Re: [PATCH][wwwdocs] gcc-13: Add loongarch '-mexplicit-relocs' support

[Lulu Cheng <chenglulu@loongson.cn>]

在 2022/7/26 下午5:44, Xi Ruoyao 写道:
>
>> +  whether the <code>la.*</code> macro instructions will be generated when
>> +  loading symbolic addresses.
>> +  This feature requires binutils version 2.40 or later. If you want to use the
>> +  older version of bintuils, add compiler parameters
>> +  <code>-mno-explicit-relocs</code> at compile time.
> Does it mean we need to make sure GCC 13 released after binutils-2.40?
> binutils-2.39 release branch is already created and it's now explicitly
> "no new feature" so a backport seems impossible...

Do you think it's okay if we don't write Binutils version restrictions 
now and wait until Binutils code is released to annotate?

>> +  </li>
>> +  <li>The method for calling global functions changed from
>> +  <code>la.global + jirl</code> to <code>bl</code> when complied add
>> +  <code>-fplt</code>.
> "from la.global + jirl to bl with -fno-plt and -mexplicit-relocs"?  With
> "-fplt" GCC 12 is already using bl, and with -mno-explicit-relocs
> la.global is still used (if I read func-call-3.c correctly).
I  should put '-fplt -mexplicit-relocs' here.
>> +  <li>Changed <code>ASM_PREFERRED_EH_DATA_FORMAT</code> macro definition from
>> +  <code>WD_EH_PE_absptr</code> to <code>WD_EH_PE_pcrel | DW_EH_PE_sdata4</code>.
>> +  </li>
> I don't think this paragraph is necessary because this change is purely
> internal.
>
Should we indicate that our .eh_frame section format has changed?


Thanks!