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| author | Scott Constable <scott.d.constable@intel.com> | 2020-05-11 10:25:35 -0700 |
|---|---|---|
| committer | Tom Stellard <tstellar@redhat.com> | 2020-06-24 09:31:04 -0700 |
| commit | 363720c2b0f60b512c5f5b8bfbf010f86d078152 (patch) | |
| tree | 997f055b25a0b6f44a34e5c2e3acc0e5e9adebd9 /clang/test/Driver | |
| parent | 1d8639336d961f6d04142e935be5da16f24e4503 (diff) | |
| download | bcm5719-llvm-363720c2b0f60b512c5f5b8bfbf010f86d078152.tar.gz bcm5719-llvm-363720c2b0f60b512c5f5b8bfbf010f86d078152.zip | |
[X86] Add a Pass that builds a Condensed CFG for Load Value Injection (LVI) Gadgets
Adds a new data structure, ImmutableGraph, and uses RDF to find LVI gadgets and add them to a MachineGadgetGraph.
More specifically, a new X86 machine pass finds Load Value Injection (LVI) gadgets consisting of a load from memory (i.e., SOURCE), and any operation that may transmit the value loaded from memory over a covert channel, or use the value loaded from memory to determine a branch/call target (i.e., SINK).
Also adds a new target feature to X86: +lvi-load-hardening
The feature can be added via the clang CLI using -mlvi-hardening.
Differential Revision: https://reviews.llvm.org/D75936
Diffstat (limited to 'clang/test/Driver')
| -rw-r--r-- | clang/test/Driver/x86-target-features.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/clang/test/Driver/x86-target-features.c b/clang/test/Driver/x86-target-features.c index 4f133b5dd68..fd9bf087869 100644 --- a/clang/test/Driver/x86-target-features.c +++ b/clang/test/Driver/x86-target-features.c @@ -166,6 +166,18 @@ // RUN: %clang -target i386-linux-gnu -mlvi-cfi -mretpoline-external-thunk %s -### -o %t.o 2>&1 | FileCheck -check-prefix=LVICFI-RETPOLINE-EXTERNAL-THUNK %s // LVICFI-RETPOLINE-EXTERNAL-THUNK: error: invalid argument 'mretpoline-external-thunk' not allowed with 'mlvi-cfi' +// RUN: %clang -target i386-linux-gnu -mlvi-hardening %s -### -o %t.o 2>&1 | FileCheck -check-prefix=LVIHARDENING %s +// RUN: %clang -target i386-linux-gnu -mno-lvi-hardening %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-LVIHARDENING %s +// LVIHARDENING: "-target-feature" "+lvi-load-hardening" "-target-feature" "+lvi-cfi" +// NO-LVIHARDENING-NOT: lvi + +// RUN: %clang -target i386-linux-gnu -mlvi-hardening -mspeculative-load-hardening %s -### -o %t.o 2>&1 | FileCheck -check-prefix=LVIHARDENING-SLH %s +// LVIHARDENING-SLH: error: invalid argument 'mspeculative-load-hardening' not allowed with 'mlvi-hardening' +// RUN: %clang -target i386-linux-gnu -mlvi-hardening -mretpoline %s -### -o %t.o 2>&1 | FileCheck -check-prefix=LVIHARDENING-RETPOLINE %s +// LVIHARDENING-RETPOLINE: error: invalid argument 'mretpoline' not allowed with 'mlvi-hardening' +// RUN: %clang -target i386-linux-gnu -mlvi-hardening -mretpoline-external-thunk %s -### -o %t.o 2>&1 | FileCheck -check-prefix=LVIHARDENING-RETPOLINE-EXTERNAL-THUNK %s +// LVIHARDENING-RETPOLINE-EXTERNAL-THUNK: error: invalid argument 'mretpoline-external-thunk' not allowed with 'mlvi-hardening' + // RUN: %clang -target i386-linux-gnu -mwaitpkg %s -### -o %t.o 2>&1 | FileCheck -check-prefix=WAITPKG %s // RUN: %clang -target i386-linux-gnu -mno-waitpkg %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-WAITPKG %s // WAITPKG: "-target-feature" "+waitpkg" |
