aboutsummaryrefslogtreecommitdiff
path: root/isa/rv32ui/lwu.S
blob: 818a25706cea991dec3b8f55a49b879a5484befd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
# See LICENSE for license details.

#*****************************************************************************
# lwu.S
#-----------------------------------------------------------------------------
#
# Test lwu instruction.
#

#include "riscv_test.h"
#include "test_macros.h"

RVTEST_RV32U
RVTEST_CODE_BEGIN

  #-------------------------------------------------------------
  # Basic tests
  #-------------------------------------------------------------

  TEST_LD_OP( 2, lwu, 0x00ff00ff, 0,  tdat );
  TEST_LD_OP( 3, lwu, 0xff00ff00, 4,  tdat );
  TEST_LD_OP( 4, lwu, 0x0ff00ff0, 8,  tdat );
  TEST_LD_OP( 5, lwu, 0xf00ff00f, 12, tdat );

  # Test with negative offset

  TEST_LD_OP( 6, lwu, 0x00ff00ff, -12, tdat4 );
  TEST_LD_OP( 7, lwu, 0xff00ff00, -8,  tdat4 );
  TEST_LD_OP( 8, lwu, 0x0ff00ff0, -4,  tdat4 );
  TEST_LD_OP( 9, lwu, 0xf00ff00f, 0,   tdat4 );

  # Test with a negative base

  TEST_CASE( 10, x3, 0x00ff00ff, \
    la  x1, tdat; \
    addi x1, x1, -32; \
    lwu x3, 32(x1); \
  )

  # Test with unaligned base

  TEST_CASE( 11, x3, 0xff00ff00, \
    la  x1, tdat; \
    addi x1, x1, -3; \
    lwu x3, 7(x1); \
  )

  #-------------------------------------------------------------
  # Bypassing tests
  #-------------------------------------------------------------

  TEST_LD_DEST_BYPASS( 12, 0, lwu, 0x0ff00ff0, 4, tdat2 );
  TEST_LD_DEST_BYPASS( 13, 1, lwu, 0xf00ff00f, 4, tdat3 );
  TEST_LD_DEST_BYPASS( 14, 2, lwu, 0xff00ff00, 4, tdat1 );

  TEST_LD_SRC1_BYPASS( 15, 0, lwu, 0x0ff00ff0, 4, tdat2 );
  TEST_LD_SRC1_BYPASS( 16, 1, lwu, 0xf00ff00f, 4, tdat3 );
  TEST_LD_SRC1_BYPASS( 17, 2, lwu, 0xff00ff00, 4, tdat1 );

  #-------------------------------------------------------------
  # Test write-after-write hazard
  #-------------------------------------------------------------

  TEST_CASE( 18, x2, 2, \
    la  x3, tdat; \
    lwu x2, 0(x3); \
    li  x2, 2; \
  )

  TEST_CASE( 19, x2, 2, \
    la  x3, tdat; \
    lwu x2, 0(x3); \
    nop; \
    li  x2, 2; \
  )

  TEST_PASSFAIL

RVTEST_CODE_END

  .data
RVTEST_DATA_BEGIN

  TEST_DATA

tdat:
tdat1:  .word 0x00ff00ff
tdat2:  .word 0xff00ff00
tdat3:  .word 0x0ff00ff0
tdat4:  .word 0xf00ff00f

RVTEST_DATA_END