Displaying 2 results from an estimated 2 matches for "bpf_store_bytes".
2015 Aug 06
2
[LLVMdev] Cc llvmdev: Re: llvm bpf debug info. Re: [RFC PATCH v4 3/3] bpf: Introduce function for outputing data to perf event
...ork for me at first since in my llvm there's only
> llvm.bpf.load.*.
>
> I think llvm.bpf.store.* belone to some patches you haven't posted yet?
nope. only loads have special instructions ld_abs/ld_ind
which are represented by these intrinsics.
stores, so far, are done via single bpf_store_bytes() helper function.
> >the typeid changing ids with order is surprising.
> >I think the assertion in ExtractTypeInfo() is not hard.
> >Just there were no such use cases. May be we can do something
> >similar to what LowerIntrinsicCall() does and lower it differently
> >...
2015 Aug 05
2
[LLVMdev] Cc llvmdev: Re: llvm bpf debug info. Re: [RFC PATCH v4 3/3] bpf: Introduce function for outputing data to perf event
On 8/4/15 11:51 PM, Wangnan (F) wrote:
> void bpf_store_half(void *skb, int off, int val)
> asm("llvm.bpf.store.half");
> int func()
> {
> bpf_store_half(0, 0, 0);
> return 0;
> }
>
> Compiled with:
>
> $ clang -g -target bpf -O2 -S -c test.c
>
> And get this:
>
> .text
> .globl func
> .align