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zephyr/arch
Nicolas Pitre 0c45b548e2 aarch64: rationalize exception entry/exit code
Each vector slot has room for 32 instructions. The exception context
saving needs 15 instructions already. Rather than duplicating those
instructions in each out-of-line exception routines, let's store
them directly in the vector table. That vector space is otherwise
wasted anyway. Move the z_arm64_enter_exc macro into vector_table.S
as this is the only place where it should be used.

To further reduce code size, let's make z_arm64_exit_exc into a
function of its own to avoid code duplication again. It is put in
vector_table.S as this is the most logical location to go with its
z_arm64_enter_exc counterpart.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2021-03-03 16:26:40 +03:00
..
2021-02-24 08:57:35 -05:00