1 # Copyright (C) 2002, 2003, 2005, 2007 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/>.
16 # Please email any bugs, comments, and/or additions to this file to:
17 # bug-gdb@prep.ai.mit.edu
20 # Tests for Powerpc AltiVec register setting and fetching
27 # Test the use of registers, especially AltiVec registers, for Powerpc.
28 # This file uses altivec-regs.c for input.
34 if {![istarget "powerpc*"] || [skip_altivec_tests]} then {
35 verbose "Skipping altivec register tests."
36 verbose -log "Skipping altivec register tests."
40 set testfile "altivec-regs"
41 set binfile ${objdir}/${subdir}/${testfile}
42 set srcfile ${testfile}.c
44 set compile_flags {debug nowarnings}
45 if [get_compiler_info $binfile] {
46 warning "get_compiler failed"
50 if [test_compiler_info gcc*] {
51 set compile_flags "$compile_flags additional_flags=-maltivec"
52 } elseif [test_compiler_info xlc*] {
53 set compile_flags "$compile_flags additional_flags=-qaltivec"
55 warning "unknown compiler"
59 if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
60 untested altivec-regs.exp
65 gdb_reinitialize_dir $srcdir/$subdir
69 # Run to `main' where we begin our tests.
72 if ![runto_main] then {
76 # set all the registers integer portions to 1
77 for {set i 0} {$i < 32} {incr i 1} {
78 for {set j 0} {$j < 4} {incr j 1} {
79 gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
83 gdb_test "set \$vscr = 1" "" ""
84 gdb_test "set \$vrsave = 1" "" ""
86 # Now execute some target code, so that GDB's register cache is flushed.
90 send_gdb "show endian\n"
93 -re "(The target endianness is set automatically .currently )(big|little)( endian.*)$gdb_prompt $" {
95 set endianness $expect_out(2,string)
97 -re ".*$gdb_prompt $" {
98 fail "couldn't get endianness"
100 timeout { fail "(timeout) endianness" }
103 # And then read the AltiVec registers back, to see that
104 # a) the register write above worked, and
105 # b) the register read (below) also works.
107 if {$endianness == "big"} {
108 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.."
110 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.."
113 for {set i 0} {$i < 32} {incr i 1} {
114 gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
117 gdb_test "info reg vrsave" "vrsave.*0x1\t1" "info reg vrsave"
118 gdb_test "info reg vscr" "vscr.*0x1\t1" "info reg vscr"
120 # Now redo the same tests, but using the print command.
121 # Note: in LE case, the char array is printed WITHOUT the last character.
122 # Gdb treats the terminating null char in the array like the terminating
123 # null char in a string and doesn't print it. This is not a failure, but
126 if {$endianness == "big"} {
127 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 '.0', 0 '.0', 1 '.001', 0 '.0', 0 '.0', 0 '.0', 1 '.001', 0 '.0', 0 '.0', 0 '.0', 1 '.001', 0 '.0', 0 '.0', 0 '.0', 1 '.001'.."
129 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 '.001', 0 '.0', 0 '.0', 0 '.0', 1 '.001', 0 '.0', 0 '.0', 0 '.0', 1 '.001', 0 '.0', 0 '.0', 0 '.0', 1 '.001', 0 '.0', 0 '.0'.."
132 for {set i 0} {$i < 32} {incr i 1} {
133 gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
136 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
137 gdb_test "print \$vscr" ".* = 1" "print vscr"
139 for {set i 0} {$i < 32} {incr i 1} {
140 set pattern$i ".*vr$i.*"
141 append pattern$i $vector_register
144 send_gdb "info vector\n"
145 gdb_expect_list "info vector" ".*$gdb_prompt $" {
178 "\[ \t\n\r\]+vscr\[ \t\]+0x1"
179 "\[ \t\n\r\]+vrsave\[ \t\]+0x1"
182 gdb_test "break vector_fun" \
183 "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
184 "Set breakpoint at vector_fun"
186 # Actually it is nuch easier to see these results printed in hex.
187 gdb_test "set output-radix 16" \
188 "Output radix now set to decimal 16, hex 10, octal 20." \
189 "Set output radix to hex"
191 gdb_test "continue" \
192 "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
193 "continue to vector_fun"
195 # Do a next over the assignment to vector 'a'.
196 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
199 # Do a next over the assignment to vector 'b'.
200 gdb_test "next" "c = vec_add \\(a, b\\);" \
203 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
204 gdb_test "print/x a" \
205 ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
206 "print vector parameter a"
208 gdb_test "print/x b" \
209 ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
210 "print vector parameter b"
212 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
213 # have in main, not the values they have in vector_fun.
214 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
217 gdb_test "print/x x" \
218 ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
221 gdb_test "print/x y" \
222 ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
225 # now go back to vector_func and do a finish, to see if we can print the return
229 ".0 vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
233 "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." \
234 "finish returned correct value"