Seebs <seebs-59mtl4g6zbfeowh0uzb...@public.gmane.org> writes:
> On Tue, 27 Mar 2018 16:42:03 +0200
> Enrico Scholz
> <enrico.scholz-wttK6gPy29v+Hn7q9Vec/7nah6klm...@public.gmane.org> wrote:
>
>> will work to wrap syscall(2). Params for _renameat2_syscall() can be
>> extracted by va_args.
>
> Does anyone have access to an actual 64-bit EABI ARM system to verify
> the argument passing for renameat2 there?
Does this really matter here? Because the caller has to set them
accordingly the ABI, you can extract the arguments by
int olddirfd = va_arg(ap, int);
char const *oldpath = va_arg(ap, char consr *);
int newdirfd = va_arg(ap, int);
char const *newpath = va_arg(ap, char consr *);
unsigned int flags = va_arg(ap, unsigned int);
There are no 64 bit arguments (on 32 bit platforms) which might require a
special treatment as described in [1] "Architecture-specific requirements".
Enrico
Footnotes:
[1] http://man7.org/linux/man-pages/man2/syscall.2.html
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