CONFIG_X86_IAMCU

The IAMCU calling convention changes the X86 C calling convention to pass some arguments via registers allowing for code size and performance improvements. Great care needs to be taken if you have assembly code that will be called from C or C code called from assembly code, the assembly code will need to be updated to conform to the new calling convention. If in doubt say N

Symbol:

X86_IAMCU
Type:

bool
Value:

“y”
User value:

(no user value)
Visibility:

“y”
Is choice item:

false
Is defined:

true
Is from env.:

false
Is special:

false
Prompts:
  • “IAMCU calling convention”
Default values:
  • n (value: “n”)
  • Condition: (none)
Selects:

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

SOC_QUARK_D2000 && X86 || SOC_QUARK_SE && X86 (value: “y”)
Additional dependencies from enclosing menus and ifs:
 

X86 (value: “y”)
Locations:
  • ../arch/x86/Kconfig:25