musl/arch/sh/pthread_arch.h

static inline struct pthread *__pthread_self()
{
	char *self;
	__asm__ __volatile__ ("stc gbr,%0" : "=r" (self) );
	return (struct pthread *) (self + 8 - sizeof(struct pthread));
}

#define TLS_ABOVE_TP
#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 8)

#define MC_PC sc_pc
superh port 2013-10-05 05:13:18 -05:00			`static inline struct pthread *__pthread_self()`
			`{`
			`char *self;`
			`__asm__ __volatile__ ("stc gbr,%0" : "=r" (self) );`
			`return (struct pthread *) (self + 8 - sizeof(struct pthread));`
			`}`

			`#define TLS_ABOVE_TP`
			`#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 8)`

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 12:39:28 -05:00			`#define MC_PC sc_pc`