tests/tcg/xtensa/test_windowed.S

   1 .include "macros.inc"
   2
   3 test_suite windowed
   4
   5 .altmacro
   6
   7 .macro reset_window start
   8     movi    a2, 0xff
   9     wsr     a2, windowstart
  10     rsync
  11     movi    a2, 0
  12     wsr     a2, windowbase
  13     rsync
  14     movi    a2, \start
  15     wsr     a2, windowstart
  16     rsync
  17 .endm
  18
  19 .macro overflow_test shift, window, probe_ok, probe_ex
  20     set_vector window_overflow_4, 0
  21     set_vector window_overflow_8, 0
  22     set_vector window_overflow_12, 0
  23
  24     movi    a2, 1 | (((1 << ((\window) / 4)) | 1) << ((\shift) / 4))
  25     wsr     a2, windowstart
  26     reset_ps
  27
  28     mov     a2, a\probe_ok
  29     set_vector window_overflow_\window, 10f
  30 1:
  31     mov     a2, a\probe_ex
  32     test_fail
  33 10:
  34     rsr     a2, epc1
  35     movi    a3, 1b
  36     assert  eq, a2, a3
  37     movi    a2, 2f
  38     wsr     a2, epc1
  39
  40     rsr     a2, windowbase
  41     movi    a3, (\shift) / 4
  42     assert  eq, a2, a3
  43     rsr     a2, ps
  44     movi    a3, 0x4001f
  45     assert  eq, a2, a3
  46     rfwo
  47     test_fail
  48 2:
  49     rsr     a2, windowbase
  50     assert  eqi, a2, 0
  51     rsr     a2, windowstart
  52     movi    a3, 1 | ((1 << ((\window) / 4)) << ((\shift) / 4))
  53     assert  eq, a2, a3
  54     rsr     a2, ps
  55     movi    a3, 0x4000f
  56     assert  eq, a2, a3
  57 .endm
  58
  59 .macro overflow_tests shift, window, probe
  60     .if \probe < 15
  61     overflow_test \shift, \window, %((\shift) - 1), \probe
  62     overflow_tests \shift, \window, %((\probe) + 1)
  63     .endif
  64 .endm
  65
  66 .macro all_overflow_tests
  67     .irp shift, 4, 8, 12
  68     .irp window, 4, 8, 12
  69     overflow_tests \shift, \window, \shift
  70     .endr
  71     .endr
  72 .endm
  73
  74 test overflow
  75     all_overflow_tests
  76 test_end
  77
  78
  79 .macro underflow_test window
  80     set_vector window_underflow_4, 0
  81     set_vector window_underflow_8, 0
  82     set_vector window_underflow_12, 0
  83
  84     set_vector window_underflow_\window, 10f
  85
  86     reset_window 1
  87     reset_ps
  88
  89     ssai    2
  90     movi    a2, 2f
  91     slli    a2, a2, 2
  92     movi    a3, (\window) / 4
  93     src     a0, a3, a2
  94 1:
  95     retw
  96     test_fail
  97 10:
  98     rsr     a2, epc1
  99     movi    a3, 1b
 100     assert  eq, a2, a3
 101     movi    a2, 2f
 102     wsr     a2, epc1
 103
 104     rsr     a2, ps
 105     movi    a3, 0x4001f
 106     assert  eq, a2, a3
 107     rsr     a2, windowbase
 108     assert  eqi, a2, 8 - ((\window) / 4)
 109     rsr     a2, windowstart
 110     assert  eqi, a2, 1
 111     rfwu
 112 2:
 113     rsr     a2, ps
 114     movi    a3, 0x4000f
 115     assert  eq, a2, a3
 116     rsr     a2, windowbase
 117     assert  eqi, a2, 0
 118     rsr     a2, windowstart
 119     assert  bsi, a2, 0
 120     assert  bsi, a2, 8 - ((\window) / 4)
 121 .endm
 122
 123 test underflow
 124     set_vector window_overflow_4, 0
 125     set_vector window_overflow_8, 0
 126     set_vector window_overflow_12, 0
 127
 128     underflow_test 4
 129     underflow_test 8
 130     underflow_test 12
 131 test_end
 132
 133
 134 .macro retw_test window
 135     reset_window %(1 | (1 << (8 - (\window) / 4)))
 136     reset_ps
 137
 138     ssai    2
 139     movi    a2, 1f
 140     slli    a2, a2, 2
 141     movi    a3, (\window) / 4
 142     src     a0, a3, a2
 143     retw
 144     test_fail
 145 1:
 146     rsr     a2, ps
 147     movi    a3, 0x4000f
 148     assert  eq, a2, a3
 149     rsr     a2, windowbase
 150     assert  eqi, a2, 8 - ((\window) / 4)
 151     rsr     a2, windowstart
 152     assert  bci, a2, 0
 153     assert  bsi, a2, 8 - ((\window) / 4)
 154 .endm
 155
 156 test retw
 157     set_vector window_underflow_4, 0
 158     set_vector window_underflow_8, 0
 159     set_vector window_underflow_12, 0
 160
 161     retw_test 4
 162     retw_test 8
 163     retw_test 12
 164 test_end
 165
 166 test movsp
 167     set_vector kernel, 2f
 168
 169     reset_window 1
 170     reset_ps
 171 1:
 172     movsp   a2, a3
 173     test_fail
 174 2:
 175     rsr     a2, exccause
 176     assert  eqi, a2, 5
 177     rsr     a2, epc1
 178     movi    a3, 1b
 179     assert  eq, a2, a3
 180
 181     set_vector kernel, 0
 182
 183     reset_window 0x81
 184     reset_ps
 185
 186     movsp   a2, a3
 187 test_end
 188
 189 test rotw
 190     reset_window 0x4b
 191     reset_ps
 192
 193     movi    a3, 0x10
 194
 195     rotw    1
 196     rsr     a2, windowbase
 197     assert  eqi, a2, 1
 198     movi    a3, 0x11
 199     movi    a7, 0x12
 200
 201     rotw    2
 202     rsr     a2, windowbase
 203     assert  eqi, a2, 3
 204     movi    a3, 0x13
 205     movi    a7, 0x14
 206     movi    a11, 0x15
 207
 208     rotw    3
 209     rsr     a2, windowbase
 210     assert  eqi, a2, 6
 211     movi    a3, 0x16
 212     movi    a7, 0x17
 213
 214     movi    a2, 0x44
 215     wsr     a2, windowstart
 216     rsync
 217
 218     movi    a2, 0x10
 219     assert  eq, a2, a11
 220     movi    a11, 0x18
 221     movi    a2, 0x11
 222     assert  eq, a2, a15
 223     movi    a15, 0x19
 224
 225     rotw    4
 226     movi    a2, 0x12
 227     assert  eq, a2, a3
 228     movi    a2, 0x13
 229     assert  eq, a2, a7
 230     movi    a2, 0x14
 231     assert  eq, a2, a11
 232     movi    a2, 0x15
 233     assert  eq, a2, a15
 234
 235     movi    a2, 0x5
 236     wsr     a2, windowstart
 237     rsync
 238
 239     rotw    -2
 240     movi    a2, 0x18
 241     assert  eq, a2, a3
 242     movi    a2, 0x19
 243     assert  eq, a2, a7
 244 test_end
 245
 246 .macro callw_test window
 247     call\window 2f
 248 1:
 249     test_fail
 250     .align  4
 251 2:
 252     rsr     a2, windowbase
 253     assert  eqi, a2, 0
 254     rsr     a2, ps
 255     movi    a3, 0x4000f | ((\window) << 14)
 256     assert  eq, a2, a3
 257     movi    a2, 1b
 258     slli    a2, a2, 2
 259     ssai    2
 260     movi    a3, (\window) / 4
 261     src     a2, a3, a2
 262     assert  eq, a2, a\window
 263 .endm
 264
 265 test callw
 266     reset_window 0x1
 267     reset_ps
 268
 269     callw_test 4
 270     callw_test 8
 271     callw_test 12
 272 test_end
 273
 274
 275 .macro entry_test window
 276     reset_window 0x1
 277     reset_ps
 278     movi    a2, 0x4000f | ((\window) << 14)
 279     wsr     a2, ps
 280     isync
 281     movi    a3, 0x12345678
 282     j       1f
 283     .align  4
 284 1:
 285     entry   a3, 0x5678
 286     movi    a2, 0x12340000
 287     assert  eq, a2, a3
 288     rsr     a2, windowbase
 289     assert  eqi, a2, (\window) / 4
 290     rsr     a2, windowstart
 291     movi    a3, 1 | (1 << ((\window) / 4))
 292     assert  eq, a2, a3
 293     rotw    -(\window) / 4
 294 .endm
 295
 296 test entry
 297     entry_test 4
 298     entry_test 8
 299     entry_test 12
 300 test_end
 301
 302 test_suite_end