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

   1 # Copyright 2003-2021 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
  25 if ![istarget "powerpc-*eabispe"] then {
  26     verbose "Skipping e500 register tests."
  27     return
  28 }
  29
  30 set testfile "e500-regs"
  31 set binfile ${objdir}/${subdir}/${testfile}
  32 set src1 ${srcdir}/${subdir}/${testfile}.c
  33
  34 if  { [gdb_compile ${src1} ${binfile} executable {debug nowarnings}] != "" } {
  35      untested "failed to compile"
  36      return -1
  37 }
  38
  39 gdb_start
  40 gdb_reinitialize_dir $srcdir/$subdir
  41 gdb_load ${binfile}
  42
  43 #
  44 # Run to `main' where we begin our tests.
  45 #
  46
  47 if ![runto_main] then {
  48     return 0
  49 }
  50
  51 # set all the registers integer portions to 1
  52 for {set i 0} {$i < 32} {incr i 1} {
  53         for {set j 0} {$j < 2} {incr j 1} {
  54            gdb_test "set \$ev$i.v2_int32\[$j\] = 1" "" "set reg ev$i.v4si.f\[$j\]"
  55         }
  56 }
  57
  58 # Now execute some target code, so that GDB's register cache is flushed.
  59
  60 #gdb_test "next" "" ""
  61
  62 set endianness [get_endianness]
  63
  64 # And then read the E500 registers back, to see that
  65 # a) the register write above worked, and
  66 # b) the register read (below) also works.
  67
  68 if {$endianness == "big"} {
  69 set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x0, 0x1, 0x0, 0x1., v8_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."
  70 } else {
  71 set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x1, 0x0, 0x1, 0x0., v8_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."
  72 }
  73
  74 for {set i 0} {$i < 32} {incr i 1} {
  75         gdb_test "info reg ev$i" "ev$i.*$vector_register" "info reg ev$i"
  76 }
  77
  78 # Test wether the GPRs are updated accordingly. (GPRs are just the lower
  79 # 32 bits of the EV registers.)
  80
  81 set general_register "0x1\[ \t\]+1"
  82
  83 for {set i 0} {$i < 32} {incr i 1} {
  84         gdb_test "info reg r$i" "r$i.*$general_register" "info reg r$i"
  85 }
  86
  87 # Now redo the same tests, but using the print command.
  88
  89 if {$endianness == "big"} {
  90      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.."
  91 } else {
  92      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.."
  93 }
  94
  95 for {set i 0} {$i < 32} {incr i 1} {
  96         gdb_test "print \$ev$i" ".* = $decimal_vector" "print ev$i"
  97 }
  98
  99 for {set i 0} {$i < 32} {incr i 1} {
 100          set pattern$i ".*ev$i.*"
 101          append pattern$i $vector_register
 102 }
 103
 104 send_gdb "info vector\n"
 105 gdb_expect_list "info vector" ".*$gdb_prompt $" {
 106 [$pattern0]
 107 [$pattern1]
 108 [$pattern2]
 109 [$pattern3]
 110 [$pattern4]
 111 [$pattern5]
 112 [$pattern6]
 113 [$pattern7]
 114 [$pattern8]
 115 [$pattern9]
 116 [$pattern10]
 117 [$pattern11]
 118 [$pattern12]
 119 [$pattern13]
 120 [$pattern14]
 121 [$pattern15]
 122 [$pattern16]
 123 [$pattern17]
 124 [$pattern18]
 125 [$pattern19]
 126 [$pattern20]
 127 [$pattern21]
 128 [$pattern22]
 129 [$pattern23]
 130 [$pattern24]
 131 [$pattern25]
 132 [$pattern26]
 133 [$pattern27]
 134 [$pattern28]
 135 [$pattern29]
 136 [$pattern30]
 137 [$pattern31]
 138 }
 139
 140 # We must restart everything, because we have set important registers to
 141 # some unusual values.
 142
 143 gdb_exit
 144 gdb_start
 145 gdb_reinitialize_dir $srcdir/$subdir
 146 gdb_load ${binfile}
 147 if ![runto_main] then {
 148     return 0
 149 }
 150
 151 gdb_test "break vector_fun" \
 152  "Breakpoint 2 at.*e500-regs.c, line \[0-9\]+\\." \
 153  "set breakpoint at vector_fun"
 154
 155 # Actually it is nuch easier to see these results printed in hex.
 156 # gdb_test "set output-radix 16" \
 157 #   "Output radix now set to decimal 16, hex 10, octal 20." \
 158 #   "set output radix to hex"
 159
 160 gdb_test "continue" \
 161   "Breakpoint 2, vector_fun .a=.-2, -2., b=.1, 1.*e500-regs.c.*ev_create_s32 .2, 2.;" \
 162   "continue to vector_fun"
 163
 164 # Do a next over the assignment to vector 'a'.
 165 gdb_test "next" ".*b = \\(vector int\\) __ev_create_s32 \\(3, 3\\);" \
 166   "next (1)"
 167
 168 # Do a next over the assignment to vector 'b'.
 169 gdb_test "next" "c = __ev_and \\(a, b\\);" \
 170   "next (2)"
 171
 172 # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
 173 gdb_test "print/x a" \
 174   ".*= .0x2, 0x2." \
 175   "print vector parameter a"
 176
 177 gdb_test "print/x b" \
 178   ".*= .0x3, 0x3." \
 179   "print vector parameter b"
 180
 181 # If we do an 'up' now, and print 'x' and 'y' we should see the values they
 182 # have in main, not the values they have in vector_fun.
 183 gdb_test "up" ".1.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);" \
 184   "up to main"
 185
 186 gdb_test "print x" \
 187   ".*= .-2, -2." \
 188   "print vector x"
 189
 190 gdb_test "print y" \
 191   ".*= .1, 1." \
 192   "print vector y"
 193
 194 # now go back to vector_func and do a finish, to see if we can print the return
 195 # value correctly.
 196
 197 gdb_test "down" \
 198   ".0  vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*c = __ev_and \\(a, b\\);" \
 199   "down to vector_fun"
 200
 201 gdb_test "finish" \
 202   "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." \
 203   "finish returned correct value"
 204
 205
 206