Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Helper macros to support writing architecture specific |
| 3 | * linker scripts. |
| 4 | * |
| 5 | * A minimal linker scripts has following content: |
| 6 | * [This is a sample, architectures may have special requiriements] |
| 7 | * |
| 8 | * OUTPUT_FORMAT(...) |
| 9 | * OUTPUT_ARCH(...) |
| 10 | * ENTRY(...) |
| 11 | * SECTIONS |
| 12 | * { |
| 13 | * . = START; |
| 14 | * __init_begin = .; |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 15 | * HEAD_TEXT_SECTION |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 16 | * INIT_TEXT_SECTION(PAGE_SIZE) |
| 17 | * INIT_DATA_SECTION(...) |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 18 | * PERCPU_SECTION(CACHELINE_SIZE) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 19 | * __init_end = .; |
| 20 | * |
| 21 | * _stext = .; |
| 22 | * TEXT_SECTION = 0 |
| 23 | * _etext = .; |
| 24 | * |
| 25 | * _sdata = .; |
| 26 | * RO_DATA_SECTION(PAGE_SIZE) |
| 27 | * RW_DATA_SECTION(...) |
| 28 | * _edata = .; |
| 29 | * |
| 30 | * EXCEPTION_TABLE(...) |
| 31 | * NOTES |
| 32 | * |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 33 | * BSS_SECTION(0, 0, 0) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 34 | * _end = .; |
| 35 | * |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 36 | * STABS_DEBUG |
| 37 | * DWARF_DEBUG |
Tejun Heo | 023bf6f | 2009-07-09 11:27:40 +0900 | [diff] [blame] | 38 | * |
| 39 | * DISCARDS // must be the last |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 40 | * } |
| 41 | * |
| 42 | * [__init_begin, __init_end] is the init section that may be freed after init |
| 43 | * [_stext, _etext] is the text section |
| 44 | * [_sdata, _edata] is the data section |
| 45 | * |
| 46 | * Some of the included output section have their own set of constants. |
| 47 | * Examples are: [__initramfs_start, __initramfs_end] for initramfs and |
| 48 | * [__nosave_begin, __nosave_end] for the nosave data |
| 49 | */ |
Tim Abbott | c80d471 | 2009-04-25 22:10:56 -0400 | [diff] [blame] | 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #ifndef LOAD_OFFSET |
| 52 | #define LOAD_OFFSET 0 |
| 53 | #endif |
| 54 | |
Rusty Russell | b92021b | 2013-03-15 15:04:17 +1030 | [diff] [blame] | 55 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 57 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
| 58 | #define ALIGN_FUNCTION() . = ALIGN(8) |
| 59 | |
Sam Ravnborg | 07fca0e | 2010-07-10 08:35:00 +0200 | [diff] [blame] | 60 | /* |
| 61 | * Align to a 32 byte boundary equal to the |
| 62 | * alignment gcc 4.5 uses for a struct |
| 63 | */ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 64 | #define STRUCT_ALIGNMENT 32 |
| 65 | #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) |
Sam Ravnborg | 07fca0e | 2010-07-10 08:35:00 +0200 | [diff] [blame] | 66 | |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 67 | /* The actual configuration determine if the init/exit sections |
| 68 | * are handled as text/data or they can be discarded (which |
| 69 | * often happens at runtime) |
| 70 | */ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 71 | #ifdef CONFIG_HOTPLUG_CPU |
| 72 | #define CPU_KEEP(sec) *(.cpu##sec) |
| 73 | #define CPU_DISCARD(sec) |
| 74 | #else |
| 75 | #define CPU_KEEP(sec) |
| 76 | #define CPU_DISCARD(sec) *(.cpu##sec) |
| 77 | #endif |
| 78 | |
Adrian Bunk | 1a3fb6d | 2008-01-24 22:20:18 +0100 | [diff] [blame] | 79 | #if defined(CONFIG_MEMORY_HOTPLUG) |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 80 | #define MEM_KEEP(sec) *(.mem##sec) |
| 81 | #define MEM_DISCARD(sec) |
| 82 | #else |
| 83 | #define MEM_KEEP(sec) |
| 84 | #define MEM_DISCARD(sec) *(.mem##sec) |
| 85 | #endif |
| 86 | |
Steven Rostedt | 8da3821 | 2008-08-14 15:45:07 -0400 | [diff] [blame] | 87 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
John Reiser | 4b3b4c5 | 2009-07-27 11:23:50 -0700 | [diff] [blame] | 88 | #define MCOUNT_REC() . = ALIGN(8); \ |
| 89 | VMLINUX_SYMBOL(__start_mcount_loc) = .; \ |
Steven Rostedt | 8da3821 | 2008-08-14 15:45:07 -0400 | [diff] [blame] | 90 | *(__mcount_loc) \ |
| 91 | VMLINUX_SYMBOL(__stop_mcount_loc) = .; |
| 92 | #else |
| 93 | #define MCOUNT_REC() |
| 94 | #endif |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 95 | |
Steven Rostedt | 2ed84ee | 2008-11-12 15:24:24 -0500 | [diff] [blame] | 96 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
Steven Rostedt | 45b7974 | 2008-11-21 00:40:40 -0500 | [diff] [blame] | 97 | #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ |
| 98 | *(_ftrace_annotated_branch) \ |
| 99 | VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; |
Steven Rostedt | 1f0d69a | 2008-11-12 00:14:39 -0500 | [diff] [blame] | 100 | #else |
| 101 | #define LIKELY_PROFILE() |
| 102 | #endif |
| 103 | |
Steven Rostedt | 2bcd521 | 2008-11-21 01:30:54 -0500 | [diff] [blame] | 104 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
| 105 | #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ |
| 106 | *(_ftrace_branch) \ |
| 107 | VMLINUX_SYMBOL(__stop_branch_profile) = .; |
| 108 | #else |
| 109 | #define BRANCH_PROFILE() |
| 110 | #endif |
| 111 | |
Tom Zanussi | 5f77a88 | 2009-04-08 03:14:01 -0500 | [diff] [blame] | 112 | #ifdef CONFIG_EVENT_TRACING |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 113 | #define FTRACE_EVENTS() . = ALIGN(8); \ |
| 114 | VMLINUX_SYMBOL(__start_ftrace_events) = .; \ |
Steven Rostedt | b77e38a | 2009-02-24 10:21:36 -0500 | [diff] [blame] | 115 | *(_ftrace_events) \ |
| 116 | VMLINUX_SYMBOL(__stop_ftrace_events) = .; |
| 117 | #else |
| 118 | #define FTRACE_EVENTS() |
| 119 | #endif |
| 120 | |
Lai Jiangshan | 1ba28e0 | 2009-03-06 17:21:48 +0100 | [diff] [blame] | 121 | #ifdef CONFIG_TRACING |
| 122 | #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ |
| 123 | *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \ |
| 124 | VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; |
Steven Rostedt (Red Hat) | 102c932 | 2013-07-12 17:07:27 -0400 | [diff] [blame] | 125 | #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \ |
| 126 | *(__tracepoint_str) /* Trace_printk fmt' pointer */ \ |
| 127 | VMLINUX_SYMBOL(__stop___tracepoint_str) = .; |
Lai Jiangshan | 1ba28e0 | 2009-03-06 17:21:48 +0100 | [diff] [blame] | 128 | #else |
| 129 | #define TRACE_PRINTKS() |
Steven Rostedt (Red Hat) | 102c932 | 2013-07-12 17:07:27 -0400 | [diff] [blame] | 130 | #define TRACEPOINT_STR() |
Lai Jiangshan | 1ba28e0 | 2009-03-06 17:21:48 +0100 | [diff] [blame] | 131 | #endif |
| 132 | |
Frederic Weisbecker | bed1ffc | 2009-03-13 15:42:11 +0100 | [diff] [blame] | 133 | #ifdef CONFIG_FTRACE_SYSCALLS |
Steven Rostedt | 3d56e33 | 2011-02-02 17:06:09 -0500 | [diff] [blame] | 134 | #define TRACE_SYSCALLS() . = ALIGN(8); \ |
| 135 | VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ |
Frederic Weisbecker | bed1ffc | 2009-03-13 15:42:11 +0100 | [diff] [blame] | 136 | *(__syscalls_metadata) \ |
| 137 | VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; |
| 138 | #else |
| 139 | #define TRACE_SYSCALLS() |
| 140 | #endif |
| 141 | |
Stephen Warren | ae278a9 | 2012-11-19 16:41:20 -0700 | [diff] [blame] | 142 | #ifdef CONFIG_CLKSRC_OF |
| 143 | #define CLKSRC_OF_TABLES() . = ALIGN(8); \ |
| 144 | VMLINUX_SYMBOL(__clksrc_of_table) = .; \ |
| 145 | *(__clksrc_of_table) \ |
| 146 | *(__clksrc_of_table_end) |
| 147 | #else |
| 148 | #define CLKSRC_OF_TABLES() |
| 149 | #endif |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 150 | |
Thomas Petazzoni | f6e916b | 2012-11-20 23:00:52 +0100 | [diff] [blame] | 151 | #ifdef CONFIG_IRQCHIP |
| 152 | #define IRQCHIP_OF_MATCH_TABLE() \ |
| 153 | . = ALIGN(8); \ |
| 154 | VMLINUX_SYMBOL(__irqchip_begin) = .; \ |
| 155 | *(__irqchip_of_table) \ |
| 156 | *(__irqchip_of_end) |
| 157 | #else |
| 158 | #define IRQCHIP_OF_MATCH_TABLE() |
| 159 | #endif |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 160 | |
Prashant Gaikwad | f2f6c25 | 2013-01-04 12:30:52 +0530 | [diff] [blame] | 161 | #ifdef CONFIG_COMMON_CLK |
| 162 | #define CLK_OF_TABLES() . = ALIGN(8); \ |
| 163 | VMLINUX_SYMBOL(__clk_of_table) = .; \ |
| 164 | *(__clk_of_table) \ |
| 165 | *(__clk_of_table_end) |
| 166 | #else |
| 167 | #define CLK_OF_TABLES() |
| 168 | #endif |
| 169 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 170 | #define KERNEL_DTB() \ |
| 171 | STRUCT_ALIGN(); \ |
| 172 | VMLINUX_SYMBOL(__dtb_start) = .; \ |
| 173 | *(.dtb.init.rodata) \ |
| 174 | VMLINUX_SYMBOL(__dtb_end) = .; |
| 175 | |
Sam Ravnborg | ca96725 | 2007-05-17 13:38:44 +0200 | [diff] [blame] | 176 | /* .data section */ |
| 177 | #define DATA_DATA \ |
Sam Ravnborg | 0e0d314 | 2007-05-17 20:14:48 +0200 | [diff] [blame] | 178 | *(.data) \ |
Sam Ravnborg | 312b148 | 2008-01-28 20:21:15 +0100 | [diff] [blame] | 179 | *(.ref.data) \ |
Mike Frysinger | d356c0b | 2010-10-26 14:22:29 -0700 | [diff] [blame] | 180 | *(.data..shared_aligned) /* percpu related */ \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 181 | MEM_KEEP(init.data) \ |
| 182 | MEM_KEEP(exit.data) \ |
Jan Beulich | 7ccaba5 | 2012-03-23 15:01:52 -0700 | [diff] [blame] | 183 | *(.data.unlikely) \ |
Mathieu Desnoyers | 6549864 | 2011-01-26 17:26:22 -0500 | [diff] [blame] | 184 | STRUCT_ALIGN(); \ |
Mathieu Desnoyers | 97e1c18 | 2008-07-18 12:16:16 -0400 | [diff] [blame] | 185 | *(__tracepoints) \ |
Jason Baron | e9d376f | 2009-02-05 11:51:38 -0500 | [diff] [blame] | 186 | /* implement dynamic printk debug */ \ |
Jason Baron | d430d3d | 2011-03-16 17:29:47 -0400 | [diff] [blame] | 187 | . = ALIGN(8); \ |
| 188 | VMLINUX_SYMBOL(__start___jump_table) = .; \ |
| 189 | *(__jump_table) \ |
| 190 | VMLINUX_SYMBOL(__stop___jump_table) = .; \ |
Jason Baron | e9d376f | 2009-02-05 11:51:38 -0500 | [diff] [blame] | 191 | . = ALIGN(8); \ |
| 192 | VMLINUX_SYMBOL(__start___verbose) = .; \ |
| 193 | *(__verbose) \ |
| 194 | VMLINUX_SYMBOL(__stop___verbose) = .; \ |
Steven Rostedt | 2bcd521 | 2008-11-21 01:30:54 -0500 | [diff] [blame] | 195 | LIKELY_PROFILE() \ |
Steven Rostedt | b77e38a | 2009-02-24 10:21:36 -0500 | [diff] [blame] | 196 | BRANCH_PROFILE() \ |
Steven Rostedt (Red Hat) | 102c932 | 2013-07-12 17:07:27 -0400 | [diff] [blame] | 197 | TRACE_PRINTKS() \ |
| 198 | TRACEPOINT_STR() |
Sam Ravnborg | ca96725 | 2007-05-17 13:38:44 +0200 | [diff] [blame] | 199 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 200 | /* |
| 201 | * Data section helpers |
| 202 | */ |
| 203 | #define NOSAVE_DATA \ |
| 204 | . = ALIGN(PAGE_SIZE); \ |
| 205 | VMLINUX_SYMBOL(__nosave_begin) = .; \ |
Denys Vlasenko | 07b3bb1 | 2010-02-20 01:03:52 +0100 | [diff] [blame] | 206 | *(.data..nosave) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 207 | . = ALIGN(PAGE_SIZE); \ |
| 208 | VMLINUX_SYMBOL(__nosave_end) = .; |
| 209 | |
| 210 | #define PAGE_ALIGNED_DATA(page_align) \ |
| 211 | . = ALIGN(page_align); \ |
Tim Abbott | 75b1348 | 2010-02-20 01:03:37 +0100 | [diff] [blame] | 212 | *(.data..page_aligned) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 213 | |
| 214 | #define READ_MOSTLY_DATA(align) \ |
| 215 | . = ALIGN(align); \ |
Shaohua Li | 8369744 | 2011-01-12 16:59:38 -0800 | [diff] [blame] | 216 | *(.data..read_mostly) \ |
| 217 | . = ALIGN(align); |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 218 | |
| 219 | #define CACHELINE_ALIGNED_DATA(align) \ |
| 220 | . = ALIGN(align); \ |
Tim Abbott | 4af57b7 | 2010-02-20 01:03:34 +0100 | [diff] [blame] | 221 | *(.data..cacheline_aligned) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 222 | |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 223 | #define INIT_TASK_DATA(align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 224 | . = ALIGN(align); \ |
Tim Abbott | 2af7687 | 2010-02-20 01:03:35 +0100 | [diff] [blame] | 225 | *(.data..init_task) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 226 | |
| 227 | /* |
| 228 | * Read only Data |
| 229 | */ |
| 230 | #define RO_DATA_SECTION(align) \ |
Sam Ravnborg | 4096b46 | 2007-05-29 21:29:00 +0200 | [diff] [blame] | 231 | . = ALIGN((align)); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
Vivek Goyal | 6569580 | 2006-12-07 02:14:03 +0100 | [diff] [blame] | 233 | VMLINUX_SYMBOL(__start_rodata) = .; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | *(.rodata) *(.rodata.*) \ |
| 235 | *(__vermagic) /* Kernel version magic */ \ |
Mathieu Desnoyers | 6549864 | 2011-01-26 17:26:22 -0500 | [diff] [blame] | 236 | . = ALIGN(8); \ |
| 237 | VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \ |
| 238 | *(__tracepoints_ptrs) /* Tracepoints: pointer array */\ |
| 239 | VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \ |
Mathieu Desnoyers | 97e1c18 | 2008-07-18 12:16:16 -0400 | [diff] [blame] | 240 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | } \ |
| 242 | \ |
| 243 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ |
| 244 | *(.rodata1) \ |
| 245 | } \ |
| 246 | \ |
Jan Beulich | 6360b1f | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 247 | BUG_TABLE \ |
| 248 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | /* PCI quirks */ \ |
| 250 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ |
| 251 | VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ |
| 252 | *(.pci_fixup_early) \ |
| 253 | VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ |
| 254 | VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ |
| 255 | *(.pci_fixup_header) \ |
| 256 | VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ |
| 257 | VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ |
| 258 | *(.pci_fixup_final) \ |
| 259 | VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ |
| 260 | VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ |
| 261 | *(.pci_fixup_enable) \ |
| 262 | VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 263 | VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ |
| 264 | *(.pci_fixup_resume) \ |
| 265 | VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 266 | VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ |
| 267 | *(.pci_fixup_resume_early) \ |
| 268 | VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ |
| 269 | VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ |
| 270 | *(.pci_fixup_suspend) \ |
| 271 | VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } \ |
| 273 | \ |
David Woodhouse | 5658c76 | 2008-05-23 13:52:42 +0100 | [diff] [blame] | 274 | /* Built-in firmware blobs */ \ |
| 275 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ |
| 276 | VMLINUX_SYMBOL(__start_builtin_fw) = .; \ |
| 277 | *(.builtin_fw) \ |
| 278 | VMLINUX_SYMBOL(__end_builtin_fw) = .; \ |
| 279 | } \ |
| 280 | \ |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 281 | TRACEDATA \ |
| 282 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | /* Kernel symbol table: Normal symbols */ \ |
| 284 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ |
| 285 | VMLINUX_SYMBOL(__start___ksymtab) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 286 | *(SORT(___ksymtab+*)) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | VMLINUX_SYMBOL(__stop___ksymtab) = .; \ |
| 288 | } \ |
| 289 | \ |
| 290 | /* Kernel symbol table: GPL-only symbols */ \ |
| 291 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ |
| 292 | VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 293 | *(SORT(___ksymtab_gpl+*)) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ |
| 295 | } \ |
| 296 | \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 297 | /* Kernel symbol table: Normal unused symbols */ \ |
| 298 | __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ |
| 299 | VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 300 | *(SORT(___ksymtab_unused+*)) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 301 | VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ |
| 302 | } \ |
| 303 | \ |
| 304 | /* Kernel symbol table: GPL-only unused symbols */ \ |
| 305 | __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ |
| 306 | VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 307 | *(SORT(___ksymtab_unused_gpl+*)) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 308 | VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ |
| 309 | } \ |
| 310 | \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 311 | /* Kernel symbol table: GPL-future-only symbols */ \ |
| 312 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ |
| 313 | VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 314 | *(SORT(___ksymtab_gpl_future+*)) \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 315 | VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ |
| 316 | } \ |
| 317 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | /* Kernel symbol table: Normal symbols */ \ |
| 319 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ |
| 320 | VMLINUX_SYMBOL(__start___kcrctab) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 321 | *(SORT(___kcrctab+*)) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | VMLINUX_SYMBOL(__stop___kcrctab) = .; \ |
| 323 | } \ |
| 324 | \ |
| 325 | /* Kernel symbol table: GPL-only symbols */ \ |
| 326 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ |
| 327 | VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 328 | *(SORT(___kcrctab_gpl+*)) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ |
| 330 | } \ |
| 331 | \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 332 | /* Kernel symbol table: Normal unused symbols */ \ |
| 333 | __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ |
| 334 | VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 335 | *(SORT(___kcrctab_unused+*)) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 336 | VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ |
| 337 | } \ |
| 338 | \ |
| 339 | /* Kernel symbol table: GPL-only unused symbols */ \ |
| 340 | __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ |
| 341 | VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 342 | *(SORT(___kcrctab_unused_gpl+*)) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 343 | VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ |
| 344 | } \ |
| 345 | \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 346 | /* Kernel symbol table: GPL-future-only symbols */ \ |
| 347 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ |
| 348 | VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ |
Alessio Igor Bogani | f02e8a6 | 2011-04-14 14:59:39 +0200 | [diff] [blame] | 349 | *(SORT(___kcrctab_gpl_future+*)) \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 350 | VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ |
| 351 | } \ |
| 352 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | /* Kernel symbol table: strings */ \ |
| 354 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ |
| 355 | *(__ksymtab_strings) \ |
| 356 | } \ |
| 357 | \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 358 | /* __*init sections */ \ |
| 359 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ |
Sam Ravnborg | 312b148 | 2008-01-28 20:21:15 +0100 | [diff] [blame] | 360 | *(.ref.rodata) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 361 | MEM_KEEP(init.rodata) \ |
| 362 | MEM_KEEP(exit.rodata) \ |
| 363 | } \ |
| 364 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | /* Built-in module parameters. */ \ |
| 366 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ |
| 367 | VMLINUX_SYMBOL(__start___param) = .; \ |
| 368 | *(__param) \ |
| 369 | VMLINUX_SYMBOL(__stop___param) = .; \ |
Dmitry Torokhov | e94965e | 2010-12-15 14:00:19 -0800 | [diff] [blame] | 370 | } \ |
| 371 | \ |
| 372 | /* Built-in module versions. */ \ |
| 373 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ |
| 374 | VMLINUX_SYMBOL(__start___modver) = .; \ |
| 375 | *(__modver) \ |
| 376 | VMLINUX_SYMBOL(__stop___modver) = .; \ |
Arjan van de Ven | edeed30 | 2008-01-30 13:34:08 +0100 | [diff] [blame] | 377 | . = ALIGN((align)); \ |
Vivek Goyal | 6569580 | 2006-12-07 02:14:03 +0100 | [diff] [blame] | 378 | VMLINUX_SYMBOL(__end_rodata) = .; \ |
Marcelo Tosatti | 7583ddf | 2006-09-27 01:51:02 -0700 | [diff] [blame] | 379 | } \ |
Sam Ravnborg | 4096b46 | 2007-05-29 21:29:00 +0200 | [diff] [blame] | 380 | . = ALIGN((align)); |
| 381 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 382 | /* RODATA & RO_DATA provided for backward compatibility. |
Sam Ravnborg | 4096b46 | 2007-05-29 21:29:00 +0200 | [diff] [blame] | 383 | * All archs are supposed to use RO_DATA() */ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 384 | #define RODATA RO_DATA_SECTION(4096) |
| 385 | #define RO_DATA(align) RO_DATA_SECTION(align) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
| 387 | #define SECURITY_INIT \ |
Eric W. Biederman | 60bad7f | 2005-06-25 14:57:46 -0700 | [diff] [blame] | 388 | .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ |
| 390 | *(.security_initcall.init) \ |
| 391 | VMLINUX_SYMBOL(__security_initcall_end) = .; \ |
| 392 | } |
| 393 | |
Sam Ravnborg | 7664709 | 2007-05-13 00:31:33 +0200 | [diff] [blame] | 394 | /* .text section. Map to function alignment to avoid address changes |
| 395 | * during second ld run in second ld pass when generating System.map */ |
| 396 | #define TEXT_TEXT \ |
| 397 | ALIGN_FUNCTION(); \ |
Jan Beulich | fb5e2b3 | 2008-06-18 12:36:01 +0100 | [diff] [blame] | 398 | *(.text.hot) \ |
Sam Ravnborg | 0e0d314 | 2007-05-17 20:14:48 +0200 | [diff] [blame] | 399 | *(.text) \ |
Sam Ravnborg | 312b148 | 2008-01-28 20:21:15 +0100 | [diff] [blame] | 400 | *(.ref.text) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 401 | MEM_KEEP(init.text) \ |
Jan Beulich | fb5e2b3 | 2008-06-18 12:36:01 +0100 | [diff] [blame] | 402 | MEM_KEEP(exit.text) \ |
| 403 | *(.text.unlikely) |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 404 | |
Sam Ravnborg | 7664709 | 2007-05-13 00:31:33 +0200 | [diff] [blame] | 405 | |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 406 | /* sched.text is aling to function alignment to secure we have same |
| 407 | * address even at second ld pass when generating System.map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | #define SCHED_TEXT \ |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 409 | ALIGN_FUNCTION(); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | VMLINUX_SYMBOL(__sched_text_start) = .; \ |
| 411 | *(.sched.text) \ |
| 412 | VMLINUX_SYMBOL(__sched_text_end) = .; |
| 413 | |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 414 | /* spinlock.text is aling to function alignment to secure we have same |
| 415 | * address even at second ld pass when generating System.map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | #define LOCK_TEXT \ |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 417 | ALIGN_FUNCTION(); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | VMLINUX_SYMBOL(__lock_text_start) = .; \ |
| 419 | *(.spinlock.text) \ |
| 420 | VMLINUX_SYMBOL(__lock_text_end) = .; |
Prasanna S Panchamukhi | d0aaff9 | 2005-09-06 15:19:26 -0700 | [diff] [blame] | 421 | |
| 422 | #define KPROBES_TEXT \ |
| 423 | ALIGN_FUNCTION(); \ |
| 424 | VMLINUX_SYMBOL(__kprobes_text_start) = .; \ |
| 425 | *(.kprobes.text) \ |
| 426 | VMLINUX_SYMBOL(__kprobes_text_end) = .; |
Paolo 'Blaisorblade' Giarrusso | a7d0c21 | 2005-09-10 19:44:54 +0200 | [diff] [blame] | 427 | |
Jiri Olsa | ea71454 | 2011-03-07 19:10:39 +0100 | [diff] [blame] | 428 | #define ENTRY_TEXT \ |
| 429 | ALIGN_FUNCTION(); \ |
| 430 | VMLINUX_SYMBOL(__entry_text_start) = .; \ |
| 431 | *(.entry.text) \ |
| 432 | VMLINUX_SYMBOL(__entry_text_end) = .; |
| 433 | |
Frederic Weisbecker | a0343e8 | 2008-12-09 23:53:16 +0100 | [diff] [blame] | 434 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
| 435 | #define IRQENTRY_TEXT \ |
| 436 | ALIGN_FUNCTION(); \ |
| 437 | VMLINUX_SYMBOL(__irqentry_text_start) = .; \ |
| 438 | *(.irqentry.text) \ |
| 439 | VMLINUX_SYMBOL(__irqentry_text_end) = .; |
| 440 | #else |
| 441 | #define IRQENTRY_TEXT |
| 442 | #endif |
| 443 | |
Sam Ravnborg | 37c514e | 2008-02-19 21:00:18 +0100 | [diff] [blame] | 444 | /* Section used for early init (in .S files) */ |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 445 | #define HEAD_TEXT *(.head.text) |
Sam Ravnborg | 37c514e | 2008-02-19 21:00:18 +0100 | [diff] [blame] | 446 | |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 447 | #define HEAD_TEXT_SECTION \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 448 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
| 449 | HEAD_TEXT \ |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Exception table |
| 454 | */ |
| 455 | #define EXCEPTION_TABLE(align) \ |
| 456 | . = ALIGN(align); \ |
| 457 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ |
| 458 | VMLINUX_SYMBOL(__start___ex_table) = .; \ |
| 459 | *(__ex_table) \ |
| 460 | VMLINUX_SYMBOL(__stop___ex_table) = .; \ |
| 461 | } |
| 462 | |
| 463 | /* |
| 464 | * Init task |
| 465 | */ |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 466 | #define INIT_TASK_DATA_SECTION(align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 467 | . = ALIGN(align); \ |
Sam Ravnborg | da5e37e | 2010-07-13 11:39:42 +0200 | [diff] [blame] | 468 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 469 | INIT_TASK_DATA(align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 470 | } |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 471 | |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 472 | #ifdef CONFIG_CONSTRUCTORS |
Heiko Carstens | 2a2325e | 2009-06-30 11:41:13 -0700 | [diff] [blame] | 473 | #define KERNEL_CTORS() . = ALIGN(8); \ |
| 474 | VMLINUX_SYMBOL(__ctors_start) = .; \ |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 475 | *(.ctors) \ |
Frantisek Hrbata | eb3057d | 2013-10-14 18:08:46 +1030 | [diff] [blame] | 476 | *(.init_array) \ |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 477 | VMLINUX_SYMBOL(__ctors_end) = .; |
| 478 | #else |
| 479 | #define KERNEL_CTORS() |
| 480 | #endif |
| 481 | |
Sam Ravnborg | 01ba2bd | 2008-01-20 14:15:03 +0100 | [diff] [blame] | 482 | /* init and exit section handling */ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 483 | #define INIT_DATA \ |
| 484 | *(.init.data) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 485 | MEM_DISCARD(init.data) \ |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 486 | KERNEL_CTORS() \ |
John Reiser | 4b3b4c5 | 2009-07-27 11:23:50 -0700 | [diff] [blame] | 487 | MCOUNT_REC() \ |
Steven Rostedt | 9fd4932 | 2012-04-24 22:32:06 -0400 | [diff] [blame] | 488 | *(.init.rodata) \ |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 489 | FTRACE_EVENTS() \ |
Steven Rostedt | 3d56e33 | 2011-02-02 17:06:09 -0500 | [diff] [blame] | 490 | TRACE_SYSCALLS() \ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 491 | MEM_DISCARD(init.rodata) \ |
Prashant Gaikwad | f2f6c25 | 2013-01-04 12:30:52 +0530 | [diff] [blame] | 492 | CLK_OF_TABLES() \ |
Stephen Warren | ae278a9 | 2012-11-19 16:41:20 -0700 | [diff] [blame] | 493 | CLKSRC_OF_TABLES() \ |
Thomas Petazzoni | f6e916b | 2012-11-20 23:00:52 +0100 | [diff] [blame] | 494 | KERNEL_DTB() \ |
| 495 | IRQCHIP_OF_MATCH_TABLE() |
Sam Ravnborg | 01ba2bd | 2008-01-20 14:15:03 +0100 | [diff] [blame] | 496 | |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 497 | #define INIT_TEXT \ |
| 498 | *(.init.text) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 499 | MEM_DISCARD(init.text) |
| 500 | |
| 501 | #define EXIT_DATA \ |
| 502 | *(.exit.data) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 503 | MEM_DISCARD(exit.data) \ |
| 504 | MEM_DISCARD(exit.rodata) |
| 505 | |
| 506 | #define EXIT_TEXT \ |
| 507 | *(.exit.text) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 508 | MEM_DISCARD(exit.text) |
Sam Ravnborg | 01ba2bd | 2008-01-20 14:15:03 +0100 | [diff] [blame] | 509 | |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 510 | #define EXIT_CALL \ |
| 511 | *(.exitcall.exit) |
| 512 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 513 | /* |
| 514 | * bss (Block Started by Symbol) - uninitialized data |
| 515 | * zeroed during startup |
| 516 | */ |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 517 | #define SBSS(sbss_align) \ |
| 518 | . = ALIGN(sbss_align); \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 519 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
| 520 | *(.sbss) \ |
| 521 | *(.scommon) \ |
| 522 | } |
| 523 | |
David Daney | c87728c | 2012-08-14 11:08:00 -0700 | [diff] [blame] | 524 | /* |
| 525 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra |
| 526 | * sections to the front of bss. |
| 527 | */ |
| 528 | #ifndef BSS_FIRST_SECTIONS |
| 529 | #define BSS_FIRST_SECTIONS |
| 530 | #endif |
| 531 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 532 | #define BSS(bss_align) \ |
| 533 | . = ALIGN(bss_align); \ |
| 534 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ |
David Daney | c87728c | 2012-08-14 11:08:00 -0700 | [diff] [blame] | 535 | BSS_FIRST_SECTIONS \ |
Tim Abbott | 7c74df0 | 2010-02-20 01:03:38 +0100 | [diff] [blame] | 536 | *(.bss..page_aligned) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 537 | *(.dynbss) \ |
| 538 | *(.bss) \ |
| 539 | *(COMMON) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | /* |
| 543 | * DWARF debug sections. |
| 544 | * Symbols in the DWARF debugging sections are relative to |
| 545 | * the beginning of the section so we begin them at 0. |
| 546 | */ |
Paolo 'Blaisorblade' Giarrusso | a7d0c21 | 2005-09-10 19:44:54 +0200 | [diff] [blame] | 547 | #define DWARF_DEBUG \ |
| 548 | /* DWARF 1 */ \ |
| 549 | .debug 0 : { *(.debug) } \ |
| 550 | .line 0 : { *(.line) } \ |
| 551 | /* GNU DWARF 1 extensions */ \ |
| 552 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ |
| 553 | .debug_sfnames 0 : { *(.debug_sfnames) } \ |
| 554 | /* DWARF 1.1 and DWARF 2 */ \ |
| 555 | .debug_aranges 0 : { *(.debug_aranges) } \ |
| 556 | .debug_pubnames 0 : { *(.debug_pubnames) } \ |
| 557 | /* DWARF 2 */ \ |
| 558 | .debug_info 0 : { *(.debug_info \ |
| 559 | .gnu.linkonce.wi.*) } \ |
| 560 | .debug_abbrev 0 : { *(.debug_abbrev) } \ |
| 561 | .debug_line 0 : { *(.debug_line) } \ |
| 562 | .debug_frame 0 : { *(.debug_frame) } \ |
| 563 | .debug_str 0 : { *(.debug_str) } \ |
| 564 | .debug_loc 0 : { *(.debug_loc) } \ |
| 565 | .debug_macinfo 0 : { *(.debug_macinfo) } \ |
| 566 | /* SGI/MIPS DWARF 2 extensions */ \ |
| 567 | .debug_weaknames 0 : { *(.debug_weaknames) } \ |
| 568 | .debug_funcnames 0 : { *(.debug_funcnames) } \ |
| 569 | .debug_typenames 0 : { *(.debug_typenames) } \ |
| 570 | .debug_varnames 0 : { *(.debug_varnames) } \ |
| 571 | |
| 572 | /* Stabs debugging sections. */ |
| 573 | #define STABS_DEBUG \ |
| 574 | .stab 0 : { *(.stab) } \ |
| 575 | .stabstr 0 : { *(.stabstr) } \ |
| 576 | .stab.excl 0 : { *(.stab.excl) } \ |
| 577 | .stab.exclstr 0 : { *(.stab.exclstr) } \ |
| 578 | .stab.index 0 : { *(.stab.index) } \ |
| 579 | .stab.indexstr 0 : { *(.stab.indexstr) } \ |
| 580 | .comment 0 : { *(.comment) } |
Jeremy Fitzhardinge | 9c9b8b3 | 2006-09-25 23:32:26 -0700 | [diff] [blame] | 581 | |
Jan Beulich | 6360b1f | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 582 | #ifdef CONFIG_GENERIC_BUG |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 583 | #define BUG_TABLE \ |
| 584 | . = ALIGN(8); \ |
| 585 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 586 | VMLINUX_SYMBOL(__start___bug_table) = .; \ |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 587 | *(__bug_table) \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 588 | VMLINUX_SYMBOL(__stop___bug_table) = .; \ |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 589 | } |
Jan Beulich | 6360b1f | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 590 | #else |
| 591 | #define BUG_TABLE |
| 592 | #endif |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 593 | |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 594 | #ifdef CONFIG_PM_TRACE |
| 595 | #define TRACEDATA \ |
| 596 | . = ALIGN(4); \ |
| 597 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 598 | VMLINUX_SYMBOL(__tracedata_start) = .; \ |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 599 | *(.tracedata) \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 600 | VMLINUX_SYMBOL(__tracedata_end) = .; \ |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 601 | } |
| 602 | #else |
| 603 | #define TRACEDATA |
| 604 | #endif |
| 605 | |
Jeremy Fitzhardinge | 9c9b8b3 | 2006-09-25 23:32:26 -0700 | [diff] [blame] | 606 | #define NOTES \ |
Roland McGrath | cbe8712 | 2007-07-19 01:48:36 -0700 | [diff] [blame] | 607 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
| 608 | VMLINUX_SYMBOL(__start_notes) = .; \ |
| 609 | *(.note.*) \ |
| 610 | VMLINUX_SYMBOL(__stop_notes) = .; \ |
| 611 | } |
Andrew Morton | 61ce1ef | 2006-10-27 11:41:44 -0700 | [diff] [blame] | 612 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 613 | #define INIT_SETUP(initsetup_align) \ |
| 614 | . = ALIGN(initsetup_align); \ |
| 615 | VMLINUX_SYMBOL(__setup_start) = .; \ |
| 616 | *(.init.setup) \ |
| 617 | VMLINUX_SYMBOL(__setup_end) = .; |
| 618 | |
Pawel Moll | 026cee0 | 2012-03-26 12:50:51 +1030 | [diff] [blame] | 619 | #define INIT_CALLS_LEVEL(level) \ |
| 620 | VMLINUX_SYMBOL(__initcall##level##_start) = .; \ |
| 621 | *(.initcall##level##.init) \ |
| 622 | *(.initcall##level##s.init) \ |
Andrew Morton | 61ce1ef | 2006-10-27 11:41:44 -0700 | [diff] [blame] | 623 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 624 | #define INIT_CALLS \ |
| 625 | VMLINUX_SYMBOL(__initcall_start) = .; \ |
Pawel Moll | 026cee0 | 2012-03-26 12:50:51 +1030 | [diff] [blame] | 626 | *(.initcallearly.init) \ |
| 627 | INIT_CALLS_LEVEL(0) \ |
| 628 | INIT_CALLS_LEVEL(1) \ |
| 629 | INIT_CALLS_LEVEL(2) \ |
| 630 | INIT_CALLS_LEVEL(3) \ |
| 631 | INIT_CALLS_LEVEL(4) \ |
| 632 | INIT_CALLS_LEVEL(5) \ |
| 633 | INIT_CALLS_LEVEL(rootfs) \ |
| 634 | INIT_CALLS_LEVEL(6) \ |
| 635 | INIT_CALLS_LEVEL(7) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 636 | VMLINUX_SYMBOL(__initcall_end) = .; |
| 637 | |
| 638 | #define CON_INITCALL \ |
| 639 | VMLINUX_SYMBOL(__con_initcall_start) = .; \ |
| 640 | *(.con_initcall.init) \ |
| 641 | VMLINUX_SYMBOL(__con_initcall_end) = .; |
| 642 | |
| 643 | #define SECURITY_INITCALL \ |
| 644 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ |
| 645 | *(.security_initcall.init) \ |
| 646 | VMLINUX_SYMBOL(__security_initcall_end) = .; |
| 647 | |
| 648 | #ifdef CONFIG_BLK_DEV_INITRD |
| 649 | #define INIT_RAM_FS \ |
Mike Frysinger | d882626 | 2010-10-26 14:22:30 -0700 | [diff] [blame] | 650 | . = ALIGN(4); \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 651 | VMLINUX_SYMBOL(__initramfs_start) = .; \ |
| 652 | *(.init.ramfs) \ |
Hendrik Brueckner | ffe8018 | 2010-09-17 15:24:11 -0700 | [diff] [blame] | 653 | . = ALIGN(8); \ |
| 654 | *(.init.ramfs.info) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 655 | #else |
David Howells | eadfe21 | 2009-06-22 15:32:31 +0100 | [diff] [blame] | 656 | #define INIT_RAM_FS |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 657 | #endif |
| 658 | |
Tejun Heo | 023bf6f | 2009-07-09 11:27:40 +0900 | [diff] [blame] | 659 | /* |
| 660 | * Default discarded sections. |
| 661 | * |
| 662 | * Some archs want to discard exit text/data at runtime rather than |
| 663 | * link time due to cross-section references such as alt instructions, |
| 664 | * bug table, eh_frame, etc. DISCARDS must be the last of output |
| 665 | * section definitions so that such archs put those in earlier section |
| 666 | * definitions. |
| 667 | */ |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 668 | #define DISCARDS \ |
| 669 | /DISCARD/ : { \ |
| 670 | EXIT_TEXT \ |
| 671 | EXIT_DATA \ |
Tejun Heo | 023bf6f | 2009-07-09 11:27:40 +0900 | [diff] [blame] | 672 | EXIT_CALL \ |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 673 | *(.discard) \ |
Jeremy Fitzhardinge | c7f52cd | 2010-07-22 22:58:01 -0700 | [diff] [blame] | 674 | *(.discard.*) \ |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 675 | } |
| 676 | |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 677 | /** |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 678 | * PERCPU_INPUT - the percpu input sections |
| 679 | * @cacheline: cacheline size |
| 680 | * |
| 681 | * The core percpu section names and core symbols which do not rely |
| 682 | * directly upon load addresses. |
| 683 | * |
| 684 | * @cacheline is used to align subsections to avoid false cacheline |
| 685 | * sharing between subsections for different purposes. |
| 686 | */ |
| 687 | #define PERCPU_INPUT(cacheline) \ |
| 688 | VMLINUX_SYMBOL(__per_cpu_start) = .; \ |
| 689 | *(.data..percpu..first) \ |
| 690 | . = ALIGN(PAGE_SIZE); \ |
| 691 | *(.data..percpu..page_aligned) \ |
| 692 | . = ALIGN(cacheline); \ |
| 693 | *(.data..percpu..readmostly) \ |
| 694 | . = ALIGN(cacheline); \ |
| 695 | *(.data..percpu) \ |
| 696 | *(.data..percpu..shared_aligned) \ |
| 697 | VMLINUX_SYMBOL(__per_cpu_end) = .; |
| 698 | |
| 699 | /** |
Tejun Heo | 6b7c38d | 2009-01-19 12:21:28 +0900 | [diff] [blame] | 700 | * PERCPU_VADDR - define output section for percpu area |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 701 | * @cacheline: cacheline size |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 702 | * @vaddr: explicit base address (optional) |
| 703 | * @phdr: destination PHDR (optional) |
| 704 | * |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 705 | * Macro which expands to output section for percpu area. |
| 706 | * |
| 707 | * @cacheline is used to align subsections to avoid false cacheline |
| 708 | * sharing between subsections for different purposes. |
| 709 | * |
| 710 | * If @vaddr is not blank, it specifies explicit base address and all |
| 711 | * percpu symbols will be offset from the given address. If blank, |
| 712 | * @vaddr always equals @laddr + LOAD_OFFSET. |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 713 | * |
| 714 | * @phdr defines the output PHDR to use if not blank. Be warned that |
| 715 | * output PHDR is sticky. If @phdr is specified, the next output |
| 716 | * section in the linker script will go there too. @phdr should have |
| 717 | * a leading colon. |
| 718 | * |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 719 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
| 720 | * If there is no need to put the percpu section at a predetermined |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 721 | * address, use PERCPU_SECTION. |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 722 | */ |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 723 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
Ingo Molnar | dba3d36 | 2009-01-29 17:10:12 +0100 | [diff] [blame] | 724 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
Denys Vlasenko | 3d9a854 | 2010-02-20 01:03:43 +0100 | [diff] [blame] | 725 | .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ |
Tejun Heo | 6b7c38d | 2009-01-19 12:21:28 +0900 | [diff] [blame] | 726 | - LOAD_OFFSET) { \ |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 727 | PERCPU_INPUT(cacheline) \ |
Tejun Heo | 6b7c38d | 2009-01-19 12:21:28 +0900 | [diff] [blame] | 728 | } phdr \ |
Denys Vlasenko | 3d9a854 | 2010-02-20 01:03:43 +0100 | [diff] [blame] | 729 | . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 730 | |
| 731 | /** |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 732 | * PERCPU_SECTION - define output section for percpu area, simple version |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 733 | * @cacheline: cacheline size |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 734 | * |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 735 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
| 736 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 737 | * __per_cpu_start will be identical. |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 738 | * |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 739 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 740 | * except that __per_cpu_load is defined as a relative symbol against |
| 741 | * .data..percpu which is required for relocatable x86_32 configuration. |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 742 | */ |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 743 | #define PERCPU_SECTION(cacheline) \ |
| 744 | . = ALIGN(PAGE_SIZE); \ |
Denys Vlasenko | 3d9a854 | 2010-02-20 01:03:43 +0100 | [diff] [blame] | 745 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 746 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 747 | PERCPU_INPUT(cacheline) \ |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 748 | } |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 749 | |
| 750 | |
| 751 | /* |
| 752 | * Definition of the high level *_SECTION macros |
| 753 | * They will fit only a subset of the architectures |
| 754 | */ |
| 755 | |
| 756 | |
| 757 | /* |
| 758 | * Writeable data. |
| 759 | * All sections are combined in a single .data section. |
| 760 | * The sections following CONSTRUCTORS are arranged so their |
| 761 | * typical alignment matches. |
| 762 | * A cacheline is typical/always less than a PAGE_SIZE so |
| 763 | * the sections that has this restriction (or similar) |
| 764 | * is located before the ones requiring PAGE_SIZE alignment. |
| 765 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 766 | * matches the requirement of PAGE_ALIGNED_DATA. |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 767 | * |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 768 | * use 0 as page_align if page_aligned data is not used */ |
Paul Mundt | 73f1d93 | 2009-06-24 01:04:36 +0900 | [diff] [blame] | 769 | #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 770 | . = ALIGN(PAGE_SIZE); \ |
| 771 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 772 | INIT_TASK_DATA(inittask) \ |
Tim Abbott | 1b20862 | 2009-09-24 10:36:16 -0400 | [diff] [blame] | 773 | NOSAVE_DATA \ |
| 774 | PAGE_ALIGNED_DATA(pagealigned) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 775 | CACHELINE_ALIGNED_DATA(cacheline) \ |
| 776 | READ_MOSTLY_DATA(cacheline) \ |
| 777 | DATA_DATA \ |
| 778 | CONSTRUCTORS \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | #define INIT_TEXT_SECTION(inittext_align) \ |
| 782 | . = ALIGN(inittext_align); \ |
| 783 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ |
| 784 | VMLINUX_SYMBOL(_sinittext) = .; \ |
| 785 | INIT_TEXT \ |
| 786 | VMLINUX_SYMBOL(_einittext) = .; \ |
| 787 | } |
| 788 | |
| 789 | #define INIT_DATA_SECTION(initsetup_align) \ |
| 790 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ |
| 791 | INIT_DATA \ |
| 792 | INIT_SETUP(initsetup_align) \ |
| 793 | INIT_CALLS \ |
| 794 | CON_INITCALL \ |
| 795 | SECURITY_INITCALL \ |
| 796 | INIT_RAM_FS \ |
| 797 | } |
| 798 | |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 799 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
| 800 | . = ALIGN(sbss_align); \ |
| 801 | VMLINUX_SYMBOL(__bss_start) = .; \ |
| 802 | SBSS(sbss_align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 803 | BSS(bss_align) \ |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 804 | . = ALIGN(stop_align); \ |
| 805 | VMLINUX_SYMBOL(__bss_stop) = .; |