Re: [PATCH 0/5] riscv: SCS support

Sami Tolvanen
2023-08-14T20:19:08Z

On Mon, Aug 14, 2023 at 11:57 AM Sami Tolvanen <samitolvanen@google.com> wrote:
> Looks like __builtin_frame_address behaves differently on RISC-V.
> After staring at the disassembly a bit, using
> __builtin_frame_address(0) - 1 instead of + 1 seems to yield correct
> results.

Elliott was kind enough to point out to me off-list that this behavior
has been documented here:

https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-cc.adoc#frame-pointer-convention

I'll include a patch to fix the test on RISC-V in the next version.

Sami