Doubt regarding asmlinkage

[rohan puri]

Hi All,
asmlinkage is used in front of the each system call prototype. For x86 arch
it indicates that the the parameters are on stack instead of the registers
and for x86_64 arch the parameters are in registers only.

Doubt i have is whats the need for 32-bit intel arch to put parameters on
stack and not registers in a way similar to x86_64?

Regards,
Rohan.
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