[PATCH] discard *.exit.text and *.exit.data sections
Eugene Surovegin
ebs at ebshome.net
Mon Sep 5 15:46:03 EST 2005
Discard *.exit.text sections on runtime. We cannot do this on link
time because of the way BUG macros are implemented. If "__exit
function" calls one of those macros, __bug_table section will
reference this function. This is similar to ".altinstructions"
situation on i386.
*.exit.data seems to be OK in this respect and is discarded on link
time.
Signed-off-by: Eugene Surovegin <ebs at ebshome.net>
diff --git a/arch/ppc/kernel/vmlinux.lds.S b/arch/ppc/kernel/vmlinux.lds.S
--- a/arch/ppc/kernel/vmlinux.lds.S
+++ b/arch/ppc/kernel/vmlinux.lds.S
@@ -96,6 +96,9 @@ SECTIONS
*(.init.text)
_einittext = .;
}
+ /* .exit.text is discarded at runtime, not link time,
+ to deal with references from __bug_table */
+ .exit.text : { *(.exit.text) }
.init.data : {
*(.init.data);
__vtop_table_begin = .;
@@ -190,5 +193,6 @@ SECTIONS
/* Sections to be discarded. */
/DISCARD/ : {
*(.exitcall.exit)
+ *(.exit.data)
}
}
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