musl/arch/i386/pthread_arch.h
Rich Felker cb1bf2f321 properly access mcontext_t program counter in cancellation handler
using the actual mcontext_t definition rather than an overlaid pointer
array both improves correctness/readability and eliminates some ugly
hacks for archs with 64-bit registers bit 32-bit program counter.

also fix UB due to comparison of pointers not in a common array
object.
2015-11-02 12:41:49 -05:00

11 lines
198 B
C

static inline struct pthread *__pthread_self()
{
struct pthread *self;
__asm__ __volatile__ ("movl %%gs:0,%0" : "=r" (self) );
return self;
}
#define TP_ADJ(p) (p)
#define MC_PC gregs[REG_EIP]