Changeset 128359eb in mainline for kernel/generic/src/proc/thread.c

Timestamp:

2020-06-12T16:46:32Z (5 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/generic/src/proc/thread.c (modified) (1 diff)

kernel/generic/src/proc/thread.c

@@ -191 +191 @@
         kmflags &= ~FRAME_HIGHMEM;
 
-        // NOTE: All kernel stacks must be aligned to STACK_SIZE,
-        //       see get_stack_base().
+        /*
+         * NOTE: All kernel stacks must be aligned to STACK_SIZE,
+         *       see CURRENT.
+         */
 
         uintptr_t stack_phys =