runtime_exceptions: Save x4-x29 unconditionally
In preparation for SMCCC v1.1 support, save x4 to x29 unconditionally.
Previously we expected callers coming from AArch64 mode to preserve
x8-x17.  This is no longer the case with SMCCC v1.1 as AArch64 callers
only need to save x0-x3.

Change-Id: Ie62d620776533969ff4a02c635422f1b9208be9c
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
1 parent 383c808 commit 201ca5b6b49197a2c22b3bb0b519d63758fff0b7
@Dimitris Papastamos Dimitris Papastamos authored on 22 Jan 2018
Showing 1 changed file
View
bl31/aarch64/runtime_exceptions.S