diff options
| author |   guenther <guenther@openbsd.org> | 2016-05-07 19:05:21 +0000 |
|---|---|---|
| committer | guenther <guenther@openbsd.org> | 2016-05-07 19:05:21 +0000 |
| commit | fe38b55cb0aae270de3f844146814682e8cd345c (patch) | |
| tree | 9825cc8aa96314e8e79ea1802ccbc9349772680b /lib/libc/include/namespace.h | |
| parent | Implement ACPI 5.0 GeneralPurposeIo OpRegion support. This basically allows (diff) | |
| download | wireguard-openbsd-fe38b55cb0aae270de3f844146814682e8cd345c.tar.xz wireguard-openbsd-fe38b55cb0aae270de3f844146814682e8cd345c.zip | |
Use a Thread Information Block in both single and multi-threaded programs.
This stores errno, the cancelation flags, and related bits for each thread
and is allocated by ld.so or libc.a. This is an ABI break from 5.9-stable!
Make libpthread dlopen'able by moving the cancelation wrappers into libc
and doing locking and fork/errno handling via callbacks that libpthread
registers when it first initializes. 'errno' *must* be declared via
<errno.h> now!
Clean up libpthread's symbol exports like libc.
On powerpc, offset the TIB/TCB/TLS data from the register per the ELF spec.
Testing by various, particularly sthen@ and patrick@
ok kettenis@
Diffstat (limited to 'lib/libc/include/namespace.h')
| -rw-r--r-- | lib/libc/include/namespace.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/libc/include/namespace.h b/lib/libc/include/namespace.h index 16d524f666f..980c1a8dd61 100644 --- a/lib/libc/include/namespace.h +++ b/lib/libc/include/namespace.h @@ -1,4 +1,4 @@ -/* $OpenBSD: namespace.h,v 1.9 2016/04/05 04:28:32 guenther Exp $ */ +/* $OpenBSD: namespace.h,v 1.10 2016/05/07 19:05:22 guenther Exp $ */ #ifndef _LIBC_NAMESPACE_H_ #define _LIBC_NAMESPACE_H_ @@ -139,12 +139,14 @@ #define CANCEL(x) _libc_##x##_cancel #define WRAP(x) _libc_##x##_wrap #define HIDDEN_STRING(x) "_libc_" __STRING(x) +#define CANCEL_STRING(x) "_libc_" __STRING(x) "_cancel" #define WRAP_STRING(x) "_libc_" __STRING(x) "_wrap" #define PROTO_NORMAL(x) __dso_hidden typeof(x) x asm(HIDDEN_STRING(x)) #define PROTO_STD_DEPRECATED(x) typeof(x) x __attribute__((deprecated)) #define PROTO_DEPRECATED(x) typeof(x) x __attribute__((deprecated, weak)) -#define PROTO_CANCEL(x) PROTO_NORMAL(x), CANCEL(x) +#define PROTO_CANCEL(x) __dso_hidden typeof(x) HIDDEN(x), \ + x asm(CANCEL_STRING(x)) #define PROTO_WRAP(x) PROTO_NORMAL(x), WRAP(x) #define DEF_STRONG(x) __strong_alias(x, HIDDEN(x)) |