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

5 files changed, 7 insertions, 4 deletions

diff --git a/compiler-rt/cmake/config-ix.cmake b/compiler-rt/cmake/config-ix.cmake
index 7e9ad63556a..db5c4645dc0 100644
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@@ -586,7 +586,7 @@ else()
 endif()
 
 if (PROFILE_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
-    OS_NAME MATCHES "Darwin|Linux|FreeBSD|Windows|Android|Fuchsia|SunOS")
+    OS_NAME MATCHES "Darwin|Linux|FreeBSD|Windows|Android|Fuchsia|SunOS|NetBSD")
   set(COMPILER_RT_HAS_PROFILE TRUE)
 else()
   set(COMPILER_RT_HAS_PROFILE FALSE)
diff --git a/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c b/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
index a517821a2fb..3764df1d807 100644
--- a/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
+++ b/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
@@ -8,7 +8,7 @@
 \*===----------------------------------------------------------------------===*/
 
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \
-    (defined(__sun__) && defined(__svr4__))
+    (defined(__sun__) && defined(__svr4__)) || defined(__NetBSD__)
 
 #include <stdlib.h>
 
diff --git a/compiler-rt/lib/profile/InstrProfilingPlatformOther.c b/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
index a339abc7f88..7c2f14cfce1 100644
--- a/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
+++ b/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
@@ -8,7 +8,7 @@
 \*===----------------------------------------------------------------------===*/
 
 #if !defined(__APPLE__) && !defined(__linux__) && !defined(__FreeBSD__) && \
-    !(defined(__sun__) && defined(__svr4__))
+    !(defined(__sun__) && defined(__svr4__)) && !defined(__NetBSD__)
 
 #include <stdlib.h>
 
diff --git a/compiler-rt/test/profile/instrprof-dlopen-dlclose-gcov.test b/compiler-rt/test/profile/instrprof-dlopen-dlclose-gcov.test
index 8b1b2e29474..36b5dbd262d 100644
--- a/compiler-rt/test/profile/instrprof-dlopen-dlclose-gcov.test
+++ b/compiler-rt/test/profile/instrprof-dlopen-dlclose-gcov.test
@@ -1,3 +1,6 @@
+# atexit(3) not supported in dlopen(3)ed+dlclose(3)d DSO
+XFAIL: netbsd
+
 RUN: mkdir -p %t.d
 RUN: cd %t.d
 
diff --git a/compiler-rt/test/profile/lit.cfg b/compiler-rt/test/profile/lit.cfg
index 1cd2509672f..7449650a623 100644
--- a/compiler-rt/test/profile/lit.cfg
+++ b/compiler-rt/test/profile/lit.cfg
@@ -67,7 +67,7 @@ config.substitutions.append( ("%clangxx_profuse=", build_invocation(clang_cxxfla
 
 config.substitutions.append( ("%clang_lto_profgen=", build_invocation(clang_cflags, True) + " -fprofile-instr-generate=") )
 
-if config.host_os not in ['Darwin', 'FreeBSD', 'Linux', 'SunOS']:
+if config.host_os not in ['Darwin', 'FreeBSD', 'Linux', 'NetBSD', 'SunOS']:
   config.unsupported = True
 
 if config.target_arch in ['armv7l']: