From f81e44a0d96c88e052e51982f9fdd6fe0a212b46 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 14 Jun 2018 14:26:30 -0400 Subject: 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. --- arch/m68k/atomic_arch.h | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 arch/m68k/atomic_arch.h (limited to 'arch/m68k/atomic_arch.h') diff --git a/arch/m68k/atomic_arch.h b/arch/m68k/atomic_arch.h new file mode 100644 index 00000000..b369649a --- /dev/null +++ b/arch/m68k/atomic_arch.h @@ -0,0 +1,8 @@ +#define a_cas a_cas +static inline int a_cas(volatile int *p, int t, int s) +{ + __asm__ __volatile__ ( + "cas.l %0, %2, (%1)" + : "+d"(t) : "a"(p), "d"(s) : "memory", "cc"); + return t; +} -- cgit 1.4.1