Changeset 128359eb in mainline for kernel/arch/ia32/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/ia32/include/arch/context.h (modified) (1 diff)

kernel/arch/ia32/include/arch/context.h

@@ -45 +45 @@
  * First for pop of the saved register, second during ret instruction.
  *
- * One item is put onto stack to support get_stack_base().
+ * One item is put onto stack to support CURRENT.
  */
 #define SP_DELTA  (8 + STACK_ITEM_SIZE)