[deliverable/binutils-gdb.git] / gdb / testsuite / gdb.trace / entry-values.exp

# Copyright 2013-2014 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/>.
load_lib dwarf.exp

# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
    return 0
}

standard_testfile .c entry-values-dw.S

if  {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
	  object {nodebug}] != ""} {
    return -1
}

# Start GDB and load object file, compute the function length and
# the offset of branch instruction in function.  They are needed
# in the Dwarf Assembler below.

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}1.o

set foo_length ""

# Calculate the offset of the last instruction from the beginning.
set test "disassemble foo"
gdb_test_multiple $test $test {
    -re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
	set foo_length $expect_out(1,string)
	pass $test
    }
    -re ".*$gdb_prompt $" {
	fail $test
	# Bail out here, because we can't do the following tests if
	# $foo_length is unknown.
	return -1
    }
}

# Calculate the size of the last instruction.  Single instruction
# shouldn't be longer than 10 bytes.

set test "disassemble foo+$foo_length,+10"
gdb_test_multiple $test $test {
    -re ".*($hex) <foo\\+$foo_length>:\[^\r\n\]+\r\n\[ \]+($hex).*\.\r\n$gdb_prompt $" {
	set start $expect_out(1,string)
	set end $expect_out(2,string)

	set foo_length [expr $foo_length + $end - $start]
	pass $test
    }
    -re ".*$gdb_prompt $" {
	fail $test
	# Bail out here, because we can't do the following tests if
	# $foo_length is unknown.
	return -1
    }
}

set bar_length ""
set bar_call_foo ""

if { [istarget "arm*-*-*"] || [istarget "aarch64*-*-*"] } {
    set call_insn "bl"
} elseif { [istarget "s390*-*-*"] } {
    set call_insn "brasl"
} else {
    set call_insn "call"
}

# Calculate the offset of the last instruction from the beginning.
set test "disassemble bar"
gdb_test_multiple $test $test {
    -re ".*$hex <\\+$decimal>:\[ \t\]+$call_insn\[^\r\n\]+\r\n\[ \]+$hex <\\+($decimal)>:" {
	set bar_call_foo $expect_out(1,string)
	exp_continue
    }
    -re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
	set bar_length $expect_out(1,string)
	pass $test
    }
    -re ".*$gdb_prompt $" {
	fail $test
    }
}

if { [string equal $bar_call_foo ""] || [string equal $bar_length ""] } {
    fail "Find the call or branch instruction offset in bar"
    # The following test makes no sense if the offset is unknown.  We need
    # to update the pattern above to match call or branch instruction for
    # the target architecture.
    return -1
}

# Calculate the size of the last instruction.

set test "disassemble bar+$bar_length,+10"
gdb_test_multiple $test $test {
    -re ".*($hex) <bar\\+$bar_length>:\[^\r\n\]+\r\n\[ \]+($hex).*\.\r\n$gdb_prompt $" {
	set start $expect_out(1,string)
	set end $expect_out(2,string)

	set bar_length [expr $bar_length + $end - $start]
	pass $test
    }
    -re ".*$gdb_prompt $" {
	fail $test
	# Bail out here, because we can't do the following tests if
	# $bar_length is unknown.
	return -1
    }
}

gdb_exit

# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    declare_labels int_label foo_label
    global foo_length bar_length bar_call_foo

    cu {} {
	compile_unit {{language @DW_LANG_C}} {
	    int_label: base_type {
		{name int}
		{encoding @DW_ATE_signed}
		{byte_size 4 DW_FORM_sdata}
	    }

	    foo_label: subprogram {
		{name foo}
		{decl_file 1}
		{low_pc foo addr}
		{high_pc "foo + $foo_length" addr}
	    } {
		formal_parameter {
		    {type :$int_label}
		    {name i}
		    {location {DW_OP_reg0} SPECIAL_expr}
		}
		formal_parameter {
		    {type :$int_label}
		    {name j}
		    {location {DW_OP_reg1} SPECIAL_expr}
		}
	    }

	    subprogram {
		{name bar}
		{decl_file 1}
		{low_pc bar addr}
		{high_pc "bar + $bar_length" addr}
		{GNU_all_call_sites 1}
	    } {
		formal_parameter {
		    {type :$int_label}
		    {name i}
		}

		GNU_call_site {
		    {low_pc "bar + $bar_call_foo" addr}
		    {abstract_origin :$foo_label}
		} {
		    # Faked entry values are reference to variables 'global1'
		    # and 'global2' and faked locations are register 0 and
		    # register 1.
		    GNU_call_site_parameter {
			{location {DW_OP_reg0} SPECIAL_expr}
			{GNU_call_site_value {
			    addr global1
			    deref_size 4
			} SPECIAL_expr}
		    }
		    GNU_call_site_parameter {
			{location {DW_OP_reg1} SPECIAL_expr}
			{GNU_call_site_value {
			    addr global2
			    deref_size 4
			} SPECIAL_expr}
		    }
		}
	    }
	}
    }
}

if  {[gdb_compile $asm_file ${binfile}2.o object {nodebug}] != ""} {
    return -1
}

if  {[gdb_compile [list ${binfile}1.o ${binfile}2.o] \
	  "${binfile}" executable {}] != ""} {
    return -1
}

clean_restart ${testfile}

if ![runto_main] {
    fail "Can't run to main"
    return -1
}

gdb_breakpoint "foo"

gdb_continue_to_breakpoint "foo"

gdb_test_no_output "set print entry-values both"

gdb_test_sequence "bt" "bt (1)" {
    "\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=2, j=[-]?[0-9]+, j@entry=3\\)"
    "\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
    "\[\r\n\]#2 .* main \\(\\)"
}

# Update global variables 'global1' and 'global2' and test that the
# entry values are updated too.

gdb_test_no_output "set var global1=10"
gdb_test_no_output "set var global2=11"

gdb_test_sequence "bt" "bt (2)" {
    "\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=10, j=[-]?[0-9]+, j@entry=11\\)"
    "\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
    "\[\r\n\]#2 .* main \\(\\)"
}

# Restart GDB and trace.

clean_restart $binfile

load_lib "trace-support.exp"

if ![runto_main] {
    fail "Can't run to main to check for trace support"
    return -1
}

if ![gdb_target_supports_trace] {
    unsupported "target does not support trace"
    return -1
}

gdb_test "trace foo" "Tracepoint $decimal at .*"

if [is_amd64_regs_target] {
    set spreg "\$rsp"
} elseif [is_x86_like_target] {
    set spreg "\$esp"
} else {
    set spreg "\$sp"
}

# Collect arguments i and j.  Collect 'global1' which is entry value
# of argument i.  Don't collect 'global2' to test the entry value of
# argument j.

gdb_trace_setactions "set action for tracepoint 1" "" \
    "collect i, j, global1, \(\*\(void \*\*\) \($spreg\)\) @ 64" "^$"

gdb_test_no_output "tstart"

gdb_breakpoint "end"
gdb_continue_to_breakpoint "end"

gdb_test_no_output "tstop"

gdb_test "tfind" "Found trace frame 0, .*" "tfind start"

# Since 'global2' is not collected, j@entry is expected to be 'unavailable'.
gdb_test "bt 1" "#0 .* foo \\(i=\[-\]?$decimal, i@entry=2, j=\[-\]?$decimal, j@entry=<unavailable>\\).*"

# Test that unavailable "j@entry" is not shown when command option
# --skip-unavailable is used.
gdb_test "interpreter-exec mi \"-stack-list-arguments --skip-unavailable --simple-values\"" \
    "\r\n\\^done,stack-args=\\\[frame={level=\"0\",args=\\\[{name=\"i\",type=\"int\",value=\".*\"},{name=\"i@entry\",type=\"int\",value=\"2\"},{name=\"j\",type=\"int\",value=\".*\"}\\\]},frame=.*\\\].*"

gdb_test "tfind" "Target failed to find requested trace frame\..*"
Commit	Line	Data
ecd75fc8	1	# Copyright 2013-2014 Free Software Foundation, Inc.
b39a8faf YQ	2
	3	# This program is free software; you can redistribute it and/or modify
	4	# it under the terms of the GNU General Public License as published by
	5	# the Free Software Foundation; either version 3 of the License, or
	6	# (at your option) any later version.
	7	#
	8	# This program is distributed in the hope that it will be useful,
	9	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	# GNU General Public License for more details.
	12	#
	13	# You should have received a copy of the GNU General Public License
	14	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	15	load_lib dwarf.exp
	16
	17	# This test can only be run on targets which support DWARF-2 and use gas.
	18	if {![dwarf2_support]} {
	19	return 0
	20	}
	21
	22	standard_testfile .c entry-values-dw.S
	23
	24	if {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
	25	object {nodebug}] != ""} {
	26	return -1
	27	}
	28
	29	# Start GDB and load object file, compute the function length and
	30	# the offset of branch instruction in function. They are needed
	31	# in the Dwarf Assembler below.
	32
	33	gdb_exit
	34	gdb_start
	35	gdb_reinitialize_dir $srcdir/$subdir
	36	gdb_load ${binfile}1.o
	37
	38	set foo_length ""
	39
	40	# Calculate the offset of the last instruction from the beginning.
	41	set test "disassemble foo"
	42	gdb_test_multiple $test $test {
	43	-re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
	44	set foo_length $expect_out(1,string)
	45	pass $test
	46	}
	47	-re ".*$gdb_prompt $" {
	48	fail $test
	49	# Bail out here, because we can't do the following tests if
	50	# $foo_length is unknown.
	51	return -1
	52	}
	53	}
	54
	55	# Calculate the size of the last instruction. Single instruction
	56	# shouldn't be longer than 10 bytes.
	57
	58	set test "disassemble foo+$foo_length,+10"
	59	gdb_test_multiple $test $test {
d674a709	60	-re ".($hex) <foo\\+$foo_length>:\[^\r\n\]+\r\n\[ \]+($hex).\.\r\n$gdb_prompt $" {
b39a8faf YQ	61	set start $expect_out(1,string)
	62	set end $expect_out(2,string)
	63
	64	set foo_length [expr $foo_length + $end - $start]
	65	pass $test
	66	}
	67	-re ".*$gdb_prompt $" {
	68	fail $test
	69	# Bail out here, because we can't do the following tests if
	70	# $foo_length is unknown.
	71	return -1
	72	}
	73	}
	74
	75	set bar_length ""
	76	set bar_call_foo ""
	77
3f983d47 YZ	78	if { [istarget "arm--"] \|\| [istarget "aarch64--"] } {
3f983d47 YZ	79	set call_insn "bl"
d674a709 AA	80	} elseif { [istarget "s390--*"] } {
d674a709 AA	81	set call_insn "brasl"
3f983d47 YZ	82	} else {
	83	set call_insn "call"
	84	}
	85
b39a8faf YQ	86	# Calculate the offset of the last instruction from the beginning.
	87	set test "disassemble bar"
	88	gdb_test_multiple $test $test {
3f983d47	89	-re ".*$hex <\\+$decimal>:\[ \t\]+$call_insn\[^\r\n\]+\r\n\[ \]+$hex <\\+($decimal)>:" {
b39a8faf YQ	90	set bar_call_foo $expect_out(1,string)
	91	exp_continue
	92	}
	93	-re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
	94	set bar_length $expect_out(1,string)
	95	pass $test
	96	}
	97	-re ".*$gdb_prompt $" {
	98	fail $test
	99	}
	100	}
	101
	102	if { [string equal $bar_call_foo ""] \|\| [string equal $bar_length ""] } {
	103	fail "Find the call or branch instruction offset in bar"
	104	# The following test makes no sense if the offset is unknown. We need
	105	# to update the pattern above to match call or branch instruction for
	106	# the target architecture.
	107	return -1
	108	}
	109
	110	# Calculate the size of the last instruction.
	111
	112	set test "disassemble bar+$bar_length,+10"
	113	gdb_test_multiple $test $test {
d674a709	114	-re ".($hex) <bar\\+$bar_length>:\[^\r\n\]+\r\n\[ \]+($hex).\.\r\n$gdb_prompt $" {
b39a8faf YQ	115	set start $expect_out(1,string)
	116	set end $expect_out(2,string)
	117
	118	set bar_length [expr $bar_length + $end - $start]
	119	pass $test
	120	}
	121	-re ".*$gdb_prompt $" {
	122	fail $test
	123	# Bail out here, because we can't do the following tests if
	124	# $bar_length is unknown.
	125	return -1
	126	}
	127	}
	128
	129	gdb_exit
	130
	131	# Make some DWARF for the test.
	132	set asm_file [standard_output_file $srcfile2]
	133	Dwarf::assemble $asm_file {
	134	declare_labels int_label foo_label
	135	global foo_length bar_length bar_call_foo
	136
	137	cu {} {
	138	compile_unit {{language @DW_LANG_C}} {
	139	int_label: base_type {
	140	{name int}
	141	{encoding @DW_ATE_signed}
	142	{byte_size 4 DW_FORM_sdata}
	143	}
	144
	145	foo_label: subprogram {
	146	{name foo}
	147	{decl_file 1}
	148	{low_pc foo addr}
	149	{high_pc "foo + $foo_length" addr}
	150	} {
	151	formal_parameter {
	152	{type :$int_label}
	153	{name i}
	154	{location {DW_OP_reg0} SPECIAL_expr}
	155	}
	156	formal_parameter {
	157	{type :$int_label}
	158	{name j}
	159	{location {DW_OP_reg1} SPECIAL_expr}
	160	}
	161	}
	162
	163	subprogram {
	164	{name bar}
	165	{decl_file 1}
	166	{low_pc bar addr}
	167	{high_pc "bar + $bar_length" addr}
	168	{GNU_all_call_sites 1}
	169	} {
	170	formal_parameter {
	171	{type :$int_label}
	172	{name i}
	173	}
	174
	175	GNU_call_site {
	176	{low_pc "bar + $bar_call_foo" addr}
	177	{abstract_origin :$foo_label}
	178	} {
179	# Faked entry values are reference to variables 'global1'
180	# and 'global2' and faked locations are register 0 and
181	# register 1.
182	GNU_call_site_parameter {
183	{location {DW_OP_reg0} SPECIAL_expr}
184	{GNU_call_site_value {
185	addr global1
186	deref_size 4
187	} SPECIAL_expr}
188	}
189	GNU_call_site_parameter {
190	{location {DW_OP_reg1} SPECIAL_expr}
191	{GNU_call_site_value {
192	addr global2
193	deref_size 4
194	} SPECIAL_expr}
195	}
196	}
197	}
198	}
199	}
200	}
201
202	if {[gdb_compile $asm_file ${binfile}2.o object {nodebug}] != ""} {
203	return -1
204	}
205
206	if {[gdb_compile [list ${binfile}1.o ${binfile}2.o] \
207	"${binfile}" executable {}] != ""} {
208	return -1
209	}
210
211	clean_restart ${testfile}
212
213	if ![runto_main] {
214	fail "Can't run to main"
215	return -1
216	}
217
218	gdb_breakpoint "foo"
219
220	gdb_continue_to_breakpoint "foo"
221
222	gdb_test_no_output "set print entry-values both"
223
224	gdb_test_sequence "bt" "bt (1)" {
225	"\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=2, j=[-]?[0-9]+, j@entry=3\\)"
226	"\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
227	"\[\r\n\]#2 .* main \\(\\)"
228	}
229
230	# Update global variables 'global1' and 'global2' and test that the
231	# entry values are updated too.
232
233	gdb_test_no_output "set var global1=10"
234	gdb_test_no_output "set var global2=11"
235
236	gdb_test_sequence "bt" "bt (2)" {
237	"\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=10, j=[-]?[0-9]+, j@entry=11\\)"
238	"\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
239	"\[\r\n\]#2 .* main \\(\\)"
240	}
b1224238 YQ	241
	242	# Restart GDB and trace.
	243
	244	clean_restart $binfile
	245
	246	load_lib "trace-support.exp"
	247
	248	if ![runto_main] {
	249	fail "Can't run to main to check for trace support"
	250	return -1
	251	}
	252
	253	if ![gdb_target_supports_trace] {
	254	unsupported "target does not support trace"
	255	return -1
	256	}
	257
	258	gdb_test "trace foo" "Tracepoint $decimal at .*"
	259
	260	if [is_amd64_regs_target] {
	261	set spreg "\$rsp"
	262	} elseif [is_x86_like_target] {
	263	set spreg "\$esp"
	264	} else {
	265	set spreg "\$sp"
	266	}
	267
	268	# Collect arguments i and j. Collect 'global1' which is entry value
	269	# of argument i. Don't collect 'global2' to test the entry value of
	270	# argument j.
	271
	272	gdb_trace_setactions "set action for tracepoint 1" "" \
	273	"collect i, j, global1, \(\\(void \\*\) \($spreg\)\) @ 64" "^$"
	274
	275	gdb_test_no_output "tstart"
	276
	277	gdb_breakpoint "end"
	278	gdb_continue_to_breakpoint "end"
	279
	280	gdb_test_no_output "tstop"
	281
	282	gdb_test "tfind" "Found trace frame 0, .*" "tfind start"
	283
	284	# Since 'global2' is not collected, j@entry is expected to be 'unavailable'.
	285	gdb_test "bt 1" "#0 .* foo \\(i=\[-\]?$decimal, i@entry=2, j=\[-\]?$decimal, j@entry=<unavailable>\\).*"
	286
6211c335 YQ	287	# Test that unavailable "j@entry" is not shown when command option
	288	# --skip-unavailable is used.
	289	gdb_test "interpreter-exec mi \"-stack-list-arguments --skip-unavailable --simple-values\"" \
	290	"\r\n\\^done,stack-args=\\\[frame={level=\"0\",args=\\\[{name=\"i\",type=\"int\",value=\".\"},{name=\"i@entry\",type=\"int\",value=\"2\"},{name=\"j\",type=\"int\",value=\".\"}\\\]},frame=.\\\]."
	291
b1224238	292	gdb_test "tfind" "Target failed to find requested trace frame\..*"