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

   1 # Copyright (C) 2002-2022 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]} {
  26     verbose "Skipping altivec register tests."
  27     return
  28 }
  29
  30 standard_testfile
  31
  32 set compile_flags {debug nowarnings}
  33 if [test_compiler_info gcc*] {
  34     set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec"
  35 } elseif [test_compiler_info xlc*] {
  36     set compile_flags "$compile_flags additional_flags=-qaltivec"
  37 } else {
  38     warning "unknown compiler"
  39     return -1
  40 }
  41
  42 if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
  43      untested "failed to compile"
  44      return -1
  45 }
  46
  47 gdb_start
  48 gdb_reinitialize_dir $srcdir/$subdir
  49 gdb_load ${binfile}
  50
  51 #
  52 # Run to `main' where we begin our tests.
  53 #
  54
  55 if {![runto_main]} {
  56     return 0
  57 }
  58
  59 gdb_test "set print frame-arguments all"
  60
  61 # set all the registers integer portions to 1
  62 for {set i 0} {$i < 32} {incr i 1} {
  63         for {set j 0} {$j < 4} {incr j 1} {
  64            gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
  65         }
  66 }
  67
  68 gdb_test "set \$vscr = 1" "" ""
  69 gdb_test "set \$vrsave = 1" "" ""
  70
  71 # Now execute some target code, so that GDB's register cache is flushed.
  72
  73 gdb_test "next" "" ""
  74
  75 set endianness [get_endianness]
  76
  77 # And then read the AltiVec registers back, to see that
  78 # a) the register write above worked, and
  79 # b) the register read (below) also works.
  80
  81 if {$endianness == "big"} {
  82 set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x1, 0x1, 0x1, 0x1., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1., v16_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."
  83 } else {
  84 set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x1, 0x1, 0x1, 0x1., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0., v16_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."
  85 }
  86
  87 for {set i 0} {$i < 32} {incr i 1} {
  88     gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
  89     gdb_test "info reg v$i" "v$i.*$vector_register" "info reg v$i"
  90 }
  91
  92 gdb_test "info reg vrsave" "vrsave.*0x1\[ \t\]+1" "info reg vrsave"
  93 gdb_test "info reg vscr" "vscr.*0x1\[ \t\]+1" "info reg vscr"
  94
  95 # Now redo the same tests, but using the print command.
  96 # Note: in LE case, the char array is printed WITHOUT the last character.
  97 # Gdb treats the terminating null char in the array like the terminating
  98 # null char in a string and doesn't print it. This is not a failure, but
  99 # the way gdb works.
 100
 101 if {$endianness == "big"} {
 102     set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .0, 1, 0, 1, 0, 1, 0, 1., v16_int8 = .0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1.."
 103 } else {
 104     set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .1, 0, 1, 0, 1, 0, 1, 0., v16_int8 = .1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.."
 105 }
 106
 107 for {set i 0} {$i < 32} {incr i 1} {
 108     gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
 109     gdb_test "print \$v$i" ".* = $decimal_vector" "print v$i"
 110 }
 111
 112 gdb_test "print \$vrsave" ".* = 1" "print vrsave"
 113 gdb_test "print \$vscr" ".* = 1" "print vscr"
 114
 115 for {set i 0} {$i < 32} {incr i 1} {
 116     lappend pattern_list "vr$i\[ \t\]+$vector_register"
 117 }
 118
 119 lappend pattern_list "vscr\[ \t\]+0x1"
 120 lappend pattern_list "vrsave\[ \t\]+0x1"
 121
 122 send_gdb "info vector\n"
 123 gdb_expect_list "info vector" ".*$gdb_prompt $" $pattern_list
 124
 125 gdb_test "break vector_fun" \
 126  "Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
 127  "set breakpoint at vector_fun"
 128
 129 # Actually it is nuch easier to see these results printed in hex.
 130 gdb_test "set output-radix 16" \
 131   "Output radix now set to decimal 16, hex 10, octal 20." \
 132   "set output radix to hex"
 133
 134 gdb_test "continue" \
 135   "Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
 136   "continue to vector_fun"
 137
 138 # Do a next over the assignment to vector 'a'.
 139 gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
 140   "next (1)"
 141
 142 # Do a next over the assignment to vector 'b'.
 143 gdb_test "next" "c = vec_add \\(a, b\\);" \
 144   "next (2)"
 145
 146 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 147 gdb_test "print/x a" \
 148   ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
 149   "print vector parameter a"
 150
 151 gdb_test "print/x b" \
 152   ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
 153   "print vector parameter b"
 154
 155 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 156 # have in main, not the values they have in vector_fun.
 157 gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
 158   "up to main"
 159
 160 gdb_test "print/x x" \
 161   ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
 162   "print vector x"
 163
 164 gdb_test "print/x y" \
 165   ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
 166   "print vector y"
 167
 168 # now go back to vector_func and do a finish, to see if we can print the return
 169 # value correctly.
 170
 171 gdb_test "down" \
 172   ".0  vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
 173   "down to vector_fun"
 174
 175 gdb_test "finish" \
 176   "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." \
 177   "finish returned correct value"
 178
 179
 180