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

   1 # Copyright (C) 2002-2019 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 #
  20 # Test the use of registers, especially AltiVec registers, for Powerpc.
  21 # This file uses altivec-regs.c for input.
  22 #
  23
  24
  25 if {![istarget "powerpc*"] || [skip_altivec_tests]} then {
  26     verbose "Skipping altivec register tests."
  27     return
  28 }
  29
  30 standard_testfile
  31
  32 set compile_flags {debug nowarnings}
  33 if [get_compiler_info] {
  34     warning "get_compiler failed"
  35     return -1
  36 }
  37
  38 if [test_compiler_info gcc*] {
  39     set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec"
  40 } elseif [test_compiler_info xlc*] {
  41     set compile_flags "$compile_flags additional_flags=-qaltivec"
  42 } else {
  43     warning "unknown compiler"
  44     return -1
  45 }
  46
  47 if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
  48      untested "failed to compile"
  49      return -1
  50 }
  51
  52 gdb_start
  53 gdb_reinitialize_dir $srcdir/$subdir
  54 gdb_load ${binfile}
  55
  56 #
  57 # Run to `main' where we begin our tests.
  58 #
  59
  60 if ![runto_main] then {
  61     fail "can't run to main"
  62     return 0
  63 }
  64
  65 gdb_test "set print frame-arguments all"
  66
  67 # set all the registers integer portions to 1
  68 for {set i 0} {$i < 32} {incr i 1} {
  69         for {set j 0} {$j < 4} {incr j 1} {
  70            gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
  71         }
  72 }
  73
  74 gdb_test "set \$vscr = 1" "" ""
  75 gdb_test "set \$vrsave = 1" "" ""
  76
  77 # Now execute some target code, so that GDB's register cache is flushed.
  78
  79 gdb_test "next" "" ""
  80
  81 set endianness [get_endianness]
  82
  83 # And then read the AltiVec registers back, to see that
  84 # a) the register write above worked, and
  85 # b) the register read (below) also works.
  86
  87 if {$endianness == "big"} {
  88 set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1., v16_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."
  89 } else {
  90 set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0., v16_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."
  91 }
  92
  93 for {set i 0} {$i < 32} {incr i 1} {
  94         gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
  95 }
  96
  97 gdb_test "info reg vrsave" "vrsave.*0x1\[ \t\]+1" "info reg vrsave"
  98 gdb_test "info reg vscr" "vscr.*0x1\[ \t\]+1" "info reg vscr"
  99
 100 # Now redo the same tests, but using the print command.
 101 # Note: in LE case, the char array is printed WITHOUT the last character.
 102 # Gdb treats the terminating null char in the array like the terminating
 103 # null char in a string and doesn't print it. This is not a failure, but
 104 # the way gdb works.
 105
 106 if {$endianness == "big"} {
 107      set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .0, 1, 0, 1, 0, 1, 0, 1., v16_int8 = .0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1.."
 108 } else {
 109      set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .1, 0, 1, 0, 1, 0, 1, 0., v16_int8 = .1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.."
 110 }
 111
 112 for {set i 0} {$i < 32} {incr i 1} {
 113         gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
 114 }
 115
 116 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
 117 gdb_test "print \$vscr" ".* = 1" "print vscr"
 118
 119 for {set i 0} {$i < 32} {incr i 1} {
 120          set pattern$i ".*vr$i.*"
 121          append pattern$i $vector_register
 122 }
 123
 124 send_gdb "info vector\n"
 125 gdb_expect_list "info vector" ".*$gdb_prompt $" {
 126 [$pattern0]
 127 [$pattern1]
 128 [$pattern2]
 129 [$pattern3]
 130 [$pattern4]
 131 [$pattern5]
 132 [$pattern6]
 133 [$pattern7]
 134 [$pattern8]
 135 [$pattern9]
 136 [$pattern10]
 137 [$pattern11]
 138 [$pattern12]
 139 [$pattern13]
 140 [$pattern14]
 141 [$pattern15]
 142 [$pattern16]
 143 [$pattern17]
 144 [$pattern18]
 145 [$pattern19]
 146 [$pattern20]
 147 [$pattern21]
 148 [$pattern22]
 149 [$pattern23]
 150 [$pattern24]
 151 [$pattern25]
 152 [$pattern26]
 153 [$pattern27]
 154 [$pattern28]
 155 [$pattern29]
 156 [$pattern30]
 157 [$pattern31]
 158 "\[ \t\n\r\]+vscr\[ \t\]+0x1"
 159 "\[ \t\n\r\]+vrsave\[ \t\]+0x1"
 160 }
 161
 162 gdb_test "break vector_fun" \
 163  "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
 164  "set breakpoint at vector_fun"
 165
 166 # Actually it is nuch easier to see these results printed in hex.
 167 gdb_test "set output-radix 16" \
 168   "Output radix now set to decimal 16, hex 10, octal 20." \
 169   "set output radix to hex"
 170
 171 gdb_test "continue" \
 172   "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
 173   "continue to vector_fun"
 174
 175 # Do a next over the assignment to vector 'a'.
 176 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
 177   "next (1)"
 178
 179 # Do a next over the assignment to vector 'b'.
 180 gdb_test "next" "c = vec_add \\(a, b\\);" \
 181   "next (2)"
 182
 183 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 184 gdb_test "print/x a" \
 185   ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
 186   "print vector parameter a"
 187
 188 gdb_test "print/x b" \
 189   ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
 190   "print vector parameter b"
 191
 192 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 193 # have in main, not the values they have in vector_fun.
 194 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
 195   "up to main"
 196
 197 gdb_test "print/x x" \
 198   ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
 199   "print vector x"
 200
 201 gdb_test "print/x y" \
 202   ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
 203   "print vector y"
 204
 205 # now go back to vector_func and do a finish, to see if we can print the return
 206 # value correctly.
 207
 208 gdb_test "down" \
 209   ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
 210   "down to vector_fun"
 211
 212 gdb_test "finish" \
 213   "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." \
 214   "finish returned correct value"
 215
 216
 217