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

   1 # Copyright 2005-2024 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 require {istarget "alpha*-*-*"}
  18
  19 set testfile "alpha-step"
  20 set srcfile ${testfile}.c
  21 set binfile ${objdir}/${subdir}/${testfile}
  22
  23 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
  24     unsupported "failed to compile"
  25     return -1
  26 }
  27
  28 clean_restart $binfile
  29
  30 proc test_stepi {function } {
  31     # Restart the program from scratch. If GDB got confused during one
  32     # of the previous tests, this makes sure that it doesn't affect
  33     # this series of tests.
  34     if {![runto_main]} {
  35         return 0
  36     }
  37
  38     # Insert a breakpoint on the FP branch instruction inside FUNCTION.
  39     # Since the function has been hand written, we know this instruction
  40     # is a "fb$function" located at FUNCTION+4.
  41     gdb_test "break *$function+4" \
  42              "Breakpoint .* at .*" \
  43              "breakpoint on fb$function instruction"
  44
  45     gdb_test "continue" \
  46              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  47              "continue to fb$function instruction (first call)"
  48
  49     # Extra check to make sure we stopped on the FP branch instruction.
  50
  51     gdb_test "x /i \$pc" \
  52              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  53              "Check breakpoint on fb$function instruction (first call)"
  54
  55     # Step test, followed by the check that we landed on the expected
  56     # instruction (the testcase should be written in such a way that
  57     # the branch is taken on the first call to this function.
  58
  59     gdb_test "stepi" \
  60              "0x\[0-9a-fA-F\]+.*" \
  61              "stepi on fb$function (first call)"
  62
  63     gdb_test "x /i \$pc" \
  64              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret.*" \
  65              "Check stepi over fb$function stopped on ret"
  66
  67     # Continue again. FUNCTION should be called a second time, this time
  68     # with an argument such that the FP branch will not be taken.
  69
  70     gdb_test "continue" \
  71              "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
  72              "continue to fb$function instruction (second call)"
  73
  74     # Extra check to make sure we stopped on the FP branch instruction.
  75
  76     gdb_test "x /i \$pc" \
  77              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
  78              "Check breakpoint on fb$function instruction (second call)"
  79
  80     # Step test, branch should not be taken.
  81
  82     gdb_test "stepi" \
  83              "0x\[0-9a-fA-F\]+.*" \
  84              "stepi on fb$function (branch not taken)"
  85
  86     # Extra check to verify that we landed on the instruction we expected.
  87
  88     gdb_test "x /i \$pc" \
  89              "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg.*" \
  90              "check stepi over fb$function stopped on fneg instruction"
  91
  92 }
  93
  94 test_stepi "gt"
  95 test_stepi "ge"
  96 test_stepi "lt"
  97 test_stepi "le"
  98 test_stepi "eq"
  99 test_stepi "ne"
 100