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

   1 # Copyright (C) 2002, 2003, 2005, 2007 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*"] || [skip_altivec_tests]} then {
  36     verbose "Skipping altivec register tests."
  37     verbose -log "Skipping altivec register tests."
  38     return
  39 }
  40
  41 set testfile "altivec-regs"
  42 set binfile ${objdir}/${subdir}/${testfile}
  43 set srcfile ${testfile}.c
  44
  45 set compile_flags {debug nowarnings}
  46 if [get_compiler_info $binfile] {
  47     warning "get_compiler failed"
  48     return -1
  49 }
  50
  51 if [test_compiler_info gcc*] {
  52     set compile_flags "$compile_flags additional_flags=-maltivec"
  53 } elseif [test_compiler_info xlc*] {
  54     set compile_flags "$compile_flags additional_flags=-qaltivec"
  55 } else {
  56     warning "unknown compiler"
  57     return -1
  58 }
  59
  60 if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
  61      untested altivec-regs.exp
  62      return -1
  63 }
  64
  65 gdb_start
  66 gdb_reinitialize_dir $srcdir/$subdir
  67 gdb_load ${binfile}
  68
  69 #
  70 # Run to `main' where we begin our tests.
  71 #
  72
  73 if ![runto_main] then {
  74     gdb_suppress_tests
  75 }
  76
  77 # set all the registers integer portions to 1
  78 for {set i 0} {$i < 32} {incr i 1} {
  79         for {set j 0} {$j < 4} {incr j 1} {
  80            gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
  81         }
  82 }
  83
  84 gdb_test "set \$vscr = 1" "" ""
  85 gdb_test "set \$vrsave = 1" "" ""
  86
  87 # Now execute some target code, so that GDB's register cache is flushed.
  88
  89 gdb_test "next" "" ""
  90
  91 send_gdb "show endian\n"
  92 gdb_expect {
  93     -re "(The target endianness is set automatically .currently )(big|little)( endian.*)$gdb_prompt $" {
  94         pass "endianness"
  95         set endianness $expect_out(2,string)
  96     }
  97     -re ".*$gdb_prompt $" {
  98         fail "couldn't get endianness"
  99     }
 100     timeout             { fail "(timeout) endianness" }
 101 }
 102
 103 # And then read the AltiVec registers back, to see that
 104 # a) the register write above worked, and
 105 # b) the register read (below) also works.
 106
 107 if {$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.."
 109 } else {
 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.."
 111 }
 112
 113 for {set i 0} {$i < 32} {incr i 1} {
 114         gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
 115 }
 116
 117 gdb_test "info reg vrsave" "vrsave.*0x1\t1" "info reg vrsave"
 118 gdb_test "info reg vscr" "vscr.*0x1\t1" "info reg vscr"
 119
 120 # Now redo the same tests, but using the print command.
 121 # Note: in LE case, the char array is printed WITHOUT the last character.
 122 # Gdb treats the terminating null char in the array like the terminating
 123 # null char in a string and doesn't print it. This is not a failure, but
 124 # the way gdb works.
 125
 126 if {$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 = ..000.000.000.001.000.000.000.001.000.000.000.001.000.000.000.001.."
 128 } else {
 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 = ..001.000.000.000.001.000.000.000.001.000.000.000.001.000.000.."
 130 }
 131
 132 for {set i 0} {$i < 32} {incr i 1} {
 133         gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
 134 }
 135
 136 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
 137 gdb_test "print \$vscr" ".* = 1" "print vscr"
 138
 139 for {set i 0} {$i < 32} {incr i 1} {
 140          set pattern$i ".*vr$i.*"
 141          append pattern$i $vector_register
 142 }
 143
 144 send_gdb "info vector\n"
 145 gdb_expect_list "info vector" ".*$gdb_prompt $" {
 146 [$pattern0]
 147 [$pattern1]
 148 [$pattern2]
 149 [$pattern3]
 150 [$pattern4]
 151 [$pattern5]
 152 [$pattern6]
 153 [$pattern7]
 154 [$pattern8]
 155 [$pattern9]
 156 [$pattern10]
 157 [$pattern11]
 158 [$pattern12]
 159 [$pattern13]
 160 [$pattern14]
 161 [$pattern15]
 162 [$pattern16]
 163 [$pattern17]
 164 [$pattern18]
 165 [$pattern19]
 166 [$pattern20]
 167 [$pattern21]
 168 [$pattern22]
 169 [$pattern23]
 170 [$pattern24]
 171 [$pattern25]
 172 [$pattern26]
 173 [$pattern27]
 174 [$pattern28]
 175 [$pattern29]
 176 [$pattern30]
 177 [$pattern31]
 178 "\[ \t\n\r\]+vscr\[ \t\]+0x1"
 179 "\[ \t\n\r\]+vrsave\[ \t\]+0x1"
 180 }
 181
 182 gdb_test "break vector_fun" \
 183  "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
 184  "Set breakpoint at vector_fun"
 185
 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"
 190
 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"
 194
 195 # Do a next over the assignment to vector 'a'.
 196 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
 197   "next (1)"
 198
 199 # Do a next over the assignment to vector 'b'.
 200 gdb_test "next" "c = vec_add \\(a, b\\);" \
 201   "next (2)"
 202
 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"
 207
 208 gdb_test "print/x b" \
 209   ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
 210   "print vector parameter b"
 211
 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\\);" \
 215   "up to main"
 216
 217 gdb_test "print/x x" \
 218   ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
 219   "print vector x"
 220
 221 gdb_test "print/x y" \
 222   ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
 223   "print vector y"
 224
 225 # now go back to vector_func and do a finish, to see if we can print the return
 226 # value correctly.
 227
 228 gdb_test "down" \
 229   ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
 230   "down to vector_fun"
 231
 232 gdb_test "finish" \
 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"
 235
 236
 237