crosstool-ng/config/arch/arm.in.2

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# ARM specific configuration file
config ARCH_ARM_MODE
string
default "arm" if ARCH_ARM_MODE_ARM
default "thumb" if ARCH_ARM_MODE_THUMB
choice
bool
prompt "Default instruction set mode"
default ARCH_ARM_MODE_ARM
config ARCH_ARM_MODE_ARM
bool
prompt "arm"
help
Defaults to emitting instructions in the ARM mode.
config ARCH_ARM_MODE_THUMB
bool
prompt "thumb (EXPERIMENTAL)"
depends on EXPERIMENTAL
help
Defaults to emitting instructions in the THUMB mode.
endchoice
config ARCH_ARM_INTERWORKING
bool
prompt "Use Thumb-interworking (READ HELP)"
depends on EXPERIMENTAL
help
Excerpt from the gcc manual:
> Generate code which supports calling between the ARM and Thumb
> instruction sets. Without this option the two instruction sets
> cannot be reliably used inside one program. The default is
> [not to use interwork], since slightly larger code is generated
> when [interwork] is specified.
config ARCH_ARM_EABI
bool
prompt "Use EABI"
default y
help
Set up the toolchain so that it generates EABI-compliant binaries.
config ARCH_ARM_ABI_OK
bool
default y
depends on ! ARCH_ARM_EABI
select ARCH_SUPPORTS_WITH_ABI