Commit b95d4fec authored Jul 13, 2005 by Fabio Massimo Di Nitto Committed by Sam Ravnborg Jul 13, 2005

[PATCH] kbuild: modpost needs to cope with new glibc elf header on sparc



Recently a change in the glibc elf.h header has been introduced causing
modpost to spawn tons of warnings (like the one below) building the kernel
on sparc:

[SNIP]
*** Warning: "current_thread_info_reg" [net/sunrpc/auth_gss/auth_rpcgss.ko] undefined!
*** Warning: "" [net/sunrpc/auth_gss/auth_rpcgss.ko] undefined!
*** Warning: "" [net/sunrpc/auth_gss/auth_rpcgss.ko] undefined!
[SNIP]

Ben Collins discovered that the STT_REGISTERED definition in glibc did change
and that this change needs to be propagated to modpost.

glibc change:
-#define STT_REGISTER   13              /* Global register reserved to app. */
+#define STT_SPARC_REGISTER     13      /* Global register reserved to app. */

I did and tested this simple patch to maintain compatibility with newer (>= 2.3.4)
and older (<= 2.3.2) glibc.

Signed-off-by: Fabio M. Di Nitto <fabbione@fabbione.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

parent 6d983fea

scripts/mod/modpost.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -359,11 +359,16 @@ handle_modversions(struct module mod, struct elf_info info,
		/* ignore __this_module, it will be resolved shortly */
		if (strcmp(symname, MODULE_SYMBOL_PREFIX "__this_module") == 0)
		break;
		#ifdef STT_REGISTER
		/* cope with newer glibc (2.3.4 or higher) STT_ definition in elf.h */
		#if defined(STT_REGISTER) \|\| defined(STT_SPARC_REGISTER)
		/* add compatibility with older glibc */
		#ifndef STT_SPARC_REGISTER
		#define STT_SPARC_REGISTER STT_REGISTER
		#endif
		if (info->hdr->e_machine == EM_SPARC \|\|
		info->hdr->e_machine == EM_SPARCV9) {
		/* Ignore register directives. */
		if (ELF_ST_TYPE(sym->st_info) == STT_REGISTER)
		if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
		break;
		}
		#endif