Subversion Repositories openrisc_2011-10-31

# Copyright 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see .

if $tracelevel {

    strace $tracelevel

}

if ![istarget "alpha*-*-*"] then {

    verbose "Skipping alpha step tests."

    return

}

set testfile "alpha-step"

set srcfile ${testfile}.c

set binfile ${objdir}/${subdir}/${testfile}

if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {

    unsupported "Testcase compile failed."

    return -1

}

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

proc test_stepi {function } {

    # Restart the program from scratch. If GDB got confused during one

    # of the previous tests, this makes sure that it doesn't affect

    # this series of tests.

    if ![runto_main] then {

        fail "Can't run to main"

        return 0

    }

    # Insert a breakpoint on the FP branch instruction inside FUNCTION.

    # Since the function has been hand written, we know this instruction

    # is a "fb$function" located at FUNCTION+4.

    gdb_test "break *$function+4" \

             "Breakpoint .* at .*" \

             "breakpoint on fb$function instruction"

    gdb_test "continue" \

             "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \

             "continue to fb$function instruction (first call)"

    # Extra check to make sure we stopped on the FP branch instruction.

    gdb_test "x /i \$pc" \

             "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \

             "Check breakpoint on fb$function instruction (first call)"

    # Step test, followed by the check that we landed on the expected

    # instruction (the testcase should be written in such a way that

    # the branch is taken on the first call to this function.

    gdb_test "stepi" \

             "0x\[0-9a-fA-F\]+.*" \

             "stepi on fb$function (first call)"

    gdb_test "x /i \$pc" \

             "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret.*" \

             "Check stepi over fb$function stopped on ret"

    # Continue again. FUNCTION should be called a second time, this time

    # with an argument such that the FP branch will not be taken.

    gdb_test "continue" \

             "Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \

             "continue to fb$function instruction (second call)"

    # Extra check to make sure we stopped on the FP branch instruction.

    gdb_test "x /i \$pc" \

             "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \

             "Check breakpoint on fb$function instruction (second call)"

    # Step test, branch should not be taken.

    gdb_test "stepi" \

             "0x\[0-9a-fA-F\]+.*" \

             "stepi on fb$function (branch not taken)"

    # Extra check to verify that we landed on the instruction we expected.

    gdb_test "x /i \$pc" \

             "0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg.*" \

             "Check stepi over fb$function stopped on fneg instruction"

}

test_stepi "gt"

test_stepi "ge"

test_stepi "lt"

test_stepi "le"

test_stepi "eq"

test_stepi "ne"