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kernel: add macros to allow declaring extern stack arrays

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A stack can already be declared extern via K_KERNEL_STACK_EXTERN().
This adds similar macros for stack arrays.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2021-06-02 14:38:05 -07:00 • committed by Kumar Gala
commit c6163e93cb
1 changed files with 45 additions and 0 deletions
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45
include/kernel/thread_stack.h
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@ -122,6 +122,36 @@ static inline char *z_stack_ptr_align(char *ptr)
* @{
*/
/**
* @def K_KERNEL_STACK_ARRAY_EXTERN
* @brief Obtain an extern reference to a stack array
*
* This macro properly brings the symbol of a stack array declared
* elsewhere into scope.
*
* @param sym Thread stack symbol name
* @param nmemb Number of stacks to declare
* @param size Size of the stack memory region
*/
#define K_KERNEL_STACK_ARRAY_EXTERN(sym, nmemb, size) \
extern struct z_thread_stack_element \
sym[nmemb][Z_KERNEL_STACK_LEN(size)]
/**
* @def K_KERNEL_PINNED_STACK_ARRAY_EXTERN
* @brief Obtain an extern reference to a pinned stack array
*
* This macro properly brings the symbol of a pinned stack array
* declared elsewhere into scope.
*
* @param sym Thread stack symbol name
* @param nmemb Number of stacks to declare
* @param size Size of the stack memory region
*/
#define K_KERNEL_PINNED_STACK_ARRAY_EXTERN(sym, nmemb, size) \
extern struct z_thread_stack_element \
sym[nmemb][Z_KERNEL_STACK_LEN(size)]
/**
* @def Z_KERNEL_STACK_DEFINE_IN
* @brief Define a toplevel kernel stack memory region in specified section
@ -272,6 +302,7 @@ static inline char *Z_KERNEL_STACK_BUFFER(k_thread_stack_t *sym)
#define K_THREAD_STACK_MEMBER K_KERNEL_STACK_MEMBER
#define Z_THREAD_STACK_BUFFER Z_KERNEL_STACK_BUFFER
#define K_THREAD_STACK_EXTERN K_KERNEL_STACK_EXTERN
#define K_THREAD_STACK_ARRAY_EXTERN K_KERNEL_STACK_ARRAY_EXTERN
#else
/**
* @def K_THREAD_STACK_RESERVED
@ -371,6 +402,20 @@ static inline char *Z_KERNEL_STACK_BUFFER(k_thread_stack_t *sym)
*/
#define K_THREAD_STACK_EXTERN(sym) extern k_thread_stack_t sym[]
/**
* @brief Obtain an extern reference to a thread stack array
*
* This macro properly brings the symbol of a stack array declared
* elsewhere into scope.
*
* @param sym Thread stack symbol name
* @param nmemb Number of stacks to declare
* @param size Size of the stack memory region
*/
#define K_THREAD_STACK_ARRAY_EXTERN(sym, nmemb, size) \
extern struct z_thread_stack_element \
sym[nmemb][K_THREAD_STACK_LEN(size)]
/**
* @addtogroup thread_stack_api
* @{