Subversion Repositories openrisc_2011-10-31

# Copyright 2008, 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 .

set testfile "inline-cmds"

set srcfile "${testfile}.c"

set srcfile2 "inline-markers.c"

set fullsrcfile "${srcdir}/${subdir}/${srcfile}"

set fullsrcfile2 "${srcdir}/${subdir}/${srcfile2}"

set sources [list ${fullsrcfile} ${fullsrcfile2}]

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

if  { [gdb_compile $sources ${binfile} \

           executable {debug optimize=-O2}] != "" } {

    untested inline-cmds.exp

    return -1

}

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

gdb_test "set listsize 1" ""

runto_main

get_compiler_info $binfile

get_debug_format

if { [skip_inline_frame_tests] } {

    untested inline-cmds.exp

    return

}

# First, check that the things we expected to be inlined really were,

# and those that shouldn't be weren't.

set line1 [gdb_get_line_number "set breakpoint 1 here" ${srcfile2}]

gdb_breakpoint $srcfile2:$line1

set line2 [gdb_get_line_number "set breakpoint 2 here" ${srcfile2}]

gdb_breakpoint $srcfile2:$line2

gdb_test "continue" ".*set breakpoint 1 here.*" "continue to bar (1)"

gdb_test "backtrace" "#0  bar.*#1  .*func1.*#2  .*main.*" \

    "backtrace from bar (1)"

gdb_test "up" "#1  .*func1.*" "up from bar (1)"

gdb_test "info frame" ".*inlined into frame.*" "func1 inlined (1)"

gdb_test "continue" ".*set breakpoint 1 here.*" "continue to bar (2)"

gdb_test "backtrace" "#0  bar.*#1  .*func1.*#2  .*func2.*#3  .*main.*" \

    "backtrace from bar (2)"

gdb_test "up" "#1  .*func1.*" "up from bar (2)"

gdb_test "info frame" ".*inlined into frame.*" "func1 inlined (2)"

gdb_test "up" "#2  .*func2.*" "up from func1 (2)"

gdb_test "info frame" ".*inlined into frame.*" "func2 inlined (2)"

gdb_test "continue" ".*set breakpoint 2 here.*" "continue to marker"

gdb_test "backtrace" "#0  marker.*#1  .*main.*" "backtrace from marker"

gdb_test "info frame" ".*called by frame.*" "marker not inlined"

# Next, check that we can next over inlined functions.  We should not end up

# inside any of them.

delete_breakpoints

runto_main

# The lines before the first inlined call.

set first "x = 7|y = 8"

# Some extra lines that end up in our stepping due to code motion.

set opt "start of main|result = 0"

# We start this test with a "list" instead of a "next", in case the

# first non-prologue instruction in main comes from the inlined function.

set msg "next over inlined functions"

gdb_test_multiple "list" $msg {

    -re "($first|result = func1|result = func2|$opt).*$gdb_prompt $" {

        send_gdb "next\r"

        exp_continue

    }

    -re "marker \\\(\\\);\r\n$gdb_prompt $" {

        pass $msg

    }

}

# Check that when next shows the call of func1, it has not happened yet.

runto_main

# Like the return value of gdb_test: -1 something is wrong, 0 passed, 1 failed.

set bt_test -1

set x_test -1

set func1_step -1

set last_was_func1_call 0

set msg "next past inlined func1"

gdb_test_multiple "list" $msg {

    -re "($first|$opt).*$gdb_prompt $" {

        set last_was_func1_call 0

        send_gdb "next\r"

        exp_continue

    }

    -re "result = func1 \\\(\\\);\r\n$gdb_prompt $" {

        # Check whether x has been set.  If 0, we may be doing something

        # else associated with this line besides the inlined call - e.g.

        # loading the address of result.  If 7, we may be at the call site.

        # If 15, though, we might be past the call and back at the store to

        # result - that's OK, as long as we weren't just here (see

        # func1_step above).

        set x_val -1

        gdb_test_multiple "print x" "" {

            -re "\\\$$decimal = (\[0-9\]*)\r\n$gdb_prompt $" {

                set x_val $expect_out(1,string)

            }

            -re "$gdb_prompt $" { }

        }

        if { $x_val == 0 || $x_val == 7 } {

            if { $x_test != 1 } {

                set x_test 0

            }

        } elseif { $x_val == 15 } {

            if { $func1_step == -1 } {

                # We passed func1 without stopping at the call site.

                set x_test 1

            }

        } else {

            set x_test 1

        }

        # func1 should not show up on backtraces if we are at its call

        # site.

        if { $bt_test != 1 } {

            set bt_test [gdb_test "backtrace" "#0  \[^#]*main.*" ""]

        }

        # When we next over func1, we should not return to the same

        # line.  But we might go past the line, according to source

        # code order, and then come back.  A valid but odd layout is

        # body of func1, load result's address into a register using

        # the source location of "result = 0" several lines down, and

        # then return to this line for the store.  GCC 4.3 does that

        # on ARM.

        if { $last_was_func1_call } {

            set func1_step 1

        } elseif { $func1_step == -1 } {

            set func1_step 0

        }

        set last_was_func1_call 1

        send_gdb "next\r"

        exp_continue

    }

    -re "result = func2 \\\(\\\);\r\n$gdb_prompt $" {

        pass $msg

    }

}

if { $x_test == 0 } {

    pass "print x before func1"

} else {

    fail "print x before func1"

}

if { $bt_test == 0 } {

    pass "backtrace does not include func1"

} else {

    fail "backtrace does not include func1"

}

if { $bt_test == 0 } {

    pass "stepped over call to func1"

} else {

    fail "stepped over call to func1"

}

# Next, check that we can single step into inlined functions.  We should always

# "stop" at the call sites before entering them.

runto_main

set msg "step into func1"

set saw_call_site 0

gdb_test_multiple "list" $msg {

    -re "($first|$opt).*$gdb_prompt $" {

        send_gdb "step\r"

        exp_continue

    }

    -re "result = func1.*$gdb_prompt $" {

        set saw_call_site 1

        send_gdb "step\r"

        exp_continue

    }

    -re "func1 \\\(\\\) at .*\r\n$decimal.*bar \\\(\\\);\r\n$gdb_prompt $" {

        if { $saw_call_site } {

            pass $msg

        } else {

            fail $msg

        }

    }

}

# Check finish out of an inlined function.

set msg "finish from func1"

gdb_test_multiple "finish" $msg {

    -re "result = func1 \\\(\\\);\r\n$gdb_prompt $" {

        pass $msg

    }

    -re "($first|$opt).*$gdb_prompt $" {

        # Whoops.  We finished, but ended up back at an earlier line.  Keep

        # trying.

        send_gdb "step\r"

        exp_continue

    }

    -re "func1 \\\(\\\) at .*\r\n$decimal.*bar \\\(\\\);\r\n$gdb_prompt $" {

        send_gdb "finish\r"

        exp_continue

    }

}

# Test some corner cases involving consecutive inlined functions.

set line3 [gdb_get_line_number "set breakpoint 3 here"]

gdb_breakpoint $line3

gdb_continue_to_breakpoint "consecutive func1"

gdb_test "next" ".*func1 .*first call.*" "next to first func1"

set msg "next to second func1"

gdb_test_multiple "next" $msg {

    -re ".*func1 .*second call.*$gdb_prompt $" {

        pass $msg

    }

    -re ".*marker .*$gdb_prompt $" {

        # This assembles to two consecutive call instructions.

        # Both appear to be at the same line, because they're

        # in the body of the same inlined function.  This is

        # reasonable for the line table.  GDB should take the

        # containing block and/or function into account when

        # deciding how far to step.  The single line table entry

        # is actually two consecutive instances of the same line.

        kfail gdb/NNNN $msg

    }

}

# It is easier when the two inlined functions are not on the same line.

set line4 [gdb_get_line_number "set breakpoint 4 here"]

gdb_breakpoint $line4

gdb_continue_to_breakpoint "func1 then func3"

gdb_test "next" ".*func1 \\\(\\\);" "next to func1 before func3"

gdb_test "next" ".*func3 \\\(\\\);" "next to func3"

# Test finishing out of one thing and into another.

set line5 [gdb_get_line_number "set breakpoint 5 here"]

gdb_breakpoint $line5

gdb_continue_to_breakpoint "finish into func1"

gdb_test "next" ".*marker \\\(\\\);" "next to finish marker"

gdb_test "step" ".*set breakpoint 2 here.*" "step into finish marker"

gdb_test "finish" "func1 \\\(\\\);" "finish from marker to func1"

gdb_test "step" "bar \\\(\\\);" "step into func1 for finish"

gdb_test "finish" "func3 \\\(\\\);" "finish from func1 to func3"

# Test a deeper call stack.

set line6 [gdb_get_line_number "set breakpoint 6 here"]

gdb_breakpoint $line6

gdb_continue_to_breakpoint "before the outer_inline call"

gdb_test "step" "marker \\\(\\\) at .*" "reach 1 the outer_inline call"

gdb_test "finish" "main \\\(\\\) at .*outer_inline2 \\\(\\\);" "reach outer_inline2"

gdb_test "bt" "#0  main.*" "backtrace at main of outer_inline"

gdb_test "step" "outer_inline2 \\\(\\\) at .*" "enter outer_inline2"

gdb_test "bt" "#0  outer_inline2.*#1  main.*" "backtrace at outer_inline2"

gdb_test "step" "outer_inline1 \\\(\\\) at .*" "enter outer_inline1 from outer_inline2"

set msg "backtrace at outer_inline1"

gdb_test_multiple "bt" $msg {

    -re "#0  outer_inline1.*#1  outer_inline2.*#2  main.*$gdb_prompt $" {

        pass $msg

    }

    -re "#0  $hex in outer_inline1.*#1  outer_inline2.*#2  main.*$gdb_prompt $" {

        # Binutils PR gas/6717.  Gas moves .loc past .p2align and the

        # leading nop of the inlined call appears to be on the same line

        # as main's call to marker.

        xfail $msg

        gdb_test "step" "noinline \\\(\\\);" "step to call of noinline"

    }

}

gdb_test "step" "noinline \\\(\\\) at .*" "enter noinline from outer_inline1"

gdb_test "bt" "#0  noinline.*#1  .*outer_inline1.*#2  .*outer_inline2.*#3  main.*" "backtrace at noinline from outer_inline1"

gdb_test "step" "inlined_fn \\\(\\\) at .*" "enter inlined_fn from noinline"

gdb_test "bt" "#0  inlined_fn.*#1  noinline.*#2  .*outer_inline1.*#3  .*outer_inline2.*#4  main.*" "backtrace at inlined_fn from noinline"

gdb_test "info frame" ".*inlined into frame.*" "inlined_fn from noinline inlined"

gdb_test "up" "#1  noinline.*" "up to noinline"

gdb_test "info frame" ".*\n called by frame.*" "noinline from outer_inline1 not inlined"

gdb_test "up" "#2  .*outer_inline1.*" "up to outer_inline1"

gdb_test "info frame" ".*inlined into frame.*" "outer_inline1 inlined"

gdb_test "up" "#3  .*outer_inline2.*" "up to outer_inline2"

gdb_test "info frame" ".*inlined into frame.*" "outer_inline2 inlined"

gdb_test "up" "#4  main.*" "up from outer_inline2"

gdb_test "info frame" ".*\n caller of frame.*" "main not inlined"