From c87728ca82a1057eb8f84e139bf416ca5488b6fb Mon Sep 17 00:00:00 2001
From: David Daney <david.daney@cavium.com>
Date: Tue, 14 Aug 2012 11:08:00 -0700
Subject: [PATCH] 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>
---
include/asm-generic/vmlinux.lds.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 4e2e1cc505ab2f..d1ea7ce0b4cb95 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) \
--
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