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linux-next/arch/ppc/kernel/vmlinux.lds.S
Tom Rini 6a00cbfcf8 [PATCH] ppc32: discard *.exit.text and *.exit.data sections
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@ebshome.net>
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:28 -07:00

199 lines
4.0 KiB
ArmAsm

#include <asm-generic/vmlinux.lds.h>
OUTPUT_ARCH(powerpc:common)
jiffies = jiffies_64 + 4;
SECTIONS
{
/* Read-only sections, merged into text segment: */
. = + SIZEOF_HEADERS;
.interp : { *(.interp) }
.hash : { *(.hash) }
.dynsym : { *(.dynsym) }
.dynstr : { *(.dynstr) }
.rel.text : { *(.rel.text) }
.rela.text : { *(.rela.text) }
.rel.data : { *(.rel.data) }
.rela.data : { *(.rela.data) }
.rel.rodata : { *(.rel.rodata) }
.rela.rodata : { *(.rela.rodata) }
.rel.got : { *(.rel.got) }
.rela.got : { *(.rela.got) }
.rel.ctors : { *(.rel.ctors) }
.rela.ctors : { *(.rela.ctors) }
.rel.dtors : { *(.rel.dtors) }
.rela.dtors : { *(.rela.dtors) }
.rel.bss : { *(.rel.bss) }
.rela.bss : { *(.rela.bss) }
.rel.plt : { *(.rel.plt) }
.rela.plt : { *(.rela.plt) }
/* .init : { *(.init) } =0*/
.plt : { *(.plt) }
.text :
{
*(.text)
SCHED_TEXT
LOCK_TEXT
*(.fixup)
*(.got1)
__got2_start = .;
*(.got2)
__got2_end = .;
}
_etext = .;
PROVIDE (etext = .);
RODATA
.fini : { *(.fini) } =0
.ctors : { *(.ctors) }
.dtors : { *(.dtors) }
.fixup : { *(.fixup) }
__ex_table : {
__start___ex_table = .;
*(__ex_table)
__stop___ex_table = .;
}
__bug_table : {
__start___bug_table = .;
*(__bug_table)
__stop___bug_table = .;
}
/* Read-write section, merged into data segment: */
. = ALIGN(4096);
.data :
{
*(.data)
*(.data1)
*(.sdata)
*(.sdata2)
*(.got.plt) *(.got)
*(.dynamic)
CONSTRUCTORS
}
. = ALIGN(4096);
__nosave_begin = .;
.data_nosave : { *(.data.nosave) }
. = ALIGN(4096);
__nosave_end = .;
. = ALIGN(32);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }
_edata = .;
PROVIDE (edata = .);
. = ALIGN(8192);
.data.init_task : { *(.data.init_task) }
. = ALIGN(4096);
__init_begin = .;
.init.text : {
_sinittext = .;
*(.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 = .;
*(.vtop_fixup);
__vtop_table_end = .;
__ptov_table_begin = .;
*(.ptov_fixup);
__ptov_table_end = .;
}
. = ALIGN(16);
__setup_start = .;
.init.setup : { *(.init.setup) }
__setup_end = .;
__initcall_start = .;
.initcall.init : {
*(.initcall1.init)
*(.initcall2.init)
*(.initcall3.init)
*(.initcall4.init)
*(.initcall5.init)
*(.initcall6.init)
*(.initcall7.init)
}
__initcall_end = .;
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
__start___ftr_fixup = .;
__ftr_fixup : { *(__ftr_fixup) }
__stop___ftr_fixup = .;
. = ALIGN(32);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
. = ALIGN(4096);
__init_end = .;
. = ALIGN(4096);
_sextratext = .;
__pmac_begin = .;
.pmac.text : { *(.pmac.text) }
.pmac.data : { *(.pmac.data) }
. = ALIGN(4096);
__pmac_end = .;
. = ALIGN(4096);
__prep_begin = .;
.prep.text : { *(.prep.text) }
.prep.data : { *(.prep.data) }
. = ALIGN(4096);
__prep_end = .;
. = ALIGN(4096);
__chrp_begin = .;
.chrp.text : { *(.chrp.text) }
.chrp.data : { *(.chrp.data) }
. = ALIGN(4096);
__chrp_end = .;
. = ALIGN(4096);
__openfirmware_begin = .;
.openfirmware.text : { *(.openfirmware.text) }
.openfirmware.data : { *(.openfirmware.data) }
. = ALIGN(4096);
__openfirmware_end = .;
_eextratext = .;
__bss_start = .;
.bss :
{
*(.sbss) *(.scommon)
*(.dynbss)
*(.bss)
*(COMMON)
}
__bss_stop = .;
_end = . ;
PROVIDE (end = .);
/* Sections to be discarded. */
/DISCARD/ : {
*(.exitcall.exit)
*(.exit.data)
}
}