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

   1 # Copyright 2005-2020 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
  17 if ![istarget "alpha*-*-*"] then {
  18     verbose "Skipping alpha step tests."
  19     return
  20 }
  21
  22 set testfile "alpha-step"
  23 set srcfile ${testfile}.c
  24 set binfile ${objdir}/${subdir}/${testfile}
  25
  26 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
  27     unsupported "failed to compile"
  28     return -1
  29 }
  30
  31 gdb_exit
  32 gdb_start
  33 gdb_reinitialize_dir $srcdir/$subdir
  34 gdb_load ${binfile}
  35
  36 proc test_stepi {function } {
  37     # Restart the program from scratch. If GDB got confused during one
  38     # of the previous tests, this makes sure that it doesn't affect
  39     # this series of tests.
  40     if ![runto_main] then {
  41         fail "can't run to main"
  42         return 0
  43     }
  44
  45     # Insert a breakpoint on the FP branch instruction inside FUNCTION.
  46     # Since the function has been hand written, we know this instruction
  47     # is a "fb$function" located at FUNCTION+4.
  48     gdb_test "break *$function+4" \
  49              "Breakpoint .* at .*" \
  50              "breakpoint on fb$function instruction"
  51
  52     gdb_test "continue" \
  53              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  54              "continue to fb$function instruction (first call)"
  55
  56     # Extra check to make sure we stopped on the FP branch instruction.
  57
  58     gdb_test "x /i \$pc" \
  59              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  60              "Check breakpoint on fb$function instruction (first call)"
  61
  62     # Step test, followed by the check that we landed on the expected
  63     # instruction (the testcase should be written in such a way that
  64     # the branch is taken on the first call to this function.
  65
  66     gdb_test "stepi" \
  67              "0x\[0-9a-fA-F\]+.*" \
  68              "stepi on fb$function (first call)"
  69
  70     gdb_test "x /i \$pc" \
  71              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret.*" \
  72              "Check stepi over fb$function stopped on ret"
  73
  74     # Continue again. FUNCTION should be called a second time, this time
  75     # with an argument such that the FP branch will not be taken.
  76
  77     gdb_test "continue" \
  78              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  79              "continue to fb$function instruction (second call)"
  80
  81     # Extra check to make sure we stopped on the FP branch instruction.
  82
  83     gdb_test "x /i \$pc" \
  84              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  85              "Check breakpoint on fb$function instruction (second call)"
  86
  87     # Step test, branch should not be taken.
  88
  89     gdb_test "stepi" \
  90              "0x\[0-9a-fA-F\]+.*" \
  91              "stepi on fb$function (branch not taken)"
  92
  93     # Extra check to verify that we landed on the instruction we expected.
  94
  95     gdb_test "x /i \$pc" \
  96              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg.*" \
  97              "check stepi over fb$function stopped on fneg instruction"
  98
  99 }
 100
 101 test_stepi "gt"
 102 test_stepi "ge"
 103 test_stepi "lt"
 104 test_stepi "le"
 105 test_stepi "eq"
 106 test_stepi "ne"
 107