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Issue 2194853003: Subzero: Implemented codegen for poisoning and unpoisoning stack redzones (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Added missing REQUIRES directive Created 4 years, 4 months ago
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1 ; Test for insertion of redzones around local variables 1 ; Test for insertion of redzones around local variables
2 2
3 ; REQUIRES: allow_dump 3 ; REQUIRES: allow_dump
4 4
5 ; RUN: %p2i -i %s --args -verbose=inst -threads=0 -fsanitize-address \ 5 ; RUN: %p2i -i %s --args -verbose=inst -threads=0 -fsanitize-address \
6 ; RUN: | FileCheck --check-prefix=DUMP %s 6 ; RUN: -allow-externally-defined-symbols | FileCheck --check-prefix=DUMP %s
7 7
8 ; Function with local variables to be instrumented 8 ; Function with local variables to be instrumented
9 define internal void @func() { 9 define internal void @func() {
10 %local1 = alloca i8, i32 4, align 4 10 %local1 = alloca i8, i32 4, align 4
11 %local2 = alloca i8, i32 32, align 1 11 %local2 = alloca i8, i32 32, align 1
12 %local3 = alloca i8, i32 13, align 2 12 %local3 = alloca i8, i32 13, align 2
13 %local4 = alloca i8, i32 75, align 4 13 %local4 = alloca i8, i32 75, align 4
14 %local5 = alloca i8, i32 64, align 8 14 %local5 = alloca i8, i32 64, align 8
15 %i1 = ptrtoint i8* %local1 to i32
16 %i2 = ptrtoint i8* %local2 to i32
17 %i3 = ptrtoint i8* %local3 to i32
18 %i4 = ptrtoint i8* %local4 to i32
19 %i5 = ptrtoint i8* %local5 to i32
20 call void @foo(i32 %i1)
21 call void @foo(i32 %i2)
22 call void @foo(i32 %i3)
23 call void @foo(i32 %i4)
24 call void @foo(i32 %i5)
15 ret void 25 ret void
16 } 26 }
17 27
28 declare external void @foo(i32)
29
18 ; DUMP-LABEL: ================ Instrumented CFG ================ 30 ; DUMP-LABEL: ================ Instrumented CFG ================
19 ; DUMP-NEXT: define internal void @func() { 31 ; DUMP-NEXT: define internal void @func() {
20 ; DUMP-NEXT: __0: 32 ; DUMP-NEXT: __0:
21 ; DUMP-NEXT: %local1 = alloca i8, i32 64, align 8 33 ; DUMP-NEXT: %__$rz0 = alloca i8, i32 32, align 8
22 ; DUMP-NEXT: %local2 = alloca i8, i32 64, align 8 34 ; DUMP-NEXT: %local1 = alloca i8, i32 64, align 8
23 ; DUMP-NEXT: %local3 = alloca i8, i32 64, align 8 35 ; DUMP-NEXT: %local2 = alloca i8, i32 64, align 8
24 ; DUMP-NEXT: %local4 = alloca i8, i32 128, align 8 36 ; DUMP-NEXT: %local3 = alloca i8, i32 64, align 8
25 ; DUMP-NEXT: %local5 = alloca i8, i32 96, align 8 37 ; DUMP-NEXT: %local4 = alloca i8, i32 128, align 8
26 ; DUMP-NEXT: %__$rz[[RZ0:[0-9]+]] = alloca i8, i32 32, align 8 38 ; DUMP-NEXT: %local5 = alloca i8, i32 96, align 8
27 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz[[RZ0]], i32 32, i32 -1) 39 ; DUMP-NEXT: %shadowIndex = lshr i32 %__$rz0, 3
28 ; DUMP-NEXT: %__$rz[[RZ1:[0-9]+]] = add i32 %local1, 4 40 ; DUMP-NEXT: %firstShadowLoc = add i32 %shadowIndex, 536870912
29 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz[[RZ1]], i32 60, i32 -1) 41 ; DUMP-NEXT: %__8 = add i32 %firstShadowLoc, 0
30 ; DUMP-NEXT: %__$rz[[RZ2:[0-9]+]] = add i32 %local2, 32 42 ; DUMP-NEXT: store i32 -1, i32* %__8, align 1
31 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz[[RZ2]], i32 32, i32 -1) 43 ; DUMP-NEXT: %__9 = add i32 %firstShadowLoc, 4
32 ; DUMP-NEXT: %__$rz[[RZ3:[0-9]+]] = add i32 %local3, 13 44 ; DUMP-NEXT: store i32 -252, i32* %__9, align 1
33 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz[[RZ3]], i32 51, i32 -1) 45 ; DUMP-NEXT: %__10 = add i32 %firstShadowLoc, 8
34 ; DUMP-NEXT: %__$rz[[RZ4:[0-9]+]] = add i32 %local4, 75 46 ; DUMP-NEXT: store i32 -1, i32* %__10, align 1
35 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz[[RZ4]], i32 53, i32 -1) 47 ; DUMP-NEXT: %__11 = add i32 %firstShadowLoc, 16
36 ; DUMP-NEXT: %__$rz[[RZ5:[0-9]+]] = add i32 %local5, 64 48 ; DUMP-NEXT: store i32 -1, i32* %__11, align 1
37 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz[[RZ5]], i32 32, i32 -1) 49 ; DUMP-NEXT: %__12 = add i32 %firstShadowLoc, 20
38 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz[[RZ1]], i32 60) 50 ; DUMP-NEXT: store i32 -64256, i32* %__12, align 1
39 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz[[RZ2]], i32 32) 51 ; DUMP-NEXT: %__13 = add i32 %firstShadowLoc, 24
40 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz[[RZ3]], i32 51) 52 ; DUMP-NEXT: store i32 -1, i32* %__13, align 1
41 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz[[RZ4]], i32 53) 53 ; DUMP-NEXT: %__14 = add i32 %firstShadowLoc, 36
42 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz[[RZ5]], i32 32) 54 ; DUMP-NEXT: store i32 -64768, i32* %__14, align 1
43 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz[[RZ0]], i32 32) 55 ; DUMP-NEXT: %__15 = add i32 %firstShadowLoc, 40
44 ; DUMP-NEXT: ret void 56 ; DUMP-NEXT: store i32 -1, i32* %__15, align 1
57 ; DUMP-NEXT: %__16 = add i32 %firstShadowLoc, 52
58 ; DUMP-NEXT: store i32 -1, i32* %__16, align 1
59 ; DUMP-NEXT: call void @foo(i32 %local1)
60 ; DUMP-NEXT: call void @foo(i32 %local2)
61 ; DUMP-NEXT: call void @foo(i32 %local3)
62 ; DUMP-NEXT: call void @foo(i32 %local4)
63 ; DUMP-NEXT: call void @foo(i32 %local5)
64 ; DUMP-NEXT: store i32 0, i32* %__8, align 1
65 ; DUMP-NEXT: store i32 0, i32* %__9, align 1
66 ; DUMP-NEXT: store i32 0, i32* %__10, align 1
67 ; DUMP-NEXT: store i32 0, i32* %__11, align 1
68 ; DUMP-NEXT: store i32 0, i32* %__12, align 1
69 ; DUMP-NEXT: store i32 0, i32* %__13, align 1
70 ; DUMP-NEXT: store i32 0, i32* %__14, align 1
71 ; DUMP-NEXT: store i32 0, i32* %__15, align 1
72 ; DUMP-NEXT: store i32 0, i32* %__16, align 1
73 ; DUMP-NEXT: ret void
45 ; DUMP-NEXT: } 74 ; DUMP-NEXT: }
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