derek.holloway
7502bf64a4
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50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -fsanitize=kcfi -fsanitize-cfi-icall-experimental-normalize-integers -o - %s | FileCheck %s --check-prefixes=CHECK,C
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -fsanitize=kcfi -fsanitize-cfi-icall-experimental-normalize-integers -x c++ -o - %s | FileCheck %s --check-prefixes=CHECK,CPP
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#if !__has_feature(kcfi)
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#error Missing kcfi?
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#endif
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// Test that normalized type metadata for functions are emitted for cross-language KCFI support with
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// other languages that can't represent and encode C/C++ integer types.
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void foo(void (*fn)(int), int arg) {
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// CHECK-LABEL: define{{.*}}foo
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// CHECK-SAME: {{.*}}!kcfi_type ![[TYPE1:[0-9]+]]
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// CHECK: call void %0(i32 noundef %1){{.*}}[ "kcfi"(i32 1162514891) ]
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fn(arg);
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}
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void bar(void (*fn)(int, int), int arg1, int arg2) {
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// CHECK-LABEL: define{{.*}}bar
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// CHECK-SAME: {{.*}}!kcfi_type ![[TYPE2:[0-9]+]]
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// CHECK: call void %0(i32 noundef %1, i32 noundef %2){{.*}}[ "kcfi"(i32 448046469) ]
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fn(arg1, arg2);
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}
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void baz(void (*fn)(int, int, int), int arg1, int arg2, int arg3) {
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// CHECK-LABEL: define{{.*}}baz
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// CHECK-SAME: {{.*}}!kcfi_type ![[TYPE3:[0-9]+]]
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// CHECK: call void %0(i32 noundef %1, i32 noundef %2, i32 noundef %3){{.*}}[ "kcfi"(i32 -2049681433) ]
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fn(arg1, arg2, arg3);
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}
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union Union {
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char *c;
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long *n;
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} __attribute__((transparent_union));
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void uni(void (*fn)(union Union), union Union arg1) {
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// CHECK-LABEL: define{{.*}}uni
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// CHECK-SAME: {{.*}}!kcfi_type ![[TYPE4:[0-9]+]]
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// C: call void %0(ptr %1) [ "kcfi"(i32 1819770848) ]
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// CPP: call void %0(ptr %1) [ "kcfi"(i32 -1430221633) ]
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fn(arg1);
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}
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// CHECK: ![[#]] = !{i32 4, !"cfi-normalize-integers", i32 1}
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// CHECK: ![[TYPE1]] = !{i32 -1143117868}
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// CHECK: ![[TYPE2]] = !{i32 -460921415}
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// CHECK: ![[TYPE3]] = !{i32 -333839615}
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// C: ![[TYPE4]] = !{i32 -650530463}
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// CPP: ![[TYPE4]] = !{i32 1766237188}
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