musl/arch/m68k/pthread_arch.h

static inline struct pthread *__pthread_self()
{
	uintptr_t tp = __syscall(SYS_get_thread_area);
	return (pthread_t)(tp - 0x7000 - sizeof(struct pthread));
}

#define TLS_ABOVE_TP
#define GAP_ABOVE_TP 0

#define TP_OFFSET 0x7000
#define DTP_OFFSET 0x8000

#define MC_PC gregs[R_PC]
add m68k port three ABIs are supported: the default with 68881 80-bit fpu format and results returned in floating point registers, softfloat-only with the same format, and coldfire fpu with IEEE single/double only. only the first is tested at all, and only under qemu which has fpu emulation bugs. basic functionality smoke tests have been performed for the most common arch-specific breakage via libc-test and qemu user-level emulation. some sysvipc failures remain, but are shared with other big endian archs and will be fixed separately. 2018-06-14 18:26:30 +00:00			`static inline struct pthread *__pthread_self()`
			`{`
			`uintptr_t tp = __syscall(SYS_get_thread_area);`
			`return (pthread_t)(tp - 0x7000 - sizeof(struct pthread));`
			`}`

			`#define TLS_ABOVE_TP`
			`#define GAP_ABOVE_TP 0`

deduplicate TP_ADJ logic out of each arch, replace with TP_OFFSET the only part of TP_ADJ that was not uniquely determined by TLS_ABOVE_TP was the 0x7000 adjustment used mainly on mips and powerpc variants. 2020-08-25 02:04:52 +00:00			`#define TP_OFFSET 0x7000`
add m68k port three ABIs are supported: the default with 68881 80-bit fpu format and results returned in floating point registers, softfloat-only with the same format, and coldfire fpu with IEEE single/double only. only the first is tested at all, and only under qemu which has fpu emulation bugs. basic functionality smoke tests have been performed for the most common arch-specific breakage via libc-test and qemu user-level emulation. some sysvipc failures remain, but are shared with other big endian archs and will be fixed separately. 2018-06-14 18:26:30 +00:00			`#define DTP_OFFSET 0x8000`

			`#define MC_PC gregs[R_PC]`