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[compiler-rt] [netbsd] Switch to syscall for ThreadSelfTlsTcb()

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This change avoids using internal, namespaced per-CPU calls that
are not a stable interface to read the TSL base value.
This commit is contained in:
Kamil Rytarowski 2020-01-03 02:35:33 +01:00
parent 2c4620ad57
commit 0da15ff318
1 changed files with 2 additions and 11 deletions
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13
compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
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@ -28,10 +28,6 @@
#include "sanitizer_placement_new.h"
#include "sanitizer_procmaps.h"
#if SANITIZER_NETBSD
#define _RTLD_SOURCE // Fast LWP private pointer getters in ThreadSelfTlsTcb().
#endif
#include <dlfcn.h> // for dlsym()
#include <link.h>
#include <pthread.h>
@ -54,6 +50,7 @@
#if SANITIZER_NETBSD
#include <sys/sysctl.h>
#include <sys/tls.h>
#include <lwp.h>
#endif
#if SANITIZER_SOLARIS
@ -403,13 +400,7 @@ uptr ThreadSelf() {
#if SANITIZER_NETBSD
static struct tls_tcb * ThreadSelfTlsTcb() {
struct tls_tcb * tcb;
# ifdef __HAVE___LWP_GETTCB_FAST
tcb = (struct tls_tcb *)__lwp_gettcb_fast();
# elif defined(__HAVE___LWP_GETPRIVATE_FAST)
tcb = (struct tls_tcb *)__lwp_getprivate_fast();
# endif
return tcb;
return (struct tls_tcb *)_lwp_getprivate();
}
uptr ThreadSelf() {