Georg-Johann Lay <a...@gjlay.de> writes: > Hi, > > This patch adds support for devices that can access flash memory > by LD* instructions, hence there is no need to put .rodata in RAM. > > The default linker script for the new multilib versions already > supports this feature, it's similar to avrtiny, cf. > > https://sourceware.org/PR21472 > > This patch does the following: > > * Add multilib variants avrxmega3 and avrxmega3/short-calls. > > * Add new option -mshort-calls for multilib selection between > devices with <= 8KiB flash and > 8KiB flash. > > * Add specs handling for -mshort-calls: The compiler knows > if this option is needed or not appropriate (similar to -msp8). > > * Add new ISA feature AVR_ISA_RCALL for multilib selection > via -mshort-calls. > > * Add a new row to architecture description that contains the > start address of flash memory in the RAM address range. > (The actual value is not needed). > > * For devices with flash in RAM space, don't let .rodata > objects trigger need for __do_copy_data. > > * Add some devices. > > * Add configure test for Binutils PR21472.
Sorry if this has already been discussed, but it's useful to be able to do things like: .../configure --target=avr-elf --with-cpu=arc700 make -j... all-gcc as a basic sanity test of a pan-target patch. (I usually do before-and-after assembly comparisons too if no changes are expected.) The way the configure test is written means that it's no longer possible to do this without first building a trunk version of binutils for avr-elf. Thanks, Richard
