45f6d5522f
Previously on x86_64: +--------------------+ 0x800000000000 (top of memory) | application memory | +--------------------+ 0x700000008000 (kAppAddr) | | | unused | | | +--------------------+ 0x300000000000 (kUnusedAddr) | origin | +--------------------+ 0x200000008000 (kOriginAddr) | unused | +--------------------+ 0x200000000000 | shadow memory | +--------------------+ 0x100000008000 (kShadowAddr) | unused | +--------------------+ 0x000000010000 | reserved by kernel | +--------------------+ 0x000000000000 MEM_TO_SHADOW(mem) = mem & ~0x600000000000 SHADOW_TO_ORIGIN(shadow) = kOriginAddr - kShadowAddr + shadow Now for x86_64: +--------------------+ 0x800000000000 (top of memory) | application 3 | +--------------------+ 0x700000000000 | invalid | +--------------------+ 0x610000000000 | origin 1 | +--------------------+ 0x600000000000 | application 2 | +--------------------+ 0x510000000000 | shadow 1 | +--------------------+ 0x500000000000 | invalid | +--------------------+ 0x400000000000 | origin 3 | +--------------------+ 0x300000000000 | shadow 3 | +--------------------+ 0x200000000000 | origin 2 | +--------------------+ 0x110000000000 | invalid | +--------------------+ 0x100000000000 | shadow 2 | +--------------------+ 0x010000000000 | application 1 | +--------------------+ 0x000000000000 MEM_TO_SHADOW(mem) = mem ^ 0x500000000000 SHADOW_TO_ORIGIN(shadow) = shadow + 0x100000000000 Reviewed By: stephan.yichao.zhao, gbalats Differential Revision: https://reviews.llvm.org/D104896
104 lines
4.0 KiB
LLVM
104 lines
4.0 KiB
LLVM
; RUN: opt < %s -dfsan -dfsan-combine-pointer-labels-on-store=1 -S | FileCheck %s --check-prefixes=CHECK,COMBINE_PTR_LABEL
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; RUN: opt < %s -dfsan -dfsan-combine-pointer-labels-on-store=0 -S | FileCheck %s --check-prefixes=CHECK,NO_COMBINE_PTR_LABEL
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
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; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
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define void @store0({} %v, {}* %p) {
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; CHECK-LABEL: @store0.dfsan
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; CHECK: store {} %v, {}* %p
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; CHECK-NOT: store
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; CHECK: ret void
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store {} %v, {}* %p
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ret void
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}
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define void @store8(i8 %v, i8* %p) {
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; CHECK-LABEL: @store8.dfsan
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; CHECK: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: or i[[#SBITS]]
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; CHECK: ptrtoint i8* {{.*}} i64
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; CHECK-NEXT: xor i64
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; CHECK-NEXT: inttoptr i64 {{.*}} i[[#SBITS]]*
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: store i8 %v, i8* %p
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; CHECK-NEXT: ret void
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store i8 %v, i8* %p
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ret void
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}
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define void @store16(i16 %v, i16* %p) {
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; CHECK-LABEL: @store16.dfsan
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; CHECK: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: or i[[#SBITS]]
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; CHECK: ptrtoint i16* {{.*}} i64
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; CHECK-NEXT: xor i64
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; CHECK-NEXT: inttoptr i64 {{.*}} i[[#SBITS]]*
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: store i16 %v, i16* %p
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; CHECK-NEXT: ret void
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store i16 %v, i16* %p
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ret void
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}
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define void @store32(i32 %v, i32* %p) {
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; CHECK-LABEL: @store32.dfsan
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; CHECK: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: or i[[#SBITS]]
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; CHECK: ptrtoint i32* {{.*}} i64
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; CHECK-NEXT: xor i64
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; CHECK-NEXT: inttoptr i64 {{.*}} i[[#SBITS]]*
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: getelementptr i[[#SBITS]], i[[#SBITS]]*
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; CHECK-NEXT: store i[[#SBITS]]
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; CHECK-NEXT: store i32 %v, i32* %p
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; CHECK-NEXT: ret void
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store i32 %v, i32* %p
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ret void
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}
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define void @store64(i64 %v, i64* %p) {
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; CHECK-LABEL: @store64.dfsan
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; CHECK: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: load i[[#SBITS]], i[[#SBITS]]* {{.*}} @__dfsan_arg_tls
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; COMBINE_PTR_LABEL: or i[[#SBITS]]
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; CHECK: ptrtoint i64* {{.*}} i64
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; CHECK-NEXT: xor i64
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; CHECK-NEXT: inttoptr i64 {{.*}} i[[#SBITS]]*
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; CHECK-COUNT-8: insertelement {{.*}} i[[#SBITS]]
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; CHECK-NEXT: bitcast i[[#SBITS]]* {{.*}} <8 x i[[#SBITS]]>*
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; CHECK-NEXT: getelementptr <8 x i[[#SBITS]]>
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; CHECK-NEXT: store <8 x i[[#SBITS]]>
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; CHECK-NEXT: store i64 %v, i64* %p
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; CHECK-NEXT: ret void
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store i64 %v, i64* %p
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ret void
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}
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define void @store_zero(i32* %p) {
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; CHECK-LABEL: @store_zero.dfsan
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; NO_COMBINE_PTR_LABEL: bitcast i[[#SBITS]]* {{.*}} to i[[#mul(4, SBITS)]]*
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; NO_COMBINE_PTR_LABEL: store i[[#mul(4, SBITS)]] 0, i[[#mul(4, SBITS)]]* {{.*}}
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store i32 0, i32* %p
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ret void
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}
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