[compiler-rt] Remove a few workarounds for FreeBSD 9.x (#76263)

Support for FreeBSD 11.x was dropped so garbage collect a few FreeBSD
9.x workarounds and make 12.x the oldest supported releases.

Author: brad0

compiler-rt/lib/asan/asan_linux.cpp

@@ -33,7 +33,6 @@
 #  include "asan_premap_shadow.h"
 #  include "asan_thread.h"
 #  include "sanitizer_common/sanitizer_flags.h"
-#  include "sanitizer_common/sanitizer_freebsd.h"
 #  include "sanitizer_common/sanitizer_hash.h"
 #  include "sanitizer_common/sanitizer_libc.h"
 #  include "sanitizer_common/sanitizer_procmaps.h"
@@ -59,13 +58,6 @@ extern Elf_Dyn _DYNAMIC;
 extern ElfW(Dyn) _DYNAMIC[];
 #  endif
 
-// x86-64 FreeBSD 9.2 and older define 'ucontext_t' incorrectly in
-// 32-bit mode.
-#  if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32) && \
-      __FreeBSD_version <= 902001  // v9.2
-#    define ucontext_t xucontext_t
-#  endif
-
 typedef enum {
   ASAN_RT_VERSION_UNDEFINED = 0,
   ASAN_RT_VERSION_DYNAMIC,

compiler-rt/lib/asan/asan_new_delete.cpp

@@ -48,15 +48,6 @@ COMMENT_EXPORT("??_V@YAXPAX@Z")                   // operator delete[]
 
 using namespace __asan;
 
-// FreeBSD prior v9.2 have wrong definition of 'size_t'.
-// http://svnweb.freebsd.org/base?view=revision&revision=232261
-#if SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 32
-#include <sys/param.h>
-#if __FreeBSD_version <= 902001  // v9.2
-#define size_t unsigned
-#endif  // __FreeBSD_version
-#endif  // SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 32
-
 // This code has issues on OSX.
 // See https://github.com/google/sanitizers/issues/131.
 

compiler-rt/lib/builtins/fp_lib.h

@@ -26,18 +26,6 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-// x86_64 FreeBSD prior v9.3 define fixed-width types incorrectly in
-// 32-bit mode.
-#if defined(__FreeBSD__) && defined(__i386__)
-#include <sys/param.h>
-#if __FreeBSD_version < 903000 // v9.3
-#define uint64_t unsigned long long
-#define int64_t long long
-#undef UINT64_C
-#define UINT64_C(c) (c##ULL)
-#endif
-#endif
-
 #if defined SINGLE_PRECISION
 
 typedef uint16_t half_rep_t;

compiler-rt/lib/memprof/memprof_linux.cpp

@@ -20,7 +20,6 @@
 #include "memprof_internal.h"
 #include "memprof_thread.h"
 #include "sanitizer_common/sanitizer_flags.h"
-#include "sanitizer_common/sanitizer_freebsd.h"
 #include "sanitizer_common/sanitizer_libc.h"
 #include "sanitizer_common/sanitizer_procmaps.h"
 

compiler-rt/lib/sanitizer_common/CMakeLists.txt

@@ -151,7 +151,6 @@ set(SANITIZER_IMPL_HEADERS
   sanitizer_flags.h
   sanitizer_flags.inc
   sanitizer_flat_map.h
-  sanitizer_freebsd.h
   sanitizer_fuchsia.h
   sanitizer_getauxval.h
   sanitizer_hash.h

compiler-rt/lib/sanitizer_common/sanitizer_freebsd.h

@@ -58,7 +58,6 @@
 #  include <sched.h>
 #  include <signal.h>
 #  include <sys/mman.h>
-#  include <sys/param.h>
 #  if !SANITIZER_SOLARIS
 #    include <sys/ptrace.h>
 #  endif
@@ -136,9 +135,7 @@ const int FUTEX_WAKE_PRIVATE = FUTEX_WAKE | FUTEX_PRIVATE_FLAG;
 #    define SANITIZER_LINUX_USES_64BIT_SYSCALLS 0
 #  endif
 
-// Note : FreeBSD had implemented both
-// Linux apis, available from
-// future 12.x version most likely
+// Note : FreeBSD implemented both Linux and OpenBSD apis.
 #  if SANITIZER_LINUX && defined(__NR_getrandom)
 #    if !defined(GRND_NONBLOCK)
 #      define GRND_NONBLOCK 1
@@ -148,10 +145,8 @@ const int FUTEX_WAKE_PRIVATE = FUTEX_WAKE | FUTEX_PRIVATE_FLAG;
 #    define SANITIZER_USE_GETRANDOM 0
 #  endif  // SANITIZER_LINUX && defined(__NR_getrandom)
 
-#  if SANITIZER_FREEBSD && __FreeBSD_version >= 1200000
+#  if SANITIZER_FREEBSD
 #    define SANITIZER_USE_GETENTROPY 1
-#  else
-#    define SANITIZER_USE_GETENTROPY 0
 #  endif
 
 namespace __sanitizer {

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

@@ -21,7 +21,6 @@
 #  include "sanitizer_common.h"
 #  include "sanitizer_file.h"
 #  include "sanitizer_flags.h"
-#  include "sanitizer_freebsd.h"
 #  include "sanitizer_getauxval.h"
 #  include "sanitizer_glibc_version.h"
 #  include "sanitizer_linux.h"
@@ -46,7 +45,6 @@
 #  endif
 
 #  if SANITIZER_FREEBSD
-#    include <osreldate.h>
 #    include <pthread_np.h>
 #    include <sys/auxv.h>
 #    include <sys/sysctl.h>
@@ -629,11 +627,7 @@ void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
 
 #  if !SANITIZER_FREEBSD
 typedef ElfW(Phdr) Elf_Phdr;
-#  elif SANITIZER_WORDSIZE == 32 && __FreeBSD_version <= 902001  // v9.2
-#    define Elf_Phdr XElf32_Phdr
-#    define dl_phdr_info xdl_phdr_info
-#    define dl_iterate_phdr(c, b) xdl_iterate_phdr((c), (b))
-#  endif  // !SANITIZER_FREEBSD
+#  endif
 
 struct DlIteratePhdrData {
   InternalMmapVectorNoCtor<LoadedModule> *modules;

compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

@@ -13,9 +13,6 @@
 #include "sanitizer_platform.h"
 #if SANITIZER_FREEBSD || SANITIZER_NETBSD
 #include "sanitizer_common.h"
-#if SANITIZER_FREEBSD
-#include "sanitizer_freebsd.h"
-#endif
 #include "sanitizer_procmaps.h"
 
 // clang-format off
@@ -29,14 +26,6 @@
 
 #include <limits.h>
 
-// Fix 'kinfo_vmentry' definition on FreeBSD prior v9.2 in 32-bit mode.
-#if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32)
-#include <osreldate.h>
-#if __FreeBSD_version <= 902001 // v9.2
-#define kinfo_vmentry xkinfo_vmentry
-#endif
-#endif
-
 namespace __sanitizer {
 
 #if SANITIZER_FREEBSD