[PATCH] riscv: Partial implementation of flatten_aggregate

[Aaron Merey]

Hi Mark,

On Wed, Mar 20, 2024 at 11:03 AM Mark Wielaard <mark@klomp.org> wrote:
>
> dwfl_module_return_value_location would fail on riscv for functions
> which return a (small) struct. This patch implements the simplest
> cases of flatten_aggregate in backends/riscv_retval.c. It just handles
> structs containing one or two members of the same base type which fit
> completely or in pieces in one or two general or floating point
> registers.
>
> It also adds a specific test case run-funcretval-struct.sh containing
> small structs of ints, longs, floats and doubles. All these testscases
> now work for riscv. There is already a slightly more extensive
> testcase for this in tests/run-funcretval.sh but that only has a
> testcase for aarch64.

This patch LGTM.  I'm not able to test it myself on riscv but I see that
for the first time a build has successfully passed on the elfutils riscv
trybot [1].

Aaron

[1] https://builder.sourceware.org/buildbot/#/builders/273