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
20using namespace lldb;
21using namespace lldb_private;
22
23namespace {
24class TestArmv7Disassembly : public testing::Test {
25public:
26 static void SetUpTestCase();
27 static void TearDownTestCase();
28
29 // virtual void SetUp() override { }
30 // virtual void TearDown() override { }
31
32protected:
33};
34
35void TestArmv7Disassembly::SetUpTestCase() {
36 llvm::InitializeAllTargets();
37 llvm::InitializeAllAsmPrinters();
38 llvm::InitializeAllTargetMCs();
39 llvm::InitializeAllDisassemblers();
40 DisassemblerLLVMC::Initialize();
41}
42
43void TestArmv7Disassembly::TearDownTestCase() {
44 DisassemblerLLVMC::Terminate();
45}
46} // namespace
47
48TEST_F(TestArmv7Disassembly, TestCortexFPDisass) {
49 ArchSpec arch("armv7em--");
50
51 const unsigned num_of_instructions = 3;
52 uint8_t data[] = {
53 0x00, 0xee, 0x10, 0x2a, // 0xee002a10 : vmov s0, r2
54 0xb8, 0xee, 0xc0, 0x0b, // 0xeeb80bc0 : vcvt.f64.s32 d0, s0
55 0xb6, 0xee, 0x00, 0x0a, // 0xeeb60a00 : vmov.f32 s0, #5.000000e-01
56 };
57
58 // these can be disassembled by hand with llvm-mc, e.g.
59 //
60 // 0x00, 0xee, 0x10, 0x2a, // 0xee002a10 : vmov s0, r2
61 //
62 // echo 0x00 0xee 0x10 0x2a | llvm-mc -arch thumb -disassemble -mattr=+fp-armv8
63 // vmov s0, r2
64
65 DisassemblerSP disass_sp;
66 Address start_addr(0x100);
67 disass_sp = Disassembler::DisassembleBytes(arch, plugin_name: nullptr, flavor: nullptr, start: start_addr,
68 bytes: &data, length: sizeof (data), max_num_instructions: num_of_instructions, data_from_file: false);
69
70 // If we failed to get a disassembler, we can assume it is because
71 // the llvm we linked against was not built with the ARM target,
72 // and we should skip these tests without marking anything as failing.
73
74 if (disass_sp) {
75 const InstructionList inst_list (disass_sp->GetInstructionList());
76 EXPECT_EQ (num_of_instructions, inst_list.GetSize());
77
78 InstructionSP inst_sp;
79 const char *mnemonic;
80 ExecutionContext exe_ctx (nullptr, nullptr, nullptr);
81 inst_sp = inst_list.GetInstructionAtIndex (idx: 0);
82 mnemonic = inst_sp->GetMnemonic(exe_ctx: &exe_ctx);
83 ASSERT_STREQ ("vmov", mnemonic);
84
85 inst_sp = inst_list.GetInstructionAtIndex (idx: 1);
86 mnemonic = inst_sp->GetMnemonic(exe_ctx: &exe_ctx);
87 ASSERT_STREQ ("vcvt.f64.s32", mnemonic);
88
89 inst_sp = inst_list.GetInstructionAtIndex (idx: 2);
90 mnemonic = inst_sp->GetMnemonic(exe_ctx: &exe_ctx);
91 ASSERT_STREQ ("vmov.f32", mnemonic);
92 }
93}
94

source code of lldb/unittests/Disassembler/ARM/TestArmv7Disassembly.cpp