TheRock/debug-tools/rocgdb/source/gdb/testsuite/gdb.rocm/mi-lanes.exp

# Copyright 2022-2024 Free Software Foundation, Inc.
# Copyright (C) 2022-2024 Advanced Micro Devices, Inc. All rights reserved.

# 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 testcase exercises MI support for lane debugging features.
#
load_lib rocm.exp
load_lib mi-support.exp
set MIFLAGS "-i=mi"

require allow_hip_tests
# The debug behavior this test checks (inspecting device locals
# and/or single-stepping) is not reliable on optimized device
# code, so skip it for optimized builds.
require no_optimized_code

standard_testfile lane-execution.cpp

if {[build_executable "failed to prepare" $testfile $srcfile {debug hip}]} {
    return -1
}

# Usage:
#  my_lineno [TEXT]...
#
# For each TEXT, find line number of the first line containing TEXT.
# The found line number is stored in a global called TEXT_line.

proc my_lineno {args} {
    foreach text $args {
       global ${text}_line
       set ${text}_line [gdb_get_line_number $text]
    }
}

my_lineno \
    "if_1_cond" "if_1_then" "if_1_else" "if_1_end" \
    "if_2_cond" "if_2_then" "if_2_else" "if_2_end" \
    "if_3_cond" "if_3_then" "if_3_else" "if_3_end"

# The GPU thread's id.
set gpu_thr ""

# Test MI lanes support.

proc_with_prefix test_mi_lanes {} {
    global hex decimal mi_gdb_prompt
    global gpu_thr

    set any "\[^\n\]*"

    set lane_re_A "\\\{id=\"$decimal\",state=\"A\",target-id=\"$any\",frame=\\\{level=\"$decimal\",addr=\"$hex\",func=\"$any\",$any\\\}"
    set lane_re_I "\\\{id=\"$decimal\",state=\"I\",target-id=\"$any\"\\\}"
    set lane_re "($lane_re_A|$lane_re_I)"

    mi_clean_restart $::binfile

    with_test_prefix "no execution" {
	set no_thr_selected_err "\\^error,msg=\"No thread selected\\.\""
	mi_gdb_test "-lane-info" $no_thr_selected_err
	mi_gdb_test "-lane-info 0" $no_thr_selected_err
    }

    mi_runto "lane_pc_test" -pending

    with_test_prefix "breakpoint stop" {
	mi_create_breakpoint "$::if_1_else_line" "break-insert lineno" \
	    -number 2 -func "lane_pc_test\\(.*\\)" -file ".*lane-execution.cpp" \
	    -line $::if_1_else_line

	gdb_test_multiple \
	    "-data-evaluate-expression \$_thread" \
	    "get gpu thread" \
	    -prompt "$mi_gdb_prompt" {

	    -re "\\^done,value=\"($decimal)\"\r\n${mi_gdb_prompt}" {
		set gpu_thr $expect_out(1,string)
		pass $gdb_test_name
	    }
	}

	if {$gpu_thr == ""} {
	    untested "couldn't retrieve gpu thread"
	    return
	}

	mi_send_resuming_command "exec-continue" "continuing execution"

	mi_expect_breakpoint_stop "breakpoint stop, hit-lanes" \
	    -hit-lanes "0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30" \
	    -func "lane_pc_test" \
	    -file "lane-execution.cpp" \
	    -thread-id $gpu_thr \
	    -lane-id 0
    }

    # Check that end-stepping-range stops also include the "lane-id"
    # attribute.
    with_test_prefix "step" {

	# Switch to a lane other than 0 to check that GDB isn't always
	# printing "lane-id" as 0.
	mi_gdb_test "-thread-select -l 2 $gpu_thr" \
	    ".*\\^done,new-thread-id=\"$gpu_thr\",lane-id=\"2\",frame={.*}"

	mi_send_resuming_command "exec-next" "next"

	mi_expect_step_stop "step stop" \
	    -func "lane_pc_test" \
	    -file "lane-execution.cpp" \
	    -thread-id $gpu_thr \
	    -lane-id 2
    }

    with_test_prefix "lane-info" {
	mi_gdb_test "-lane-info -1" "\\^error,msg=\"negative value\""
	mi_gdb_test "-lane-info 0" "\\^done,lanes=\\\[$lane_re_A\\\]"
	mi_gdb_test "-lane-info 1" "\\^done,lanes=\\\[$lane_re_I\\\]"

	mi_gdb_test "-lane-info 0-1" "\\^done,lanes=\\\[$lane_re\\\]"

	mi_gdb_test "-lane-info 0-1 4" "\\^error,msg=\"Invalid MI command\""
	mi_gdb_test "-lane-info \"0-1 4\"" "\\^done,lanes=\\\[$lane_re,$lane_re,$lane_re\\\]"

	mi_gdb_test "-lane-info" "\\^done,lanes=\\\[($lane_re)+\\\]"
    }

    with_test_prefix "--lane" {
	mi_gdb_test "-data-evaluate-expression \$_lane" \
	    "\\^done,value=\"2\"" \
	    "-data-evaluate-expression without --lane"

	mi_gdb_test "-data-evaluate-expression --lane 1 \$_lane" \
	    "\\^done,value=\"1\"" \
	    "-data-evaluate-expression with --lane"

	mi_gdb_test "-data-evaluate-expression --thread $gpu_thr --lane 4 \$_lane" \
	    "\\^done,value=\"4\"" \
	    "-data-evaluate-expression with --thread --lane"
    }

    with_test_prefix "-thread-select -l" {
	mi_gdb_test "-thread-select -l 4" \
	    "\\^error,msg=\"-thread-select: USAGE: .*" \
	    "missing thread"

	mi_gdb_test "-thread-select -l 5 $gpu_thr" \
	    ".*\\^done,new-thread-id=\"$gpu_thr\",lane-id=\"5\",frame={.*}" \
	    "with thread"
    }

    with_test_prefix "=thread-selected" {
	mi_gdb_test "thread 1" \
	    ".*=thread-selected,id=\"1\",frame={.*}\r\n\\^done" \
	    "thread cpu"

	mi_gdb_test "thread $gpu_thr" \
	    ".*=thread-selected,id=\"$gpu_thr\",lane-id=\"5\",frame={.*}\r\n\\^done" \
	    "thread gpu"

	mi_gdb_test "lane 5" \
	    ".*=thread-selected,id=\"$gpu_thr\",lane-id=\"5\",frame={.*}\r\n\\^done" \
	    "lane cmd"
    }
}

# Test varobjs.

proc_with_prefix test_mi_varobjs {} {
    global hex mi_gdb_prompt
    global gpu_thr

    # Check that we're using a compiler that can emit debug info for
    # locals.
    gdb_test_multiple \
	"-data-evaluate-expression gid" \
	"probe for debug info" \
	-prompt "$mi_gdb_prompt" {

	-re "\\^done,value=\"5\"\r\n${mi_gdb_prompt}" {
	    pass $gdb_test_name
	}
	-re "\\^done,value=\"<optimized out>\"\r\n${mi_gdb_prompt}" {
	    pass "$gdb_test_name"
	    untested "MI varobjs, no debug info"
	    return
	}
    }

    mi_gdb_test "-var-create var * gid" \
	"\\^done,name=\"var\",numchild=\"0\",value=\"5\",type=\"unsigned int\",thread-id=\"$gpu_thr\",lane-id=\"5\",has_more=\"0\""

    mi_gdb_test "-var-evaluate-expression var" \
	"\\^done,value=\"5\"" "eval varobj"

    mi_gdb_test "-data-evaluate-expression --thread $gpu_thr --lane 5 gid=555" \
	"=memory-changed,thread-id=\"$gpu_thr\",lane-id=\"5\",addr=\"private_lane#$hex\",len=\"0x4\"\r\n\\^done,value=\"555\"" \
	"frob value"

    # Test updating the varobj while a lane other than 3 is
    # selected.
    with_test_prefix "another lane" {
	mi_gdb_test "-thread-select -l 0 $gpu_thr" \
	    ".*\\^done,new-thread-id=\"$gpu_thr\",lane-id=\"0\",frame={.*}" \
	    "-thread-select another lane"

	# The value of "gid" for the current lane should not be
	# "555".  This ensures that GDB correctly changes lane to
	# update the varobj.
	mi_gdb_test "-data-evaluate-expression gid" \
	    "\\^done,value=\"0\"" \
	    "value for current lane"

	mi_gdb_test "-var-update var" \
	    "\\^done,changelist=\\\[\\{name=\"var\",in_scope=\"true\",type_changed=\"false\",has_more=\"0\"\\}\\\]"

	mi_gdb_test "524-var-evaluate-expression var" \
	    "524\\^done,value=\"555\""

	# Check GDB did not lose the selected thread/lane.
	mi_gdb_test "-data-evaluate-expression \$_thread" \
	    "\\^done,value=\"$gpu_thr\""
	mi_gdb_test "-data-evaluate-expression \$_lane" \
	    "\\^done,value=\"0\""
    }

    # Test updating the varobj while a CPU thread is selected.
    with_test_prefix "cpu thread" {
	mi_gdb_test "-data-evaluate-expression --thread $gpu_thr --lane 5 gid=666" \
	    "=memory-changed,thread-id=\"$gpu_thr\",lane-id=\"5\",addr=\"private_lane#$hex\",len=\"0x4\"\r\n\\^done,value=\"666\"" \
	    "frob value"

	mi_gdb_test "-thread-select 1" \
	    ".*\\^done,new-thread-id=\"1\",frame={.*}" \
	    "-thread-select host thread"

	mi_gdb_test "-var-update var" \
	    "\\^done,changelist=\\\[\\{name=\"var\",in_scope=\"true\",type_changed=\"false\",has_more=\"0\"\\}\\\]"

	mi_gdb_test "-var-evaluate-expression var" \
	    "\\^done,value=\"666\""

	# Check that GDB did not lose the selected thread/lane.
	mi_gdb_test "-data-evaluate-expression \$_thread" \
	    "\\^done,value=\"1\""
	mi_gdb_test "-data-evaluate-expression \$_lane" \
	    "\\^done,value=\"0\""
    }

    mi_gdb_test "-data-evaluate-expression --thread $gpu_thr --lane 5 gid=5" \
	"=memory-changed,thread-id=\"$gpu_thr\",lane-id=\"5\",addr=\"private_lane#$hex\",len=\"0x4\"\r\n\\^done,value=\"5\"" \
	"restore value"
}

with_rocm_gpu_lock {
    test_mi_lanes
    test_mi_varobjs
}