mailing list of musl libc

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 #include "pthread_impl.h"
#include "libc.h"
#include <elf.h>

/* Also perform sh-specific init */

__attribute__((__visibility__("hidden"))) int __sh2_abi;

int __set_thread_area(void *p)
{
	size_t *aux;
	__asm__ __volatile__ ( "ldc %0, gbr" : : "r"(p) : "memory" );
	for (aux=libc.auxv; *aux; aux+=2) {
		if (*aux != AT_PLATFORM) continue;
		const char *s = (void *)aux[1];
		if (s[0]!='s' || s[1]!='h' || s[2]!='2' || s[3]-'0'<10u) break;
		__sh2_abi = 1;
		break;
	}
	return 0;
}