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--blx_arm_thumb, --no_blx_arm_thumb
Enables the linker to use the BLX instruction for A32 to T32 state changes.
Usage
If the linker cannot use BLX it must use an A32 to T32
interworking veneer to perform the state change.
This option is on by default. It has no effect if the target
architecture does not support BLX or when linking for AArch64 state.