Date: Tue, 9 Jul 2019 17:30:20 +0000 (UTC) From: adr <adr@SDF.ORG> To: Ian Lepore <ian@freebsd.org> Cc: freebsd-arm@freebsd.org Subject: Re: Flush cpu caches Message-ID: <alpine.NEB.2.21.1907091727150.4147@sdf.lonestar.org> In-Reply-To: <339e38254709b7286ab3b507b615de0ac927ef0b.camel@freebsd.org> References: <alpine.NEB.2.21.1907091634060.3966@sdf.lonestar.org> <339e38254709b7286ab3b507b615de0ac927ef0b.camel@freebsd.org>
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On Tue, 9 Jul 2019, Ian Lepore wrote:
> Date: Tue, 09 Jul 2019 11:20:23 -0600
> From: Ian Lepore <ian@freebsd.org>
> To: adr <adr@SDF.ORG>, freebsd-arm@freebsd.org
> Subject: Re: Flush cpu caches
>
> On Tue, 2019-07-09 at 16:54 +0000, adr wrote:
>> First of all, hello everyone.
>>
>> I'm completely new to FreeBSD (not to BSD). I need to use
>> something like arm_sync_icache(2) on OpenBSD and NetBSD.
>>
>> I'd find what I think I need in machine/cpufunc.h, but the linker
>> can't find any function symbol. I suppose I have to pass a lib to
>> the linker, but no idea which one.
>>
>> Some help?
>>
>> Thanks in advance,
>> adr.
>>
>
> Hmmm, we have a prototype for arm_sync_icache() but no library function
> for it. I'll make a note to look into that asap.
>
> Until I figure out how to add it properly, you could implement it
> locally like this:
>
> #include <machine/sysarch.h>
>
> void arm_sync_icache(u_int addr, int len)
> {
> struct arm_sync_icache_args arg;
>
> arg.addr = (uintptr_t)addr;
> arg.len = (uintptr_t)len;
>
> sysarch(ARM_SYNC_ICACHE, &arg);
> }
>
> -- Ian
>
>
ARM_SYNC_ICACHE
Thanks a lot, that is all I need.
I'll try to not be a pain in the *.
adr.
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