Changeset 128359eb in mainline for kernel/arch/arm64/include/arch/context.h

Timestamp:

2020-06-12T16:46:32Z (4 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ffccdff0

Parents:

94e75cf

Message:

Replace get_stack_base() with builtin_frame_address(0)

The usage of an intrinsic function to obtain the current stack pointer
should provide the compuler more room for performance optimizations than
the hand-written (and volatile) inline assembly block.

File:

• kernel/arch/arm64/include/arch/context.h (modified) (1 diff)

kernel/arch/arm64/include/arch/context.h

@@ -41 +41 @@
 #include <arch/stack.h>
 
-/* Put one item onto the stack to support get_stack_base() and align it up. */
+/* Put one item onto the stack to support CURRENT and align it up. */
 #define SP_DELTA  (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))