linux/arch/loongarch/kernel/vmlinux.lds.S
Linus Torvalds a8356cdb5b LoongArch changes for v6.3
1, Make -mstrict-align configurable;
 2, Add kernel relocation and KASLR support;
 3, Add single kernel image implementation for kdump;
 4, Add hardware breakpoints/watchpoints support;
 5, Add kprobes/kretprobes/kprobes_on_ftrace support;
 6, Add LoongArch support for some selftests.
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Merge tag 'loongarch-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Make -mstrict-align configurable

 - Add kernel relocation and KASLR support

 - Add single kernel image implementation for kdump

 - Add hardware breakpoints/watchpoints support

 - Add kprobes/kretprobes/kprobes_on_ftrace support

 - Add LoongArch support for some selftests.

* tag 'loongarch-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (23 commits)
  selftests/ftrace: Add LoongArch kprobe args string tests support
  selftests/seccomp: Add LoongArch selftesting support
  tools: Add LoongArch build infrastructure
  samples/kprobes: Add LoongArch support
  LoongArch: Mark some assembler symbols as non-kprobe-able
  LoongArch: Add kprobes on ftrace support
  LoongArch: Add kretprobes support
  LoongArch: Add kprobes support
  LoongArch: Simulate branch and PC* instructions
  LoongArch: ptrace: Add hardware single step support
  LoongArch: ptrace: Add function argument access API
  LoongArch: ptrace: Expose hardware breakpoints to debuggers
  LoongArch: Add hardware breakpoints/watchpoints support
  LoongArch: kdump: Add crashkernel=YM handling
  LoongArch: kdump: Add single kernel image implementation
  LoongArch: Add support for kernel address space layout randomization (KASLR)
  LoongArch: Add support for kernel relocation
  LoongArch: Add la_abs macro implementation
  LoongArch: Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs
  LoongArch: Use la.pcrel instead of la.abs when it's trivially possible
  ...
2023-03-01 09:27:00 -08:00

156 lines
2.7 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/sizes.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#define PAGE_SIZE _PAGE_SIZE
#define RO_EXCEPTION_TABLE_ALIGN 4
/*
* Put .bss..swapper_pg_dir as the first thing in .bss. This will
* ensure that it has .bss alignment (64K).
*/
#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
#include <asm-generic/vmlinux.lds.h>
#include "image-vars.h"
/*
* Max avaliable Page Size is 64K, so we set SectionAlignment
* field of EFI application to 64K.
*/
PECOFF_FILE_ALIGN = 0x200;
PECOFF_SEGMENT_ALIGN = 0x10000;
OUTPUT_ARCH(loongarch)
ENTRY(kernel_entry)
PHDRS {
text PT_LOAD FLAGS(7); /* RWX */
note PT_NOTE FLAGS(4); /* R__ */
}
jiffies = jiffies_64;
SECTIONS
{
. = VMLINUX_LOAD_ADDRESS;
_text = .;
HEAD_TEXT_SECTION
. = ALIGN(PECOFF_SEGMENT_ALIGN);
_stext = .;
.text : {
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
*(.fixup)
*(.gnu.warning)
} :text = 0
. = ALIGN(PECOFF_SEGMENT_ALIGN);
_etext = .;
/*
* struct alt_inst entries. From the header (alternative.h):
* "Alternative instructions for different CPU types or capabilities"
* Think locking instructions on spinlocks.
*/
. = ALIGN(4);
.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
__alt_instructions = .;
*(.altinstructions)
__alt_instructions_end = .;
}
#ifdef CONFIG_RELOCATABLE
. = ALIGN(8);
.la_abs : AT(ADDR(.la_abs) - LOAD_OFFSET) {
__la_abs_begin = .;
*(.la_abs)
__la_abs_end = .;
}
#endif
.got : ALIGN(16) { *(.got) }
.plt : ALIGN(16) { *(.plt) }
.got.plt : ALIGN(16) { *(.got.plt) }
.data.rel : { *(.data.rel*) }
. = ALIGN(PECOFF_SEGMENT_ALIGN);
__init_begin = .;
__inittext_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE)
.exit.text : {
EXIT_TEXT
}
. = ALIGN(PECOFF_SEGMENT_ALIGN);
__inittext_end = .;
__initdata_begin = .;
INIT_DATA_SECTION(16)
.exit.data : {
EXIT_DATA
}
#ifdef CONFIG_SMP
PERCPU_SECTION(1 << CONFIG_L1_CACHE_SHIFT)
#endif
.init.bss : {
*(.init.bss)
}
. = ALIGN(PECOFF_SEGMENT_ALIGN);
__initdata_end = .;
__init_end = .;
_sdata = .;
RO_DATA(4096)
RW_DATA(1 << CONFIG_L1_CACHE_SHIFT, PAGE_SIZE, THREAD_SIZE)
.rela.dyn : ALIGN(8) {
__rela_dyn_begin = .;
*(.rela.dyn) *(.rela*)
__rela_dyn_end = .;
}
.sdata : {
*(.sdata)
}
.edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGN); }
_edata = .;
BSS_SECTION(0, SZ_64K, 8)
. = ALIGN(PECOFF_SEGMENT_ALIGN);
_end = .;
STABS_DEBUG
DWARF_DEBUG
ELF_DETAILS
.gptab.sdata : {
*(.gptab.data)
*(.gptab.sdata)
}
.gptab.sbss : {
*(.gptab.bss)
*(.gptab.sbss)
}
DISCARDS
/DISCARD/ : {
*(.dynamic .dynsym .dynstr .hash .gnu.hash)
*(.gnu.attributes)
*(.options)
*(.eh_frame)
}
}