| 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 | KPROBES_TEXT |
| 90 | IRQENTRY_TEXT |
| 91 | SOFTIRQENTRY_TEXT |
| 92 | *(.text.do_softirq) |
| 93 | *(.text.sys_exit) |
| 94 | *(.text.do_sigaltstack) |
| 95 | *(.text.do_fork) |
| 96 | *(.text.div) |
| 97 | *($$*) /* millicode routines */ |
| 98 | *(.text.*) |
| 99 | *(.fixup) |
| 100 | *(.lock.text) /* out-of-line lock text */ |
| 101 | *(.gnu.warning) |
| 102 | } |
| 103 | MLONGCALL_KEEP(EXIT_TEXT_SECTIONS()) |
| 104 | . = ALIGN(PAGE_SIZE); |
| 105 | _etext = .; |
| 106 | /* End of text section */ |
| 107 | |
| 108 | /* Start of data section */ |
| 109 | _sdata = .; |
| 110 | |
| 111 | /* Architecturally we need to keep __gp below 0x1000000 and thus |
| 112 | * in front of RO_DATA() which stores lots of tracepoint |
| 113 | * and ftrace symbols. */ |
| 114 | #ifdef CONFIG_64BIT |
| 115 | . = ALIGN(16); |
| 116 | /* Linkage tables */ |
| 117 | .opd : { |
| 118 | __start_opd = .; |
| 119 | *(.opd) |
| 120 | __end_opd = .; |
| 121 | } PROVIDE (__gp = .); |
| 122 | .plt : { |
| 123 | *(.plt) |
| 124 | } |
| 125 | .dlt : { |
| 126 | *(.dlt) |
| 127 | } |
| 128 | #endif |
| 129 | |
| 130 | RO_DATA(PAGE_SIZE) |
| 131 | |
| 132 | /* unwind info */ |
| 133 | . = ALIGN(4); |
| 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 | . = ALIGN(PAGE_SIZE); |
| 159 | _edata = .; |
| 160 | |
| 161 | /* BSS */ |
| 162 | BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE) |
| 163 | |
| 164 | . = ALIGN(HUGEPAGE_SIZE); |
| 165 | _end = . ; |
| 166 | |
| 167 | STABS_DEBUG |
| 168 | ELF_DETAILS |
| 169 | .note 0 : { *(.note) } |
| 170 | |
| 171 | /* Sections to be discarded */ |
| 172 | DISCARDS |
| 173 | /DISCARD/ : { |
| 174 | #ifdef CONFIG_64BIT |
| 175 | /* temporary hack until binutils is fixed to not emit these |
| 176 | * for static binaries |
| 177 | */ |
| 178 | *(.interp) |
| 179 | *(.dynsym) |
| 180 | *(.dynstr) |
| 181 | *(.dynamic) |
| 182 | *(.hash) |
| 183 | *(.gnu.hash) |
| 184 | #endif |
| 185 | } |
| 186 | } |