1# Copyright 2008-2020 Free Software Foundation, Inc. 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 16load_lib mi-support.exp 17set MIFLAGS "-i=mi" 18 19standard_testfile .c inline-markers.c 20 21if {[prepare_for_testing "failed to prepare" $testfile \ 22 [list $srcfile $srcfile2] {debug additional_flags=-Winline}]} { 23 return -1 24} 25 26gdb_test_no_output "set listsize 1" 27 28runto_main 29 30get_compiler_info 31get_debug_format 32if { [skip_inline_frame_tests] } { 33 untested "skipping inline frame tests" 34 return 35} 36 37# First, check that the things we expected to be inlined really were, 38# and those that shouldn't be weren't. 39set line1 [gdb_get_line_number "set breakpoint 1 here" ${srcfile2}] 40gdb_breakpoint $srcfile2:$line1 41set line2 [gdb_get_line_number "set breakpoint 2 here" ${srcfile2}] 42gdb_breakpoint $srcfile2:$line2 43 44gdb_test "continue" ".*set breakpoint 1 here.*" "continue to bar (1)" 45gdb_test "backtrace" "#0 bar.*#1 .*func1.*#2 .*main.*" \ 46 "backtrace from bar (1)" 47gdb_test "up" "#1 .*func1.*" "up from bar (1)" 48gdb_test "info frame" ".*inlined into frame.*" "func1 inlined (1)" 49 50gdb_test "continue" ".*set breakpoint 1 here.*" "continue to bar (2)" 51gdb_test "backtrace" "#0 bar.*#1 .*func1.*#2 .*func2.*#3 .*main.*" \ 52 "backtrace from bar (2)" 53gdb_test "up" "#1 .*func1.*" "up from bar (2)" 54gdb_test "info frame" ".*inlined into frame.*" "func1 inlined (2)" 55gdb_test "up" "#2 .*func2.*" "up from func1 (2)" 56gdb_test "info frame" ".*inlined into frame.*" "func2 inlined (2)" 57 58gdb_test "continue" ".*set breakpoint 2 here.*" "continue to marker" 59gdb_test "backtrace" "#0 marker.*#1 .*main.*" "backtrace from marker" 60gdb_test "info frame" ".*called by frame.*" "marker not inlined" 61 62# Next, check that we can next over inlined functions. We should not end up 63# inside any of them. 64delete_breakpoints 65runto_main 66 67# The lines before the first inlined call. 68set first "x = 7|y = 8" 69 70# Some extra lines that end up in our stepping due to code motion. 71set opt "start of main|result = 0" 72 73# We start this test with a "list" instead of a "next", in case the 74# first non-prologue instruction in main comes from the inlined function. 75set msg "next over inlined functions" 76gdb_test_multiple "list" $msg { 77 -re "($first|result = func1|result = func2|$opt).*$gdb_prompt $" { 78 send_gdb "next\r" 79 exp_continue 80 } 81 -re "marker \\\(\\\);\r\n$gdb_prompt $" { 82 pass $msg 83 } 84} 85 86# Check that when next shows the call of func1, it has not happened yet. 87runto_main 88 89# Like the return value of gdb_test: -1 something is wrong, 0 passed, 1 failed. 90set bt_test -1 91set x_test -1 92set func1_step -1 93 94set last_was_func1_call 0 95set msg "next past inlined func1" 96gdb_test_multiple "list" $msg { 97 -re "($first|$opt).*$gdb_prompt $" { 98 set last_was_func1_call 0 99 send_gdb "next\r" 100 exp_continue 101 } 102 -re "result = func1 \\\(\\\);\r\n$gdb_prompt $" { 103 # Check whether x has been set. If 0, we may be doing something 104 # else associated with this line besides the inlined call - e.g. 105 # loading the address of result. If 7, we may be at the call site. 106 # If 15, though, we might be past the call and back at the store to 107 # result - that's OK, as long as we weren't just here (see 108 # func1_step above). 109 set x_val -1 110 gdb_test_multiple "print x" "" { 111 -re "\\\$$decimal = (\[0-9\]*)\r\n$gdb_prompt $" { 112 set x_val $expect_out(1,string) 113 } 114 -re "$gdb_prompt $" { } 115 } 116 if { $x_val == 0 || $x_val == 7 } { 117 if { $x_test != 1 } { 118 set x_test 0 119 } 120 } elseif { $x_val == 15 } { 121 if { $func1_step == -1 } { 122 # We passed func1 without stopping at the call site. 123 set x_test 1 124 } 125 } else { 126 set x_test 1 127 } 128 129 # func1 should not show up on backtraces if we are at its call 130 # site. 131 if { $bt_test != 1 } { 132 set bt_test [gdb_test "backtrace" "#0 \[^#]*main.*" ""] 133 } 134 135 # When we next over func1, we should not return to the same 136 # line. But we might go past the line, according to source 137 # code order, and then come back. A valid but odd layout is 138 # body of func1, load result's address into a register using 139 # the source location of "result = 0" several lines down, and 140 # then return to this line for the store. GCC 4.3 does that 141 # on ARM. 142 if { $last_was_func1_call } { 143 set func1_step 1 144 } elseif { $func1_step == -1 } { 145 set func1_step 0 146 } 147 set last_was_func1_call 1 148 149 send_gdb "next\r" 150 exp_continue 151 } 152 153 -re "result = func2 \\\(\\\);\r\n$gdb_prompt $" { 154 pass $msg 155 } 156} 157 158if { $x_test == 0 } { 159 pass "print x before func1" 160} else { 161 fail "print x before func1" 162} 163 164if { $bt_test == 0 } { 165 pass "backtrace does not include func1" 166} else { 167 fail "backtrace does not include func1" 168} 169 170if { $bt_test == 0 } { 171 pass "stepped over call to func1" 172} else { 173 fail "stepped over call to func1" 174} 175 176# Next, check that we can single step into inlined functions. We should always 177# "stop" at the call sites before entering them. 178runto_main 179 180set msg "step into func1" 181set saw_call_site 0 182gdb_test_multiple "list" $msg { 183 -re "($first|$opt).*$gdb_prompt $" { 184 send_gdb "step\r" 185 exp_continue 186 } 187 -re "result = func1.*$gdb_prompt $" { 188 set saw_call_site 1 189 send_gdb "step\r" 190 exp_continue 191 } 192 -re "func1 \\\(\\\) at .*\r\n$decimal.*bar \\\(\\\);\r\n$gdb_prompt $" { 193 if { $saw_call_site } { 194 pass $msg 195 } else { 196 fail $msg 197 } 198 } 199} 200 201# Check finish out of an inlined function. 202set msg "finish from func1" 203gdb_test_multiple "finish" $msg { 204 -re "result = func1 \\\(\\\);\r\n$gdb_prompt $" { 205 pass $msg 206 } 207 -re "($first|$opt).*$gdb_prompt $" { 208 # Whoops. We finished, but ended up back at an earlier line. Keep 209 # trying. 210 send_gdb "step\r" 211 exp_continue 212 } 213 -re "func1 \\\(\\\) at .*\r\n$decimal.*bar \\\(\\\);\r\n$gdb_prompt $" { 214 send_gdb "finish\r" 215 exp_continue 216 } 217} 218 219# Test some corner cases involving consecutive inlined functions. 220set line3 [gdb_get_line_number "set breakpoint 3 here"] 221gdb_breakpoint $line3 222gdb_continue_to_breakpoint "consecutive func1" 223 224gdb_test "next" ".*func1 .*first call.*" "next to first func1" 225set msg "next to second func1" 226gdb_test_multiple "next" $msg { 227 -re ".*func1 .*second call.*$gdb_prompt $" { 228 pass $msg 229 } 230 -re ".*marker .*$gdb_prompt $" { 231 # This assembles to two consecutive call instructions. 232 # Both appear to be at the same line, because they're 233 # in the body of the same inlined function. This is 234 # reasonable for the line table. GDB should take the 235 # containing block and/or function into account when 236 # deciding how far to step. The single line table entry 237 # is actually two consecutive instances of the same line. 238 kfail gdb/25884 $msg 239 } 240} 241 242# It is easier when the two inlined functions are not on the same line. 243set line4 [gdb_get_line_number "set breakpoint 4 here"] 244gdb_breakpoint $line4 245gdb_continue_to_breakpoint "func1 then func3" 246 247gdb_test "next" ".*func1 \\\(\\\);" "next to func1 before func3" 248gdb_test "next" ".*func3 \\\(\\\);" "next to func3" 249 250# Test finishing out of one thing and into another. 251set line5 [gdb_get_line_number "set breakpoint 5 here"] 252gdb_breakpoint $line5 253gdb_continue_to_breakpoint "finish into func1" 254 255gdb_test "next" ".*marker \\\(\\\);" "next to finish marker" 256gdb_test "step" ".*set breakpoint 2 here.*" "step into finish marker" 257 258# Some architectures will have one or more instructions after 259# the call instruction which still are part of the call sequence, 260# so it should be expected to return to the caller line after issue 261# a 'finish' command. 262gdb_test_multiple "finish" "finish from marker" { 263 -re "func1 \\\(\\\);.*\r\n$gdb_prompt $" { 264 pass "finish from marker to func1" 265 } 266 -re "marker \\\(\\\);.*\r\n$gdb_prompt $" { 267 pass "finish from marker" 268 gdb_test "step" "func1 \\\(\\\);.*" "step after marker to reach func1" 269 } 270} 271 272gdb_test "step" "bar \\\(\\\);" "step into func1 for finish" 273gdb_test "finish" "func3 \\\(\\\);" "finish from func1 to func3" 274 275# Test a deeper call stack. 276set line6 [gdb_get_line_number "set breakpoint 6 here"] 277gdb_breakpoint $line6 278gdb_continue_to_breakpoint "before the outer_inline call" 279gdb_test "step" "marker \\\(\\\) at .*" "reach 1 the outer_inline call" 280gdb_test_multiple "finish" "finish from marker" { 281 -re "main \\\(\\\) at .*outer_inline2 \\\(\\\);.*\r\n$gdb_prompt $" { 282 pass "reach outer_inline2" 283 } 284 -re "main \\\(\\\) at .*marker \\\(\\\);.*\r\n$gdb_prompt $" { 285 pass "finish from marker" 286 gdb_test "step" "outer_inline2 \\\(\\\);.*" "step after marker to reach outer_inline2" 287 } 288} 289gdb_test "bt" "#0 main.*" "backtrace at main of outer_inline" 290gdb_test "step" "outer_inline2 \\\(\\\) at .*" "enter outer_inline2" 291gdb_test "bt" "#0 outer_inline2.*#1 main.*" "backtrace at outer_inline2" 292gdb_test "step" "outer_inline1 \\\(\\\) at .*" "enter outer_inline1 from outer_inline2" 293 294set msg "backtrace at outer_inline1" 295gdb_test_multiple "bt" $msg { 296 -re "#0 outer_inline1.*#1 outer_inline2.*#2 main.*$gdb_prompt $" { 297 pass $msg 298 } 299 -re "#0 $hex in outer_inline1.*#1 outer_inline2.*#2 main.*$gdb_prompt $" { 300 # Binutils PR gas/6717. Gas moves .loc past .p2align and the 301 # leading nop of the inlined call appears to be on the same line 302 # as main's call to marker. 303 xfail $msg 304 gdb_test "step" "noinline \\\(\\\);" "step to call of noinline" 305 } 306} 307 308gdb_test "step" "noinline \\\(\\\) at .*" "enter noinline from outer_inline1" 309gdb_test "bt" "#0 noinline.*#1 .*outer_inline1.*#2 .*outer_inline2.*#3 main.*" "backtrace at noinline from outer_inline1" 310gdb_test "step" "inlined_fn \\\(\\\) at .*" "enter inlined_fn from noinline" 311gdb_test "bt" "#0 inlined_fn.*#1 noinline.*#2 .*outer_inline1.*#3 .*outer_inline2.*#4 main.*" "backtrace at inlined_fn from noinline" 312gdb_test "info frame" ".*inlined into frame.*" "inlined_fn from noinline inlined" 313gdb_test "up" "#1 noinline.*" "up to noinline" 314gdb_test "info frame" ".*\n called by frame.*" "noinline from outer_inline1 not inlined" 315gdb_test "up" "#2 .*outer_inline1.*" "up to outer_inline1" 316gdb_test "info frame" ".*inlined into frame.*" "outer_inline1 inlined" 317gdb_test "up" "#3 .*outer_inline2.*" "up to outer_inline2" 318gdb_test "info frame" ".*inlined into frame.*" "outer_inline2 inlined" 319gdb_test "up" "#4 main.*" "up from outer_inline2" 320gdb_test "info frame" ".*\n caller of frame.*" "main not inlined" 321 322gdb_exit 323 324# Send a CLI "step" command over MI. CLI_OUTPUT_RE is a regexp that 325# matches the expected CLI output. MESSAGE is used as test message. 326 327proc mi_cli_step {cli_output_re message} { 328 global mi_gdb_prompt 329 global srcfile 330 global decimal 331 332 send_gdb "interpreter-exec console \"step\"\n" 333 gdb_expect { 334 -re "\\^running\r\n\\*running,thread-id=\"all\"\r\n${mi_gdb_prompt}${cli_output_re}" { 335 pass $message 336 } 337 timeout { 338 fail "$message (timeout)" 339 } 340 eof { 341 fail "$message (eof)" 342 } 343 } 344 345 # mi_expect_stop handles "set mi-async on/off" differences. 346 mi_expect_stop "end-stepping-range" "\[^\r\n\]*" "" ".*$srcfile" "$decimal" \ 347 "" "got *stopped for $message" 348} 349 350# Test that stepping into an inlined function with the CLI "step" 351# command run while the top interpreter is MI results in the expected 352# CLI output sent to MI's console. 353with_test_prefix "mi" { 354 if [mi_gdb_start] { 355 continue 356 } 357 mi_gdb_load ${binfile} 358 mi_runto main 359 360 set line_number [gdb_get_line_number "set mi break here"] 361 mi_gdb_test "-break-insert ${srcfile}:${line_number}" \ 362 {\^done,bkpt=.number="2",type="breakpoint".*\}} \ 363 "set breakpoint" 364 365 mi_execute_to "exec-continue" "breakpoint-hit" "main" "" ".*" ".*" \ 366 { "" "disp=\"keep\"" } "breakpoint hit" 367 368 incr line_number 2 369 370 # Step to the line that does an inline call. 371 set re "~\"$line_number\\\\t result = func1 \\(\\);\\\\n\"\r\n" 372 mi_cli_step "${re}" "step to inline call" 373 374 # Step into the inlined function. 375 set re [multi_line \ 376 "~\"func1 \\(\\) at .*$srcfile:$decimal\\\\n\"" \ 377 "~\"$decimal\\\\t bar \\(\\);\\\\n\"\r\n"] 378 mi_cli_step "${re}" "step into inline call" 379} 380