gdb/testsuite/gdb.arch/alpha-step.exp

   1 # Copyright 2005, 2007, 2008, 2009, 2010, 2011 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 if $tracelevel {
  17     strace $tracelevel
  18 }
  19
  20
  21 if ![istarget "alpha*-*-*"] then {
  22     verbose "Skipping alpha step tests."
  23     return
  24 }
  25
  26 set testfile "alpha-step"
  27 set srcfile ${testfile}.c
  28 set binfile ${objdir}/${subdir}/${testfile}
  29
  30 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
  31     unsupported "Testcase compile failed."
  32     return -1
  33 }
  34
  35 gdb_exit
  36 gdb_start
  37 gdb_reinitialize_dir $srcdir/$subdir
  38 gdb_load ${binfile}
  39
  40 proc test_stepi {function } {
  41     # Restart the program from scratch. If GDB got confused during one
  42     # of the previous tests, this makes sure that it doesn't affect
  43     # this series of tests.
  44     if ![runto_main] then {
  45         fail "Can't run to main"
  46         return 0
  47     }
  48
  49     # Insert a breakpoint on the FP branch instruction inside FUNCTION.
  50     # Since the function has been hand written, we know this instruction
  51     # is a "fb$function" located at FUNCTION+4.
  52     gdb_test "break *$function+4" \
  53              "Breakpoint .* at .*" \
  54              "breakpoint on fb$function instruction"
  55
  56     gdb_test "continue" \
  57              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  58              "continue to fb$function instruction (first call)"
  59
  60     # Extra check to make sure we stopped on the FP branch instruction.
  61
  62     gdb_test "x /i \$pc" \
  63              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  64              "Check breakpoint on fb$function instruction (first call)"
  65
  66     # Step test, followed by the check that we landed on the expected
  67     # instruction (the testcase should be written in such a way that
  68     # the branch is taken on the first call to this function.
  69
  70     gdb_test "stepi" \
  71              "0x\[0-9a-fA-F\]+.*" \
  72              "stepi on fb$function (first call)"
  73
  74     gdb_test "x /i \$pc" \
  75              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret.*" \
  76              "Check stepi over fb$function stopped on ret"
  77
  78     # Continue again. FUNCTION should be called a second time, this time
  79     # with an argument such that the FP branch will not be taken.
  80
  81     gdb_test "continue" \
  82              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  83              "continue to fb$function instruction (second call)"
  84
  85     # Extra check to make sure we stopped on the FP branch instruction.
  86
  87     gdb_test "x /i \$pc" \
  88              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  89              "Check breakpoint on fb$function instruction (second call)"
  90
  91     # Step test, branch should not be taken.
  92
  93     gdb_test "stepi" \
  94              "0x\[0-9a-fA-F\]+.*" \
  95              "stepi on fb$function (branch not taken)"
  96
  97     # Extra check to verify that we landed on the instruction we expected.
  98
  99     gdb_test "x /i \$pc" \
 100              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg.*" \
 101              "Check stepi over fb$function stopped on fneg instruction"
 102
 103 }
 104
 105 test_stepi "gt"
 106 test_stepi "ge"
 107 test_stepi "lt"
 108 test_stepi "le"
 109 test_stepi "eq"
 110 test_stepi "ne"
 111