From: David Daney <david.daney@cavium.com>
Date: Tue, 14 Aug 2012 18:08:00 +0000 (-0700)
Subject: vmlinux.lds.h: Allow architectures to add sections to the front of .bss
X-Git-Tag: v3.7-rc1~1^2~20
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=c87728ca82a1057eb8f84e139bf416ca5488b6fb;p=~emulex%2Finfiniband.git

vmlinux.lds.h: Allow architectures to add sections to the front of .bss

Follow-on MIPS patch will put an object here that needs 64K alignment
to minimize padding.

For those architectures that don't define BSS_FIRST_SECTIONS, there is
no change.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-arch@vger.kernel.org,
Cc: linux-kernel@vger.kernel.org
Acked-by: Arnd Bergmann <arnd@arndb.de>
Patchwork: https://patchwork.linux-mips.org/patch/4221/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 4e2e1cc505a..d1ea7ce0b4c 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -530,9 +530,18 @@
 		*(.scommon)						\
 	}
 
+/*
+ * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
+ * sections to the front of bss.
+ */
+#ifndef BSS_FIRST_SECTIONS
+#define BSS_FIRST_SECTIONS
+#endif
+
 #define BSS(bss_align)							\
 	. = ALIGN(bss_align);						\
 	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {				\
+		BSS_FIRST_SECTIONS					\
 		*(.bss..page_aligned)					\
 		*(.dynbss)						\
 		*(.bss)							\