xref: /netbsd-src/external/gpl3/gdb.old/dist/gdb/testsuite/gdb.arch/altivec-regs.exp (revision c9055873d0546e63388f027d3d7f85381cde0545) 
1# Copyright (C) 2002-2023 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
17# Tests for Powerpc AltiVec register setting and fetching
18
19#
20# Test the use of registers, especially AltiVec registers, for Powerpc.
21# This file uses altivec-regs.c for input.
22#
23
24
25if {![istarget "powerpc*"] || [skip_altivec_tests]} {
26    verbose "Skipping altivec register tests."
27    return
28}
29
30standard_testfile
31
32set compile_flags {debug nowarnings}
33if [test_compiler_info gcc*] {
34    set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec"
35} elseif [test_compiler_info xlc*] {
36    set compile_flags "$compile_flags additional_flags=-qaltivec"
37} else {
38    warning "unknown compiler"
39    return -1
40}
41
42if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
43     untested "failed to compile"
44     return -1
45}
46
47gdb_start
48gdb_reinitialize_dir $srcdir/$subdir
49gdb_load ${binfile}
50
51#
52# Run to `main' where we begin our tests.
53#
54
55if {![runto_main]} {
56    return 0
57}
58
59gdb_test "set print frame-arguments all"
60
61# set all the registers integer portions to 1
62for {set i 0} {$i < 32} {incr i 1} {
63        for {set j 0} {$j < 4} {incr j 1} {
64           gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
65        }
66}
67
68gdb_test "set \$vscr = 1" "" ""
69gdb_test "set \$vrsave = 1" "" ""
70
71# Now execute some target code, so that GDB's register cache is flushed.
72
73gdb_test "next" "" ""
74
75set endianness [get_endianness]
76
77# And then read the AltiVec registers back, to see that
78# a) the register write above worked, and
79# b) the register read (below) also works.
80
81if {$endianness == "big"} {
82set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x1, 0x1, 0x1, 0x1., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1., v16_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."
83} else {
84set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x1, 0x1, 0x1, 0x1., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0., v16_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."
85}
86
87for {set i 0} {$i < 32} {incr i 1} {
88    gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
89    gdb_test "info reg v$i" "v$i.*$vector_register" "info reg v$i"
90}
91
92gdb_test "info reg vrsave" "vrsave.*0x1\[ \t\]+1" "info reg vrsave"
93gdb_test "info reg vscr" "vscr.*0x1\[ \t\]+1" "info reg vscr"
94
95# Now redo the same tests, but using the print command.
96# Note: in LE case, the char array is printed WITHOUT the last character.
97# Gdb treats the terminating null char in the array like the terminating
98# null char in a string and doesn't print it. This is not a failure, but
99# the way gdb works.
100
101if {$endianness == "big"} {
102    set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .0, 1, 0, 1, 0, 1, 0, 1., v16_int8 = .0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1.."
103} else {
104    set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .1, 0, 1, 0, 1, 0, 1, 0., v16_int8 = .1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.."
105}
106
107for {set i 0} {$i < 32} {incr i 1} {
108    gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
109    gdb_test "print \$v$i" ".* = $decimal_vector" "print v$i"
110}
111
112gdb_test "print \$vrsave" ".* = 1" "print vrsave"
113gdb_test "print \$vscr" ".* = 1" "print vscr"
114
115for {set i 0} {$i < 32} {incr i 1} {
116    lappend pattern_list "vr$i\[ \t\]+$vector_register"
117}
118
119lappend pattern_list "vscr\[ \t\]+0x1"
120lappend pattern_list "vrsave\[ \t\]+0x1"
121
122send_gdb "info vector\n"
123gdb_expect_list "info vector" ".*$gdb_prompt $" $pattern_list
124
125gdb_test "break vector_fun" \
126 "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
127 "set breakpoint at vector_fun"
128
129# Actually it is nuch easier to see these results printed in hex.
130gdb_test "set output-radix 16" \
131  "Output radix now set to decimal 16, hex 10, octal 20." \
132  "set output radix to hex"
133
134gdb_test "continue" \
135  "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
136  "continue to vector_fun"
137
138# Do a next over the assignment to vector 'a'.
139gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
140  "next (1)"
141
142# Do a next over the assignment to vector 'b'.
143gdb_test "next" "c = vec_add \\(a, b\\);" \
144  "next (2)"
145
146# Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
147gdb_test "print/x a" \
148  ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
149  "print vector parameter a"
150
151gdb_test "print/x b" \
152  ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
153  "print vector parameter b"
154
155# If we do an 'up' now, and print 'x' and 'y' we should see the values they
156# have in main, not the values they have in vector_fun.
157gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
158  "up to main"
159
160gdb_test "print/x x" \
161  ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
162  "print vector x"
163
164gdb_test "print/x y" \
165  ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
166  "print vector y"
167
168# now go back to vector_func and do a finish, to see if we can print the return
169# value correctly.
170
171gdb_test "down" \
172  ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
173  "down to vector_fun"
174
175gdb_test "finish" \
176  "Run till exit from .0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*in main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);.*Value returned is.*= .0x5050505, 0x5050505, 0x5050505, 0x5050505." \
177  "finish returned correct value"
178
179
180
181