gdb/testsuite/gdb.arch/mips-fpregset-core.exp

   1 # Copyright 2018-2019 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 # Test MIPS Floating Point General Register handling in core files.
  17
  18 if { ![istarget "mips*-*-*"] } then {
  19     verbose "Skipping MIPS Floating Point General Register tests."
  20     return
  21 }
  22
  23 standard_testfile
  24
  25 if { [prepare_for_testing "failed to prepare" ${testfile}] } {
  26     return
  27 }
  28
  29 # Procedure to get current content of all floating-point registers.
  30 proc mips_fpregset_core_fetch_float_registers { test } {
  31     global gdb_prompt
  32
  33     set all_registers_lines {}
  34     set bad -1
  35     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
  36     # corrupting the next matches.
  37     if { [gdb_test_multiple "info registers float" $test {
  38         -re "info registers float\r\n" {
  39             exp_continue
  40         }
  41         -ex "The program has no registers now" {
  42             set bad 1
  43             exp_continue
  44         }
  45         -re "^\(?:fcsr\|fir\):\[ \t\]+\[^\r\n\]+\r\n" {
  46             # Filter out control registers.  They may or may not be a part
  47             # of the float group depending on whether XML descriptions are
  48             # used or not.
  49             exp_continue
  50         }
  51         -re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" {
  52             lappend all_registers_lines $expect_out(0,string)
  53             exp_continue
  54         }
  55         -re "$gdb_prompt $" {
  56             incr bad
  57         }
  58         -re "^\[^\r\n\]+\r\n" {
  59             if { !$bad } {
  60                 warning "Unrecognized output: $expect_out(0,string)"
  61                 set bad 1
  62             }
  63             exp_continue
  64         }
  65     }] != 0 } {
  66         return {}
  67     }
  68
  69     if { $bad } {
  70         fail $test
  71         return {}
  72     }
  73
  74     pass $test
  75     return $all_registers_lines
  76 }
  77
  78 # Generate a native core file.
  79
  80 set corefile [core_find $binfile]
  81 set core_supported [expr {$corefile != ""}]
  82
  83 # Generate a core file with "gcore".
  84
  85 clean_restart ${binfile}
  86
  87 runto break_here
  88
  89 # Check if we have an FPU available.
  90 gdb_test_multiple "show mipsfpu" "check for MIPS floating-point coprocessor" {
  91     -re "The MIPS floating-point coprocessor\
  92          .*\(absent\|unknown\).*$gdb_prompt $" {
  93         unsupported "no MIPS floating-point coprocessor in the processor"
  94         return
  95     }
  96     -re "The MIPS floating-point coprocessor .*$gdb_prompt $" {
  97         verbose "MIPS floating-point coprocessor check successful."
  98     }
  99     default {
 100         fail
 101         return
 102     }
 103 }
 104
 105 # Save live FGR register contents.
 106 set live_fgr_contents [mips_fpregset_core_fetch_float_registers \
 107     "retrieve live FGR register contents"]
 108
 109 set gcorefile [standard_output_file gcore.test]
 110 set gcore_supported [gdb_gcore_cmd "$gcorefile" "gcore"]
 111
 112 # Restart gdb and load COREFILE as a core file.  SUPPORTED is true iff
 113 # the core was generated successfully; otherwise, the tests are marked
 114 # unsupported.
 115 #
 116 proc mips_fpregset_core_test { supported corefile } {
 117     upvar live_fgr_contents live_fgr_contents
 118     upvar target_triplet target_triplet
 119     upvar host_triplet host_triplet
 120     upvar binfile binfile
 121
 122     clean_restart ${binfile}
 123
 124     set test "load core file"
 125     if { $supported } {
 126         set core_loaded [gdb_core_cmd $corefile $test]
 127     } else {
 128         set core_loaded 0
 129         unsupported $test
 130     }
 131
 132     if { $core_loaded == 1 } {
 133         set test "core file FGR register contents"
 134         set core_fgr_contents \
 135             [mips_fpregset_core_fetch_float_registers "retrieve $test"]
 136         if { $core_fgr_contents == $live_fgr_contents } then {
 137             pass $test
 138         } else {
 139             fail $test
 140         }
 141     } else {
 142         unsupported $test
 143     }
 144 }
 145
 146 with_test_prefix "native" {
 147     mips_fpregset_core_test $core_supported $corefile
 148 }
 149
 150 with_test_prefix "gcore" {
 151     mips_fpregset_core_test $gcore_supported $gcorefile
 152 }
 153
 154 gdb_exit