How "arm_gen_constant" Function In arm.c works?

[Prashant Purohit <prashantpurohit025@xxxxxxxxx>]

Hi all,

        As ARM has only 8 bit for immediate value, "arm_gen_constant"
function in "arm.c" is used to generate those value which are not generated
by 8-bit rotation scheme in ARM Processor.

        But my question is how we decide these constants in that function &
how that function proceed or work (i.e the logic behind generating those
constants) as I am not able to get it by just looking at the code.

        Please, help me by giving some more description about how the
function works?

        Any help in this regard is appreciated.

        Thanks in advance.

Regards,
Prashant.
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