a814c94163
Summary: Functions with the LOG_ARGS_ENTRY sled kind at their beginning will be handled in a way to (optionally) pass their first call argument to your logging handler. For practical and performance reasons, only the first argument is supported, and only up to 64 bits. Reviewers: javed.absar, dberris Reviewed By: dberris Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D29703 llvm-svn: 297000
69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//===-- xray_interface_internal.h -------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of XRay, a dynamic runtime instrumentation system.
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//
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// Implementation of the API functions. See also include/xray/xray_interface.h.
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//
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//===----------------------------------------------------------------------===//
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#ifndef XRAY_INTERFACE_INTERNAL_H
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#define XRAY_INTERFACE_INTERNAL_H
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#include "sanitizer_common/sanitizer_platform.h"
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#include "xray/xray_interface.h"
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#include <cstddef>
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#include <cstdint>
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extern "C" {
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struct XRaySledEntry {
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#if SANITIZER_WORDSIZE == 64
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uint64_t Address;
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uint64_t Function;
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unsigned char Kind;
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unsigned char AlwaysInstrument;
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unsigned char Padding[14]; // Need 32 bytes
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#elif SANITIZER_WORDSIZE == 32
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uint32_t Address;
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uint32_t Function;
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unsigned char Kind;
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unsigned char AlwaysInstrument;
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unsigned char Padding[6]; // Need 16 bytes
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#else
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#error "Unsupported word size."
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#endif
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};
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}
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namespace __xray {
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struct XRaySledMap {
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const XRaySledEntry *Sleds;
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size_t Entries;
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};
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bool patchFunctionEntry(bool Enable, uint32_t FuncId,
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const XRaySledEntry &Sled, void (*Trampoline)());
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bool patchFunctionExit(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled);
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bool patchFunctionTailExit(bool Enable, uint32_t FuncId,
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const XRaySledEntry &Sled);
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} // namespace __xray
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extern "C" {
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// The following functions have to be defined in assembler, on a per-platform
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// basis. See xray_trampoline_*.S files for implementations.
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extern void __xray_FunctionEntry();
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extern void __xray_FunctionExit();
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extern void __xray_FunctionTailExit();
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extern void __xray_ArgLoggerEntry();
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}
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#endif
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