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
  34 OUTPUT_FORMAT("elf32-hppa-linux")
  35 OUTPUT_ARCH(hppa)
  36 #else
  37 OUTPUT_FORMAT("elf64-hppa-linux")
  38 OUTPUT_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
  50 ENTRY(parisc_kernel_start)
  51 #ifndef CONFIG_64BIT
  52 jiffies = jiffies_64 + 4;
  53 #else
  54 jiffies = jiffies_64;
  55 #endif
  56 SECTIONS
  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 }