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     gdb_test "info reg v$i" "v$i.*$vector_register" "info reg v$i"
  96 }
  97
  98 gdb_test "info reg vrsave" "vrsave.*0x1\[ \t\]+1" "info reg vrsave"
  99 gdb_test "info reg vscr" "vscr.*0x1\[ \t\]+1" "info reg vscr"
 100
 101 # Now redo the same tests, but using the print command.
 102 # Note: in LE case, the char array is printed WITHOUT the last character.
 103 # Gdb treats the terminating null char in the array like the terminating
 104 # null char in a string and doesn't print it. This is not a failure, but
 105 # the way gdb works.
 106
 107 if {$endianness == "big"} {
 108      set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .0, 1, 0, 1, 0, 1, 0, 1., v16_int8 = .0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1.."
 109 } else {
 110      set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .1, 0, 1, 0, 1, 0, 1, 0., v16_int8 = .1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.."
 111 }
 112
 113 for {set i 0} {$i < 32} {incr i 1} {
 114     gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
 115     gdb_test "print \$v$i" ".* = $decimal_vector" "print v$i"
 116 }
 117
 118 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
 119 gdb_test "print \$vscr" ".* = 1" "print vscr"
 120
 121 for {set i 0} {$i < 32} {incr i 1} {
 122     lappend pattern_list "vr$i\[ \t\]+$vector_register"
 123 }
 124
 125 lappend pattern_list "vscr\[ \t\]+0x1"
 126 lappend pattern_list "vrsave\[ \t\]+0x1"
 127
 128 send_gdb "info vector\n"
 129 gdb_expect_list "info vector" ".*$gdb_prompt $" $pattern_list
 130
 131 gdb_test "break vector_fun" \
 132  "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
 133  "set breakpoint at vector_fun"
 134
 135 # Actually it is nuch easier to see these results printed in hex.
 136 gdb_test "set output-radix 16" \
 137   "Output radix now set to decimal 16, hex 10, octal 20." \
 138   "set output radix to hex"
 139
 140 gdb_test "continue" \
 141   "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
 142   "continue to vector_fun"
 143
 144 # Do a next over the assignment to vector 'a'.
 145 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
 146   "next (1)"
 147
 148 # Do a next over the assignment to vector 'b'.
 149 gdb_test "next" "c = vec_add \\(a, b\\);" \
 150   "next (2)"
 151
 152 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 153 gdb_test "print/x a" \
 154   ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
 155   "print vector parameter a"
 156
 157 gdb_test "print/x b" \
 158   ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
 159   "print vector parameter b"
 160
 161 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 162 # have in main, not the values they have in vector_fun.
 163 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
 164   "up to main"
 165
 166 gdb_test "print/x x" \
 167   ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
 168   "print vector x"
 169
 170 gdb_test "print/x y" \
 171   ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
 172   "print vector y"
 173
 174 # now go back to vector_func and do a finish, to see if we can print the return
 175 # value correctly.
 176
 177 gdb_test "down" \
 178   ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
 179   "down to vector_fun"
 180
 181 gdb_test "finish" \
 182   "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." \
 183   "finish returned correct value"
 184
 185
 186