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

   1 # Copyright 2005, 2007, 2008 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 set prms_id 0
  21 set bug_id 0
  22
  23 if ![istarget "alpha*-*-*"] then {
  24     verbose "Skipping alpha step tests."
  25     return
  26 }
  27
  28 set testfile "alpha-step"
  29 set srcfile ${testfile}.c
  30 set binfile ${objdir}/${subdir}/${testfile}
  31
  32 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
  33     unsupported "Testcase compile failed."
  34     return -1
  35 }
  36
  37 gdb_exit
  38 gdb_start
  39 gdb_reinitialize_dir $srcdir/$subdir
  40 gdb_load ${binfile}
  41
  42 proc test_stepi {function } {
  43     # Restart the program from scratch. If GDB got confused during one
  44     # of the previous tests, this makes sure that it doesn't affect
  45     # this series of tests.
  46     if ![runto_main] then {
  47         fail "Can't run to main"
  48         return 0
  49     }
  50
  51     # Insert a breakpoint on the FP branch instruction inside FUNCTION.
  52     # Since the function has been hand written, we know this instruction
  53     # is a "fb$function" located at FUNCTION+4.
  54     gdb_test "break *$function+4" \
  55              "Breakpoint .* at .*" \
  56              "breakpoint on fb$function instruction"
  57
  58     gdb_test "continue" \
  59              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  60              "continue to fb$function instruction (first call)"
  61
  62     # Extra check to make sure we stopped on the FP branch instruction.
  63
  64     gdb_test "x /i \$pc" \
  65              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  66              "Check breakpoint on fb$function instruction (first call)"
  67
  68     # Step test, followed by the check that we landed on the expected
  69     # instruction (the testcase should be written in such a way that
  70     # the branch is taken on the first call to this function.
  71
  72     gdb_test "stepi" \
  73              "0x\[0-9a-fA-F\]+.*" \
  74              "stepi on fb$function (first call)"
  75
  76     gdb_test "x /i \$pc" \
  77              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret.*" \
  78              "Check stepi over fb$function stopped on ret"
  79
  80     # Continue again. FUNCTION should be called a second time, this time
  81     # with an argument such that the FP branch will not be taken.
  82
  83     gdb_test "continue" \
  84              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  85              "continue to fb$function instruction (second call)"
  86
  87     # Extra check to make sure we stopped on the FP branch instruction.
  88
  89     gdb_test "x /i \$pc" \
  90              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  91              "Check breakpoint on fb$function instruction (second call)"
  92
  93     # Step test, branch should not be taken.
  94
  95     gdb_test "stepi" \
  96              "0x\[0-9a-fA-F\]+.*" \
  97              "stepi on fb$function (branch not taken)"
  98
  99     # Extra check to verify that we landed on the instruction we expected.
 100
 101     gdb_test "x /i \$pc" \
 102              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg.*" \
 103              "Check stepi over fb$function stopped on fneg instruction"
 104
 105 }
 106
 107 test_stepi "gt"
 108 test_stepi "ge"
 109 test_stepi "lt"
 110 test_stepi "le"
 111 test_stepi "eq"
 112 test_stepi "ne"
 113