[OpenBIOS] [PATCH] SPARC32: implement full context switch
Mark Cave-Ayland
mark.cave-ayland at ilande.co.uk
Sun Aug 21 17:13:20 CEST 2016
The existing SPARC32 context switch logic was only partially complete in
that it wouldn't save/restore all the register windows. This patch
updates the context switch code to save the full CPU state and is enough
to allow a switch and return to an arbitrary PC address in testing.
This is a precursor to fixing up the load/init-program logic so that clients
are able access and alter their own context from Forth.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
Mark Cave-Ayland (1):
SPARC32: implement full context switch logic in switch_to()
arch/sparc32/boot.h | 2 +-
arch/sparc32/context.c | 8 +-
arch/sparc32/context.h | 6 +-
arch/sparc32/cpustate.h | 160 ++++++++++++++++++++++++++++++++++++++++
arch/sparc32/entry.S | 26 ++++++-
arch/sparc32/switch.S | 187 +++++++++++++++--------------------------------
6 files changed, 249 insertions(+), 140 deletions(-)
create mode 100644 arch/sparc32/cpustate.h
--
1.7.10.4
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