musl/arch/mips/pthread_arch.h

static inline struct pthread *__pthread_self()
{
	struct pthread *self;
	__asm__ __volatile__ (".word 0x7c03e83b" : "=v" (self) );
	return self;
}

#define CANCEL_REG_IP (3-(union {int __i; char __b;}){1}.__b)
initial version of mips (o32) port, based on work by Richard Pennington (rdp) basically, this version of the code was obtained by starting with rdp's work from his ellcc source tree, adapting it to musl's build system and coding style, auditing the bits headers for discrepencies with kernel definitions or glibc/LSB ABI or large file issues, fixing up incompatibility with the old binutils from aboriginal linux, and adding some new special cases to deal with the oddities of sigaction and pipe syscall interfaces on mips. at present, minimal test programs work, but some interfaces are broken or missing. threaded programs probably will not link. 2012-07-11 08:22:13 +00:00			`static inline struct pthread *__pthread_self()`
			`{`
			`struct pthread *self;`
			`__asm__ __volatile__ (".word 0x7c03e83b" : "=v" (self) );`
			`return self;`
			`}`

mipsel (little endian) support the fields in the mcontext_t are long long (for no good reason) even on 32-bit mips, so the offset of the instruction pointer (as a word) varies depending on endianness. 2012-07-13 01:49:30 +00:00			`#define CANCEL_REG_IP (3-(union {int __i; char __b;}){1}.__b)`