Apple Darwin on PPC has its own ABI.
The Power Mac G5 processor (PPC970) supported the initial Altivec ISA.
Thanks, David
On Wed, Dec 2, 2020 at 1:47 PM Niels Möller wrote:
>
> David Edelsohn writes:
>
> > I thought that you were asking in general. All PowerPC ABI, except the
> > original 32 b
David Edelsohn writes:
> I thought that you were asking in general. All PowerPC ABI, except the
> original 32 bit ELF ABI, allow a red zone below the stack pointer.
> For other architectures, one needs to check each ABI.
Do any of you know what ABI was used on Macs with 64-bit powerpc
processors
Hi, Maamoun
I thought that you were asking in general. All PowerPC ABI, except the
original 32 bit ELF ABI, allow a red zone below the stack pointer.
For other architectures, one needs to check each ABI.
Thanks, David
On Wed, Dec 2, 2020 at 12:57 PM Maamoun TK wrote:
>
> I can't find a document
I can't find a document other than 64-bit elf v2 abi specification
https://openpowerfoundation.org/?resource_lib=64-bit-elf-v2-abi-specification-power-architecture
which say it's safe to use the 288-byte volatile storage below the stack
pointer to hold saved registers and local variables.
However,
On Wed, Dec 2, 2020 at 9:41 AM Maamoun TK wrote:
>
> On Tue, Dec 1, 2020 at 8:02 PM Niels Möller wrote:
>
> > How portable is this, do all relevant operating systems support storing
> > data below the stack pointer?
> >
>
> I need to investigate this.
It's dependent upon the ABI.
Thanks, David
On Tue, Dec 1, 2020 at 8:02 PM Niels Möller wrote:
> How portable is this, do all relevant operating systems support storing
> data below the stack pointer?
>
I need to investigate this.
regards,
Mamone
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