135 lines · cpp
1//===- ASanStackFrameLayoutTest.cpp - Tests for ComputeASanStackFrameLayout===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8#include "llvm/Transforms/Utils/ASanStackFrameLayout.h"9#include "llvm/ADT/ArrayRef.h"10#include "gtest/gtest.h"11#include <sstream>12 13using namespace llvm;14 15static std::string16ShadowBytesToString(ArrayRef<uint8_t> ShadowBytes) {17 std::ostringstream os;18 for (size_t i = 0, n = ShadowBytes.size(); i < n; i++) {19 switch (ShadowBytes[i]) {20 case kAsanStackLeftRedzoneMagic: os << "L"; break;21 case kAsanStackRightRedzoneMagic: os << "R"; break;22 case kAsanStackMidRedzoneMagic: os << "M"; break;23 case kAsanStackUseAfterScopeMagic:24 os << "S";25 break;26 default: os << (unsigned)ShadowBytes[i];27 }28 }29 return os.str();30}31 32// Use macro to preserve line information in EXPECT_EQ output.33#define TEST_LAYOUT(V, Granularity, MinHeaderSize, ExpectedDescr, \34 ExpectedShadow, ExpectedShadowAfterScope) \35 { \36 SmallVector<ASanStackVariableDescription, 10> Vars = V; \37 ASanStackFrameLayout L = \38 ComputeASanStackFrameLayout(Vars, Granularity, MinHeaderSize); \39 EXPECT_STREQ(ExpectedDescr, \40 ComputeASanStackFrameDescription(Vars).c_str()); \41 EXPECT_EQ(ExpectedShadow, ShadowBytesToString(GetShadowBytes(Vars, L))); \42 EXPECT_EQ(ExpectedShadowAfterScope, \43 ShadowBytesToString(GetShadowBytesAfterScope(Vars, L))); \44 }45 46TEST(ASanStackFrameLayout, Test) {47#define VAR(name, size, lifetime, alignment, line) \48 ASanStackVariableDescription name##size##_##alignment = { \49 #name #size "_" #alignment, \50 size, \51 lifetime, \52 alignment, \53 0, \54 0, \55 line, \56 }57 58 VAR(a, 1, 0, 1, 0);59 VAR(p, 1, 0, 32, 15);60 VAR(p, 1, 0, 256, 2700);61 VAR(a, 2, 0, 1, 0);62 VAR(a, 3, 0, 1, 0);63 VAR(a, 4, 0, 1, 0);64 VAR(a, 7, 0, 1, 0);65 VAR(a, 8, 8, 1, 0);66 VAR(a, 9, 0, 1, 0);67 VAR(a, 16, 16, 1, 0);68 VAR(a, 41, 9, 1, 7);69 VAR(a, 105, 103, 1, 0);70 VAR(a, 200, 97, 1, 0);71 72 TEST_LAYOUT({a1_1}, 8, 16, "1 16 1 4 a1_1", "LL1R", "LL1R");73 TEST_LAYOUT({a1_1}, 16, 16, "1 16 1 4 a1_1", "L1R", "L1R");74 TEST_LAYOUT({a1_1}, 32, 32, "1 32 1 4 a1_1", "L1R", "L1R");75 TEST_LAYOUT({a1_1}, 64, 64, "1 64 1 4 a1_1", "L1R", "L1R");76 TEST_LAYOUT({p1_32}, 8, 32, "1 32 1 8 p1_32:15", "LLLL1RRR", "LLLL1RRR");77 TEST_LAYOUT({p1_32}, 8, 64, "1 64 1 8 p1_32:15", "LLLLLLLL1RRRRRRR",78 "LLLLLLLL1RRRRRRR");79 80 TEST_LAYOUT({a1_1}, 8, 32, "1 32 1 4 a1_1", "LLLL1RRR", "LLLL1RRR");81 TEST_LAYOUT({a2_1}, 8, 32, "1 32 2 4 a2_1", "LLLL2RRR", "LLLL2RRR");82 TEST_LAYOUT({a3_1}, 8, 32, "1 32 3 4 a3_1", "LLLL3RRR", "LLLL3RRR");83 TEST_LAYOUT({a4_1}, 8, 32, "1 32 4 4 a4_1", "LLLL4RRR", "LLLL4RRR");84 TEST_LAYOUT({a7_1}, 8, 32, "1 32 7 4 a7_1", "LLLL7RRR", "LLLL7RRR");85 TEST_LAYOUT({a8_1}, 8, 32, "1 32 8 4 a8_1", "LLLL0RRR", "LLLLSRRR");86 TEST_LAYOUT({a9_1}, 8, 32, "1 32 9 4 a9_1", "LLLL01RR", "LLLL01RR");87 TEST_LAYOUT({a16_1}, 8, 32, "1 32 16 5 a16_1", "LLLL00RR", "LLLLSSRR");88 TEST_LAYOUT({p1_256}, 8, 32, "1 256 1 11 p1_256:2700",89 "LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL1RRR",90 "LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL1RRR");91 TEST_LAYOUT({a41_1}, 8, 32, "1 32 41 7 a41_1:7", "LLLL000001RRRRRR",92 "LLLLSS0001RRRRRR");93 TEST_LAYOUT({a105_1}, 8, 32, "1 32 105 6 a105_1", "LLLL00000000000001RRRRRR",94 "LLLLSSSSSSSSSSSSS1RRRRRR");95 96 {97 SmallVector<ASanStackVariableDescription, 10> t = {a1_1, p1_256};98 TEST_LAYOUT(t, 8, 32, "2 256 1 11 p1_256:2700 272 1 4 a1_1",99 "LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL1M1R",100 "LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL1M1R");101 }102 103 {104 SmallVector<ASanStackVariableDescription, 10> t = {a1_1, a16_1, a41_1};105 TEST_LAYOUT(t, 8, 32, "3 32 1 4 a1_1 48 16 5 a16_1 80 41 7 a41_1:7",106 "LLLL1M00MM000001RRRR", "LLLL1MSSMMSS0001RRRR");107 }108 109 TEST_LAYOUT({a2_1}, 32, 32, "1 32 2 4 a2_1", "L2R", "L2R");110 TEST_LAYOUT({a9_1}, 32, 32, "1 32 9 4 a9_1", "L9R", "L9R");111 TEST_LAYOUT({a16_1}, 32, 32, "1 32 16 5 a16_1", "L16R", "LSR");112 TEST_LAYOUT({p1_256}, 32, 32, "1 256 1 11 p1_256:2700",113 "LLLLLLLL1R", "LLLLLLLL1R");114 TEST_LAYOUT({a41_1}, 32, 32, "1 32 41 7 a41_1:7", "L09R",115 "LS9R");116 TEST_LAYOUT({a105_1}, 32, 32, "1 32 105 6 a105_1", "L0009R",117 "LSSSSR");118 TEST_LAYOUT({a200_1}, 32, 32, "1 32 200 6 a200_1", "L0000008RR",119 "LSSSS008RR");120 121 {122 SmallVector<ASanStackVariableDescription, 10> t = {a1_1, p1_256};123 TEST_LAYOUT(t, 32, 32, "2 256 1 11 p1_256:2700 320 1 4 a1_1",124 "LLLLLLLL1M1R", "LLLLLLLL1M1R");125 }126 127 {128 SmallVector<ASanStackVariableDescription, 10> t = {a1_1, a16_1, a41_1};129 TEST_LAYOUT(t, 32, 32, "3 32 1 4 a1_1 96 16 5 a16_1 160 41 7 a41_1:7",130 "L1M16M09R", "L1MSMS9R");131 }132#undef VAR133#undef TEST_LAYOUT134}135