gdb/testsuite/gdb.arch/aarch64-sme-sanity.exp

# Copyright (C) 2023-2025 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/>.
#
# Sanity check for AArch64 Scalable Vector/Matrix Extensions functionality.

load_lib aarch64-scalable.exp

#
# Run a series of basic checks for SVE/SME states.
#
proc sanity_check { vl svl } {
    # Run the program until the point where we start initializing the different
    # register states.
    set state_breakpoint "stop here"
    gdb_breakpoint [gdb_get_line_number $state_breakpoint]

    for {set id 0} {$id < 5} {incr id} {
	set state [state_id_to_state_string $id]

	with_test_prefix "state=${state} vl=${vl} svl=${svl}" {
	    gdb_continue_to_breakpoint $state_breakpoint
	    check_state $state $vl $svl
	}
    }
}

require is_aarch64_target
require allow_aarch64_sve_tests
require allow_aarch64_sme_tests

# Remote targets can't communicate vector length (vl or svl) changes
# to GDB via the RSP.
require !gdb_protocol_is_remote

set compile_flags {"debug" "macros" "additional_flags=-march=armv8.5-a+sve"}
standard_testfile
if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile} ${compile_flags}]} {
    return -1
}

if {![runto_main]} {
    return -1
}

# Adjust the repeat count for the test.
gdb_test_no_output "set print repeats 1" "adjust repeat count"

# Fetch both the vector length and the streaming vector length the target
# system is using.  We do not force any vector lengths and do not change
# it mid-execution.
set vl [expr [get_valueof "" "\$vg" "0" "fetch value of vl"] * 8]
set svl [expr [get_valueof "" "\$svg" "0" "fetch value of svl"] * 8]

# Now we are at the point where we can start checking state and moving the
# testcase forward.
sanity_check $vl $svl