gdb/testsuite/gdb.arch/altivec-regs.exp

   1 # Copyright (C) 2002, 2003, 2005, 2007, 2008 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 if $tracelevel then {
  20     strace $tracelevel
  21 }
  22
  23 #
  24 # Test the use of registers, especially AltiVec registers, for Powerpc.
  25 # This file uses altivec-regs.c for input.
  26 #
  27
  28 set prms_id 0
  29 set bug_id 0
  30
  31 if {![istarget "powerpc*"] || [skip_altivec_tests]} then {
  32     verbose "Skipping altivec register tests."
  33     verbose -log "Skipping altivec register tests."
  34     return
  35 }
  36
  37 set testfile "altivec-regs"
  38 set binfile ${objdir}/${subdir}/${testfile}
  39 set srcfile ${testfile}.c
  40
  41 set compile_flags {debug nowarnings}
  42 if [get_compiler_info $binfile] {
  43     warning "get_compiler failed"
  44     return -1
  45 }
  46
  47 if [test_compiler_info gcc*] {
  48     set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec"
  49 } elseif [test_compiler_info xlc*] {
  50     set compile_flags "$compile_flags additional_flags=-qaltivec"
  51 } else {
  52     warning "unknown compiler"
  53     return -1
  54 }
  55
  56 if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
  57      untested altivec-regs.exp
  58      return -1
  59 }
  60
  61 gdb_start
  62 gdb_reinitialize_dir $srcdir/$subdir
  63 gdb_load ${binfile}
  64
  65 #
  66 # Run to `main' where we begin our tests.
  67 #
  68
  69 if ![runto_main] then {
  70     gdb_suppress_tests
  71 }
  72
  73 # set all the registers integer portions to 1
  74 for {set i 0} {$i < 32} {incr i 1} {
  75         for {set j 0} {$j < 4} {incr j 1} {
  76            gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
  77         }
  78 }
  79
  80 gdb_test "set \$vscr = 1" "" ""
  81 gdb_test "set \$vrsave = 1" "" ""
  82
  83 # Now execute some target code, so that GDB's register cache is flushed.
  84
  85 gdb_test "next" "" ""
  86
  87 send_gdb "show endian\n"
  88 set endianness ""
  89 gdb_expect {
  90     -re "(The target endianness is set automatically .currently )(big|little)( endian.*)$gdb_prompt $" {
  91         pass "endianness"
  92         set endianness $expect_out(2,string)
  93     }
  94     -re ".*$gdb_prompt $" {
  95         fail "couldn't get endianness"
  96     }
  97     timeout             { fail "(timeout) endianness" }
  98 }
  99
 100 # And then read the AltiVec registers back, to see that
 101 # a) the register write above worked, and
 102 # b) the register read (below) also works.
 103
 104 if {$endianness == "big"} {
 105 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.."
 106 } else {
 107 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.."
 108 }
 109
 110 for {set i 0} {$i < 32} {incr i 1} {
 111         gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
 112 }
 113
 114 gdb_test "info reg vrsave" "vrsave.*0x1\t1" "info reg vrsave"
 115 gdb_test "info reg vscr" "vscr.*0x1\t1" "info reg vscr"
 116
 117 # Now redo the same tests, but using the print command.
 118 # Note: in LE case, the char array is printed WITHOUT the last character.
 119 # Gdb treats the terminating null char in the array like the terminating
 120 # null char in a string and doesn't print it. This is not a failure, but
 121 # the way gdb works.
 122
 123 if {$endianness == "big"} {
 124      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.."
 125 } else {
 126      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.."
 127 }
 128
 129 for {set i 0} {$i < 32} {incr i 1} {
 130         gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
 131 }
 132
 133 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
 134 gdb_test "print \$vscr" ".* = 1" "print vscr"
 135
 136 for {set i 0} {$i < 32} {incr i 1} {
 137          set pattern$i ".*vr$i.*"
 138          append pattern$i $vector_register
 139 }
 140
 141 send_gdb "info vector\n"
 142 gdb_expect_list "info vector" ".*$gdb_prompt $" {
 143 [$pattern0]
 144 [$pattern1]
 145 [$pattern2]
 146 [$pattern3]
 147 [$pattern4]
 148 [$pattern5]
 149 [$pattern6]
 150 [$pattern7]
 151 [$pattern8]
 152 [$pattern9]
 153 [$pattern10]
 154 [$pattern11]
 155 [$pattern12]
 156 [$pattern13]
 157 [$pattern14]
 158 [$pattern15]
 159 [$pattern16]
 160 [$pattern17]
 161 [$pattern18]
 162 [$pattern19]
 163 [$pattern20]
 164 [$pattern21]
 165 [$pattern22]
 166 [$pattern23]
 167 [$pattern24]
 168 [$pattern25]
 169 [$pattern26]
 170 [$pattern27]
 171 [$pattern28]
 172 [$pattern29]
 173 [$pattern30]
 174 [$pattern31]
 175 "\[ \t\n\r\]+vscr\[ \t\]+0x1"
 176 "\[ \t\n\r\]+vrsave\[ \t\]+0x1"
 177 }
 178
 179 gdb_test "break vector_fun" \
 180  "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
 181  "Set breakpoint at vector_fun"
 182
 183 # Actually it is nuch easier to see these results printed in hex.
 184 gdb_test "set output-radix 16" \
 185   "Output radix now set to decimal 16, hex 10, octal 20." \
 186   "Set output radix to hex"
 187
 188 gdb_test "continue" \
 189   "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
 190   "continue to vector_fun"
 191
 192 # Do a next over the assignment to vector 'a'.
 193 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
 194   "next (1)"
 195
 196 # Do a next over the assignment to vector 'b'.
 197 gdb_test "next" "c = vec_add \\(a, b\\);" \
 198   "next (2)"
 199
 200 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 201 gdb_test "print/x a" \
 202   ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
 203   "print vector parameter a"
 204
 205 gdb_test "print/x b" \
 206   ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
 207   "print vector parameter b"
 208
 209 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 210 # have in main, not the values they have in vector_fun.
 211 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
 212   "up to main"
 213
 214 gdb_test "print/x x" \
 215   ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
 216   "print vector x"
 217
 218 gdb_test "print/x y" \
 219   ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
 220   "print vector y"
 221
 222 # now go back to vector_func and do a finish, to see if we can print the return
 223 # value correctly.
 224
 225 gdb_test "down" \
 226   ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
 227   "down to vector_fun"
 228
 229 gdb_test "finish" \
 230   "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." \
 231   "finish returned correct value"
 232
 233
 234