CONFIG_IRQ_VECTOR_TABLE_CUSTOM

Projects, not the BSP, provide the IRQ part of the vector table.

This is the table of interrupt handlers with the best potential performance, but is the less flexible.

The ISRs are installed directly in the vector table, thus are directly called by the CPU when an interrupt is taken. This adds the least overhead when handling an interrupt.

Downsides:

  • ISRs cannot have a parameter
  • ISRs cannot be connected at runtime
  • ISRs must notify the kernel manually by invoking _ExcExit() when then are about to return.
Symbol:

IRQ_VECTOR_TABLE_CUSTOM
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:
  • “Projects provide a custom static IRQ part of vector table” if !SW_ISR_TABLE (value: “y”)
  • “Projects provide a custom static IRQ part of vector table” if !SW_ISR_TABLE (value: “y”)
Default values:
  • n (value: “n”)
  • Condition: !SW_ISR_TABLE (value: “y”)
  • n (value: “n”)
  • Condition: !SW_ISR_TABLE (value: “y”)
Selects:

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

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

ARC (value: “n”)
Locations:
  • ../arch/arm/core/cortex_m/Kconfig:192
  • ../arch/arc/Kconfig:245