gdb/testsuite/gdb.base/return.exp

   1 # Copyright (C) 1992, 1997, 2001, 2007 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 # Please email any bugs, comments, and/or additions to this file to:
  17 # bug-gdb@prep.ai.mit.edu
  18
  19 # This file was written by Jeff Law. (law@cs.utah.edu)
  20
  21 if $tracelevel then {
  22         strace $tracelevel
  23 }
  24
  25 set prms_id 0
  26 set bug_id 0
  27
  28 set testfile "return"
  29 set srcfile ${testfile}.c
  30 set binfile ${objdir}/${subdir}/${testfile}
  31 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  32      untested return.exp
  33      return -1
  34 }
  35
  36 proc return_tests { } {
  37     global gdb_prompt
  38
  39
  40     if { ! [ runto func1 ] } then { return 0 }
  41     send_gdb "return\n"
  42     gdb_expect {
  43         -re "Make .* return now.*y or n. $" {
  44             send_gdb "y\n"
  45             exp_continue
  46         }
  47         -re "func1 ..;.*$gdb_prompt $" {
  48             send_gdb "step\n"
  49             exp_continue
  50         }
  51     -re ".*in main after func1.*$gdb_prompt $" { pass "simple return" }
  52     -re "$gdb_prompt $" { fail "simple return" }
  53     timeout { fail "(timeout) simple return" }
  54     }
  55
  56     # Set breakpoints in other interesting functions.
  57     gdb_test "break func2" "" "break func2"
  58     gdb_test "break func3" "" "break func3"
  59
  60     gdb_test "continue" "return -5;" "continue to return of -5"
  61     send_gdb "return 5\n"
  62     gdb_expect {
  63         -re "Make .* return now.*y or n. $" {
  64             send_gdb "y\n"
  65             exp_continue
  66         }
  67     -re ".*tmp2 = func2.*$gdb_prompt $" { }
  68     -re "$gdb_prompt $" { fail "did not return (integer test)" }
  69     timeout { fail "(timeout) did not return (integer test)" }
  70     }
  71     gdb_test "next" "tmp3 = func3.*" "next over call to func2"
  72
  73     gdb_test "p tmp2" ".* = 5" "correct value returned (integer test)"
  74
  75     gdb_test "continue" "return -5.0;" "continue to return of -5.0"
  76
  77     # Return of a double does not work for 68hc11 (need struct return
  78     # in memory).
  79     setup_xfail "m6811-*-*"
  80     send_gdb "return 5.0\n"
  81     gdb_expect {
  82         -re "Make .* return now.*y or n. $" {
  83             send_gdb "y\n"
  84             exp_continue
  85         }
  86         -re ".*tmp3 = func3.*$gdb_prompt $" { }
  87         -re "$gdb_prompt $" { fail "did not return (double test)" }
  88         timeout { fail "(timeout) did not return (double test)" }
  89     }
  90
  91     setup_xfail "m6811-*-*"
  92     gdb_test "next" "printf.*" "next over call to func3"
  93
  94     # This test also fails for sparc Solaris 2.3 & 2.4, but passes under 2.5
  95     # At the time the `next' is issued, the floating point unit for the
  96     # process is not yet initialized, and the storing of the floating
  97     # point value to the floating point return register is ignored.
  98     # Xfail it for current versions that are known to fail.  Presumably
  99     # if some future version does initialize the floating point unit at
 100     # process start, making this test pass, it will be for a version that
 101     # is not xfailed.
 102
 103     setup_xfail "sparc-*-solaris2.3*" "sparc-*-solaris2.4*" "m6811-*-*"
 104     gdb_test "p tmp3" ".* = 5.*" "correct value returned double test (known problem with sparc solaris)"
 105 }
 106
 107
 108 # Start with a fresh gdb.
 109
 110 gdb_exit
 111 gdb_start
 112 gdb_reinitialize_dir $srcdir/$subdir
 113 gdb_load ${binfile}
 114
 115 set timeout 30
 116 return_tests