451a9ce9ff
This PR introduces the use of pointer authentication to objective-c[++]. This includes: * __ptrauth qualifier support for ivars * protection of isa and super fields * protection of SEL typed ivars * protection of class_ro_t data * protection of methodlist pointers and content
81 lines
3.8 KiB
Objective-C
81 lines
3.8 KiB
Objective-C
// RUN: %clang_cc1 -triple arm64-apple-ios -fptrauth-calls -emit-llvm -fexceptions -fptrauth-intrinsics -o - %s | FileCheck %s
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typedef void (*func)();
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__attribute__((objc_root_class))
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@interface Root {
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Class isa;
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void *__ptrauth(1, 1, 1) _field1;
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void *__ptrauth(1, 1, 1) _field2;
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func __ptrauth(1, 1, 1) _field3;
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func __ptrauth(1, 1, 123) _field4;
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}
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@property void *field1;
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@property(nonatomic) void *field2;
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@property func field3;
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@property(nonatomic) func field4;
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@end
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@implementation Root
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@end
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// CHECK-LABEL: define internal ptr @"\01-[Root field1]"
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// CHECK: [[LOAD:%.*]] = load atomic i64, ptr [[ADDR:%.*]] unordered
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// CHECK: [[CAST_ADDR:%.*]] = ptrtoint ptr [[ADDR]] to i64
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// CHECK: [[BLEND:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CAST_ADDR]], i64 1)
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// CHECK: [[RESULT:%.*]] = call i64 @llvm.ptrauth.auth(i64 [[LOAD]], i32 1, i64 [[BLEND]])
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// CHECK-LABEL: define internal void @"\01-[Root setField1:]"
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// CHECK: [[CAST_ADDR:%.*]] = ptrtoint ptr [[ADDR:%.*]] to i64
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// CHECK: [[BLEND:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CAST_ADDR]], i64 1)
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// CHECK: [[RESULT:%.*]] = call i64 @llvm.ptrauth.sign(i64 [[VALUE:%.*]], i32 1, i64 [[BLEND]])
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// CHECK: [[PHI:%.*]] = phi i64 [ 0, {{%.*}} ], [ [[RESULT]], {{%.*}} ]
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// CHECK: store atomic i64 [[PHI]], ptr [[ADDR]] unordered
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// CHECK-LABEL: define internal ptr @"\01-[Root field2]"
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// CHECK: load ptr, ptr
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// CHECK: [[LOAD:%.*]] = load ptr, ptr [[ADDR:%.*]],
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// CHECK: [[CAST_ADDR:%.*]] = ptrtoint ptr [[ADDR]] to i64
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// CHECK: [[BLEND:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CAST_ADDR:%.*]], i64 1)
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// CHECK: [[VALUE:%.*]] = ptrtoint ptr [[LOAD]] to i64
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// CHECK: [[RESULT:%.*]] = call i64 @llvm.ptrauth.auth(i64 [[VALUE]], i32 1, i64 [[BLEND]])
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// CHECK-LABEL: define internal void @"\01-[Root setField2:]"
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// CHECK: [[CAST_ADDR:%.*]] = ptrtoint ptr [[ADDR:%.*]] to i64
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// CHECK: [[BLEND:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CAST_ADDR]], i64 1)
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// CHECK: [[CAST_VALUE:%.*]] = ptrtoint ptr [[VALUE:%.*]] to i64
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// CHECK: [[SIGNED:%.*]] = call i64 @llvm.ptrauth.sign(i64 [[CAST_VALUE]], i32 1, i64 [[BLEND]])
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// CHECK: [[RESULT:%.*]] = inttoptr i64 [[SIGNED]] to ptr
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// CHECK: [[PHI:%.*]] = phi ptr [ null, {{%.*}} ], [ [[RESULT]], {{%.*}} ]
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// CHECK: store ptr [[PHI]], ptr [[ADDR]]
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// CHECK-LABEL: define internal ptr @"\01-[Root field3]"
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// CHECK: [[VALUE:%.*]] = load atomic i64, ptr [[ADDR:%.*]] unordered, align 8
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// CHECK: [[CASTED_ADDR:%.*]] = ptrtoint ptr [[ADDR]] to i64
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// CHECK: [[BLENDED:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CASTED_ADDR]], i64 1)
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// CHECK: {{%.*}} = call i64 @llvm.ptrauth.resign(i64 [[VALUE]], i32 1, i64 [[BLENDED]], i32 0, i64 0
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// CHECK-LABEL: define internal void @"\01-[Root setField3:]"
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// CHECK: [[VALUE:%.*]] = load i64, ptr {{%.*}}, align 8
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// CHECK: [[CASTED_ADDR:%.*]] = ptrtoint ptr {{%.*}} to i64
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// CHECK: [[BLENDED:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CASTED_ADDR]], i64 1)
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// CHECK: {{%.*}} = call i64 @llvm.ptrauth.resign(i64 [[VALUE]], i32 0, i64 0, i32 1, i64 [[BLENDED]])
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// CHECK: store atomic i64
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// CHECK-LABEL: define internal ptr @"\01-[Root field4]"
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// CHECK: load ptr, ptr
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// CHECK: [[VALUE:%.*]] = load ptr, ptr [[ADDR:%.*]],
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// CHECK: [[CASTED_ADDR:%.*]] = ptrtoint ptr [[ADDR]] to i64
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// CHECK: [[BLENDED:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CASTED_ADDR]], i64 123)
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// CHECK: [[CAST_VALUE:%.*]] = ptrtoint ptr [[VALUE]] to i64
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// CHECK: {{%.*}} = call i64 @llvm.ptrauth.resign(i64 [[CAST_VALUE]], i32 1, i64 [[BLENDED]], i32 0, i64 0)
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// CHECK-LABEL: define internal void @"\01-[Root setField4:]"
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// CHECK: [[CAST_ADDR:%.*]] = ptrtoint ptr {{%.*}} to i64
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// CHECK: [[BLENDED:%.*]] = call i64 @llvm.ptrauth.blend(i64 [[CAST_ADDR]], i64 123)
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// CHECK: resign.nonnull:
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// CHECK: [[VALUE:%.*]] = ptrtoint ptr %1 to i64
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// CHECK: {{%.*}} = call i64 @llvm.ptrauth.resign(i64 [[VALUE]], i32 0, i64 0, i32 1, i64 [[BLENDED]])
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