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| author | Peter Collingbourne <peter@pcc.me.uk> | 2018-04-04 21:55:44 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2018-04-04 21:55:44 +0000 |
| commit | f11eb3ebe77729426e562d7d4d7ebb1d5ff2e7c8 (patch) | |
| tree | bb02cd6d80b6bbd8c47cc5b9490b26cb24a39d81 /clang/test | |
| parent | 4296ea72ffcef9fff5ce735dbbfeccd503200735 (diff) | |
| download | bcm5719-llvm-f11eb3ebe77729426e562d7d4d7ebb1d5ff2e7c8.tar.gz bcm5719-llvm-f11eb3ebe77729426e562d7d4d7ebb1d5ff2e7c8.zip | |
AArch64: Implement support for the shadowcallstack attribute.
The implementation of shadow call stack on aarch64 is quite different to
the implementation on x86_64. Instead of reserving a segment register for
the shadow call stack, we reserve the platform register, x18. Any function
that spills lr to sp also spills it to the shadow call stack, a pointer to
which is stored in x18.
Differential Revision: https://reviews.llvm.org/D45239
llvm-svn: 329236
Diffstat (limited to 'clang/test')
| -rw-r--r-- | clang/test/Driver/sanitizer-ld.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/clang/test/Driver/sanitizer-ld.c b/clang/test/Driver/sanitizer-ld.c index 9ccdf61a914..3c55f5034df 100644 --- a/clang/test/Driver/sanitizer-ld.c +++ b/clang/test/Driver/sanitizer-ld.c @@ -563,6 +563,19 @@ // CHECK-SHADOWCALLSTACK-LINUX-X86-64-NOT: error: // RUN: %clang -fsanitize=shadow-call-stack %s -### -o %t.o 2>&1 \ +// RUN: -target aarch64-unknown-linux -fuse-ld=ld \ +// RUN: | FileCheck --check-prefix=CHECK-SHADOWCALLSTACK-LINUX-AARCH64 %s +// CHECK-SHADOWCALLSTACK-LINUX-AARCH64: '-fsanitize=shadow-call-stack' only allowed with '-ffixed-x18' + +// RUN: %clang -fsanitize=shadow-call-stack %s -### -o %t.o 2>&1 \ +// RUN: -target aarch64-unknown-linux -fuse-ld=ld -ffixed-x18 \ +// RUN: | FileCheck --check-prefix=CHECK-SHADOWCALLSTACK-LINUX-AARCH64-X18 %s +// RUN: %clang -fsanitize=shadow-call-stack %s -### -o %t.o 2>&1 \ +// RUN: -target arm64-unknown-ios -fuse-ld=ld \ +// RUN: | FileCheck --check-prefix=CHECK-SHADOWCALLSTACK-LINUX-AARCH64-X18 %s +// CHECK-SHADOWCALLSTACK-LINUX-AARCH64-X18-NOT: error: + +// RUN: %clang -fsanitize=shadow-call-stack %s -### -o %t.o 2>&1 \ // RUN: -target x86-unknown-linux -fuse-ld=ld \ // RUN: | FileCheck --check-prefix=CHECK-SHADOWCALLSTACK-LINUX-X86 %s // CHECK-SHADOWCALLSTACK-LINUX-X86: error: unsupported option '-fsanitize=shadow-call-stack' for target 'x86-unknown-linux' |
