1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-01 13:11:39 +01:00
Christudasan Devadasan 34435ad5ca Added address-space mangling for stack related intrinsics
Modified the following 3 intrinsics:
int_addressofreturnaddress,
int_frameaddress & int_sponentry.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D64561

llvm-svn: 366679
2019-07-22 12:42:48 +00:00

31 lines
1.1 KiB
LLVM

; Test kernel hwasan instrumentation for alloca.
;
; RUN: opt < %s -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(i32*)
define void @test_alloca() sanitize_hwaddress {
; CHECK-LABEL: @test_alloca(
; CHECK: %[[FP:[^ ]*]] = call i8* @llvm.frameaddress.p0i8(i32 0)
; CHECK: %[[A:[^ ]*]] = ptrtoint i8* %[[FP]] to i64
; CHECK: %[[B:[^ ]*]] = lshr i64 %[[A]], 20
; CHECK: %[[BASE_TAG:[^ ]*]] = xor i64 %[[A]], %[[B]]
; CHECK: %[[X:[^ ]*]] = alloca { i32, [12 x i8] }, align 16
; CHECK: %[[X_BC:[^ ]*]] = bitcast { i32, [12 x i8] }* %[[X]] to i32*
; CHECK: %[[X_TAG:[^ ]*]] = xor i64 %[[BASE_TAG]], 0
; CHECK: %[[X1:[^ ]*]] = ptrtoint i32* %[[X_BC]] to i64
; CHECK: %[[C:[^ ]*]] = shl i64 %[[X_TAG]], 56
; CHECK: %[[D:[^ ]*]] = or i64 %[[C]], 72057594037927935
; CHECK: %[[E:[^ ]*]] = and i64 %[[X1]], %[[D]]
; CHECK: %[[X_HWASAN:[^ ]*]] = inttoptr i64 %[[E]] to i32*
entry:
%x = alloca i32, align 4
call void @use32(i32* nonnull %x)
ret void
}