1# Copyright 2009-2020 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# This file is part of the gdb testsuite.
17
18
19if ![istarget "i?86-*linux*"] then {
20    verbose "Skipping i387 reverse float tests."
21    return
22}
23
24standard_testfile
25
26# some targets have leading underscores on assembly symbols.
27set additional_flags [gdb_target_symbol_prefix_flags]
28
29if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
30	 [list debug $additional_flags]]} {
31    return -1
32}
33
34runto main
35
36# Record to end of main
37
38set location [gdb_get_line_number "END I387-FLOAT-REVERSE"]
39gdb_test_no_output "record"  "Turn on process record"
40# This can take awhile.
41set oldtimeout $timeout
42set timeout [expr $oldtimeout + 120]
43gdb_test "until $location" ".*$srcfile:$location.*" \
44    "record to end of main"
45set timeout $oldtimeout
46
47# Now rewind to beginning so we can begin testing.
48
49set location [gdb_get_line_number "BEGIN I387-FLOAT-REVERSE"]
50gdb_test_no_output "set exec-dir reverse" "set reverse direction"
51gdb_test "until $location" ".*$srcfile:$location.*" \
52    "rewind to beginning of main"
53gdb_test_no_output "set exec-dir forward" "set forward direction"
54
55# Test FPU env particularly ftag and fstatus reigters.
56
57set location [gdb_get_line_number "TEST ENV"]
58gdb_test "until $location" ".*$srcfile:$location.*asm.*nop.*" \
59    "begin testing fpu env"
60
61gdb_test "n" "asm.*fsave.*"               "save FPU env in memory"
62gdb_test "n" "asm.*frstor.*"              "restore FPU env"
63gdb_test "n" "asm.*fstsw.*"               "store status word in EAX"
64gdb_test "n" "asm.*fld1.*"                "push st0"
65
66gdb_test "info register eax" "eax *0x8040000.*\[ \t\]+.*"  "verify eax == 0x8040000"
67gdb_test "info register fstat" "fstat *0.*\[ \t\]+.*"      "verify fstat == 0"
68gdb_test "info register ftag" "ftag *0xffff.*\[ \t\]+.*"   "verify ftag == 0xffff"
69
70gdb_test "stepi" "asm.*fldl2t.*"                      "push st0"
71gdb_test "info register fstat" "fstat *0x3800.*\[ \t\]+.*"  "verify fstat == 0x3800"
72gdb_test "info register ftag" "ftag *0x3fff.*\[ \t\]+.*"    "verify ftag  == 0x3fff"
73
74gdb_test "stepi" "asm.*fldl2e.*"                  "push st0"
75gdb_test "info register fstat" "fstat *0x3000.*\[ \t\]+.*"  "verify fstat == 0x3000"
76gdb_test "info register ftag" "ftag *0xfff.*\[ \t\]+.*"     "verify ftag  == 0xfff"
77
78gdb_test "stepi" "asm.*fldpi.*"                   "push st0"
79gdb_test "info register fstat" "fstat *0x2800.*\[ \t\]+.*"  "verify fstat == 0x2800"
80gdb_test "info register ftag" "ftag *0x3ff.*\[ \t\]+.*"     "verify ftag  == 0x3ff"
81
82gdb_test "stepi" "asm.*fldlg2.*"                  "push st0"
83gdb_test "info register fstat" "fstat *0x2000.*\[ \t\]+.*"  "verify fstat == 0x2000"
84gdb_test "info register ftag" "ftag *0xff.*\[ \t\]+.*"      "verify ftag  == 0xff"
85
86gdb_test "stepi" "asm.*fldln2.*"                  "push st0"
87gdb_test "info register fstat" "fstat *0x1800.*\[ \t\]+.*"  "verify fstat == 0x1800"
88gdb_test "info register ftag" "ftag *0x3f.*\[ \t\]+.*"      "verify ftag  == 0x3f"
89
90gdb_test "stepi" "asm.*fldz.*"                    "push st0"
91gdb_test "info register fstat" "fstat *0x1000.*\[ \t\]+.*"  "verify fstat == 0x1000"
92gdb_test "info register ftag" "ftag *0xf.*\[ \t\]+.*"       "verify ftag  == 0xf"
93
94gdb_test "stepi" "asm.*nop.*"                    "push st0"
95gdb_test "info register fstat" "fstat *0x800.*\[ \t\]+.*"  "verify fstat == 0x800"
96gdb_test "info register ftag" "ftag *0x7.*\[ \t\]+.*"      "verify ftag  == 0x7"
97
98
99# move backward and ehck we get the same registers back.
100
101gdb_test "reverse-stepi" "asm.*fldz.*"           "push st0"
102gdb_test "info register fstat" "fstat *0x1000.*\[ \t\]+.*" "verify fstat == 0x1000"
103gdb_test "info register ftag" "ftag *0xf.*\[ \t\]+.*"      "verify ftag  == 0xf"
104
105gdb_test "reverse-stepi" "asm.*fldln2.*"          "push st0"
106gdb_test "info register fstat" "fstat *0x1800.*\[ \t\]+.*"  "verify fstat == 0x1800"
107gdb_test "info register ftag" "ftag *0x3f.*\[ \t\]+.*"      "verify ftag  == 0x3f"
108
109gdb_test "reverse-stepi" "asm.*fldlg2.*"          "push st0"
110gdb_test "info register fstat" "fstat *0x2000.*\[ \t\]+.*"  "verify fstat == 0x2000"
111gdb_test "info register ftag" "ftag *0xff.*\[ \t\]+.*"      "verify ftag  == 0xff"
112
113gdb_test "reverse-stepi" "asm.*fldpi.*"          "push st0"
114gdb_test "info register fstat" "fstat *0x2800.*\[ \t\]+.*" "verify fstat == 0x2800"
115gdb_test "info register ftag" "ftag *0x3ff.*\[ \t\]+.*"    "verify ftag  == 0x3ff"
116
117gdb_test "reverse-stepi" "asm.*fldl2e.*"          "push st0"
118gdb_test "info register fstat" "fstat *0x3000.*\[ \t\]+.*"  "verify fstat == 0x3000"
119gdb_test "info register ftag" "ftag *0xfff.*\[ \t\]+.*"     "verify ftag  == 0xfff"
120
121gdb_test "reverse-stepi" "asm.*fldl2t.*"          "push st0"
122gdb_test "info register fstat" "fstat *0x3800.*\[ \t\]+.*"  "verify fstat == 0x3800"
123gdb_test "info register ftag" "ftag *0x3fff.*\[ \t\]+.*"    "verify ftag  == 0x3fff"
124
125gdb_test "reverse-stepi" "asm.*fld1.*"            "push st0"
126gdb_test "info register fstat" "fstat *0.*\[ \t\]+.*"       "verify fstat == 0"
127gdb_test "info register ftag" "ftag *0xffff.*\[ \t\]+.*"    "verify ftag == 0xffff"
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