gdb/testsuite/gdb.base/return.exp

   1 # Copyright (C) 1992-2016 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 was written by Jeff Law. (law@cs.utah.edu)
  17
  18 if { [prepare_for_testing return.exp "return"] } {
  19     return -1
  20 }
  21
  22 proc return_tests { } {
  23     global gdb_prompt
  24
  25
  26     if { ! [ runto func1 ] } then { return 0 }
  27
  28     gdb_test_multiple "return" "simple return" {
  29         -re "Make .* return now.*y or n. $" {
  30             send_gdb "y\n"
  31             exp_continue
  32         }
  33         -re "func1 ..;.*$gdb_prompt $" {
  34             send_gdb "step\n"
  35             exp_continue
  36         }
  37         -re ".*in main after func1.*$gdb_prompt $" {
  38             pass "simple return"
  39         }
  40     }
  41
  42     # Set breakpoints in other interesting functions.
  43     gdb_test "break func2" ".*" "break func2"
  44     gdb_test "break func3" ".*" "break func3"
  45
  46     gdb_test "continue" "return -5;" "continue to return of -5"
  47
  48     gdb_test_multiple "return 5" "return value 5" {
  49         -re "Make .* return now.*y or n. $" {
  50             send_gdb "y\n"
  51             exp_continue
  52         }
  53         -re ".*tmp2 = func2.*$gdb_prompt $" {
  54             # pass without comment
  55         }
  56     }
  57
  58     gdb_test "next" "tmp3 = func3.*" "next over call to func2"
  59
  60     gdb_test "p tmp2" ".* = 5" "correct value returned (integer test)"
  61
  62     gdb_test "continue" "return -5.0;" "continue to return of -5.0"
  63
  64     # Return of a double does not work for 68hc11 (need struct return
  65     # in memory).
  66     setup_xfail "m6811-*-*"
  67
  68     gdb_test_multiple "return 5.0" "return value 5.0" {
  69         -re "Make .* return now.*y or n. $" {
  70             send_gdb "y\n"
  71             exp_continue
  72         }
  73         -re ".*tmp3 = func3.*$gdb_prompt $" {
  74             # pass without comment
  75         }
  76     }
  77
  78     setup_xfail "m6811-*-*"
  79     gdb_test "next" "printf.*" "next over call to func3"
  80
  81     # This test also fails for sparc Solaris 2.3 & 2.4, but passes under 2.5
  82     # At the time the `next' is issued, the floating point unit for the
  83     # process is not yet initialized, and the storing of the floating
  84     # point value to the floating point return register is ignored.
  85     # Xfail it for current versions that are known to fail.  Presumably
  86     # if some future version does initialize the floating point unit at
  87     # process start, making this test pass, it will be for a version that
  88     # is not xfailed.
  89
  90     setup_xfail "sparc-*-solaris2.3*" "sparc-*-solaris2.4*" "m6811-*-*"
  91     if ![target_info exists gdb,skip_float_tests] {
  92         gdb_test "p tmp3" ".* = 5.*" \
  93             "correct value returned double test (known problem with sparc solaris)"
  94     }
  95 }
  96
  97 set prev_timeout $timeout
  98 set timeout 30
  99 return_tests
 100 set timeout $prev_timeout