Max Filippov 3ae908c99e xtensa: provide custom CALLER_ADDR* implementations ... Definition of CALLER_ADDR* through __builtin_return_address makes compiler insert calls to __xtensa_libgcc_window_spill, which in turn makes fast_syscall_spill_registers syscall that clobbers registers when called from the kernel mode, leading to invalid opcode exceptions on return to userspace. Provide definition for CALLER_ADDR0 as MAKE_PC_FROM_RA(a0, a1) and in case CONFIG_FRAME_POINTER is enabled extract CALLER_ADDR{1-3} from stack. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>		2013-05-09 01:07:10 -07:00
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asm	xtensa: provide custom CALLER_ADDR* implementations	2013-05-09 01:07:10 -07:00
uapi/asm	Changes for arch/xtensa for the 3.9 merge window.	2013-02-26 19:53:12 -08:00