55248db0c9
On Darwin, compiler_rt uses magic linker symbols to find the profile counters in the __DATA segment. This is a reasonable method for normal, hosted, userspace programs. However programs with custom memory layouts, such as the kernel, will need to tell compiler_rt explicitly where to find these sections. Patch by Lawrence D'Anna. Thanks! llvm-svn: 223840
41 lines
1.6 KiB
C
41 lines
1.6 KiB
C
/*===- InstrProfiling.h- Support library for PGO instrumentation ----------===*\
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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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#ifndef PROFILE_INSTRPROFILING_INTERNALH_
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#define PROFILE_INSTRPROFILING_INTERNALH_
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#include "InstrProfiling.h"
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/*!
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* \brief Write instrumentation data to the given buffer, given explicit
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* pointers to the live data in memory. This function is probably not what you
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* want. Use __llvm_profile_get_size_for_buffer instead. Use this function if
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* your program has a custom memory layout.
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*/
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uint64_t __llvm_profile_get_size_for_buffer_internal(
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const __llvm_profile_data *DataBegin, const __llvm_profile_data *DataEnd,
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const uint64_t *CountersBegin, const uint64_t *CountersEnd,
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const char *NamesBegin, const char *NamesEnd);
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/*!
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* \brief Write instrumentation data to the given buffer, given explicit
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* pointers to the live data in memory. This function is probably not what you
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* want. Use __llvm_profile_write_buffer instead. Use this function if your
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* program has a custom memory layout.
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*
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* \pre \c Buffer is the start of a buffer at least as big as \a
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* __llvm_profile_get_size_for_buffer_internal().
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*/
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int __llvm_profile_write_buffer_internal(
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char *Buffer, const __llvm_profile_data *DataBegin,
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const __llvm_profile_data *DataEnd, const uint64_t *CountersBegin,
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const uint64_t *CountersEnd, const char *NamesBegin, const char *NamesEnd);
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#endif
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