Re: [PATCH 1/3] scripts/sorttable: Change section type of orc_lookup to SHT_PROGBITS

From: Ingo Molnar
Date: Thu Aug 06 2020 - 12:36:53 EST



* changhuaixin <changhuaixin@xxxxxxxxxxxxxxxxx> wrote:

> Hi, Ingo
>
> Another way to write SHT_PROGBITS is using elf_create_section to write orc_lookup table headers, when orc_unwind_ip table and orc_unwind table are written. Is this a better solution?
>
> diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
> index 3f98dcfbc177..860d4dcec8e6 100644
> --- a/tools/objtool/orc_gen.c
> +++ b/tools/objtool/orc_gen.c
> @@ -183,6 +183,10 @@ int create_orc_sections(struct objtool_file *file)
> u_sec = elf_create_section(file->elf, ".orc_unwind",
> sizeof(struct orc_entry), idx);
>
> + /* make flags of section orc_lookup right */
> + if (!elf_create_section(file->elf, ".orc_lookup", sizeof(int), 0))
> + return -1;
> +
> /* populate sections */
> idx = 0;
> for_each_sec(file, sec) {

Looks much nicer IMO.

Mind turning this into a proper patch that does it plus reverts the
hack?

Thanks,

Ingo