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kernel: tickless: Rename _Swap to allow creation of macro

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Future tickless kernel patches would be inserting some
code before call to Swap. To enable this it will create
a mcro named as the current _Swap which would call first
the tickless kernel code and then call the real __swap()

Jira: ZEP-339
Change-Id: Id778bfcee4f88982c958fcf22d7f04deb4bd572f
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
This commit is contained in:
Ramesh Thomas 2017-04-06 15:30:27 -07:00 • committed by Anas Nashif
commit 62eea121b3
9 changed files with 70 additions and 68 deletions
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10
arch/nios2/core/swap.S
View file

@ -9,18 +9,18 @@
#include <offsets_short.h>
/* exports */
GTEXT(_Swap)
GTEXT(__swap)
GTEXT(_thread_entry_wrapper)
/* imports */
GTEXT(_sys_k_event_logger_context_switch)
GTEXT(_k_neg_eagain)
/* unsigned int _Swap(unsigned int key)
/* unsigned int __swap(unsigned int key)
*
* Always called with interrupts locked
*/
SECTION_FUNC(exception.other, _Swap)
SECTION_FUNC(exception.other, __swap)
/* Get a reference to _kernel in r10 */
movhi r10, %hi(_kernel)
@ -30,7 +30,7 @@ SECTION_FUNC(exception.other, _Swap)
ldw r11, _kernel_offset_to_current(r10)
/* Store all the callee saved registers. We either got here via
* an exception or from a cooperative invocation of _Swap() from C
* an exception or from a cooperative invocation of __swap() from C
* domain, so all the caller-saved registers have already been
* saved by the exception asm or the calling C code already.
*/
@ -93,7 +93,7 @@ SECTION_FUNC(exception.other, _Swap)
ldw sp, _thread_offset_to_sp(r2)
/* We need to irq_unlock(current->coopReg.key);
* key was supplied as argument to _Swap(). Fetch it.
* key was supplied as argument to __swap(). Fetch it.
*/
ldw r3, _thread_offset_to_key(r2)