linux/arch/c6x/kernel/vmlinux.lds.S
Kees Cook 1e51cd5388 c6x: Move EXCEPTION_TABLE to RO_DATA segment
Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-alpha@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-ia64@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: Mark Salter <msalter@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: https://lkml.kernel.org/r/20191029211351.13243-20-keescook@chromium.org
2019-11-04 18:10:58 +01:00

152 lines
2.2 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
/*
* ld script for the c6x kernel
*
* Copyright (C) 2010, 2011 Texas Instruments Incorporated
* Mark Salter <msalter@redhat.com>
*/
#define RO_EXCEPTION_TABLE_ALIGN 16
#include <asm-generic/vmlinux.lds.h>
#include <asm/thread_info.h>
#include <asm/page.h>
ENTRY(_c_int00)
#if defined(CONFIG_CPU_BIG_ENDIAN)
jiffies = jiffies_64 + 4;
#else
jiffies = jiffies_64;
#endif
#define READONLY_SEGMENT_START \
. = PAGE_OFFSET;
#define READWRITE_SEGMENT_START \
. = ALIGN(128); \
_data_lma = .;
SECTIONS
{
/*
* Start kernel read only segment
*/
READONLY_SEGMENT_START
.vectors :
{
_vectors_start = .;
*(.vectors)
. = ALIGN(0x400);
_vectors_end = .;
}
/*
* This section contains data which may be shared with other
* cores. It needs to be a fixed offset from PAGE_OFFSET
* regardless of kernel configuration.
*/
.virtio_ipc_dev :
{
*(.virtio_ipc_dev)
}
. = ALIGN(PAGE_SIZE);
__init_begin = .;
.init :
{
_sinittext = .;
HEAD_TEXT
INIT_TEXT
_einittext = .;
}
INIT_DATA_SECTION(16)
PERCPU_SECTION(128)
. = ALIGN(PAGE_SIZE);
__init_end = .;
.text :
{
_text = .;
_stext = .;
TEXT_TEXT
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
KPROBES_TEXT
*(.fixup)
*(.gnu.warning)
}
RO_DATA(PAGE_SIZE)
.const :
{
*(.const .const.* .gnu.linkonce.r.*)
*(.switch)
}
_etext = .;
/*
* Start kernel read-write segment.
*/
READWRITE_SEGMENT_START
_sdata = .;
.fardata : AT(ADDR(.fardata) - LOAD_OFFSET)
{
INIT_TASK_DATA(THREAD_SIZE)
NOSAVE_DATA
PAGE_ALIGNED_DATA(PAGE_SIZE)
CACHELINE_ALIGNED_DATA(128)
READ_MOSTLY_DATA(128)
DATA_DATA
CONSTRUCTORS
*(.data1)
*(.fardata .fardata.*)
*(.data.debug_bpt)
}
.neardata ALIGN(8) : AT(ADDR(.neardata) - LOAD_OFFSET)
{
*(.neardata2 .neardata2.* .gnu.linkonce.s2.*)
*(.neardata .neardata.* .gnu.linkonce.s.*)
. = ALIGN(8);
}
BUG_TABLE
_edata = .;
__bss_start = .;
SBSS(8)
BSS(8)
.far :
{
. = ALIGN(8);
*(.dynfar)
*(.far .far.* .gnu.linkonce.b.*)
. = ALIGN(8);
}
__bss_stop = .;
_end = .;
DWARF_DEBUG
/DISCARD/ :
{
EXIT_TEXT
EXIT_DATA
EXIT_CALL
*(.discard)
*(.discard.*)
*(.interp)
}
}