RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-19 19:12:56 +02:00
Code Issues Projects Releases Wiki Activity

[cfi-verify] Add an interesting unit test where undef search length changes result.

Browse Source 
Add an interesting unit test, found by changing --search-length-undef from the default. Program handles it correctly but good for ensuring correctness on further changes :)

Reviewers: pcc

Subscribers: mgorny, llvm-commits, kcc, vlad.tsyrklevich

Differential Revision: https://reviews.llvm.org/D38658

llvm-svn: 317355
This commit is contained in:
Mitch Phillips 2017-11-03 20:00:05 +00:00
parent 20c4e84e55
commit 7edc824f4f
1 changed files with 53 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
unittests/tools/llvm-cfi-verify/FileAnalysis.cpp
View File

@ -650,7 +650,60 @@ TEST_F(BasicFileAnalysisTest, CFIProtectionComplexExample) {
0x0f, 0x0b, // 22: ud2
},
0xDEADBEEF);
uint64_t PrevSearchLengthForUndef = SearchLengthForUndef;
SearchLengthForUndef = 5;
EXPECT_FALSE(Analysis.isIndirectInstructionCFIProtected(0xDEADBEEF + 9));
SearchLengthForUndef = PrevSearchLengthForUndef;
}
TEST_F(BasicFileAnalysisTest, UndefSearchLengthOneTest) {
Analysis.parseSectionContents(
{
0x77, 0x0d, // 0x688118: ja 0x688127 [+12]
0x48, 0x89, 0xdf, // 0x68811a: mov %rbx, %rdi
0xff, 0xd0, // 0x68811d: callq *%rax
0x48, 0x89, 0xdf, // 0x68811f: mov %rbx, %rdi
0xe8, 0x09, 0x00, 0x00, 0x00, // 0x688122: callq 0x688130
0x0f, 0x0b, // 0x688127: ud2
},
0x688118);
uint64_t PrevSearchLengthForUndef = SearchLengthForUndef;
SearchLengthForUndef = 1;
EXPECT_TRUE(Analysis.isIndirectInstructionCFIProtected(0x68811d));
SearchLengthForUndef = PrevSearchLengthForUndef;
}
TEST_F(BasicFileAnalysisTest, UndefSearchLengthOneTestFarAway) {
Analysis.parseSectionContents(
{
0x74, 0x73, // 0x7759eb: je 0x775a60
0xe9, 0x1c, 0x04, 0x00, 0x00, 0x00, // 0x7759ed: jmpq 0x775e0e
},
0x7759eb);
Analysis.parseSectionContents(
{
0x0f, 0x85, 0xb2, 0x03, 0x00, 0x00, // 0x775a56: jne 0x775e0e
0x48, 0x83, 0xc3, 0xf4, // 0x775a5c: add $0xfffffffffffffff4,%rbx
0x48, 0x8b, 0x7c, 0x24, 0x10, // 0x775a60: mov 0x10(%rsp),%rdi
0x48, 0x89, 0xde, // 0x775a65: mov %rbx,%rsi
0xff, 0xd1, // 0x775a68: callq *%rcx
},
0x775a56);
Analysis.parseSectionContents(
{
0x0f, 0x0b, // 0x775e0e: ud2
},
0x775e0e);
uint64_t PrevSearchLengthForUndef = SearchLengthForUndef;
SearchLengthForUndef = 1;
EXPECT_FALSE(Analysis.isIndirectInstructionCFIProtected(0x775a68));
SearchLengthForUndef = 2;
EXPECT_TRUE(Analysis.isIndirectInstructionCFIProtected(0x775a68));
SearchLengthForUndef = 3;
EXPECT_TRUE(Analysis.isIndirectInstructionCFIProtected(0x775a68));
SearchLengthForUndef = PrevSearchLengthForUndef;
}
} // anonymous namespace