libc: Provide ucontext_t/mcontext_t/<sys/ucontext.h>
This patch updates the C library headers to provide ucontext_t
definitions for three architectures.
+ Fix <signal.h> to always define 'struct sigcontext'.
The new declarations are announced with new macros defined in
<sys/cdefs.h> in order to make it easier to adapt client code
that already defines its own, incompatible, versions of the
structures seen here.
http://code.google.com/p/android/issues/detail?id=34784
Change-Id: Ie78c48690a4ce61c50593f6c39639be7fead3596
diff --git a/libc/bionic/pthread.c b/libc/bionic/pthread.c
index da3a551..a6c1908 100644
--- a/libc/bionic/pthread.c
+++ b/libc/bionic/pthread.c
@@ -2106,8 +2106,8 @@
* the C library ABI, so perform a little runtime translation here.
*/
typedef union {
- sigset_t bionic;
- uint32_t kernel[2];
+ sigset_t bionic;
+ __kernel_sigset_t kernel;
} kernel_sigset_t;
/* this is a private syscall stub */
@@ -2124,8 +2124,8 @@
kernel_sigset_t in_set, *in_set_ptr;
kernel_sigset_t out_set;
- in_set.kernel[0] = in_set.kernel[1] = 0;
- out_set.kernel[0] = out_set.kernel[1] = 0;
+ memset(&in_set.kernel, 0, sizeof(in_set.kernel));
+ memset(&out_set.kernel, 0, sizeof(out_set.kernel));
/* 'in_set_ptr' is the second parameter to __rt_sigprocmask. It must be NULL
* if 'set' is NULL to ensure correct semantics (which in this case would