old-cross-binutils/gdb/testsuite/gdb.arch/pa-nullify.exp
Randolph Chung fe46cd3ab5 2004-12-03 Randolph Chung <tausq@debian.org>
* gdbarch.sh (instruction_nullified): Delete.
	* gdbarch.c: Regenerate.
	* gdbarch.h: Regenerate.
	* hppa-tdep.c (hppa_target_read_pc): Adjust pc if instruction is
	nullified.
	(hppa_unwind_pc): Likewise.
	(hppa_instruction_nullified): Delete.
	(hppa_gdbarch_init): Don't set instruction_nullified method.
	* infrun.c (infwait_states): Remove infwait_nullified_state.
	(handle_inferior_event): Remove handling of infwait_nullified_state.
	Remove handling of nullified instructions.


testsuite/

	* gdb.arch/pa-nullify.exp: New file.
	* gdb.arch/pa-nullify.s: New file.
2004-12-03 23:59:53 +00:00

152 lines
4.4 KiB
Text

# Copyright 2004 Free Software Foundation, Inc.
#
# This program 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.
#
# This file is part of the gdb testsuite.
if $tracelevel {
strace $tracelevel
}
set prms_id 0
set bug_id 0
# Test handling of nullified instructions for the pa target.
if ![istarget "hppa*-*-*"] then {
verbose "Skipping hppa nullification tests."
return
}
set testfile "pa-nullify"
set srcfile ${testfile}.s
set binfile ${objdir}/${subdir}/${testfile}
set gcorefile ${objdir}/${subdir}/${testfile}.gcore
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
unsupported "Testcase compile failed."
return -1
}
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
# In the first test, we do a "step" on a function whose last instruction
# contains a branch-with-nullify. The instruction in the delay slot belongs
# to the next function. We verify that when we step off the first function
# that we end up back at the caller and not at the second instruction.
gdb_breakpoint foo
gdb_test "run" "Breakpoint 1, .* in foo.*" "Breakpoint at foo"
set test "stepi till main"
gdb_test_multiple "stepi" "${test}" {
-re ".*in foo.*$gdb_prompt $" {
send_gdb "stepi\n"
exp_continue -continue_timer
}
-re ".*in bar.*$gdb_prompt $" {
fail $test
}
-re ".*in main.*$gdb_prompt $" {
pass $test
}
}
# In the second test, we verify that we can get a proper backtrace
# even when we are in a nullified instruction that belongs to the next function.
# We also verify that when stepping over a branch-with-nullify insn that we
# stay on the same insn for two steps.
proc get_addr_of_sym { sym } {
set addr 0
global gdb_prompt
global hex
set test "get address of $sym"
send_gdb "print $sym\n"
gdb_test_multiple "print $sym" $test {
-re ".*($hex) <$sym>.*$gdb_prompt $" {
set addr $expect_out(1,string)
pass $test
}
}
return $addr
}
if { ! [ runto_main ] } then { gdb_suppress_tests; }
set foo [get_addr_of_sym "foo"]
set bar [get_addr_of_sym "bar"]
set foo_last [expr $bar - 4]
gdb_breakpoint "*$foo_last"
gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*"
gdb_test "backtrace" "in foo.*in main.*" "Backtrace from last insn in foo"
gdb_test "stepi" "in foo.*" "stepi to nullified instruction stays in foo"
gdb_test "backtrace" "in foo.*in main.*" "Backtrace from nullified insn"
gdb_test "stepi" "in main.*" "stepi to main"
# In the third test, we verify that backtraces from nullified instructions
# work even in coredumps
proc gen_core { test } {
global gcorefile
global gdb_prompt
set gcore_works 0
set escapedfilename [string_to_regexp $gcorefile]
gdb_test_multiple "gcore $gcorefile" "$test: gcore" {
-re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
pass "$test: gcore"
set gcore_works 1
}
-re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
fail "$test: gcore"
}
}
return $gcore_works
}
proc test_core_bt { test } {
global gcorefile
gdb_test "core $gcorefile" "Core was generated by.*" \
"$test: load core file" "A program is being debugged already.*" "y"
gdb_test "backtrace" ".*in foo.*in main.*" "$test: backtrace in gcore"
}
set test "core at last insn in foo"
if { ! [ runto_main ] } then { gdb_suppress_tests; }
gdb_breakpoint "*$foo_last"
gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" "$test: continue to breakpoint"
if [gen_core $test] {
test_core_bt $test
}
set test "core at nullified insn"
if { ! [ runto_main ] } then { gdb_suppress_tests; }
gdb_breakpoint "*$foo_last"
gdb_test "continue" "Breakpoint \[0-9\]*,.* in foo.*" "$test: continue to breakpoint"
gdb_test "stepi" ".*in foo.*" "$test: step to nullified instruction"
if [gen_core $test] {
test_core_bt $test
}