Chris Zankel c658eac628 [XTENSA] Add support for configurable registers and coprocessors ... The Xtensa architecture allows to define custom instructions and registers. Registers that are bound to a coprocessor are only accessible if the corresponding enable bit is set, which allows to implement a 'lazy' context switch mechanism. Other registers needs to be saved and restore at the time of the context switch or during interrupt handling. This patch adds support for these additional states: - save and restore registers that are used by the compiler upon interrupt entry and exit. - context switch additional registers unbound to any coprocessor - 'lazy' context switch of registers bound to a coprocessor - ptrace interface to provide access to additional registers - update configuration files in include/asm-xtensa/variant-fsf Signed-off-by: Chris Zankel <chris@zankel.net>		2008-02-13 17:41:43 -08:00
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core.h	[PATCH] xtensa: remove extra header files	2006-12-10 09:55:39 -08:00
tie-asm.h	[XTENSA] Add support for configurable registers and coprocessors	2008-02-13 17:41:43 -08:00
tie.h	[XTENSA] Add support for configurable registers and coprocessors	2008-02-13 17:41:43 -08:00