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

   1 # Copyright (C) 2002, 2003 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  16 #
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19 #
  20
  21 # Tests for Powerpc AltiVec register setting and fetching
  22
  23 if $tracelevel then {
  24     strace $tracelevel
  25 }
  26
  27 #
  28 # Test the use of registers, especially AltiVec registers, for Powerpc.
  29 # This file uses altivec-regs.c for input.
  30 #
  31
  32 set prms_id 0
  33 set bug_id 0
  34
  35 if ![istarget "powerpc-*altivec"] then {
  36     verbose "Skipping altivec register tests."
  37     return
  38 }
  39
  40 set testfile "altivec-regs"
  41 set binfile ${objdir}/${subdir}/${testfile}
  42 set srcfile ${testfile}.c
  43
  44 if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable {debug additional_flags=-w}] != "" } {
  45      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  46 }
  47
  48 gdb_start
  49 gdb_reinitialize_dir $srcdir/$subdir
  50 gdb_load ${binfile}
  51
  52 #
  53 # Run to `main' where we begin our tests.
  54 #
  55
  56 if ![runto_main] then {
  57     gdb_suppress_tests
  58 }
  59
  60 # set all the registers integer portions to 1
  61 for {set i 0} {$i < 32} {incr i 1} {
  62         for {set j 0} {$j < 4} {incr j 1} {
  63            gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
  64         }
  65 }
  66
  67 gdb_test "set \$vscr = 1" "" ""
  68 gdb_test "set \$vrsave = 1" "" ""
  69
  70 # Now execute some target code, so that GDB's register cache is flushed.
  71
  72 gdb_test "next" "" ""
  73
  74 send_gdb "show endian\n"
  75 gdb_expect {
  76     -re "(The target endianness is set automatically .currently )(big|little)( endian.*)$gdb_prompt $" {
  77         pass "endianness"
  78         set endianness $expect_out(2,string)
  79     }
  80     -re ".*$gdb_prompt $" {
  81         fail "couldn't get endianness"
  82     }
  83     timeout             { fail "(timeout) endianness" }
  84 }
  85
  86 # And then read the AltiVec registers back, to see that
  87 # a) the register write above worked, and
  88 # b) the register read (below) also works.
  89
  90 if {$endianness == "big"} {
  91 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.."
  92 } else {
  93 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.."
  94 }
  95
  96 for {set i 0} {$i < 32} {incr i 1} {
  97         gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
  98 }
  99
 100 gdb_test "info reg vrsave" "vrsave.*0x1" "info reg vrsave"
 101 gdb_test "info reg vscr" "vscr.*0x1" "info reg vscr"
 102
 103 # Now redo the same tests, but using the print command.
 104 # Note: in LE case, the char array is printed WITHOUT the last character.
 105 # Gdb treats the terminating null char in the array like the terminating
 106 # null char in a string and doesn't print it. This is not a failure, but
 107 # the way gdb works.
 108
 109 if {$endianness == "big"} {
 110      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 = ..0.0.0.001.0.0.0.001.0.0.0.001.0.0.0.001.."
 111 } else {
 112      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 = ..001.0.0.0.001.0.0.0.001.0.0.0.001.0.0.."
 113 }
 114
 115 for {set i 0} {$i < 32} {incr i 1} {
 116         gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
 117 }
 118
 119 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
 120 gdb_test "print \$vscr" ".* = 1" "print vscr"
 121
 122 for {set i 0} {$i < 32} {incr i 1} {
 123          set pattern$i ".*vr$i.*"
 124          append pattern$i $vector_register
 125 }
 126
 127 send_gdb "info powerpc altivec\n"
 128 gdb_expect_list "info powerpc altivec" ".*$gdb_prompt $" {
 129 [$pattern0]
 130 [$pattern1]
 131 [$pattern2]
 132 [$pattern3]
 133 [$pattern4]
 134 [$pattern5]
 135 [$pattern6]
 136 [$pattern7]
 137 [$pattern8]
 138 [$pattern9]
 139 [$pattern10]
 140 [$pattern11]
 141 [$pattern12]
 142 [$pattern13]
 143 [$pattern14]
 144 [$pattern15]
 145 [$pattern16]
 146 [$pattern17]
 147 [$pattern18]
 148 [$pattern19]
 149 [$pattern20]
 150 [$pattern21]
 151 [$pattern22]
 152 [$pattern23]
 153 [$pattern24]
 154 [$pattern25]
 155 [$pattern26]
 156 [$pattern27]
 157 [$pattern28]
 158 [$pattern29]
 159 [$pattern30]
 160 [$pattern31]
 161 "\[ \t\n\r\]+vscr\[ \t\]+0x1"
 162 "\[ \t\n\r\]+vrsave\[ \t\]+0x1"
 163 }
 164
 165 gdb_test "break vector_fun" \
 166  "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
 167  "Set breakpoint at vector_fun"
 168
 169 # Actually it is nuch easier to see these results printed in hex.
 170 gdb_test "set output-radix 16" \
 171   "Output radix now set to decimal 16, hex 10, octal 20." \
 172   "Set output radix to hex"
 173
 174 gdb_test "continue" \
 175   "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
 176   "continue to vector_fun"
 177
 178 # Do a next over the assignment to vector 'a'.
 179 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
 180   "next (1)"
 181
 182 # Do a next over the assignment to vector 'b'.
 183 gdb_test "next" "c = vec_add \\(a, b\\);" \
 184   "next (2)"
 185
 186 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 187 gdb_test "print/x a" \
 188   ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
 189   "print vector parameter a"
 190
 191 gdb_test "print/x b" \
 192   ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
 193   "print vector parameter b"
 194
 195 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 196 # have in main, not the values they have in vector_fun.
 197 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
 198   "up to main"
 199
 200 gdb_test "print/x x" \
 201   ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
 202   "print vector x"
 203
 204 gdb_test "print/x y" \
 205   ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
 206   "print vector y"
 207
 208 # now go back to vector_func and do a finish, to see if we can print the return
 209 # value correctly.
 210
 211 gdb_test "down" \
 212   ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
 213   "down to vector_fun"
 214
 215 gdb_test "finish" \
 216   "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." \
 217   "finish returned correct value"
 218
 219
 220