On 05/09/2011 07:28 AM, Ralf Baechle wrote:
On Mon, Feb 21, 2011 at 07:45:41PM +0000, Richard Sandiford wrote:
David Daney<ddaney@xxxxxxxxxxxxxxxxxx> writes:
Background:
Current MIPS 32-bit ABIs (both o32 and n32) are restricted to 2GB of
user virtual memory space. This is due the way MIPS32 memory space is
segmented. Only the range from 0..2^31-1 is available. Pointer
values are always sign extended.
Because there are not already enough MIPS ABIs, I present the ...
Proposal: A new ABI to support 4GB of address space with 32-bit
pointers.
FWIW, I'd be happy to see this go into GCC.
So am I for the kernel primarily because it's not really a new ABI but
an enhancement of the existing N32 ABI.
The patches are resting peacefully on my laptop. Now with endorcements
like these, I may be forced to actually finish them...
David Daney
