3 Commits

Author	SHA1	Message	Date
Max Filippov	0b5372570b	xtensa: implement call0 ABI support in assembly ... Replace hardcoded register and opcode names with ABI-agnostic macros. Add register save/restore code where necessary. Conditionalize windowed only or call0 only code. Add stack initialization matching _switch_to epilogue to copy_thread. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>	2021-10-18 22:19:35 -07:00
Max Filippov	d6d5f19e21	xtensa: abstract 'entry' and 'retw' in assembly code ... Provide abi_entry, abi_entry_default, abi_ret and abi_ret_default macros that allocate aligned stack frame in windowed and call0 ABIs. Provide XTENSA_SPILL_STACK_RESERVE macro that specifies required stack frame size when register spilling is involved. Replace all uses of 'entry' and 'retw' with the above macros. This makes most of the xtensa assembly code ready for XEA3 and call0 ABI. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>	2019-07-08 10:04:48 -07:00
Max Filippov	478ba61afc	xtensa: add static function tracer support ... Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>	2013-07-08 01:18:57 -07:00