diff options
author | dp-arm <dimitris.papastamos@arm.com> | 2017-05-05 12:21:03 +0100 |
---|---|---|
committer | dp-arm <dimitris.papastamos@arm.com> | 2017-05-24 14:23:08 +0100 |
commit | 22fa58cbfaa99a6458247c713bd03c2cac2a68fe (patch) | |
tree | 04066a787a05ba29ddbb1a1738f5875daecdcef1 | |
parent | e715e676e36eda6ef23469b63adb14a98ccce3e0 (diff) |
Use a callee-saved register to be AAPCS-compliant
x8 is not a callee-saved register and can be corrupted.
Use x19 instead to be AAPCS-compliant.
Fixes ARM-software/tf-issues#478
Change-Id: Ib4f114c36f4c11351ae856f953c45dca92b27c3b
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
-rw-r--r-- | lib/cpus/aarch64/cpu_helpers.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/cpus/aarch64/cpu_helpers.S b/lib/cpus/aarch64/cpu_helpers.S index 7ad0bc75..23845534 100644 --- a/lib/cpus/aarch64/cpu_helpers.S +++ b/lib/cpus/aarch64/cpu_helpers.S @@ -259,8 +259,8 @@ func print_errata_status /* * Printing errata status requires atomically testing the printed flag. */ - stp x8, x30, [sp, #-16]! - mov x8, x0 + stp x19, x30, [sp, #-16]! + mov x19, x0 /* * Load pointers to errata lock and printed flag. Call @@ -270,8 +270,8 @@ func print_errata_status ldr x0, [x1, #CPU_ERRATA_LOCK] ldr x1, [x1, #CPU_ERRATA_PRINTED] bl errata_needs_reporting - mov x1, x8 - ldp x8, x30, [sp], #16 + mov x1, x19 + ldp x19, x30, [sp], #16 cbnz x0, .Lprint #endif .Lnoprint: |