1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; Test kernel hwasan instrumentation for alloca.
;
; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -S | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-android"
declare void @use32(ptr)
define void @test_alloca() sanitize_hwaddress {
; CHECK-LABEL: define void @test_alloca
; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; CHECK-NEXT: [[TMP0:%.*]] = call ptr @llvm.frameaddress.p0(i32 0)
; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[TMP0]] to i64
; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 [[TMP1]], 20
; CHECK-NEXT: [[HWASAN_STACK_BASE_TAG:%.*]] = xor i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT: [[HWASAN_UAR_TAG:%.*]] = lshr i64 [[TMP1]], 56
; CHECK-NEXT: [[X:%.*]] = alloca { i32, [12 x i8] }, align 16
; CHECK-NEXT: [[TMP3:%.*]] = xor i64 [[HWASAN_STACK_BASE_TAG]], 0
; CHECK-NEXT: [[TMP4:%.*]] = ptrtoint ptr [[X]] to i64
; CHECK-NEXT: [[TMP5:%.*]] = or i64 [[TMP4]], -72057594037927936
; CHECK-NEXT: [[TMP6:%.*]] = shl i64 [[TMP3]], 56
; CHECK-NEXT: [[TMP7:%.*]] = or i64 [[TMP6]], 72057594037927935
; CHECK-NEXT: [[TMP8:%.*]] = and i64 [[TMP5]], [[TMP7]]
; CHECK-NEXT: [[X_HWASAN:%.*]] = inttoptr i64 [[TMP8]] to ptr
; CHECK-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP3]] to i8
; CHECK-NEXT: [[TMP10:%.*]] = ptrtoint ptr [[X]] to i64
; CHECK-NEXT: [[TMP11:%.*]] = or i64 [[TMP10]], -72057594037927936
; CHECK-NEXT: [[TMP12:%.*]] = lshr i64 [[TMP11]], 4
; CHECK-NEXT: [[TMP13:%.*]] = inttoptr i64 [[TMP12]] to ptr
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[TMP13]], i8 [[TMP9]], i64 1, i1 false)
; CHECK-NEXT: call void @use32(ptr nonnull [[X_HWASAN]])
; CHECK-NEXT: [[TMP14:%.*]] = trunc i64 [[HWASAN_UAR_TAG]] to i8
; CHECK-NEXT: [[TMP15:%.*]] = ptrtoint ptr [[X]] to i64
; CHECK-NEXT: [[TMP16:%.*]] = or i64 [[TMP15]], -72057594037927936
; CHECK-NEXT: [[TMP17:%.*]] = lshr i64 [[TMP16]], 4
; CHECK-NEXT: [[TMP18:%.*]] = inttoptr i64 [[TMP17]] to ptr
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[TMP18]], i8 [[TMP14]], i64 1, i1 false)
; CHECK-NEXT: ret void
;
entry:
%x = alloca i32, align 4
call void @use32(ptr nonnull %x)
ret void
}
|
