https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118001
Bug ID: 118001
Summary: [avr] Support __flashx as 24-bit named address space
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gjl at gcc dot gnu.org
Target Milestone: ---
Currently, __memx is the only address space that can read from any flash
address, and that supports reading across the 64 KiB flash segment boundaries.
Though __memx may also read from generic space / RAM which makes it more
complicated than required when it's known in advance that only flash locations
will be read.
This can be fixed by a new 24-bit address space __flashx that reads from any
program memory address. __flashx objects should be allocated to .progmemx.data
so that it doesn't eat up the precious lower addresses from, say, progmem.data.
