Files
clang-p2996/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
Kamil Rytarowski edbe2b3f02 Add support for LLVM profile for NetBSD
Summary:
NetBSD uses typical UNIX interfaces.

All tests pass except instrprof-dlopen-dlclose-gcov.test, as there
is not supported semantics of atexit(3) in dlopen(3)ed+dlclose(3)d
DSO.

NetBSD also ships an older version of LLVM profile (ABI v.2 predating
ABI v.4 in upstream version) inside libc. That copy has been manually
removed during the porting and testing process of the upstream version
to NetBSD. Otherwise there were conflicts between them two.

Reviewers: joerg, vitalybuka, vsk

Subscribers: srhines, fedor.sergeev, llvm-commits, mgorny, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D55997

llvm-svn: 349994
2018-12-22 06:56:19 +00:00

96 lines
3.2 KiB
C

/*===- InstrProfilingPlatformOther.c - Profile data default platform ------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file is distributed under the University of Illinois Open Source
|* License. See LICENSE.TXT for details.
|*
\*===----------------------------------------------------------------------===*/
#if !defined(__APPLE__) && !defined(__linux__) && !defined(__FreeBSD__) && \
!(defined(__sun__) && defined(__svr4__)) && !defined(__NetBSD__)
#include <stdlib.h>
#include "InstrProfiling.h"
static const __llvm_profile_data *DataFirst = NULL;
static const __llvm_profile_data *DataLast = NULL;
static const char *NamesFirst = NULL;
static const char *NamesLast = NULL;
static uint64_t *CountersFirst = NULL;
static uint64_t *CountersLast = NULL;
static const void *getMinAddr(const void *A1, const void *A2) {
return A1 < A2 ? A1 : A2;
}
static const void *getMaxAddr(const void *A1, const void *A2) {
return A1 > A2 ? A1 : A2;
}
/*!
* \brief Register an instrumented function.
*
* Calls to this are emitted by clang with -fprofile-instr-generate. Such
* calls are only required (and only emitted) on targets where we haven't
* implemented linker magic to find the bounds of the sections.
*/
COMPILER_RT_VISIBILITY
void __llvm_profile_register_function(void *Data_) {
/* TODO: Only emit this function if we can't use linker magic. */
const __llvm_profile_data *Data = (__llvm_profile_data *)Data_;
if (!DataFirst) {
DataFirst = Data;
DataLast = Data + 1;
CountersFirst = Data->CounterPtr;
CountersLast = (uint64_t *)Data->CounterPtr + Data->NumCounters;
return;
}
DataFirst = (const __llvm_profile_data *)getMinAddr(DataFirst, Data);
CountersFirst = (uint64_t *)getMinAddr(CountersFirst, Data->CounterPtr);
DataLast = (const __llvm_profile_data *)getMaxAddr(DataLast, Data + 1);
CountersLast = (uint64_t *)getMaxAddr(
CountersLast, (uint64_t *)Data->CounterPtr + Data->NumCounters);
}
COMPILER_RT_VISIBILITY
void __llvm_profile_register_names_function(void *NamesStart,
uint64_t NamesSize) {
if (!NamesFirst) {
NamesFirst = (const char *)NamesStart;
NamesLast = (const char *)NamesStart + NamesSize;
return;
}
NamesFirst = (const char *)getMinAddr(NamesFirst, NamesStart);
NamesLast =
(const char *)getMaxAddr(NamesLast, (const char *)NamesStart + NamesSize);
}
COMPILER_RT_VISIBILITY
const __llvm_profile_data *__llvm_profile_begin_data(void) { return DataFirst; }
COMPILER_RT_VISIBILITY
const __llvm_profile_data *__llvm_profile_end_data(void) { return DataLast; }
COMPILER_RT_VISIBILITY
const char *__llvm_profile_begin_names(void) { return NamesFirst; }
COMPILER_RT_VISIBILITY
const char *__llvm_profile_end_names(void) { return NamesLast; }
COMPILER_RT_VISIBILITY
uint64_t *__llvm_profile_begin_counters(void) { return CountersFirst; }
COMPILER_RT_VISIBILITY
uint64_t *__llvm_profile_end_counters(void) { return CountersLast; }
COMPILER_RT_VISIBILITY
ValueProfNode *__llvm_profile_begin_vnodes(void) {
return 0;
}
COMPILER_RT_VISIBILITY
ValueProfNode *__llvm_profile_end_vnodes(void) { return 0; }
COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = 0;
COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = 0;
#endif