f556a7e3c3
On Linux, the profile runtime can use __start_SECTNAME and __stop_SECTNAME symbols defined by the linker to locate the start and end location of a named section (with C name). This eliminates the need for instrumented binary to call __llvm_profile_register_function during start-up time. llvm-svn: 250200
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/*===- InstrProfilingPlatformLinux.c - Profile data Linux platform ------===*\
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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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#include "InstrProfiling.h"
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#if defined(__linux__)
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#include <stdlib.h>
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extern __llvm_profile_data __start___llvm_prf_data
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__attribute__((visibility("hidden")));
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extern __llvm_profile_data __stop___llvm_prf_data
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__attribute__((visibility("hidden")));
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extern uint64_t __start___llvm_prf_cnts __attribute__((visibility("hidden")));
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extern uint64_t __stop___llvm_prf_cnts __attribute__((visibility("hidden")));
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extern char __start___llvm_prf_names __attribute__((visibility("hidden")));
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extern char __stop___llvm_prf_names __attribute__((visibility("hidden")));
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__attribute__((visibility("hidden"))) const __llvm_profile_data *
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__llvm_profile_begin_data(void) {
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return &__start___llvm_prf_data;
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}
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__attribute__((visibility("hidden"))) const __llvm_profile_data *
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__llvm_profile_end_data(void) {
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return &__stop___llvm_prf_data;
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}
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__attribute__((visibility("hidden"))) const char *__llvm_profile_begin_names(
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void) {
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return &__start___llvm_prf_names;
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}
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__attribute__((visibility("hidden"))) const char *__llvm_profile_end_names(
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void) {
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return &__stop___llvm_prf_names;
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}
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__attribute__((visibility("hidden"))) uint64_t *__llvm_profile_begin_counters(
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void) {
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return &__start___llvm_prf_cnts;
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}
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__attribute__((visibility("hidden"))) uint64_t *__llvm_profile_end_counters(
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void) {
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return &__stop___llvm_prf_cnts;
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}
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#endif
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