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    Subject[PATCH 4.19 042/113] genksyms: Teach parser about 128-bit built-in types
    Date
    [ Upstream commit a222061b85234d8a44486a46bd4df7e2cda52385 ]

    __uint128_t crops up in a few files that export symbols to modules, so
    teach genksyms about it and the other GCC built-in 128-bit integer types
    so that we don't end up skipping the CRC generation for some symbols due
    to the parser failing to spot them:

    | WARNING: EXPORT symbol "kernel_neon_begin" [vmlinux] version
    | generation failed, symbol will not be versioned.
    | ld: arch/arm64/kernel/fpsimd.o: relocation R_AARCH64_ABS32 against
    | `__crc_kernel_neon_begin' can not be used when making a shared
    | object
    | ld: arch/arm64/kernel/fpsimd.o:(.data+0x0): dangerous relocation:
    | unsupported relocation

    Reported-by: Arnd Bergmann <arnd@arndb.de>
    Signed-off-by: Will Deacon <will.deacon@arm.com>
    Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    scripts/genksyms/keywords.c | 4 ++++
    scripts/genksyms/parse.y | 2 ++
    2 files changed, 6 insertions(+)

    diff --git a/scripts/genksyms/keywords.c b/scripts/genksyms/keywords.c
    index 9f40bcd17d07..f6956aa41366 100644
    --- a/scripts/genksyms/keywords.c
    +++ b/scripts/genksyms/keywords.c
    @@ -24,6 +24,10 @@ static struct resword {
    { "__volatile__", VOLATILE_KEYW },
    { "__builtin_va_list", VA_LIST_KEYW },

    + { "__int128", BUILTIN_INT_KEYW },
    + { "__int128_t", BUILTIN_INT_KEYW },
    + { "__uint128_t", BUILTIN_INT_KEYW },
    +
    // According to rth, c99 defines "_Bool", __restrict", __restrict__", "restrict". KAO
    { "_Bool", BOOL_KEYW },
    { "_restrict", RESTRICT_KEYW },
    diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
    index 00a6d7e54971..1ebcf52cd0f9 100644
    --- a/scripts/genksyms/parse.y
    +++ b/scripts/genksyms/parse.y
    @@ -76,6 +76,7 @@ static void record_compound(struct string_list **keyw,
    %token ATTRIBUTE_KEYW
    %token AUTO_KEYW
    %token BOOL_KEYW
    +%token BUILTIN_INT_KEYW
    %token CHAR_KEYW
    %token CONST_KEYW
    %token DOUBLE_KEYW
    @@ -263,6 +264,7 @@ simple_type_specifier:
    | VOID_KEYW
    | BOOL_KEYW
    | VA_LIST_KEYW
    + | BUILTIN_INT_KEYW
    | TYPE { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
    ;

    --
    2.20.1


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