gdb/testsuite/gdb.arch/e500-regs.exp

   1 # Copyright 2003-2024 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 E500 register setting and fetching
  18
  19 #
  20 # Test the use of registers, especially E500 registers, for Powerpc.
  21 # This file uses e500-regs.c for input.
  22 #
  23
  24 require {istarget "powerpc-*eabispe"}
  25
  26 set testfile "e500-regs"
  27 set binfile ${objdir}/${subdir}/${testfile}
  28 set src1 ${srcdir}/${subdir}/${testfile}.c
  29
  30 if  { [gdb_compile ${src1} ${binfile} executable {debug nowarnings}] != "" } {
  31      untested "failed to compile"
  32      return -1
  33 }
  34
  35 gdb_start
  36 gdb_reinitialize_dir $srcdir/$subdir
  37 gdb_load ${binfile}
  38
  39 #
  40 # Run to `main' where we begin our tests.
  41 #
  42
  43 if {![runto_main]} {
  44     return 0
  45 }
  46
  47 # set all the registers integer portions to 1
  48 for {set i 0} {$i < 32} {incr i 1} {
  49         for {set j 0} {$j < 2} {incr j 1} {
  50            gdb_test "set \$ev$i.v2_int32\[$j\] = 1" "" "set reg ev$i.v4si.f\[$j\]"
  51         }
  52 }
  53
  54 # Now execute some target code, so that GDB's register cache is flushed.
  55
  56 #gdb_test "next" "" ""
  57
  58 set endianness [get_endianness]
  59
  60 # And then read the E500 registers back, to see that
  61 # a) the register write above worked, and
  62 # b) the register read (below) also works.
  63
  64 if {$endianness == "big"} {
  65 set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x0, 0x1, 0x0, 0x1., v8_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."
  66 } else {
  67 set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x1, 0x0, 0x1, 0x0., v8_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."
  68 }
  69
  70 for {set i 0} {$i < 32} {incr i 1} {
  71         gdb_test "info reg ev$i" "ev$i.*$vector_register" "info reg ev$i"
  72 }
  73
  74 # Test whether the GPRs are updated accordingly. (GPRs are just the lower
  75 # 32 bits of the EV registers.)
  76
  77 set general_register "0x1\[ \t\]+1"
  78
  79 for {set i 0} {$i < 32} {incr i 1} {
  80         gdb_test "info reg r$i" "r$i.*$general_register" "info reg r$i"
  81 }
  82
  83 # Now redo the same tests, but using the print command.
  84
  85 if {$endianness == "big"} {
  86      set decimal_vector ".uint64 = 4294967297, v2_float = .1.*e-45, 1.*e-45., v2_int32 = .1, 1., v4_int16 = .0, 1, 0, 1., v8_int8 = .0, 0, 0, 1, 0, 0, 0, 1.."
  87 } else {
  88      set decimal_vector ".uint64 = 4294967297, v2_float = .1.*e-45, 1.*e-45., v2_int32 = .1, 1., v4_int16 = .1, 0, 1, 0., v8_int8 = .1, 0, 0, 0, 1, 0, 0, 0.."
  89 }
  90
  91 for {set i 0} {$i < 32} {incr i 1} {
  92         gdb_test "print \$ev$i" ".* = $decimal_vector" "print ev$i"
  93 }
  94
  95 for {set i 0} {$i < 32} {incr i 1} {
  96          set pattern$i ".*ev$i.*"
  97          append pattern$i $vector_register
  98 }
  99
 100 send_gdb "info vector\n"
 101 gdb_expect_list "info vector" ".*$gdb_prompt $" {
 102 [$pattern0]
 103 [$pattern1]
 104 [$pattern2]
 105 [$pattern3]
 106 [$pattern4]
 107 [$pattern5]
 108 [$pattern6]
 109 [$pattern7]
 110 [$pattern8]
 111 [$pattern9]
 112 [$pattern10]
 113 [$pattern11]
 114 [$pattern12]
 115 [$pattern13]
 116 [$pattern14]
 117 [$pattern15]
 118 [$pattern16]
 119 [$pattern17]
 120 [$pattern18]
 121 [$pattern19]
 122 [$pattern20]
 123 [$pattern21]
 124 [$pattern22]
 125 [$pattern23]
 126 [$pattern24]
 127 [$pattern25]
 128 [$pattern26]
 129 [$pattern27]
 130 [$pattern28]
 131 [$pattern29]
 132 [$pattern30]
 133 [$pattern31]
 134 }
 135
 136 # We must restart everything, because we have set important registers to
 137 # some unusual values.
 138
 139 clean_restart $binfile
 140 if {![runto_main]} {
 141     return 0
 142 }
 143
 144 gdb_test "break vector_fun" \
 145  "Breakpoint 2 at.*e500-regs.c, line \[0-9\]+\\." \
 146  "set breakpoint at vector_fun"
 147
 148 # Actually it is nuch easier to see these results printed in hex.
 149 # gdb_test "set output-radix 16" \
 150 #   "Output radix now set to decimal 16, hex 10, octal 20." \
 151 #   "set output radix to hex"
 152
 153 gdb_test "continue" \
 154   "Breakpoint 2, vector_fun .a=.-2, -2., b=.1, 1.*e500-regs.c.*ev_create_s32 .2, 2.;" \
 155   "continue to vector_fun"
 156
 157 # Do a next over the assignment to vector 'a'.
 158 gdb_test "next" ".*b = \\(vector int\\) __ev_create_s32 \\(3, 3\\);" \
 159   "next (1)"
 160
 161 # Do a next over the assignment to vector 'b'.
 162 gdb_test "next" "c = __ev_and \\(a, b\\);" \
 163   "next (2)"
 164
 165 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 166 gdb_test "print/x a" \
 167   ".*= .0x2, 0x2." \
 168   "print vector parameter a"
 169
 170 gdb_test "print/x b" \
 171   ".*= .0x3, 0x3." \
 172   "print vector parameter b"
 173
 174 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 175 # have in main, not the values they have in vector_fun.
 176 gdb_test "up" ".1.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);" \
 177   "up to main"
 178
 179 gdb_test "print x" \
 180   ".*= .-2, -2." \
 181   "print vector x"
 182
 183 gdb_test "print y" \
 184   ".*= .1, 1." \
 185   "print vector y"
 186
 187 # now go back to vector_func and do a finish, to see if we can print the return
 188 # value correctly.
 189
 190 gdb_test "down" \
 191   ".0  vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*c = __ev_and \\(a, b\\);" \
 192   "down to vector_fun"
 193
 194 gdb_test "finish" \
 195   "Run till exit from .0  vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);.*Value returned is.*= .2, 2." \
 196   "finish returned correct value"
 197
 198
 199