# Copyright 2009-2022 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.


if {![is_x86_like_target]} {
    verbose "Skipping i387 reverse float tests."
    return
}

standard_testfile

# some targets have leading underscores on assembly symbols.
set additional_flags [gdb_target_symbol_prefix_flags]

if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
	 [list debug $additional_flags]]} {
    return -1
}

runto_main

# Record to end of main

set location [gdb_get_line_number "END I387-FLOAT-REVERSE"]
gdb_test_no_output "record" "turn on process record"
gdb_test "until $location" ".*$srcfile:$location.*" \
    "record to end of main"

# Now rewind to beginning so we can begin testing.

set location [gdb_get_line_number "BEGIN I387-FLOAT-REVERSE"]
gdb_test_no_output "set exec-dir reverse" "set reverse direction"
gdb_test "until $location" ".*$srcfile:$location.*" \
    "rewind to beginning of main"
gdb_test_no_output "set exec-dir forward" "set forward direction"

with_test_prefix "forward" {
    # Test FPU stack. FPU stack includes st0, st1, st2, st3, st4,
    # st5, st6, st7. We push 8 values to FPU stack in record mode
    # and see whether all are getting recorded.

    set location [gdb_get_line_number "test st0 register"]
    gdb_test "until $location" ".*$srcfile:$location.*asm.*fld1.*" \
	"begin test st0"
    gdb_test "stepi" "asm.*fldl2t.*"              "push st0 == 1"
    gdb_test "info register st0" "st0 *1\[ \t\]+.*"     "verify st0 == 1"

    gdb_test "stepi" "asm.*fldl2e.*"              "push st0 == 3.3219280948*"
    gdb_test "info register st0" "st0 *3.32192.*\[ \t\]+.*" "verify st0 == 3.321928094*"
    gdb_test "info register st1" "st1 *1\[ \t\]+.*"       "verify st1 == 1"

    gdb_test "stepi" "asm.*fldpi.*"                   "push st0 == 1.4426950406*"
    gdb_test "info register st0" "st0 *1.44269.*\[ \t\]+.*" "verify st0 == 1.442695040*"
    gdb_test "info register st1" "st1 *3.32192.*\[ \t\]+.*" "verify st1 == 3.3219280948*"
    gdb_test "info register st2" "st2 *1\[ \t\]+.*"         "verify st2 == 1"

    gdb_test "stepi" "asm.*fldlg2.*"                  "push st0 == 3.14159265*"
    gdb_test "info register st0" "st0 *3.14159.*\[ \t\]+.*" "verify st0 == 3.14159265*"
    gdb_test "info register st1" "st1 *1.44269.*\[ \t\]+.*" "verify st1 == 1.4426950*"
    gdb_test "info register st2" "st2 *3.32192.*\[ \t\]+.*" "verify st2 == 3.3219280*"
    gdb_test "info register st3" "st3 *1\[ \t\]+.*"          "verify st3 == 1"

    gdb_test "stepi" "asm.*fldln2.*"                  "push st0 == 0.301029*"
    gdb_test "info register st0" "st0 *0.30102.*\[ \t\]+.*" "verify st0 == 0.301029*"
    gdb_test "info register st1" "st1 *3.14159.*\[ \t\]+.*" "verify st1 == 3.14159265*"
    gdb_test "info register st2" "st2 *1.44269.*\[ \t\]+.*" "verify st2 == 1.44269506*"
    gdb_test "info register st3" "st3 *3.32192.*\[ \t\]+.*" "verify st3 == 3.3219280948*"
    gdb_test "info register st4" "st4 *1\[ \t\]+.*"         "verify st4 == 1"

    gdb_test "stepi" "asm.*fldz.*"                    "push st0 == 0.69314*"
    gdb_test "info register st0" "st0 *0.69314.*\[ \t\]+.*" "verify st0 == 0.69314*"
    gdb_test "info register st1" "st1 *0.30102.*\[ \t\]+.*" "verify st1 == 0.301029*"
    gdb_test "info register st2" "st2 *3.14159.*\[ \t\]+.*" "verify st2 == 3.14159265*"
    gdb_test "info register st3" "st3 *1.44269.*\[ \t\]+.*" "verify st3 == 1.442695040*"
    gdb_test "info register st4" "st4 *3.32192.*\[ \t\]+.*" "verify st4 == 3.3219280948*"
    gdb_test "info register st5" "st5 *1\[ \t\]+.*"         "verify st5 == 1"

    gdb_test "stepi" "asm.*fld1.*"                    "push st0 == 0"
    gdb_test "info register st0" "st0 *0\[ \t\]+.*"         "verify st0 == 0"
    gdb_test "info register st1" "st1 *0.69314.*\[ \t\]+.*" "verify st1 == 0.69314*"
    gdb_test "info register st2" "st2 *0.30102.*\[ \t\]+.*" "verify st2 == 0.301029*"
    gdb_test "info register st3" "st3 *3.14159.*\[ \t\]+.*" "verify st3 == 3.14159265*"
    gdb_test "info register st4" "st4 *1.44269.*\[ \t\]+.*" "verify st4 == 1.442695040*"
    gdb_test "info register st5" "st5 *3.32192.*\[ \t\]+.*" "verify st5 == 3.32192809*"
    gdb_test "info register st6" "st6 *1\[ \t\]+.*"         "verify st6 == 1"

    gdb_test "stepi" "asm.*nop.*"                     "push st0 == 1, again"
    gdb_test "info register st0" "st0 *1\[ \t\]+.*"         "verify st0 == 1, again"
    gdb_test "info register st1" "st1 *0\[ \t\]+.*"         "verify st1 == 0"
    gdb_test "info register st2" "st2 *0.69314.*\[ \t\]+.*" "verify st2 == 0.69314*"
    gdb_test "info register st3" "st3 *0.30102.*\[ \t\]+.*" "verify st3 == 0.301029*"
    gdb_test "info register st4" "st4 *3.14159.*\[ \t\]+.*" "verify st4 == 3.14159265*"
    gdb_test "info register st5" "st5 *1.44269.*\[ \t\]+.*" "verify st5 == 1.44269504*"
    gdb_test "info register st6" "st6 *3.32192.*\[ \t\]+.*" "verify st6 == 3.3219280948*"
    gdb_test "info register st7" "st7 *1.*"           "verify st7 == 1"
}

with_test_prefix "backward" {
    # Now step backward, and check that st0 value reverts to zero.
    gdb_test "reverse-stepi" "asm.*fld1.*"            "undo registers, st0-st7"
    gdb_test "info register st0" "st0 *0\[ \t\]+.*"         "verify st0 == 0"
    gdb_test "info register st1" "st1 *0.69314.*\[ \t\]+.*" "verify st1 == 0.69314*"
    gdb_test "info register st2" "st2 *0.30102.*\[ \t\]+.*" "verify st2 == 0.301029*"
    gdb_test "info register st3" "st3 *3.14159.*\[ \t\]+.*" "verify st3 == 3.14159265*"
    gdb_test "info register st4" "st4 *1.44269.*\[ \t\]+.*" "verify st4 == 1.442695040*"
    gdb_test "info register st5" "st5 *3.32192.*\[ \t\]+.*" "verify st5 == 3.3219280948*"
    gdb_test "info register st6" "st6 *1\[ \t\]+.*"         "verify st6 == 1"

    gdb_test "reverse-stepi" "asm.*fldz.*"            "push st0 == 0.69314*"
    gdb_test "info register st0" "st0 *0.69314.*\[ \t\]+.*" "verify st0 == 0.69314*"
    gdb_test "info register st1" "st1 *0.30102.*\[ \t\]+.*" "verify st1 == 0.301029*"
    gdb_test "info register st2" "st2 *3.14159.*\[ \t\]+.*" "verify st2 == 3.14159265*"
    gdb_test "info register st3" "st3 *1.44269.*\[ \t\]+.*" "verify st3 == 1.442695040*"
    gdb_test "info register st4" "st4 *3.32192.*\[ \t\]+.*" "verify st4 == 3.3219280948*"
    gdb_test "info register st5" "st5 *1\[ \t\]+.*"       "verify st5 == 1"

    gdb_test "reverse-stepi" "asm.*fldln2.*"          "push st0 == 0.301029*"
    gdb_test "info register st0" "st0 *0.30102.*\[ \t\]+.*" "verify st0 == 0.301029*"
    gdb_test "info register st1" "st1 *3.14159.*\[ \t\]+.*" "verify st1 == 3.14159265*"
    gdb_test "info register st2" "st2 *1.44269.*\[ \t\]+.*" "verify st2 == 1.442695040*"
    gdb_test "info register st3" "st3 *3.32192.*\[ \t\]+.*" "verify st3 == 3.3219280948*"
    gdb_test "info register st4" "st4 *1\[ \t\]+.*"         "verify st4 == 1"

    gdb_test "reverse-stepi" "asm.*fldlg2.*"          "push st0 == 3.14159265*"
    gdb_test "info register st0" "st0 *3.14159.*\[ \t\]+.*" "verify st0 == 3.14159265*"
    gdb_test "info register st1" "st1 *1.44269.*\[ \t\]+.*" "verify st1 == 1.442695040*"
    gdb_test "info register st2" "st2 *3.32192.*\[ \t\]+.*" "verify st2 == 3.3219280948*"
    gdb_test "info register st3" "st3 *1\[ \t\]+.*"       "verify st3 == 1"

    gdb_test "reverse-stepi" "asm.*fldpi.*"           "push st0 == 1.44269504088*"
    gdb_test "info register st0" "st0 *1.44269.*\[ \t\]+.*" "verify st0 == 1.442695040*"
    gdb_test "info register st1" "st1 *3.32192.*\[ \t\]+.*" "verify st1 == 3.3219280948*"
    gdb_test "info register st2" "st2 *1\[ \t\]+.*"         "verify st2 == 1"

    gdb_test "reverse-stepi" "asm.*fldl2e.*"          "push st0 == 3.3219280948*"
    gdb_test "info register st0" "st0 *3.32192.*\[ \t\]+.*" "verify st0 == 3.3219280948*"
    gdb_test "info register st1" "st1 *1\[ \t\]+.*"         "verify st1 == 1"

    gdb_test "reverse-stepi" "asm.*fldl2t.*"      "push st0 == 1"
    gdb_test "info register st0" "st0 *1\[ \t\]+.*"     "verify st0 == 1"
}