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

   1 # Copyright 2013-2021 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 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 # This test can only be run on x86_64 targets.
  23 if {![istarget "x86_64-*-*"] || ![is_lp64_target]} {
  24     return 0
  25 }
  26
  27 standard_testfile .S
  28
  29 if { [prepare_for_testing "failed to prepare" $testfile $srcfile {nodebug nopie}] } {
  30     return -1
  31 }
  32
  33 if ![runto stop_frame] {
  34     perror "Failed to stop in stop_frame"
  35     return -1
  36 }
  37
  38 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\[^\r\n\]*" \
  39     "backtrace from stop_frame"
  40
  41 for {set f 0} {$f < 3} {incr f} {
  42     if {${f} == 0} {
  43         set pattern_rax_rbx_rcx_print "$hex"
  44         set pattern_rax_rbx_rcx_info "$hex\\s+$decimal"
  45         set pattern_r8_r9_print "$hex"
  46         set pattern_r8_r9_info "$hex\\s+$decimal"
  47     } else {
  48         set pattern_rax_rbx_rcx_print "<not saved>"
  49         set pattern_rax_rbx_rcx_info "<not saved>"
  50         set pattern_r8_r9_print "$hex"
  51         set pattern_r8_r9_info "$hex\\s+$decimal"
  52     }
  53
  54     # Select frame.
  55     gdb_test "frame ${f}" "#${f}.*" "switch to frame ${f}"
  56
  57     gdb_test "p/x \$rax" ".*$pattern_rax_rbx_rcx_print.*" \
  58         "print \$rax in frame ${f}"
  59     gdb_test "p/x \$rbx" "$pattern_rax_rbx_rcx_print" \
  60         "print \$rbx in frame ${f}"
  61     gdb_test "p/x \$rcx" "$pattern_rax_rbx_rcx_print" \
  62         "print \$rcx in frame ${f}"
  63
  64     gdb_test "p/x \$r8" "$pattern_r8_r9_print" "print \$r8 in frame ${f}"
  65     gdb_test "p/x \$r9" "$pattern_r8_r9_print" "print \$r9 in frame ${f}"
  66
  67
  68     # Display register values.
  69     gdb_test "info registers rax rbx rcx r8 r9" \
  70         [multi_line "rax\\s+${pattern_rax_rbx_rcx_info}\\s*" \
  71                     "rbx\\s+${pattern_rax_rbx_rcx_info}\\s*" \
  72                     "rcx\\s+${pattern_rax_rbx_rcx_info}\\s*" \
  73                     "r8\\s+${pattern_r8_r9_info}\\s*" \
  74                     "r9\\s+${pattern_r8_r9_info}\\s*"] \
  75         "Check values of rax, rbx, rcx, r8, r9 in frame ${f}"
  76 }
  77
  78 # Test that the debug log statement in frame_unwind_register_value produces
  79 # "not saved" and not "optimized out".
  80 gdb_test "set debug frame 1"
  81 gdb_test {print $rax} [multi_line \
  82                         {    \[frame\] frame_unwind_register_value: frame=0, regnum=0\(rax\)} \
  83                         {    \[frame\] frame_unwind_register_value:   -> <not saved>} \
  84                         {.*}]
  85 gdb_test "set debug frame 0"
  86
  87 # Test that history values show "not saved" and not "optimized out".
  88 gdb_test "print" " = <not saved>"
  89
  90 # Test that convenience variables _don't_ show "not saved".
  91 gdb_test {print $foo = $rax} " = <optimized out>"