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Date: Fri, 12 Oct 2007 17:38:00 -0000
From: Pedro Alves <pedro_alves@portugalmail.pt>
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To: Joel Brobecker <brobecker@adacore.com>
CC: Eli Zaretskii <eliz@gnu.org>, Daniel Jacobowitz <drow@false.org>,   Kai.Tietz@onevision.com,  gdb@sourceware.org
Subject: Re: Support of gdb for Windows 64 native systems
References: <20071011142348.GA18239@caradoc.them.org> <OF95FA8571.7CFDF0D1-ONC1257371.0050CA75-C1257371.005140B3@onevision.de> <20071011145549.GA19918@caradoc.them.org> <u4pgwn2md.fsf@gnu.org> <20071012161132.GE4044@adacore.com>
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Thinking only of the target part of the story, and assuming the
debug API is similar, the x64/i386 support in GDB
could be done similarly to how x86/arm is split in gdbserver.

It would probably be much easier to start with porting gdbserver
and cross-debugging.  gdbserver already supports x86 mingw.

Take a look at win32-low.c, win32-i386-low.c and win32-arm-low.c
in gdb/gdbserver/.  On the gdb side, you would need at
least a gdb/x64-(mingw|win32)-tdep.c and/or a i386-(mingw|win32)-tdep.c.

Cheers,
Pedro Alves