1 # Copyright (C) 2002-2016 Free Software Foundation, Inc.
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.
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.
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/>.
17 # Tests for Powerpc AltiVec register setting and fetching
20 # Test the use of registers, especially AltiVec registers, for Powerpc.
21 # This file uses altivec-regs.c for input.
25 if {![istarget "powerpc*"] || [skip_altivec_tests]} then {
26 verbose "Skipping altivec register tests."
30 set testfile "altivec-regs"
31 set binfile ${objdir}/${subdir}/${testfile}
32 set srcfile ${testfile}.c
34 set compile_flags {debug nowarnings}
35 if [get_compiler_info] {
36 warning "get_compiler failed"
40 if [test_compiler_info gcc*] {
41 set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec"
42 } elseif [test_compiler_info xlc*] {
43 set compile_flags "$compile_flags additional_flags=-qaltivec"
45 warning "unknown compiler"
49 if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
50 untested altivec-regs.exp
55 gdb_reinitialize_dir $srcdir/$subdir
59 # Run to `main' where we begin our tests.
62 if ![runto_main] then {
66 gdb_test "set print frame-arguments all"
68 # set all the registers integer portions to 1
69 for {set i 0} {$i < 32} {incr i 1} {
70 for {set j 0} {$j < 4} {incr j 1} {
71 gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
75 gdb_test "set \$vscr = 1" "" ""
76 gdb_test "set \$vrsave = 1" "" ""
78 # Now execute some target code, so that GDB's register cache is flushed.
83 set msg "detect endianness"
84 gdb_test_multiple "show endian" "$msg" {
85 -re "(The target endianness is set automatically .currently )(big|little)( endian.*)$gdb_prompt $" {
87 set endianness $expect_out(2,string)
89 -re ".*$gdb_prompt $" {
94 # And then read the AltiVec registers back, to see that
95 # a) the register write above worked, and
96 # b) the register read (below) also works.
98 if {$endianness == "big"} {
99 set vector_register ".uint128 = 0x00000001000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., 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.."
101 set vector_register ".uint128 = 0x00000001000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., 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.."
104 for {set i 0} {$i < 32} {incr i 1} {
105 gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
108 gdb_test "info reg vrsave" "vrsave.*0x1\t1" "info reg vrsave"
109 gdb_test "info reg vscr" "vscr.*0x1\t1" "info reg vscr"
111 # Now redo the same tests, but using the print command.
112 # Note: in LE case, the char array is printed WITHOUT the last character.
113 # Gdb treats the terminating null char in the array like the terminating
114 # null char in a string and doesn't print it. This is not a failure, but
117 if {$endianness == "big"} {
118 set decimal_vector ".uint128 = 0x00000001000000010000000100000001, 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.."
120 set decimal_vector ".uint128 = 0x00000001000000010000000100000001, 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.."
123 for {set i 0} {$i < 32} {incr i 1} {
124 gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
127 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
128 gdb_test "print \$vscr" ".* = 1" "print vscr"
130 for {set i 0} {$i < 32} {incr i 1} {
131 set pattern$i ".*vr$i.*"
132 append pattern$i $vector_register
135 send_gdb "info vector\n"
136 gdb_expect_list "info vector" ".*$gdb_prompt $" {
169 "\[ \t\n\r\]+vscr\[ \t\]+0x1"
170 "\[ \t\n\r\]+vrsave\[ \t\]+0x1"
173 gdb_test "break vector_fun" \
174 "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
175 "Set breakpoint at vector_fun"
177 # Actually it is nuch easier to see these results printed in hex.
178 gdb_test "set output-radix 16" \
179 "Output radix now set to decimal 16, hex 10, octal 20." \
180 "Set output radix to hex"
182 gdb_test "continue" \
183 "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
184 "continue to vector_fun"
186 # Do a next over the assignment to vector 'a'.
187 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
190 # Do a next over the assignment to vector 'b'.
191 gdb_test "next" "c = vec_add \\(a, b\\);" \
194 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
195 gdb_test "print/x a" \
196 ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
197 "print vector parameter a"
199 gdb_test "print/x b" \
200 ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
201 "print vector parameter b"
203 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
204 # have in main, not the values they have in vector_fun.
205 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
208 gdb_test "print/x x" \
209 ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
212 gdb_test "print/x y" \
213 ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
216 # now go back to vector_func and do a finish, to see if we can print the return
220 ".0 vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
224 "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." \
225 "finish returned correct value"