gdb/testsuite/gdb.arch/ppc64-isa207-atomic-inst.exp

   1 # Copyright 2017-2021 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 # This file is part of the gdb testsuite.
  17
  18 # Test single stepping through POWER8/ISA 2.07 atomic sequences beginning with
  19 # a lbarx/lharx/lqarx instruction and ending with a stbcx/sthcx/stqxc
  20 # instruction.  Note that although lbarx, lharx, stbcx and sthcx instructions
  21 # were introduced in ISA 2.06, they were implemented only in POWER8 (ISA 2.07).
  22
  23
  24 if {![istarget "powerpc*"] || ![is_lp64_target]} {
  25     untested "skipping powerpc isa 207 atomic sequences test"
  26     return
  27 }
  28
  29 standard_testfile  .c .S
  30
  31 if { [prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2" \
  32       {debug quiet}] } {
  33     return -1
  34 }
  35
  36 # The test proper.  DISPLACED is true if we should try with displaced
  37 # stepping.
  38
  39 proc do_test { displaced } {
  40     global decimal hex
  41     global gdb_prompt inferior_exited_re srcfile srcfile2
  42
  43     if ![runto_main] then {
  44         untested "could not run to main"
  45         return -1
  46     }
  47
  48     gdb_test_no_output "set displaced-stepping $displaced"
  49
  50     gdb_breakpoint "test_atomic_sequences" "Breakpoint $decimal at $hex" \
  51         "set the breakpoint at the start of the test function"
  52
  53     gdb_test_multiple "continue" "Continue until lbarx/stbcx start breakpoint" {
  54       -re "$inferior_exited_re with code 01.\[\r\n\]+$gdb_prompt $" {
  55         unsupported "POWER8/ISA 2.07 atomic instructions not supported."
  56         return -1
  57       }
  58       -re "Continuing.*Breakpoint $decimal.*$gdb_prompt $" {
  59         pass "continue until test_atomic_sequences function"
  60       }
  61     }
  62
  63     set bp1 [gdb_get_line_number "lbarx" "$srcfile2"]
  64     gdb_breakpoint "$bp1" "Breakpoint $decimal at $hex" \
  65         "set the breakpoint at the start of the lbarx/stbcx sequence"
  66
  67     set bp2 [gdb_get_line_number "lharx" "$srcfile2"]
  68     gdb_breakpoint "$bp2" "Breakpoint $decimal at $hex" \
  69         "set the breakpoint at the start of the lharx/sthcx sequence"
  70
  71     set bp3 [gdb_get_line_number "lqarx" "$srcfile2"]
  72     gdb_breakpoint "$bp3" "Breakpoint $decimal at $hex" \
  73         "set the breakpoint at the start of the lqarx/stqcx sequence"
  74
  75     gdb_test continue "Continuing.*Breakpoint $decimal.*" \
  76         "continue until lbarx/stbcx start breakpoint"
  77
  78     gdb_test nexti "bne.*1b" \
  79         "step through the lbarx/stbcx sequence"
  80
  81     gdb_test continue "Continuing.*Breakpoint $decimal.*" \
  82         "continue until lharx/sthcx start breakpoint"
  83
  84     gdb_test nexti "bne.*2b" \
  85         "step through the lharx/sthcx sequence"
  86
  87     gdb_test continue "Continuing.*Breakpoint $decimal.*" \
  88         "continue until ldqrx/stqcx start breakpoint"
  89
  90     gdb_test nexti "bne.*3b" \
  91         "step through the lqarx/stqcx sequence"
  92 }
  93
  94 foreach displaced { "off" "on" } {
  95     with_test_prefix "displaced=$displaced" {
  96         do_test $displaced
  97     }
  98 }