LXR linux/arch/parisc/kernel/vmlinux.lds.S

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*    Kernel link layout for various "sections"
   3 *
   4 *    Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
   5 *    Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
   6 *    Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
   7 *    Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
   8 *    Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
   9 *    Copyright (C) 2003 James Bottomley <jejb with parisc-linux.org>
  10 *    Copyright (C) 2006-2013 Helge Deller <deller@gmx.de>
  11 */
  12
  13/*
  14 * Put page table entries (swapper_pg_dir) as the first thing in .bss. This
  15 * will ensure that it has .bss alignment (PAGE_SIZE).
  16 */
  17#define BSS_FIRST_SECTIONS      *(.data..vm0.pmd) \
  18                                *(.data..vm0.pgd) \
  19                                *(.data..vm0.pte)
  20
  21#define CC_USING_PATCHABLE_FUNCTION_ENTRY
  22#define RO_EXCEPTION_TABLE_ALIGN        8
  23
  24#include <asm-generic/vmlinux.lds.h>
  25
  26/* needed for the processor specific cache alignment size */    
  27#include <asm/cache.h>
  28#include <asm/page.h>
  29#include <asm/asm-offsets.h>
  30#include <asm/thread_info.h>
  31        
  32/* ld script to make hppa Linux kernel */
  33#ifndef CONFIG_64BIT
  34OUTPUT_FORMAT("elf32-hppa-linux")
  35OUTPUT_ARCH(hppa)
  36#else
  37OUTPUT_FORMAT("elf64-hppa-linux")
  38OUTPUT_ARCH(hppa:hppa2.0w)
  39#endif
  40
  41#define EXIT_TEXT_SECTIONS()    .exit.text : { EXIT_TEXT }
  42#if !defined(CONFIG_64BIT) || defined(CONFIG_MLONGCALLS)
  43#define MLONGCALL_KEEP(x)
  44#define MLONGCALL_DISCARD(x)    x
  45#else
  46#define MLONGCALL_KEEP(x)       x
  47#define MLONGCALL_DISCARD(x)
  48#endif
  49
  50ENTRY(parisc_kernel_start)
  51#ifndef CONFIG_64BIT
  52jiffies = jiffies_64 + 4;
  53#else
  54jiffies = jiffies_64;
  55#endif
  56SECTIONS
  57{
  58        . = KERNEL_BINARY_TEXT_START;
  59
  60        __init_begin = .;
  61        HEAD_TEXT_SECTION
  62        MLONGCALL_DISCARD(INIT_TEXT_SECTION(8))
  63
  64        . = ALIGN(PAGE_SIZE);
  65        INIT_DATA_SECTION(PAGE_SIZE)
  66        MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS())
  67        .exit.data :
  68        {
  69                EXIT_DATA
  70        }
  71        PERCPU_SECTION(8)
  72        . = ALIGN(4);
  73        .altinstructions : {
  74                __alt_instructions = .;
  75                *(.altinstructions)
  76                __alt_instructions_end = .;
  77        }
  78        . = ALIGN(HUGEPAGE_SIZE);
  79        __init_end = .;
  80        /* freed after init ends here */
  81
  82        _text = .;              /* Text and read-only data */
  83        _stext = .;
  84        MLONGCALL_KEEP(INIT_TEXT_SECTION(8))
  85        .text ALIGN(PAGE_SIZE) : {
  86                TEXT_TEXT
  87                LOCK_TEXT
  88                SCHED_TEXT
  89                CPUIDLE_TEXT
  90                KPROBES_TEXT
  91                IRQENTRY_TEXT
  92                SOFTIRQENTRY_TEXT
  93                *(.text.do_softirq)
  94                *(.text.sys_exit)
  95                *(.text.do_sigaltstack)
  96                *(.text.do_fork)
  97                *(.text.div)
  98                *($$*)                  /* millicode routines */
  99                *(.text.*)
 100                *(.fixup)
 101                *(.lock.text)           /* out-of-line lock text */
 102                *(.gnu.warning)
 103        }
 104        MLONGCALL_KEEP(EXIT_TEXT_SECTIONS())
 105        . = ALIGN(PAGE_SIZE);
 106        _etext = .;
 107        /* End of text section */
 108
 109        /* Start of data section */
 110        _sdata = .;
 111
 112        /* Architecturally we need to keep __gp below 0x1000000 and thus
 113         * in front of RO_DATA() which stores lots of tracepoint
 114         * and ftrace symbols. */
 115#ifdef CONFIG_64BIT
 116        . = ALIGN(16);
 117        /* Linkage tables */
 118        .opd : {
 119                __start_opd = .;
 120                *(.opd)
 121                __end_opd = .;
 122        } PROVIDE (__gp = .);
 123        .plt : {
 124                *(.plt)
 125        }
 126        .dlt : {
 127                *(.dlt)
 128        }
 129#endif
 130
 131        RO_DATA(8)
 132
 133        /* unwind info */
 134        .PARISC.unwind : {
 135                __start___unwind = .;
 136                *(.PARISC.unwind)
 137                __stop___unwind = .;
 138        }
 139
 140        /* writeable */
 141        /* Make sure this is page aligned so
 142         * that we can properly leave these
 143         * as writable
 144         */
 145        . = ALIGN(HUGEPAGE_SIZE);
 146        data_start = .;
 147
 148        /* Data */
 149        RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
 150
 151        /* PA-RISC locks requires 16-byte alignment */
 152        . = ALIGN(16);
 153        .data..lock_aligned : {
 154                *(.data..lock_aligned)
 155        }
 156
 157        /* End of data section */
 158        _edata = .;
 159
 160        /* BSS */
 161        BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
 162
 163        . = ALIGN(HUGEPAGE_SIZE);
 164        _end = . ;
 165
 166        STABS_DEBUG
 167        ELF_DETAILS
 168        .note 0 : { *(.note) }
 169
 170        /* Sections to be discarded */
 171        DISCARDS
 172        /DISCARD/ : {
 173#ifdef CONFIG_64BIT
 174                /* temporary hack until binutils is fixed to not emit these
 175                 * for static binaries
 176                 */
 177                *(.interp)
 178                *(.dynsym)
 179                *(.dynstr)
 180                *(.dynamic)
 181                *(.hash)
 182                *(.gnu.hash)
 183#endif
 184        }
 185}
 186