CONFIG_STACK_ALIGN_DOUBLE_WORD

This is needed to conform to AAPCS, the procedure call standard for the ARM. It wastes stack space.

Symbol:

STACK_ALIGN_DOUBLE_WORD
Type:

bool
Value:

“n”
User value:

(no user value)
Visibility:

“n”
Is choice item:

false
Is defined:

true
Is from env.:

false
Is special:

false
Prompts:
  • “Align stacks on double-words (8 octets)”
Default values:
  • y (value: “y”)
  • Condition: (none)
Selects:

(no selects)
Reverse (select-related) dependencies:
 

(no reverse dependencies)
Additional dependencies from enclosing menus and ifs:
 

CPU_CORTEX_M && ARM && CPU_CORTEX_M (value: “n”)
Locations:
  • ../arch/arm/core/cortex_m/Kconfig:56