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# Copyright 2009-2025 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.
require is_x86_like_target
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"
# This can take awhile.
set oldtimeout $timeout
set timeout [expr $oldtimeout + 120]
gdb_test "until $location" ".*$srcfile:$location.*" \
"record to end of main"
set timeout $oldtimeout
# 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 env particularly ftag and fstatus reigters.
set location [gdb_get_line_number "TEST ENV"]
gdb_test "until $location" ".*$srcfile:$location.*asm.*nop.*" \
"begin testing fpu env"
gdb_test "n" "asm.*fsave.*" "save FPU env in memory"
gdb_test "n" "asm.*frstor.*" "restore FPU env"
gdb_test "n" "asm.*fstsw.*" "store status word in EAX"
gdb_test "n" "asm.*fld1.*" "push st0"
gdb_test "info register ax" "ax *0x0.*\[ \t\]+.*" "verify eax == 0x0"
gdb_test "info register fstat" "fstat *0.*\[ \t\]+.*" "verify fstat == 0"
gdb_test "info register ftag" "ftag *0xffff.*\[ \t\]+.*" "verify ftag == 0xffff"
gdb_test "stepi" "asm.*fldl2t.*" "step to fldl2t"
gdb_test "info register fstat" "fstat *0x3800.*\[ \t\]+.*" "verify fstat == 0x3800"
gdb_test "info register ftag" "ftag *0x3fff.*\[ \t\]+.*" "verify ftag == 0x3fff"
gdb_test "stepi" "asm.*fldl2e.*" "step to fldl2e"
gdb_test "info register fstat" "fstat *0x3000.*\[ \t\]+.*" "verify fstat == 0x3000"
gdb_test "info register ftag" "ftag *0xfff.*\[ \t\]+.*" "verify ftag == 0xfff"
gdb_test "stepi" "asm.*fldpi.*" "step to fldpi"
gdb_test "info register fstat" "fstat *0x2800.*\[ \t\]+.*" "verify fstat == 0x2800"
gdb_test "info register ftag" "ftag *0x3ff.*\[ \t\]+.*" "verify ftag == 0x3ff"
gdb_test "stepi" "asm.*fldlg2.*" "step to fldlg2"
gdb_test "info register fstat" "fstat *0x2000.*\[ \t\]+.*" "verify fstat == 0x2000"
gdb_test "info register ftag" "ftag *0xff.*\[ \t\]+.*" "verify ftag == 0xff"
gdb_test "stepi" "asm.*fldln2.*" "step to fldln2"
gdb_test "info register fstat" "fstat *0x1800.*\[ \t\]+.*" "verify fstat == 0x1800"
gdb_test "info register ftag" "ftag *0x3f.*\[ \t\]+.*" "verify ftag == 0x3f"
gdb_test "stepi" "asm.*fldz.*" "step to fldz"
gdb_test "info register fstat" "fstat *0x1000.*\[ \t\]+.*" "verify fstat == 0x1000"
gdb_test "info register ftag" "ftag *0xf.*\[ \t\]+.*" "verify ftag == 0xf"
gdb_test "stepi" "asm.*nop.*" "step to nop"
gdb_test "info register fstat" "fstat *0x800.*\[ \t\]+.*" "verify fstat == 0x800"
gdb_test "info register ftag" "ftag *0x7.*\[ \t\]+.*" "verify ftag == 0x7"
}
# Move backward and check we get the same registers back.
with_test_prefix "backward" {
gdb_test "reverse-stepi" "asm.*fldz.*" "step to fldz"
gdb_test "info register fstat" "fstat *0x1000.*\[ \t\]+.*" "verify fstat == 0x1000"
gdb_test "info register ftag" "ftag *0xf.*\[ \t\]+.*" "verify ftag == 0xf"
gdb_test "reverse-stepi" "asm.*fldln2.*" "step to fldln2"
gdb_test "info register fstat" "fstat *0x1800.*\[ \t\]+.*" "verify fstat == 0x1800"
gdb_test "info register ftag" "ftag *0x3f.*\[ \t\]+.*" "verify ftag == 0x3f"
gdb_test "reverse-stepi" "asm.*fldlg2.*" "step to fldlg2"
gdb_test "info register fstat" "fstat *0x2000.*\[ \t\]+.*" "verify fstat == 0x2000"
gdb_test "info register ftag" "ftag *0xff.*\[ \t\]+.*" "verify ftag == 0xff"
gdb_test "reverse-stepi" "asm.*fldpi.*" "step to fldpi"
gdb_test "info register fstat" "fstat *0x2800.*\[ \t\]+.*" "verify fstat == 0x2800"
gdb_test "info register ftag" "ftag *0x3ff.*\[ \t\]+.*" "verify ftag == 0x3ff"
gdb_test "reverse-stepi" "asm.*fldl2e.*" "step tp fldl2d"
gdb_test "info register fstat" "fstat *0x3000.*\[ \t\]+.*" "verify fstat == 0x3000"
gdb_test "info register ftag" "ftag *0xfff.*\[ \t\]+.*" "verify ftag == 0xfff"
gdb_test "reverse-stepi" "asm.*fldl2t.*" "step to fldl2t"
gdb_test "info register fstat" "fstat *0x3800.*\[ \t\]+.*" "verify fstat == 0x3800"
gdb_test "info register ftag" "ftag *0x3fff.*\[ \t\]+.*" "verify ftag == 0x3fff"
gdb_test "reverse-stepi" "asm.*fld1.*" "step to fld1"
gdb_test "info register fstat" "fstat *0.*\[ \t\]+.*" "verify fstat == 0"
gdb_test "info register ftag" "ftag *0xffff.*\[ \t\]+.*" "verify ftag == 0xffff"
}
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