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 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
|
; RUN: opt < %s -S -mcpu=z13 -msan-kernel=1 -float-abi=soft -passes=msan 2>&1 | FileCheck %s
target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-a:8:16-n32:64"
target triple = "s390x-unknown-linux-gnu"
%struct.__va_list = type { i64, i64, ptr, ptr }
declare void @llvm.lifetime.start.p0(i64, ptr)
declare void @llvm.va_start(ptr)
declare void @llvm.va_end(ptr)
declare void @llvm.lifetime.end.p0(i64, ptr)
define i64 @foo(i64 %guard, ...) #1 {
%vl = alloca %struct.__va_list
call void @llvm.lifetime.start.p0(i64 32, ptr %vl)
call void @llvm.va_start(ptr %vl)
call void @llvm.va_end(ptr %vl)
call void @llvm.lifetime.end.p0(i64 32, ptr %vl)
ret i64 0
}
; CHECK-LABEL: define {{[^@]+}}@foo(
; Callers store variadic arguments' shadow and origins into va_arg_shadow and
; va_arg_origin. Their layout is: the register save area (160 bytes) followed
; by the overflow arg area. It does not depend on "packed-stack".
; Check that callees correctly backup shadow into a local variable.
; CHECK: [[TMP:%.*]] = alloca { ptr, ptr }
; CHECK: [[OverflowSize:%.*]] = load i64, ptr %va_arg_overflow_size
; CHECK: [[MetaSize:%.*]] = add i64 160, [[OverflowSize]]
; CHECK: [[ShadowBackup:%.*]] = alloca {{.*}} [[MetaSize]]
; CHECK: [[MetaCopySize:%.*]] = call i64 @llvm.umin.i64(i64 [[MetaSize]], i64 800)
; CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[ShadowBackup]], ptr align 8 %va_arg_shadow, i64 [[MetaCopySize]], i1 false)
; CHECK: [[OverflowBackup:%.*]] = alloca {{.*}} [[MetaSize]]
; CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OverflowBackup]], ptr align 8 %va_arg_origin, i64 [[MetaCopySize]], i1 false)
; Check that va_start() correctly copies the shadow backup into the shadow of
; the va_list. Register save area and overflow arg area are copied separately.
; Only 56 bytes of the register save area is copied, because of
; "use-soft-float".
; CHECK: call void @llvm.va_start.p0(ptr %vl)
; CHECK: [[VlAddr:%.*]] = ptrtoint ptr %vl to i64
; CHECK: [[RegSaveAreaAddrAddr:%.*]] = add i64 [[VlAddr]], 24
; CHECK: [[RegSaveAreaAddr:%.*]] = inttoptr i64 [[RegSaveAreaAddrAddr]] to ptr
; CHECK: [[RegSaveArea:%.*]] = load ptr, ptr [[RegSaveAreaAddr]]
; CHECK: call void @__msan_metadata_ptr_for_store_1(ptr [[TMP]], ptr [[RegSaveArea]])
; CHECK: [[RegSaveAreaMeta:%.*]] = load { ptr, ptr }, ptr [[TMP]]
; CHECK: [[RegSaveAreaShadow:%.*]] = extractvalue { ptr, ptr } [[RegSaveAreaMeta]], 0
; CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[RegSaveAreaShadow]], ptr align 8 [[ShadowBackup]], i64 56, i1 false)
; CHECK: [[VlAddr:%.*]] = ptrtoint ptr %vl to i64
; CHECK: [[OverflowAddrAddr:%.*]] = add i64 [[VlAddr]], 16
; CHECK: [[OverflowAddr:%.*]] = inttoptr i64 [[OverflowAddrAddr]] to ptr
; CHECK: [[Overflow:%.*]] = load ptr, ptr [[OverflowAddr]]
; CHECK: call void @__msan_metadata_ptr_for_store_1(ptr [[TMP]], ptr [[Overflow]])
; CHECK: [[OverflowMeta:%.*]] = load { ptr, ptr }, ptr [[TMP]]
; CHECK: [[OverflowShadow:%.*]] = extractvalue { ptr, ptr } [[OverflowMeta]], 0
; CHECK: [[OverflowShadowBackup:%.*]] = getelementptr i8, ptr [[ShadowBackup]], i32 160
; CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OverflowShadow]], ptr align 8 [[OverflowShadowBackup]], i64 [[OverflowSize]], i1 false)
declare i32 @random_i32()
declare i64 @random_i64()
declare float @random_float()
declare double @random_double()
define i64 @bar() #1 {
%arg2 = call i32 () @random_i32()
%arg3 = call float () @random_float()
%arg4 = call i32 () @random_i32()
%arg5 = call double () @random_double()
%arg6 = call i64 () @random_i64()
%arg9 = call i32 () @random_i32()
%arg11 = call float () @random_float()
%arg12 = call i32 () @random_i32()
%arg13 = call double () @random_double()
%arg14 = call i64 () @random_i64()
%1 = call i64 (i64, ...) @foo(i64 1, i32 zeroext %arg2, float %arg3,
i32 signext %arg4, double %arg5, i64 %arg6,
i64 7, double 8.0, i32 zeroext %arg9,
double 10.0, float %arg11, i32 signext %arg12,
double %arg13, i64 %arg14)
ret i64 %1
}
attributes #1 = { sanitize_memory "target-features"="+soft-float" "use-soft-float"="true" }
; In kernel the floating point values are passed in GPRs:
; - r2@16 == i64 1 - skipped, because it's fixed
; - r3@24 == i32 zext %arg2 - shadow is zero-extended
; - r4@(32 + 4) == float %arg3 - right-justified, shadow is 32-bit
; - r5@40 == i32 sext %arg4 - shadow is sign-extended
; - r6@48 == double %arg5 - straightforward
; - overflow@160 == i64 %arg6 - straightforward
; - overflow@168 == 7 - filler
; - overflow@176 == 8.0 - filler
; - overflow@184 == i32 zext %arg9 - shadow is zero-extended
; - overflow@192 == 10.0 - filler
; - overflow@(200 + 4) == float %arg11 - right-justified, shadow is 32-bit
; - overflow@208 == i32 sext %arg12 - shadow is sign-extended
; - overflow@216 == double %arg13 - straightforward
; - overflow@224 == i64 %arg14 - straightforward
; Overflow arg area size is 72.
; CHECK-LABEL: @bar
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 24
; CHECK: [[V:%.*]] = zext {{.*}}
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[V]], {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 36
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 40
; CHECK: [[V:%.*]] = sext {{.*}}
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[V]], {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 48
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 160
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 168
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 176
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 184
; CHECK: [[V:%.*]] = zext {{.*}}
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[V]], {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 192
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 204
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 208
; CHECK: [[V:%.*]] = sext {{.*}}
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[V]], {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 216
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: [[B:%.*]] = ptrtoint ptr %va_arg_shadow to i64
; CHECK: [[S:%.*]] = add i64 [[B]], 224
; CHECK: [[M:%_msarg_va_s.*]] = inttoptr i64 [[S]] to ptr
; CHECK: store {{.*}} [[M]]
; CHECK: store {{.*}} 72, {{.*}} %va_arg_overflow_size
|