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Re: 32 bit jump instruction.

From: David Daney <ddaney at avtrex dot com>
To: Rohit Arul Raj <rohitarulraj at gmail dot com>
Cc: gcc <gcc at gcc dot gnu dot org>
Date: Wed, 06 Dec 2006 22:40:02 -0800
Subject: Re: 32 bit jump instruction.
References: <c356fd4e0612062149p4317cad5ta01ef7f5a24eb10@mail.gmail.com>

Rohit Arul Raj wrote:

Hi all,

I am working on a private target where jump instruction patterns are
similiar to this

jmp <24 bit offset>
jmp <address register> for 32 bit offsets

if my offset is greater than 24 bits, then i have to move the offset
to an address register. But inside the branch instruction (in md
file), i am not able to generate a pseudo register because the
condition check for "no_new_pseudos " fails.

Can any one suggest a way to overcome this?

This is similar to how the MIPS works. Perhaps looking at its implementation would be useful.

David Daney

Follow-Ups:
- Re: 32 bit jump instruction.
  - From: Ian Lance Taylor

References:
- 32 bit jump instruction.
  - From: Rohit Arul Raj

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