mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 14:41:39 +00:00
0d848afe11
There are no .bootstrap or .ResetVector.text sections linked to the vmlinux image, drop these sections from vmlinux.ld.S. Drop RESET_VECTOR_VADDR definition only used for .ResetVector.text. Drop remapped copies of primary and secondary reset vectors, as modern gdb don't have problems stepping through instructions at arbitrary locations. Drop corresponding sections from the corresponding linker scripts. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
338 lines
8.7 KiB
ArmAsm
338 lines
8.7 KiB
ArmAsm
/*
|
|
* arch/xtensa/kernel/vmlinux.lds.S
|
|
*
|
|
* Xtensa linker script
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2001 - 2008 Tensilica Inc.
|
|
*
|
|
* Chris Zankel <chris@zankel.net>
|
|
* Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
|
|
* Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
|
|
*/
|
|
|
|
#include <asm-generic/vmlinux.lds.h>
|
|
#include <asm/page.h>
|
|
#include <asm/thread_info.h>
|
|
|
|
#include <asm/vectors.h>
|
|
#include <variant/core.h>
|
|
#include <platform/hardware.h>
|
|
OUTPUT_ARCH(xtensa)
|
|
ENTRY(_start)
|
|
|
|
#ifdef __XTENSA_EB__
|
|
jiffies = jiffies_64 + 4;
|
|
#else
|
|
jiffies = jiffies_64;
|
|
#endif
|
|
|
|
#ifndef KERNELOFFSET
|
|
#define KERNELOFFSET 0xd0003000
|
|
#endif
|
|
|
|
/* Note: In the following macros, it would be nice to specify only the
|
|
vector name and section kind and construct "sym" and "section" using
|
|
CPP concatenation, but that does not work reliably. Concatenating a
|
|
string with "." produces an invalid token. CPP will not print a
|
|
warning because it thinks this is an assembly file, but it leaves
|
|
them as multiple tokens and there may or may not be whitespace
|
|
between them. */
|
|
|
|
/* Macro for a relocation entry */
|
|
|
|
#define RELOCATE_ENTRY(sym, section) \
|
|
LONG(sym ## _start); \
|
|
LONG(sym ## _end); \
|
|
LONG(LOADADDR(section))
|
|
|
|
/* Macro to define a section for a vector.
|
|
*
|
|
* Use of the MIN function catches the types of errors illustrated in
|
|
* the following example:
|
|
*
|
|
* Assume the section .DoubleExceptionVector.literal is completely
|
|
* full. Then a programmer adds code to .DoubleExceptionVector.text
|
|
* that produces another literal. The final literal position will
|
|
* overlay onto the first word of the adjacent code section
|
|
* .DoubleExceptionVector.text. (In practice, the literals will
|
|
* overwrite the code, and the first few instructions will be
|
|
* garbage.)
|
|
*/
|
|
|
|
#define SECTION_VECTOR(sym, section, addr, max_prevsec_size, prevsec) \
|
|
section addr : AT((MIN(LOADADDR(prevsec) + max_prevsec_size, \
|
|
LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
|
|
{ \
|
|
. = ALIGN(4); \
|
|
sym ## _start = ABSOLUTE(.); \
|
|
*(section) \
|
|
sym ## _end = ABSOLUTE(.); \
|
|
}
|
|
|
|
/*
|
|
* Mapping of input sections to output sections when linking.
|
|
*/
|
|
|
|
SECTIONS
|
|
{
|
|
. = KERNELOFFSET;
|
|
/* .text section */
|
|
|
|
_text = .;
|
|
_stext = .;
|
|
|
|
.text :
|
|
{
|
|
/* The HEAD_TEXT section must be the first section! */
|
|
HEAD_TEXT
|
|
TEXT_TEXT
|
|
VMLINUX_SYMBOL(__sched_text_start) = .;
|
|
*(.sched.literal .sched.text)
|
|
VMLINUX_SYMBOL(__sched_text_end) = .;
|
|
VMLINUX_SYMBOL(__lock_text_start) = .;
|
|
*(.spinlock.literal .spinlock.text)
|
|
VMLINUX_SYMBOL(__lock_text_end) = .;
|
|
|
|
}
|
|
_etext = .;
|
|
PROVIDE (etext = .);
|
|
|
|
. = ALIGN(16);
|
|
|
|
RODATA
|
|
|
|
/* Relocation table */
|
|
|
|
.fixup : { *(.fixup) }
|
|
|
|
EXCEPTION_TABLE(16)
|
|
/* Data section */
|
|
|
|
_sdata = .;
|
|
RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE)
|
|
_edata = .;
|
|
|
|
/* Initialization code and data: */
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
__init_begin = .;
|
|
INIT_TEXT_SECTION(PAGE_SIZE)
|
|
|
|
.init.data :
|
|
{
|
|
INIT_DATA
|
|
. = ALIGN(0x4);
|
|
__tagtable_begin = .;
|
|
*(.taglist)
|
|
__tagtable_end = .;
|
|
|
|
. = ALIGN(16);
|
|
__boot_reloc_table_start = ABSOLUTE(.);
|
|
|
|
RELOCATE_ENTRY(_WindowVectors_text,
|
|
.WindowVectors.text);
|
|
#if XCHAL_EXCM_LEVEL >= 2
|
|
RELOCATE_ENTRY(_Level2InterruptVector_text,
|
|
.Level2InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 3
|
|
RELOCATE_ENTRY(_Level3InterruptVector_text,
|
|
.Level3InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 4
|
|
RELOCATE_ENTRY(_Level4InterruptVector_text,
|
|
.Level4InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 5
|
|
RELOCATE_ENTRY(_Level5InterruptVector_text,
|
|
.Level5InterruptVector.text);
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 6
|
|
RELOCATE_ENTRY(_Level6InterruptVector_text,
|
|
.Level6InterruptVector.text);
|
|
#endif
|
|
RELOCATE_ENTRY(_KernelExceptionVector_text,
|
|
.KernelExceptionVector.text);
|
|
RELOCATE_ENTRY(_UserExceptionVector_text,
|
|
.UserExceptionVector.text);
|
|
RELOCATE_ENTRY(_DoubleExceptionVector_literal,
|
|
.DoubleExceptionVector.literal);
|
|
RELOCATE_ENTRY(_DoubleExceptionVector_text,
|
|
.DoubleExceptionVector.text);
|
|
RELOCATE_ENTRY(_DebugInterruptVector_text,
|
|
.DebugInterruptVector.text);
|
|
#if defined(CONFIG_SMP)
|
|
RELOCATE_ENTRY(_SecondaryResetVector_text,
|
|
.SecondaryResetVector.text);
|
|
#endif
|
|
|
|
|
|
__boot_reloc_table_end = ABSOLUTE(.) ;
|
|
|
|
INIT_SETUP(XCHAL_ICACHE_LINESIZE)
|
|
INIT_CALLS
|
|
CON_INITCALL
|
|
SECURITY_INITCALL
|
|
INIT_RAM_FS
|
|
}
|
|
|
|
PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
|
|
|
|
/* We need this dummy segment here */
|
|
|
|
. = ALIGN(4);
|
|
.dummy : { LONG(0) }
|
|
|
|
/* The vectors are relocated to the real position at startup time */
|
|
|
|
SECTION_VECTOR (_WindowVectors_text,
|
|
.WindowVectors.text,
|
|
WINDOW_VECTORS_VADDR, 4,
|
|
.dummy)
|
|
SECTION_VECTOR (_DebugInterruptVector_literal,
|
|
.DebugInterruptVector.literal,
|
|
DEBUG_VECTOR_VADDR - 4,
|
|
SIZEOF(.WindowVectors.text),
|
|
.WindowVectors.text)
|
|
SECTION_VECTOR (_DebugInterruptVector_text,
|
|
.DebugInterruptVector.text,
|
|
DEBUG_VECTOR_VADDR,
|
|
4,
|
|
.DebugInterruptVector.literal)
|
|
#undef LAST
|
|
#define LAST .DebugInterruptVector.text
|
|
#if XCHAL_EXCM_LEVEL >= 2
|
|
SECTION_VECTOR (_Level2InterruptVector_text,
|
|
.Level2InterruptVector.text,
|
|
INTLEVEL2_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level2InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 3
|
|
SECTION_VECTOR (_Level3InterruptVector_text,
|
|
.Level3InterruptVector.text,
|
|
INTLEVEL3_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level3InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 4
|
|
SECTION_VECTOR (_Level4InterruptVector_text,
|
|
.Level4InterruptVector.text,
|
|
INTLEVEL4_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level4InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 5
|
|
SECTION_VECTOR (_Level5InterruptVector_text,
|
|
.Level5InterruptVector.text,
|
|
INTLEVEL5_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level5InterruptVector.text
|
|
#endif
|
|
#if XCHAL_EXCM_LEVEL >= 6
|
|
SECTION_VECTOR (_Level6InterruptVector_text,
|
|
.Level6InterruptVector.text,
|
|
INTLEVEL6_VECTOR_VADDR,
|
|
SIZEOF(LAST), LAST)
|
|
# undef LAST
|
|
# define LAST .Level6InterruptVector.text
|
|
#endif
|
|
SECTION_VECTOR (_KernelExceptionVector_literal,
|
|
.KernelExceptionVector.literal,
|
|
KERNEL_VECTOR_VADDR - 4,
|
|
SIZEOF(LAST), LAST)
|
|
#undef LAST
|
|
SECTION_VECTOR (_KernelExceptionVector_text,
|
|
.KernelExceptionVector.text,
|
|
KERNEL_VECTOR_VADDR,
|
|
4,
|
|
.KernelExceptionVector.literal)
|
|
SECTION_VECTOR (_UserExceptionVector_literal,
|
|
.UserExceptionVector.literal,
|
|
USER_VECTOR_VADDR - 4,
|
|
SIZEOF(.KernelExceptionVector.text),
|
|
.KernelExceptionVector.text)
|
|
SECTION_VECTOR (_UserExceptionVector_text,
|
|
.UserExceptionVector.text,
|
|
USER_VECTOR_VADDR,
|
|
4,
|
|
.UserExceptionVector.literal)
|
|
SECTION_VECTOR (_DoubleExceptionVector_literal,
|
|
.DoubleExceptionVector.literal,
|
|
DOUBLEEXC_VECTOR_VADDR - 48,
|
|
SIZEOF(.UserExceptionVector.text),
|
|
.UserExceptionVector.text)
|
|
SECTION_VECTOR (_DoubleExceptionVector_text,
|
|
.DoubleExceptionVector.text,
|
|
DOUBLEEXC_VECTOR_VADDR,
|
|
48,
|
|
.DoubleExceptionVector.literal)
|
|
|
|
. = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
|
|
|
|
#if defined(CONFIG_SMP)
|
|
|
|
SECTION_VECTOR (_SecondaryResetVector_text,
|
|
.SecondaryResetVector.text,
|
|
RESET_VECTOR1_VADDR,
|
|
SIZEOF(.DoubleExceptionVector.text),
|
|
.DoubleExceptionVector.text)
|
|
|
|
. = LOADADDR(.SecondaryResetVector.text)+SIZEOF(.SecondaryResetVector.text);
|
|
|
|
#endif
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
|
|
__init_end = .;
|
|
|
|
BSS_SECTION(0, 8192, 0)
|
|
|
|
_end = .;
|
|
|
|
.xt.lit : { *(.xt.lit) }
|
|
.xt.prop : { *(.xt.prop) }
|
|
|
|
.debug 0 : { *(.debug) }
|
|
.line 0 : { *(.line) }
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
|
.debug_aranges 0 : { *(.debug_aranges) }
|
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
|
.debug_info 0 : { *(.debug_info) }
|
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
|
.debug_line 0 : { *(.debug_line) }
|
|
.debug_frame 0 : { *(.debug_frame) }
|
|
.debug_str 0 : { *(.debug_str) }
|
|
.debug_loc 0 : { *(.debug_loc) }
|
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
|
.debug_typenames 0 : { *(.debug_typenames) }
|
|
.debug_varnames 0 : { *(.debug_varnames) }
|
|
|
|
.xt.insn 0 :
|
|
{
|
|
*(.xt.insn)
|
|
*(.gnu.linkonce.x*)
|
|
}
|
|
|
|
.xt.lit 0 :
|
|
{
|
|
*(.xt.lit)
|
|
*(.gnu.linkonce.p*)
|
|
}
|
|
|
|
/* Sections to be discarded */
|
|
DISCARDS
|
|
/DISCARD/ : { *(.exit.literal) }
|
|
}
|