gdb/testsuite/gdb.opt/inline-cmds.exp

   1 # Copyright 2008-2021 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
  16 load_lib mi-support.exp
  17 set MIFLAGS "-i=mi"
  18
  19 standard_testfile .c inline-markers.c
  20
  21 if {[prepare_for_testing "failed to prepare" $testfile \
  22          [list $srcfile $srcfile2] {debug additional_flags=-Winline}]} {
  23     return -1
  24 }
  25
  26 gdb_test_no_output "set listsize 1"
  27
  28 runto_main
  29
  30 get_compiler_info
  31 get_debug_format
  32 if { [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.
  39 set line1 [gdb_get_line_number "set breakpoint 1 here" ${srcfile2}]
  40 gdb_breakpoint $srcfile2:$line1
  41 set line2 [gdb_get_line_number "set breakpoint 2 here" ${srcfile2}]
  42 gdb_breakpoint $srcfile2:$line2
  43
  44 gdb_test "continue" ".*set breakpoint 1 here.*" "continue to bar (1)"
  45 gdb_test "backtrace" "#0  bar.*#1  .*func1.*#2  .*main.*" \
  46     "backtrace from bar (1)"
  47 gdb_test "up" "#1  .*func1.*" "up from bar (1)"
  48 gdb_test "info frame" ".*inlined into frame.*" "func1 inlined (1)"
  49
  50 gdb_test "continue" ".*set breakpoint 1 here.*" "continue to bar (2)"
  51 gdb_test "backtrace" "#0  bar.*#1  .*func1.*#2  .*func2.*#3  .*main.*" \
  52     "backtrace from bar (2)"
  53 gdb_test "up" "#1  .*func1.*" "up from bar (2)"
  54 gdb_test "info frame" ".*inlined into frame.*" "func1 inlined (2)"
  55 gdb_test "up" "#2  .*func2.*" "up from func1 (2)"
  56 gdb_test "info frame" ".*inlined into frame.*" "func2 inlined (2)"
  57
  58 gdb_test "continue" ".*set breakpoint 2 here.*" "continue to marker"
  59 gdb_test "backtrace" "#0  marker.*#1  .*main.*" "backtrace from marker"
  60 gdb_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.
  64 delete_breakpoints
  65 runto_main
  66
  67 # The lines before the first inlined call.
  68 set first "x = 7|y = 8"
  69
  70 # Some extra lines that end up in our stepping due to code motion.
  71 set 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.
  75 set msg "next over inlined functions"
  76 gdb_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.
  87 runto_main
  88
  89 # Like the return value of gdb_test: -1 something is wrong, 0 passed, 1 failed.
  90 set bt_test -1
  91 set x_test -1
  92 set func1_step -1
  93
  94 set last_was_func1_call 0
  95 set msg "next past inlined func1"
  96 gdb_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
 158 if { $x_test == 0 } {
 159     pass "print x before func1"
 160 } else {
 161     fail "print x before func1"
 162 }
 163
 164 if { $bt_test == 0 } {
 165     pass "backtrace does not include func1"
 166 } else {
 167     fail "backtrace does not include func1"
 168 }
 169
 170 if { $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.
 178 runto_main
 179
 180 set msg "step into func1"
 181 set saw_call_site 0
 182 gdb_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.
 202 set msg "finish from func1"
 203 gdb_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.
 220 set line3 [gdb_get_line_number "set breakpoint 3 here"]
 221 gdb_breakpoint $line3
 222 gdb_continue_to_breakpoint "consecutive func1"
 223
 224 gdb_test "next" ".*func1 .*first call.*" "next to first func1"
 225 gdb_test "next" ".*func1 .*second call.*" "next to second func1"
 226
 227 # It is easier when the two inlined functions are not on the same line.
 228 set line4 [gdb_get_line_number "set breakpoint 4 here"]
 229 gdb_breakpoint $line4
 230 gdb_continue_to_breakpoint "func1 then func3"
 231
 232 gdb_test "next" ".*func1 \\\(\\\);" "next to func1 before func3"
 233 gdb_test "next" ".*func3 \\\(\\\);" "next to func3"
 234
 235 # Test finishing out of one thing and into another.
 236 set line5 [gdb_get_line_number "set breakpoint 5 here"]
 237 gdb_breakpoint $line5
 238 gdb_continue_to_breakpoint "finish into func1"
 239
 240 gdb_test "next" ".*marker \\\(\\\);" "next to finish marker"
 241 gdb_test "step" ".*set breakpoint 2 here.*" "step into finish marker"
 242
 243 # Some architectures will have one or more instructions after
 244 # the call instruction which still are part of the call sequence,
 245 # so it should be expected to return to the caller line after issue
 246 # a 'finish' command.
 247 gdb_test_multiple "finish" "finish from marker" {
 248     -re "func1 \\\(\\\);.*\r\n$gdb_prompt $" {
 249         pass "finish from marker to func1"
 250     }
 251     -re "marker \\\(\\\);.*\r\n$gdb_prompt $" {
 252         pass "finish from marker"
 253         gdb_test "step" "func1 \\\(\\\);.*" "step after marker to reach func1"
 254     }
 255 }
 256
 257 gdb_test "step" "bar \\\(\\\);" "step into func1 for finish"
 258 gdb_test "finish" "func3 \\\(\\\);" "finish from func1 to func3"
 259
 260 # Test a deeper call stack.
 261 set line6 [gdb_get_line_number "set breakpoint 6 here"]
 262 gdb_breakpoint $line6
 263 gdb_continue_to_breakpoint "before the outer_inline call"
 264 gdb_test "step" "marker \\\(\\\) at .*" "reach 1 the outer_inline call"
 265 gdb_test_multiple "finish" "finish from marker" {
 266     -re "main \\\(\\\) at .*outer_inline2 \\\(\\\);.*\r\n$gdb_prompt $" {
 267         pass "reach outer_inline2"
 268     }
 269     -re "main \\\(\\\) at .*marker \\\(\\\);.*\r\n$gdb_prompt $" {
 270         pass "finish from marker"
 271         gdb_test "step" "outer_inline2 \\\(\\\);.*" "step after marker to reach outer_inline2"
 272     }
 273 }
 274 gdb_test "bt" "#0  main.*" "backtrace at main of outer_inline"
 275 gdb_test "step" "outer_inline2 \\\(\\\) at .*" "enter outer_inline2"
 276 gdb_test "bt" "#0  outer_inline2.*#1  main.*" "backtrace at outer_inline2"
 277 gdb_test "step" "outer_inline1 \\\(\\\) at .*" "enter outer_inline1 from outer_inline2"
 278
 279 set msg "backtrace at outer_inline1"
 280 gdb_test_multiple "bt" $msg {
 281     -re "#0  outer_inline1.*#1  outer_inline2.*#2  main.*$gdb_prompt $" {
 282         pass $msg
 283     }
 284     -re "#0  $hex in outer_inline1.*#1  outer_inline2.*#2  main.*$gdb_prompt $" {
 285         # Binutils PR gas/6717.  Gas moves .loc past .p2align and the
 286         # leading nop of the inlined call appears to be on the same line
 287         # as main's call to marker.
 288         xfail $msg
 289         gdb_test "step" "noinline \\\(\\\);" "step to call of noinline"
 290     }
 291 }
 292
 293 gdb_test "step" "noinline \\\(\\\) at .*" "enter noinline from outer_inline1"
 294 gdb_test "bt" "#0  noinline.*#1  .*outer_inline1.*#2  .*outer_inline2.*#3  main.*" "backtrace at noinline from outer_inline1"
 295 gdb_test "step" "inlined_fn \\\(\\\) at .*" "enter inlined_fn from noinline"
 296 gdb_test "bt" "#0  inlined_fn.*#1  noinline.*#2  .*outer_inline1.*#3  .*outer_inline2.*#4  main.*" "backtrace at inlined_fn from noinline"
 297 gdb_test "info frame" ".*inlined into frame.*" "inlined_fn from noinline inlined"
 298 gdb_test "up" "#1  noinline.*" "up to noinline"
 299 gdb_test "info frame" ".*\n called by frame.*" "noinline from outer_inline1 not inlined"
 300 gdb_test "up" "#2  .*outer_inline1.*" "up to outer_inline1"
 301 gdb_test "info frame" ".*inlined into frame.*" "outer_inline1 inlined"
 302 gdb_test "up" "#3  .*outer_inline2.*" "up to outer_inline2"
 303 gdb_test "info frame" ".*inlined into frame.*" "outer_inline2 inlined"
 304 gdb_test "up" "#4  main.*" "up from outer_inline2"
 305 gdb_test "info frame" ".*\n caller of frame.*" "main not inlined"
 306
 307 gdb_exit
 308
 309 # Send a CLI "step" command over MI.  CLI_OUTPUT_RE is a regexp that
 310 # matches the expected CLI output.  MESSAGE is used as test message.
 311
 312 proc mi_cli_step {cli_output_re message} {
 313     global mi_gdb_prompt
 314     global srcfile
 315     global decimal
 316
 317     send_gdb "interpreter-exec console \"step\"\n"
 318     gdb_expect {
 319         -re "\\^running\r\n\\*running,thread-id=\"all\"\r\n${mi_gdb_prompt}${cli_output_re}" {
 320             pass $message
 321         }
 322         timeout {
 323             fail "$message (timeout)"
 324         }
 325         eof {
 326             fail "$message (eof)"
 327         }
 328     }
 329
 330     # mi_expect_stop handles "set mi-async on/off" differences.
 331     mi_expect_stop "end-stepping-range" "\[^\r\n\]*" "" ".*$srcfile" "$decimal" \
 332         "" "got *stopped for $message"
 333 }
 334
 335 # Test that stepping into an inlined function with the CLI "step"
 336 # command run while the top interpreter is MI results in the expected
 337 # CLI output sent to MI's console.
 338 with_test_prefix "mi" {
 339     if [mi_gdb_start] {
 340         continue
 341     }
 342     mi_gdb_load ${binfile}
 343     mi_runto_main
 344
 345     set line_number [gdb_get_line_number "set mi break here"]
 346     mi_gdb_test "-break-insert ${srcfile}:${line_number}" \
 347         {\^done,bkpt=.number="2",type="breakpoint".*\}} \
 348         "set breakpoint"
 349
 350     mi_execute_to "exec-continue" "breakpoint-hit" "main" "" ".*" ".*" \
 351         { "" "disp=\"keep\"" } "breakpoint hit"
 352
 353     incr line_number 2
 354
 355     # Step to the line that does an inline call.
 356     set re "~\"$line_number\\\\t  result = func1 \\(\\);\\\\n\"\r\n"
 357     mi_cli_step "${re}" "step to inline call"
 358
 359     # Step into the inlined function.
 360     set re [multi_line \
 361                 "~\"func1 \\(\\) at .*$srcfile:$decimal\\\\n\"" \
 362                 "~\"$decimal\\\\t  bar \\(\\);\\\\n\"\r\n"]
 363     mi_cli_step "${re}" "step into inline call"
 364 }