On Mon, Jan 11, 2021 at 07:59:52PM -0600, Josh Poimboeuf wrote:
> Right. In the vast majority of cases, .L symbols are totally fine.
>
> The limitation now being imposed by objtool (due to these assembler
> changes) is that all code must be contained in an ELF symbol. And .L
> symbols don't
On Mon, Jan 11, 2021 at 05:13:16PM -0800, Nick Desaulniers wrote:
> Unconditionally. See
> https://sourceware.org/pipermail/binutils/2021-January/114700.html
> where that flag was rejected and the optimization was adopted as the
> optimization was obvious to GNU binutils developers. So I suspect
On Mon, Jan 11, 2021 at 05:13:16PM -0800, Nick Desaulniers wrote:
> On Mon, Jan 11, 2021 at 5:00 PM Borislav Petkov wrote:
> >
> > On Mon, Jan 11, 2021 at 04:41:52PM -0800, Fāng-ruì Sòng wrote:
> > > To be fair: we cannot use
> >
> > Who's "we"?
> >
> > > .L-prefixed local because of the objtool
On Mon, Jan 11, 2021 at 5:00 PM Borislav Petkov wrote:
>
> On Mon, Jan 11, 2021 at 04:41:52PM -0800, Fāng-ruì Sòng wrote:
> > To be fair: we cannot use
>
> Who's "we"?
>
> > .L-prefixed local because of the objtool limitation.
>
> What objtool limitation? I thought clang's assembler removes .text
On Mon, Jan 11, 2021 at 04:41:52PM -0800, Fāng-ruì Sòng wrote:
> To be fair: we cannot use
Who's "we"?
> .L-prefixed local because of the objtool limitation.
What objtool limitation? I thought clang's assembler removes .text which
objtool uses. It worked fine with GNU as so far.
> The LLVM
On Mon, Jan 11, 2021 at 4:38 PM Borislav Petkov wrote:
>
> On Mon, Jan 11, 2021 at 12:38:06PM -0800, Nick Desaulniers wrote:
> > Arnd found a randconfig that produces the warning:
> >
> > arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at
> > offset 0x3e
> >
> > when building
On Mon, Jan 11, 2021 at 12:38:06PM -0800, Nick Desaulniers wrote:
> Arnd found a randconfig that produces the warning:
>
> arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at
> offset 0x3e
>
> when building with LLVM_IAS=1 (use Clang's integrated assembler). Josh
> notes:
>
On Mon, Jan 11, 2021 at 2:09 PM Josh Poimboeuf wrote:
>
> On Mon, Jan 11, 2021 at 12:58:14PM -0800, Fangrui Song wrote:
> > On 2021-01-11, Nick Desaulniers wrote:
> > > Arnd found a randconfig that produces the warning:
> > >
> > > arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for
On Mon, Jan 11, 2021 at 12:38:06PM -0800, Nick Desaulniers wrote:
> Arnd found a randconfig that produces the warning:
>
> arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at
> offset 0x3e
>
> when building with LLVM_IAS=1 (use Clang's integrated assembler). Josh
> notes:
>
On Mon, Jan 11, 2021 at 12:58:14PM -0800, Fangrui Song wrote:
> On 2021-01-11, Nick Desaulniers wrote:
> > Arnd found a randconfig that produces the warning:
> >
> > arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at
> > offset 0x3e
> >
> > when building with LLVM_IAS=1 (use
On 2021-01-11, Nick Desaulniers wrote:
Arnd found a randconfig that produces the warning:
arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at
offset 0x3e
when building with LLVM_IAS=1 (use Clang's integrated assembler). Josh
notes:
With the LLVM assembler stripping the
Arnd found a randconfig that produces the warning:
arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at
offset 0x3e
when building with LLVM_IAS=1 (use Clang's integrated assembler). Josh
notes:
With the LLVM assembler stripping the .text section symbol, objtool
has no way
12 matches
Mail list logo
