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lib: libc: newlib: make sure retargetable locking is enabled in toolchain

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Add build assert to make sure _RETARGETABLE_LOCKING is enabled in
toolchain, When _RETARGETABLE_LOCKING is enabled, "_LOCK_T" is "__lock"
pointer type, otherwise "_LOCK_T" is "int" type, so there will be the
following compile warnings when toolchain doesn't enable
_RETARGETABLE_LOCKING:

zephyr/lib/libc/newlib/libc-hooks.c:416:13: warning: cast to pointer from
integer of different size [-Wint-to-pointer-cast]
  416 |  k_sem_take((struct k_sem *)lock, K_FOREVER);
      |             ^
zephyr/lib/libc/newlib/libc-hooks.c: In function '__retarget_lock_acquire
_recursive':
zephyr/lib/libc/newlib/libc-hooks.c:423:15: warning: cast to pointer from
integer of different size [-Wint-to-pointer-cast]
  423 |  k_mutex_lock((struct k_mutex *)lock, K_FOREVER);
      |               ^
...

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
This commit is contained in:
Jiafei Pan 2022-09-20 15:48:28 +08:00 committed by Fabio Baltieri
parent 97ee180c72
commit d486bd3cfe
1 changed files with 4 additions and 0 deletions
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4
lib/libc/newlib/libc-hooks.c
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@ -305,6 +305,10 @@ void *_sbrk(intptr_t count)
__weak FUNC_ALIAS(_sbrk, sbrk, void *);
#ifdef CONFIG_MULTITHREADING
/* Make sure _RETARGETABLE_LOCKING is enabled in toolchain */
BUILD_ASSERT(IS_ENABLED(_RETARGETABLE_LOCKING), "Retargetable locking must be enabled");
/*
* Newlib Retargetable Locking Interface Implementation
*