linux-kernel - [PATCH] microblaze: extable: Sort the exception table at build time

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Date:	Fri, 20 Dec 2013 10:29:18 +0100
From:	Michal Simek <michal.simek@...inx.com>
To:	linux-kernel@...r.kernel.org, monstr@...str.eu
Cc:	David Daney <david.daney@...ium.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	microblaze-uclinux@...e.uq.edu.au
Subject: [PATCH] microblaze: extable: Sort the exception table at build time

Sort the exception table at build-time rather than during boot.

Microblaze is the same case as AARCH64 that's why
EM_MICROBLAZE conditional check was added to allow
cross-compilation on machines which are not running
the latest libc-dev.

Inspired by AARCH64 commit:
"arm64: extable: sort the exception table at build time"
(sha1: adace89562c7a9645b8dc84f6e1ac7ba8756094e)

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 arch/microblaze/Kconfig | 1 +
 scripts/sortextable.c   | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index e23cccd..8d581ab 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -30,6 +30,7 @@ config MICROBLAZE
 	select MODULES_USE_ELF_RELA
 	select CLONE_BACKWARDS3
 	select CLKSRC_OF
+	select BUILDTIME_EXTABLE_SORT

 config SWAP
 	def_bool n
diff --git a/scripts/sortextable.c b/scripts/sortextable.c
index 7941fbd..cc49062 100644
--- a/scripts/sortextable.c
+++ b/scripts/sortextable.c
@@ -39,6 +39,10 @@
 #define EM_AARCH64	183
 #endif

+#ifndef EM_MICROBLAZE
+#define EM_MICROBLAZE	189
+#endif
+
 static int fd_map;	/* File descriptor for file being modified. */
 static int mmap_failed; /* Boolean flag. */
 static void *ehdr_curr; /* current ElfXX_Ehdr *  for resource cleanup */
@@ -275,6 +279,7 @@ do_file(char const *const fname)
 	case EM_ARCOMPACT:
 	case EM_ARM:
 	case EM_AARCH64:
+	case EM_MICROBLAZE:
 	case EM_MIPS:
 		break;
 	}  /* end switch */
--
1.8.2.3


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