The multi-build.in file in libgloss duplicates common multilib logic
in the root source tree. Document it a bit, and rename the rule so
it doesn't clash with the common multi-do rule. This will let us use
them in the same makefile so we can merge aarch64/ & arm/ up (as the
only targets that use this local multi-build.in atm).
This patch adds support for Armv8-R AArch64.
Armv8-R AArch64 has no EL3, so we don't set vbar_el3, and adjust the
code to set up the MPU for Armv8-R. So build a different flavour of the
startup code to support that.
We also add a specs file that uses this alternative startup code which
can be used with Armv8-R AArch64 models.
On AArch64 we currently always link in crt0 regardless of if another
one is being provided by something else, like rdimon.a. This was never
an issue before as nosys was not supported on AArch64.
This updates the specs to supply a different crt0 when a semihosting
call is required.
Signed-off-by: Tamar Christina <tamar.christina@arm.com>
This fixed the compile for nosys and validation specs
but nosys won't run because of existing limitations to
aarch64's syscalls.c, it requires semihosting to get
commandline arguments and heap info without having a
fallback method as ARM does.
Signed-off-by: Tamar Christina <tamar.christina@arm.com>
This uses the new recursive build target in multi-build.in
For AArch64 no new spec files are needed but the makefiles
are modified to keep them in sync with the ARM ones.
Signed-off-by: Tamar Christina <tamar.christina@arm.com>
* aarch64/Machine.in (RDIMON_SCRIPTS):
Add aem-ve.specs and aem-validation.specs.
* aarch64/elf-aem-validation.specs: New file.
* aarch64/elf-aem-ve.specs: New file.
Mike Frysinger
Alex Coplan via Newlib
Tamar Christina
Richard Earnshaw
Marcus Shawcroft
Jeff Johnston