gnu/dist/gdb6/gdb/testsuite/gdb.arch/alpha-step.exp

   1 # Copyright 2005 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  16
  17 if $tracelevel {
  18     strace $tracelevel
  19 }
  20
  21 set prms_id 0
  22 set bug_id 0
  23
  24 if ![istarget "alpha*-*-*"] then {
  25     verbose "Skipping alpha step tests."
  26     return
  27 }
  28
  29 set testfile "alpha-step"
  30 set srcfile ${testfile}.c
  31 set binfile ${objdir}/${subdir}/${testfile}
  32
  33 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
  34     unsupported "Testcase compile failed."
  35     return -1
  36 }
  37
  38 gdb_exit
  39 gdb_start
  40 gdb_reinitialize_dir $srcdir/$subdir
  41 gdb_load ${binfile}
  42
  43 proc test_stepi {function } {
  44     # Restart the program from scratch. If GDB got confused during one
  45     # of the previous tests, this makes sure that it doesn't affect
  46     # this series of tests.
  47     if ![runto_main] then {
  48         fail "Can't run to main"
  49         return 0
  50     }
  51
  52     # Insert a breakpoint on the FP branch instruction inside FUNCTION.
  53     # Since the function has been hand written, we know this instruction
  54     # is a "fb$function" located at FUNCTION+4.
  55     gdb_test "break *$function+4" \
  56              "Breakpoint .* at .*" \
  57              "breakpoint on fb$function instruction"
  58
  59     gdb_test "continue" \
  60              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  61              "continue to fb$function instruction (first call)"
  62
  63     # Extra check to make sure we stopped on the FP branch instruction.
  64
  65     gdb_test "x /i \$pc" \
  66              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function\[ \t\]+.*" \
  67              "Check breakpoint on fb$function instruction (first call)"
  68
  69     # Step test, followed by the check that we landed on the expected
  70     # instruction (the testcase should be written in such a way that
  71     # the branch is taken on the first call to this function.
  72
  73     gdb_test "stepi" \
  74              "0x\[0-9a-fA-F\]+.*" \
  75              "stepi on fb$function (first call)"
  76
  77     gdb_test "x /i \$pc" \
  78              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret\[ \t\]+.*" \
  79              "Check stepi over fb$function stopped on ret"
  80
  81     # Continue again. FUNCTION should be called a second time, this time
  82     # with an argument such that the FP branch will not be taken.
  83
  84     gdb_test "continue" \
  85              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  86              "continue to fb$function instruction (second call)"
  87
  88     # Extra check to make sure we stopped on the FP branch instruction.
  89
  90     gdb_test "x /i \$pc" \
  91              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function\[ \t\]+.*" \
  92              "Check breakpoint on fb$function instruction (second call)"
  93
  94     # Step test, branch should not be taken.
  95
  96     gdb_test "stepi" \
  97              "0x\[0-9a-fA-F\]+.*" \
  98              "stepi on fb$function (branch not taken)"
  99
 100     # Extra check to verify that we landed on the instruction we expected.
 101
 102     gdb_test "x /i \$pc" \
 103              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg\[ \t\]+.*" \
 104              "Check stepi over fb$function stopped on fneg instruction"
 105
 106 }
 107
 108 test_stepi "gt"
 109 test_stepi "ge"
 110 test_stepi "lt"
 111 test_stepi "le"
 112 test_stepi "eq"
 113 test_stepi "ne"
 114