Commit a222061b authored Jun 18, 2019 by Will Deacon Committed by Masahiro Yamada Jun 24, 2019

genksyms: Teach parser about 128-bit built-in types



__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>

parent 4df607cc

scripts/genksyms/keywords.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,10 @@ 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 },

scripts/genksyms/parse.y

+2 −0

Original line number	Diff line number	Diff line
		@@ -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; }
		;

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