gdb/testsuite/gdb.dwarf2/dw2-reg-undefined.exp

   1 # Copyright 2013-2024 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 load_lib dwarf.exp
  16
  17 # This test can only be run on targets which support DWARF-2 and use gas.
  18 require dwarf2_support
  19
  20 # This test can only be run on x86_64 targets.
  21 require is_x86_64_m64_target
  22
  23 standard_testfile .S
  24
  25 if { [prepare_for_testing "failed to prepare" $testfile $srcfile {nodebug nopie}] } {
  26     return -1
  27 }
  28
  29 if ![runto stop_frame] {
  30     perror "Failed to stop in stop_frame"
  31     return -1
  32 }
  33
  34 gdb_test "bt" "#0  (0x\[0-9a-f\]+ in )?stop_frame \[^\r\n\]*\r\n#1  \[^\r\n\]*first_frame \[^\r\n\]*\r\n#2  \[^\r\n\]*main\[^\r\n\]*" \
  35     "backtrace from stop_frame"
  36
  37 for {set f 0} {$f < 3} {incr f} {
  38     if {${f} == 0} {
  39         set pattern_rax_rbx_rcx_print "$hex"
  40         set pattern_rax_rbx_rcx_info "$hex\\s+$decimal"
  41         set pattern_r8_r9_print "$hex"
  42         set pattern_r8_r9_info "$hex\\s+$decimal"
  43     } else {
  44         set pattern_rax_rbx_rcx_print "<not saved>"
  45         set pattern_rax_rbx_rcx_info "<not saved>"
  46         set pattern_r8_r9_print "$hex"
  47         set pattern_r8_r9_info "$hex\\s+$decimal"
  48     }
  49
  50     # Select frame.
  51     gdb_test "frame ${f}" "#${f}.*" "switch to frame ${f}"
  52
  53     gdb_test "p/x \$rax" ".*$pattern_rax_rbx_rcx_print.*" \
  54         "print \$rax in frame ${f}"
  55     gdb_test "p/x \$rbx" "$pattern_rax_rbx_rcx_print" \
  56         "print \$rbx in frame ${f}"
  57     gdb_test "p/x \$rcx" "$pattern_rax_rbx_rcx_print" \
  58         "print \$rcx in frame ${f}"
  59
  60     gdb_test "p/x \$r8" "$pattern_r8_r9_print" "print \$r8 in frame ${f}"
  61     gdb_test "p/x \$r9" "$pattern_r8_r9_print" "print \$r9 in frame ${f}"
  62
  63
  64     # Display register values.
  65     gdb_test "info registers rax rbx rcx r8 r9" \
  66         [multi_line "rax\\s+${pattern_rax_rbx_rcx_info}\\s*" \
  67                     "rbx\\s+${pattern_rax_rbx_rcx_info}\\s*" \
  68                     "rcx\\s+${pattern_rax_rbx_rcx_info}\\s*" \
  69                     "r8\\s+${pattern_r8_r9_info}\\s*" \
  70                     "r9\\s+${pattern_r8_r9_info}\\s*"] \
  71         "Check values of rax, rbx, rcx, r8, r9 in frame ${f}"
  72 }
  73
  74 # Test that the debug log statement in frame_unwind_register_value produces
  75 # "not saved" and not "optimized out".
  76 gdb_test "set debug frame 1"
  77 gdb_test {print $rax} [multi_line \
  78                         {    \[frame\] frame_unwind_register_value: frame=0, regnum=0\(rax\)} \
  79                         {    \[frame\] frame_unwind_register_value:   -> <not saved>} \
  80                         {.*}]
  81 gdb_test "set debug frame 0"
  82
  83 # Test that history values show "not saved" and not "optimized out".
  84 gdb_test "print" " = <not saved>"
  85
  86 # Test that convenience variables _don't_ show "not saved".
  87 gdb_test {print $foo = $rax} " = <optimized out>"