# Copyright (C) 2008-2020 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 <http://www.gnu.org/licenses/>.

# This file is part of the GDB testsuite.
# It tests <gdb:value> math operations.

load_lib gdb-guile.exp

standard_testfile

proc test_value_numeric_ops {} {
    global gdb_prompt

    gdb_scm_test_silent_cmd "gu (define i (make-value 5))" \
	"create first integer value"
    gdb_scm_test_silent_cmd "gu (define j (make-value 2))" \
	"create second integer value"
    gdb_test "gu (print (value-add i j))" \
	"= 7" "add two integer values"
    gdb_test "gu (raw-print (value-add i j))" \
	"= #<gdb:value 7>" "verify type of integer add result"

    gdb_scm_test_silent_cmd "gu (define f (make-value  1.25))" \
	"create first double value"
    gdb_scm_test_silent_cmd "gu (define g (make-value 2.5))" \
	"create second double value"
    gdb_test "gu (print (value-add f g))" \
	"= 3.75" "add two double values"
    gdb_test "gu (raw-print (value-add f g))" \
	"= #<gdb:value 3.75>" "verify type of double add result"

    gdb_test "gu (print (value-sub i j))" \
	"= 3" "subtract two integer values"
    gdb_test "gu (print (value-sub f g))" \
	"= -1.25" "subtract two double values"

    gdb_test "gu (print (value-mul i j))" \
	"= 10" "multiply two integer values"
    gdb_test "gu (print (value-mul f g))" \
	"= 3.125" "multiply two double values"

    gdb_test "gu (print (value-div i j))" \
	"= 2" "divide two integer values"
    gdb_test "gu (print (value-div f g))" \
	"= 0.5" "divide two double values"
    gdb_test "gu (print (value-rem i j))" \
	"= 1" "take remainder of two integer values"
    gdb_test "gu (print (value-mod i j))" \
	"= 1" "take modulus of two integer values"

    gdb_test "gu (print (value-pow i j))" \
	"= 25" "integer value raised to the power of another integer value"
    gdb_test "gu (print (value-pow g j))" \
	"= 6.25" "double value raised to the power of integer value"

    gdb_test "gu (print (value-neg i))" \
	"= -5" "negated integer value"
    gdb_test "gu (print (value-pos i))" \
	"= 5" "positive integer value"
    gdb_test "gu (print (value-neg f))" \
	"= -1.25" "negated double value"
    gdb_test "gu (print (value-pos f))" \
	"= 1.25" "positive double value"
    gdb_test "gu (print (value-abs (value-sub j i)))" \
	"= 3" "absolute of integer value"
    gdb_test "gu (print (value-abs (value-sub f g)))" \
	"= 1.25" "absolute of double value"

    gdb_test "gu (print (value-lsh i j))" \
	"= 20" "left shift"
    gdb_test "gu (print (value-rsh i j))" \
	"= 1" "right shift"

    gdb_test "gu (print (value-min i j))" \
	"= 2" "min"
    gdb_test "gu (print (value-max i j))" \
	"= 5" "max"

    gdb_test "gu (print (value-lognot i))" \
	"= -6" "lognot"
    gdb_test "gu (print (value-logand i j))" \
	"= 0" "logand i j"
    gdb_test "gu (print (value-logand 5 1))" \
	"= 1" "logand 5 1"
    gdb_test "gu (print (value-logior i j))" \
	"= 7" "logior i j"
    gdb_test "gu (print (value-logior 5 1))" \
	"= 5" "logior 5 1"
    gdb_test "gu (print (value-logxor i j))" \
	"= 7" "logxor i j"
    gdb_test "gu (print (value-logxor 5 1))" \
	"= 4" "logxor 5 1"

    # Test <gdb:value> mixed with Guile types.

    gdb_test "gu (print (value-sub i 1))" \
	"= 4" "subtract integer value from guile integer"
    gdb_test "gu (raw-print (value-sub i 1))" \
	"#<gdb:value 4>" \
	"verify type of mixed integer subtraction result"
    gdb_test "gu (print (value-add f 1.5))" \
	"= 2.75" "add double value with guile float"

    gdb_test "gu (print (value-sub 1 i))" \
	"= -4" "subtract guile integer from integer value"
    gdb_test "gu (print (value-add 1.5 f))" \
	"= 2.75" "add guile float with double value"

    # Enum conversion test.
    gdb_test "print evalue" "= TWO"
    gdb_test "gu (print (value->integer (history-ref 0)))" "= 2"

    # Test pointer arithmetic.

    # First, obtain the pointers.
    gdb_test "print (void *) 2" ".*" ""
    gdb_test_no_output "gu (define a (history-ref 0))"
    gdb_test "print (void *) 5" ".*" ""
    gdb_test_no_output "gu (define b (history-ref 0))"

    gdb_test "gu (print (value-add a 5))" \
	"= 0x7( <.*>)?" "add pointer value with guile integer"
    gdb_test "gu (print (value-sub b 2))" \
	"= 0x3( <.*>)?" "subtract guile integer from pointer value"
    gdb_test "gu (print (value-sub b a))" \
	"= 3" "subtract two pointer values"

    # Test some invalid operations.

    gdb_test_multiple "gu (print (value-add i '()))" "catch error in guile type conversion" {
	-re "Wrong type argument in position 2.*$gdb_prompt $" {pass "catch error in guile type conversion"}
	-re "= .*$gdb_prompt $"  {fail "catch error in guile type conversion"}
	-re "$gdb_prompt $"      {fail "catch error in guile type conversion"}
    }

    gdb_test_multiple "gu (print (value-add i \"foo\"))" "catch throw of GDB error" {
	-re "Argument to arithmetic operation not a number or boolean.*$gdb_prompt $" {pass "catch throw of GDB error"}
	-re "= .*$gdb_prompt $"         {fail "catch throw of GDB error"}
	-re "$gdb_prompt $"             {fail "catch throw of GDB error"}
    }
}

# Return the max signed int of size SIZE.
# TCL 8.5 required here.  Use lookup table instead?

proc get_max_int { size } {
    return [expr "(1 << ($size - 1)) - 1"]
}

# Return the min signed int of size SIZE.
# TCL 8.5 required here.  Use lookup table instead?

proc get_min_int { size } {
    return [expr "-(1 << ($size - 1))"]
}

# Return the max unsigned int of size SIZE.
# TCL 8.5 required here.  Use lookup table instead?

proc get_max_uint { size } {
    return [expr "(1 << $size) - 1"]
}

# Helper routine for test_value_numeric_ranges.

proc test_make_int_value { name size } {
    set max [get_max_int $size]
    set min [get_min_int $size]
    set umax [get_max_uint $size]
    gdb_test "gu (print (value-type (make-value $max)))" \
	"= $name" "test make-value $name $size max"
    gdb_test "gu (print (value-type (make-value $min)))" \
	"= $name" "test make-value $name $size min"
    gdb_test "gu (print (value-type (make-value $umax)))" \
	"= unsigned $name" "test make-value unsigned $name $size umax"
}

# Helper routine for test_value_numeric_ranges.

proc test_make_typed_int_value { size } {
    set name "int$size"
    set uname "uint$size"
    set max [get_max_int $size]
    set min [get_min_int $size]
    set umax [get_max_uint $size]

    gdb_test "gu (print (make-value $max #:type (arch-${name}-type arch)))" \
	"= $max" "test make-value $name $size max"
    gdb_test "gu (print (make-value $min #:type (arch-${name}-type arch)))" \
	"= $min" "test make-value $name $size min"
    gdb_test "gu (print (make-value $umax #:type (arch-${uname}-type arch)))" \
	"= $umax" "test make-value $uname $size umax"

    gdb_test "gu (print (make-value (+ $max 1) #:type (arch-${name}-type arch)))" \
	"ERROR.*Out of range.*" "test make-value $name $size max+1"
    gdb_test "gu (print (make-value (- $min 1) #:type (arch-${name}-type arch)))" \
	"ERROR.*Out of range.*" "test make-value $name $size min-1"
    gdb_test "gu (print (make-value (+ $umax 1) #:type (arch-${uname}-type arch)))" \
	"ERROR.*Out of range.*" "test make-value $uname $size umax+1"
}

proc test_value_numeric_ranges {} {
    # We can't assume anything about sizeof (int), etc. on the target.
    # Keep it simple for now, this will cover everything important for
    # the major targets.
    set int_size [get_sizeof "int" 0]
    set long_size [get_sizeof "long" 0]
    gdb_test_no_output "gu (define arch (current-arch))"

    if { $int_size == 4 } {
	test_make_int_value int 32
    }
    if { $long_size == 8} {
	test_make_int_value long 64
    }
    gdb_test "gu (print (value-type (make-value (ash 1 64))))" \
	"ERROR:.*value not a number representable.*" \
	"test make-value, number too large"

    foreach size { 8 16 32 } {
	test_make_typed_int_value $size
    }
    if { $long_size == 8 } {
	test_make_typed_int_value 64
    }
}

proc test_value_boolean {} {
    # Note: Boolean values print as 0,1 because they are printed in the
    # current language (in this case C).

    gdb_test "gu (print (make-value #t))" "= 1" "create boolean true"
    gdb_test "gu (print (make-value #f))" "= 0" "create boolean false"

    gdb_test "gu (print (value-not (make-value #t)))" \
	"= 0" "not true"
    gdb_test "gu (print (value-not (make-value #f)))" \
	"= 1" "not false"

    gdb_test "gu (raw-print (make-value #t))" \
	"#<gdb:value 1>" "verify type of boolean"
}

proc test_value_compare {} {
    gdb_test "gu (print (value<? 1 1))" \
	"#f" "less than, equal"
    gdb_test "gu (print (value<? 1 2))" \
	"#t" "less than, less"
    gdb_test "gu (print (value<? 2 1))" \
	"#f" "less than, greater"

    gdb_test "gu (print (value<=? 1 1))" \
	"#t" "less or equal, equal"
    gdb_test "gu (print (value<=? 1 2))" \
	"#t" "less or equal, less"
    gdb_test "gu (print (value<=? 2 1))" \
	"#f" "less or equal, greater"

    gdb_test "gu (print (value=? 1 1))" \
	"#t" "equality"
    gdb_test "gu (print (value=? 1 2))" \
	"#f" "inequality"
    gdb_test "gu (print (value=? (make-value 1) 1.0))" \
	"#t" "equality of gdb:value with Guile value"
    gdb_test "gu (print (value=? (make-value 1) 2))" \
	"#f" "inequality of gdb:value with Guile value"

    gdb_test "gu (print (value>? 1 1))" \
	"#f" "greater than, equal"
    gdb_test "gu (print (value>? 1 2))" \
	"#f" "greater than, less"
    gdb_test "gu (print (value>? 2 1))" \
	"#t" "greater than, greater"

    gdb_test "gu (print (value>=? 1 1))" \
	"#t" "greater or equal, equal"
    gdb_test "gu (print (value>=? 1 2))" \
	"#f" "greater or equal, less"
    gdb_test "gu (print (value>=? 2 1))" \
	"#t" "greater or equal, greater"
}

if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c}]} {
    return
}

# Skip all tests if Guile scripting is not enabled.
if { [skip_guile_tests] } { continue }

if ![gdb_guile_runto_main] {
   return
}

test_value_numeric_ops
test_value_numeric_ranges
test_value_boolean
test_value_compare