1 //===-- TestArmv7Disassembly.cpp ------------------------------------------===//
2
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "gtest/gtest.h"
11
12 #include "lldb/Core/Address.h"
13 #include "lldb/Core/Disassembler.h"
14 #include "lldb/Utility/ArchSpec.h"
15 #include "lldb/Target/ExecutionContext.h"
16
17 #include "Plugins/Disassembler/LLVMC/DisassemblerLLVMC.h"
18 #include "llvm/Support/TargetSelect.h"
19
20 using namespace lldb;
21 using namespace lldb_private;
22
23 class TestArmv7Disassembly : public testing::Test {
24 public:
25 static void SetUpTestCase();
26 static void TearDownTestCase();
27
28 // virtual void SetUp() override { }
29 // virtual void TearDown() override { }
30
31 protected:
32 };
33
SetUpTestCase()34 void TestArmv7Disassembly::SetUpTestCase() {
35 llvm::InitializeAllTargets();
36 llvm::InitializeAllAsmPrinters();
37 llvm::InitializeAllTargetMCs();
38 llvm::InitializeAllDisassemblers();
39 DisassemblerLLVMC::Initialize();
40 }
41
TearDownTestCase()42 void TestArmv7Disassembly::TearDownTestCase() {
43 DisassemblerLLVMC::Terminate();
44 }
45
TEST_F(TestArmv7Disassembly,TestCortexFPDisass)46 TEST_F(TestArmv7Disassembly, TestCortexFPDisass) {
47 ArchSpec arch("armv7em--");
48
49 const unsigned num_of_instructions = 3;
50 uint8_t data[] = {
51 0x00, 0xee, 0x10, 0x2a, // 0xee002a10 : vmov s0, r2
52 0xb8, 0xee, 0xc0, 0x0b, // 0xeeb80bc0 : vcvt.f64.s32 d0, s0
53 0xb6, 0xee, 0x00, 0x0a, // 0xeeb60a00 : vmov.f32 s0, #5.000000e-01
54 };
55
56 // these can be disassembled by hand with llvm-mc, e.g.
57 //
58 // 0x00, 0xee, 0x10, 0x2a, // 0xee002a10 : vmov s0, r2
59 //
60 // echo 0x00 0xee 0x10 0x2a | llvm-mc -arch thumb -disassemble -mattr=+fp-armv8
61 // vmov s0, r2
62
63 DisassemblerSP disass_sp;
64 Address start_addr(0x100);
65 disass_sp = Disassembler::DisassembleBytes(arch, nullptr, nullptr, start_addr,
66 &data, sizeof (data), num_of_instructions, false);
67
68 // If we failed to get a disassembler, we can assume it is because
69 // the llvm we linked against was not built with the ARM target,
70 // and we should skip these tests without marking anything as failing.
71
72 if (disass_sp) {
73 const InstructionList inst_list (disass_sp->GetInstructionList());
74 EXPECT_EQ (num_of_instructions, inst_list.GetSize());
75
76 InstructionSP inst_sp;
77 const char *mnemonic;
78 ExecutionContext exe_ctx (nullptr, nullptr, nullptr);
79 inst_sp = inst_list.GetInstructionAtIndex (0);
80 mnemonic = inst_sp->GetMnemonic(&exe_ctx);
81 ASSERT_STREQ ("vmov", mnemonic);
82
83 inst_sp = inst_list.GetInstructionAtIndex (1);
84 mnemonic = inst_sp->GetMnemonic(&exe_ctx);
85 ASSERT_STREQ ("vcvt.f64.s32", mnemonic);
86
87 inst_sp = inst_list.GetInstructionAtIndex (2);
88 mnemonic = inst_sp->GetMnemonic(&exe_ctx);
89 ASSERT_STREQ ("vmov.f32", mnemonic);
90 }
91 }
92