper << 16) + $lower]
if { $dest != $nm_output(foo) && $dest != $nm_output(bar) } {
send_log "fail 9\n"
send_log "$line\n"
fail $testname
return
}
} else {
set dest [expr ($upper << 16) + $lower]
if ![regexp "<(\[.a-z\]+)\\+(\[0-9a-fA-F\]+)>" $label whole base offset] {
send_log "fail 10\n"
send_log "$line\n"
fail $testname
return
}
set offset 0x$offset
if { $base == ".foo" } {
set offset [expr $offset - ($nm_output(foo) - 0x30)]
}
if { $offset + 8 != - $dest } {
send_log "fail 11\n"
send_log "$line\n"
fail $testname
return
}
}
}
}
close $file
if {$balcnt < 10} {
send_log "fail 12\n"
fail $testname
} else {
verbose "$balcnt bal instructions"
pass $testname
}
}
# We now test actually running embedded MIPS PIC code. This can only
# be done on a MIPS host with the same endianness as our target.
if [istarget mipsel-*-*] {
if ![ishost mips*-*-ultrix*] {
return
}
} else {
if ![ishost mips*-*-irix*] {
return
}
}
set testname "run embedded PIC code"
# Compile the program which will run the test. This code must be
# compiled for the host, not the target.
send_log "$CC_FOR_HOST $CFLAGS_FOR_HOST -o tmpdir/run $srcdir/$subdir/run.c\n"
verbose "$CC_FOR_HOST $CFLAGS_FOR_HOST -o tmpdir/run $srcdir/$subdir/run.c"
catch "exec $CC_FOR_HOST $CFLAGS_FOR_HOST -o tmpdir/run $srcdir/$subdir/run.c" exec_output
if ![string match "" $exec_output] {
send_log "$exec_output\n"
verbose "$exec_output"
unresolved $testname
return
}
# Compile and link the test.
if { ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/runtesti.s tmpdir/runtesti.o]
|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/runtest1.c tmpdir/runtest1.o]
|| ![ld_compile "$CC $CFLAGS -membedded-pic" $srcdir/$subdir/runtest2.c tmpdir/runtest2.o] } {
unresolved $testname
return
}
if ![ld_simple_link $ld tmpdir/runtest "--embedded-relocs tmpdir/runtesti.o tmpdir/runtest1.o tmpdir/runtest2.o"] {
fail $testname
} else {
# Now run the test.
send_log "tmpdir/run tmpdir/runtest\n"
verbose "tmpdir/run tmpdir/runtest"
catch "exec tmpdir/run tmpdir/runtest" exec_output
if [string match "*ran and returned 0*" $exec_output] {
send_log "$exec_output\n"
verbose "$exec_output"
pass $testname
} else {
send_log "$exec_output\n"
verbose "$exec_output"
fail $testname
}
}
|
