derek.holloway
7502bf64a4
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31 lines
978 B
C
31 lines
978 B
C
// This is a hack to access CFI interface that Android has in libdl.so on
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// device, but not in the NDK.
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#include <dlfcn.h>
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#include <stdint.h>
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#include <stdlib.h>
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typedef void (*cfi_slowpath_ty)(uint64_t, void *);
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typedef void (*cfi_slowpath_diag_ty)(uint64_t, void *, void *);
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static cfi_slowpath_ty cfi_slowpath;
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static cfi_slowpath_diag_ty cfi_slowpath_diag;
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__attribute__((constructor(0), no_sanitize("cfi"))) static void init() {
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cfi_slowpath = (cfi_slowpath_ty)dlsym(RTLD_NEXT, "__cfi_slowpath");
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cfi_slowpath_diag =
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(cfi_slowpath_diag_ty)dlsym(RTLD_NEXT, "__cfi_slowpath_diag");
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if (!cfi_slowpath || !cfi_slowpath_diag) abort();
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}
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extern "C" {
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__attribute__((visibility("hidden"), no_sanitize("cfi"))) void __cfi_slowpath(
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uint64_t Type, void *Addr) {
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cfi_slowpath(Type, Addr);
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}
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__attribute__((visibility("hidden"), no_sanitize("cfi"))) void
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__cfi_slowpath_diag(uint64_t Type, void *Addr, void *Diag) {
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cfi_slowpath_diag(Type, Addr, Diag);
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}
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}
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