gdb/testsuite/gdb.arch/powerpc-trap.exp

# Copyright 2021-2024 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 3 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, see <http://www.gnu.org/licenses/>.
#
# This file is part of the gdb testsuite.

# Test if GDB stops at various trap instructions inserted into
# the code.

if { [istarget powerpc-*] } {
   standard_testfile powerpc-trap.s
   # Number of expected SIGTRAPs to get.  This needs to be kept in sync
   # with the source file powerpc-trap.s.
   set expected_traps 3
} elseif {[istarget powerpc64*] } {
   standard_testfile powerpc64-trap.s
   # Number of expected SIGTRAPs to get.  This needs to be kept in sync
   # with the source file powerpc64-trap.s.
   set expected_traps 5
} else {
    unsupported "Skipping powerpc-specific tests"
    return
}

if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
    return -1
}

if {![runto_main]} {
    untested "could not run to main"
    return -1
}

set keep_going 1
set count 0

while {$keep_going} {
    set keep_going 0

    # Continue to next program breakpoint instruction.
    gdb_test_multiple "continue" "trap instruction $count causes SIGTRAP" {
	-re "Program received signal SIGTRAP, Trace/breakpoint trap.*$gdb_prompt $" {
	    pass $gdb_test_name

	    # Advance PC to next instruction
	    gdb_test "set \$pc = \$pc + 4" "" "advance past trap instruction $count"

	    incr count
	    if {$count < $expected_traps} {
	    	set keep_going 1
	    }
	}
    }
}

# Verify we stopped at the expected number of SIGTRAP's.
gdb_assert {$count == $expected_traps} "all trap instructions triggered"

# One last continue to reach the end of the test, to make sure we don't get
# another SIGTRAP.
gdb_test "continue" "exited normally.*" "continue to end"