1 // Copyright 2016, VIXL authors
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are met:
6 //
7 // * Redistributions of source code must retain the above copyright notice,
8 // this list of conditions and the following disclaimer.
9 // * Redistributions in binary form must reproduce the above copyright notice,
10 // this list of conditions and the following disclaimer in the documentation
11 // and/or other materials provided with the distribution.
12 // * Neither the name of ARM Limited nor the names of its contributors may be
13 // used to endorse or promote products derived from this software without
14 // specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
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18 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27 #include "test-runner.h"
28
29 // TODO: Add unit tests for operands on AArch64
30 // TODO: It would be nice to have negative tests here too.
31
32 #ifdef VIXL_INCLUDE_TARGET_AARCH32
33 #include "aarch32/operands-aarch32.h"
34 #endif
35
36 #define TEST_AARCH32(name) TEST_(AARCH32_OPERANDS_##name)
37
38 namespace vixl {
39
40 #ifdef VIXL_INCLUDE_TARGET_AARCH32
TEST_AARCH32(operand_from)41 TEST_AARCH32(operand_from) {
42 // Test signed and unsigned values.
43 {
44 aarch32::Operand op = aarch32::Operand::From(42);
45 VIXL_CHECK(op.IsImmediate());
46 VIXL_CHECK(op.GetImmediate() == 42);
47 VIXL_CHECK(op.GetSignedImmediate() == 42);
48 }
49 {
50 aarch32::Operand op = aarch32::Operand::From(-42);
51 VIXL_CHECK(op.IsImmediate());
52 VIXL_CHECK(op.GetImmediate() == (~UINT32_C(42) + 1));
53 VIXL_CHECK(op.GetSignedImmediate() == -42);
54 }
55
56 // Test with 32-bit integer limits.
57 {
58 aarch32::Operand op = aarch32::Operand::From(-1);
59 VIXL_CHECK(op.IsImmediate());
60 VIXL_CHECK(op.GetImmediate() == UINT32_MAX);
61 VIXL_CHECK(op.GetSignedImmediate() == -1);
62 }
63 {
64 aarch32::Operand op = aarch32::Operand::From(UINT32_MAX);
65 VIXL_CHECK(op.IsImmediate());
66 VIXL_CHECK(op.GetImmediate() == UINT32_MAX);
67 VIXL_CHECK(op.GetSignedImmediate() == -1);
68 }
69 {
70 aarch32::Operand op = aarch32::Operand::From(INT32_MAX);
71 VIXL_CHECK(op.IsImmediate());
72 VIXL_CHECK(op.GetImmediate() == 0x7fffffffu);
73 VIXL_CHECK(op.GetSignedImmediate() == INT32_MAX);
74 }
75 {
76 aarch32::Operand op = aarch32::Operand::From(INT32_MIN);
77 VIXL_CHECK(op.IsImmediate());
78 VIXL_CHECK(op.GetImmediate() == 0x80000000u);
79 VIXL_CHECK(op.GetSignedImmediate() == INT32_MIN);
80 }
81
82 // Test with 64-bit signed numbers encodable in 32 bits.
83 {
84 aarch32::Operand op = aarch32::Operand::From(INT64_C(-1));
85 VIXL_CHECK(op.IsImmediate());
86 VIXL_CHECK(op.GetImmediate() == UINT32_MAX);
87 VIXL_CHECK(op.GetSignedImmediate() == -1);
88 }
89 {
90 aarch32::Operand op = aarch32::Operand::From(INT64_C(-42));
91 VIXL_CHECK(op.IsImmediate());
92 VIXL_CHECK(op.GetImmediate() == (~UINT32_C(42) + 1));
93 VIXL_CHECK(op.GetSignedImmediate() == -42);
94 }
95
96 #if defined(VIXL_HOST_POINTER_32)
97 // Test with a pointer that is known to fit into 32 bits.
98 {
99 int data = 42;
100 aarch32::Operand op = aarch32::Operand::From(&data);
101 VIXL_CHECK(op.IsImmediate());
102 VIXL_CHECK(op.GetImmediate() == reinterpret_cast<uintptr_t>(&data));
103 VIXL_CHECK(op.GetSignedImmediate() == reinterpret_cast<intptr_t>(&data));
104 }
105 {
106 int* data = new int;
107 *data = 42;
108 aarch32::Operand op = aarch32::Operand::From(data);
109 VIXL_CHECK(op.IsImmediate());
110 VIXL_CHECK(op.GetImmediate() == reinterpret_cast<uintptr_t>(data));
111 VIXL_CHECK(op.GetSignedImmediate() == reinterpret_cast<intptr_t>(data));
112 delete data;
113 }
114 #endif
115 }
116 #endif // VIXL_INCLUDE_TARGET_AARCH32
117
118 } // namespace vixl
119