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 |
Yalin Wang | 562c85c | 2014-09-26 03:30:59 +0100 | [diff] [blame] | 43 | * // __init_begin and __init_end should be page aligned, so that we can |
| 44 | * // free the whole .init memory |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 45 | * [_stext, _etext] is the text section |
| 46 | * [_sdata, _edata] is the data section |
| 47 | * |
| 48 | * Some of the included output section have their own set of constants. |
| 49 | * Examples are: [__initramfs_start, __initramfs_end] for initramfs and |
| 50 | * [__nosave_begin, __nosave_end] for the nosave data |
| 51 | */ |
Tim Abbott | c80d471 | 2009-04-25 22:10:56 -0400 | [diff] [blame] | 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #ifndef LOAD_OFFSET |
| 54 | #define LOAD_OFFSET 0 |
| 55 | #endif |
| 56 | |
Rusty Russell | b92021b | 2013-03-15 15:04:17 +1030 | [diff] [blame] | 57 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 59 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
| 60 | #define ALIGN_FUNCTION() . = ALIGN(8) |
| 61 | |
Sam Ravnborg | 07fca0e | 2010-07-10 08:35:00 +0200 | [diff] [blame] | 62 | /* |
Nicholas Piggin | 1fdee09 | 2017-07-26 22:46:27 +1000 | [diff] [blame] | 63 | * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which |
| 64 | * generates .data.identifier sections, which need to be pulled in with |
| 65 | * .data. We don't want to pull in .data..other sections, which Linux |
| 66 | * has defined. Same for text and bss. |
| 67 | */ |
| 68 | #ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION |
| 69 | #define TEXT_MAIN .text .text.[0-9a-zA-Z_]* |
| 70 | #define DATA_MAIN .data .data.[0-9a-zA-Z_]* |
| 71 | #define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* |
| 72 | #else |
| 73 | #define TEXT_MAIN .text |
| 74 | #define DATA_MAIN .data |
| 75 | #define BSS_MAIN .bss |
| 76 | #endif |
| 77 | |
| 78 | /* |
Sam Ravnborg | 07fca0e | 2010-07-10 08:35:00 +0200 | [diff] [blame] | 79 | * Align to a 32 byte boundary equal to the |
| 80 | * alignment gcc 4.5 uses for a struct |
| 81 | */ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 82 | #define STRUCT_ALIGNMENT 32 |
| 83 | #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) |
Sam Ravnborg | 07fca0e | 2010-07-10 08:35:00 +0200 | [diff] [blame] | 84 | |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 85 | /* The actual configuration determine if the init/exit sections |
| 86 | * are handled as text/data or they can be discarded (which |
| 87 | * often happens at runtime) |
| 88 | */ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 89 | #ifdef CONFIG_HOTPLUG_CPU |
| 90 | #define CPU_KEEP(sec) *(.cpu##sec) |
| 91 | #define CPU_DISCARD(sec) |
| 92 | #else |
| 93 | #define CPU_KEEP(sec) |
| 94 | #define CPU_DISCARD(sec) *(.cpu##sec) |
| 95 | #endif |
| 96 | |
Adrian Bunk | 1a3fb6d | 2008-01-24 22:20:18 +0100 | [diff] [blame] | 97 | #if defined(CONFIG_MEMORY_HOTPLUG) |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 98 | #define MEM_KEEP(sec) *(.mem##sec) |
| 99 | #define MEM_DISCARD(sec) |
| 100 | #else |
| 101 | #define MEM_KEEP(sec) |
| 102 | #define MEM_DISCARD(sec) *(.mem##sec) |
| 103 | #endif |
| 104 | |
Steven Rostedt | 8da3821 | 2008-08-14 15:45:07 -0400 | [diff] [blame] | 105 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
John Reiser | 4b3b4c5 | 2009-07-27 11:23:50 -0700 | [diff] [blame] | 106 | #define MCOUNT_REC() . = ALIGN(8); \ |
| 107 | VMLINUX_SYMBOL(__start_mcount_loc) = .; \ |
Steven Rostedt | 8da3821 | 2008-08-14 15:45:07 -0400 | [diff] [blame] | 108 | *(__mcount_loc) \ |
| 109 | VMLINUX_SYMBOL(__stop_mcount_loc) = .; |
| 110 | #else |
| 111 | #define MCOUNT_REC() |
| 112 | #endif |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 113 | |
Steven Rostedt | 2ed84ee | 2008-11-12 15:24:24 -0500 | [diff] [blame] | 114 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
Steven Rostedt | 45b7974 | 2008-11-21 00:40:40 -0500 | [diff] [blame] | 115 | #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ |
| 116 | *(_ftrace_annotated_branch) \ |
| 117 | VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; |
Steven Rostedt | 1f0d69a | 2008-11-12 00:14:39 -0500 | [diff] [blame] | 118 | #else |
| 119 | #define LIKELY_PROFILE() |
| 120 | #endif |
| 121 | |
Steven Rostedt | 2bcd521 | 2008-11-21 01:30:54 -0500 | [diff] [blame] | 122 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
| 123 | #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ |
| 124 | *(_ftrace_branch) \ |
| 125 | VMLINUX_SYMBOL(__stop_branch_profile) = .; |
| 126 | #else |
| 127 | #define BRANCH_PROFILE() |
| 128 | #endif |
| 129 | |
Masami Hiramatsu | 376e242 | 2014-04-17 17:17:05 +0900 | [diff] [blame] | 130 | #ifdef CONFIG_KPROBES |
Vineet Gupta | 69902c7 | 2014-05-01 10:56:44 +0530 | [diff] [blame] | 131 | #define KPROBE_BLACKLIST() . = ALIGN(8); \ |
| 132 | VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \ |
Masami Hiramatsu | 376e242 | 2014-04-17 17:17:05 +0900 | [diff] [blame] | 133 | *(_kprobe_blacklist) \ |
| 134 | VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .; |
| 135 | #else |
| 136 | #define KPROBE_BLACKLIST() |
| 137 | #endif |
| 138 | |
Tom Zanussi | 5f77a88 | 2009-04-08 03:14:01 -0500 | [diff] [blame] | 139 | #ifdef CONFIG_EVENT_TRACING |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 140 | #define FTRACE_EVENTS() . = ALIGN(8); \ |
| 141 | VMLINUX_SYMBOL(__start_ftrace_events) = .; \ |
Steven Rostedt | b77e38a | 2009-02-24 10:21:36 -0500 | [diff] [blame] | 142 | *(_ftrace_events) \ |
Steven Rostedt (Red Hat) | 0c564a5 | 2015-03-24 17:58:09 -0400 | [diff] [blame] | 143 | VMLINUX_SYMBOL(__stop_ftrace_events) = .; \ |
| 144 | VMLINUX_SYMBOL(__start_ftrace_enum_maps) = .; \ |
| 145 | *(_ftrace_enum_map) \ |
| 146 | VMLINUX_SYMBOL(__stop_ftrace_enum_maps) = .; |
Steven Rostedt | b77e38a | 2009-02-24 10:21:36 -0500 | [diff] [blame] | 147 | #else |
| 148 | #define FTRACE_EVENTS() |
| 149 | #endif |
| 150 | |
Lai Jiangshan | 1ba28e0 | 2009-03-06 17:21:48 +0100 | [diff] [blame] | 151 | #ifdef CONFIG_TRACING |
| 152 | #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ |
| 153 | *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \ |
| 154 | VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; |
Steven Rostedt (Red Hat) | 102c932 | 2013-07-12 17:07:27 -0400 | [diff] [blame] | 155 | #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \ |
| 156 | *(__tracepoint_str) /* Trace_printk fmt' pointer */ \ |
| 157 | VMLINUX_SYMBOL(__stop___tracepoint_str) = .; |
Lai Jiangshan | 1ba28e0 | 2009-03-06 17:21:48 +0100 | [diff] [blame] | 158 | #else |
| 159 | #define TRACE_PRINTKS() |
Steven Rostedt (Red Hat) | 102c932 | 2013-07-12 17:07:27 -0400 | [diff] [blame] | 160 | #define TRACEPOINT_STR() |
Lai Jiangshan | 1ba28e0 | 2009-03-06 17:21:48 +0100 | [diff] [blame] | 161 | #endif |
| 162 | |
Frederic Weisbecker | bed1ffc | 2009-03-13 15:42:11 +0100 | [diff] [blame] | 163 | #ifdef CONFIG_FTRACE_SYSCALLS |
Steven Rostedt | 3d56e33 | 2011-02-02 17:06:09 -0500 | [diff] [blame] | 164 | #define TRACE_SYSCALLS() . = ALIGN(8); \ |
| 165 | VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ |
Frederic Weisbecker | bed1ffc | 2009-03-13 15:42:11 +0100 | [diff] [blame] | 166 | *(__syscalls_metadata) \ |
| 167 | VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; |
| 168 | #else |
| 169 | #define TRACE_SYSCALLS() |
| 170 | #endif |
| 171 | |
Peter Hurley | 470ca0d | 2015-03-09 16:27:21 -0400 | [diff] [blame] | 172 | #ifdef CONFIG_SERIAL_EARLYCON |
Daniel Kurtz | a72ac67 | 2018-04-06 17:21:53 -0600 | [diff] [blame] | 173 | #define EARLYCON_TABLE() . = ALIGN(8); \ |
Peter Hurley | 470ca0d | 2015-03-09 16:27:21 -0400 | [diff] [blame] | 174 | VMLINUX_SYMBOL(__earlycon_table) = .; \ |
| 175 | *(__earlycon_table) \ |
Peter Hurley | 2eaa790 | 2016-01-16 15:23:39 -0800 | [diff] [blame] | 176 | VMLINUX_SYMBOL(__earlycon_table_end) = .; |
Peter Hurley | 470ca0d | 2015-03-09 16:27:21 -0400 | [diff] [blame] | 177 | #else |
| 178 | #define EARLYCON_TABLE() |
| 179 | #endif |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 180 | |
Rob Herring | 0630928 | 2014-03-24 16:59:20 -0500 | [diff] [blame] | 181 | #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
| 182 | #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) |
Masahiro Yamada | 5ee02af | 2016-06-14 14:58:58 +0900 | [diff] [blame] | 183 | #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
Rob Herring | 0630928 | 2014-03-24 16:59:20 -0500 | [diff] [blame] | 184 | #define _OF_TABLE_0(name) |
| 185 | #define _OF_TABLE_1(name) \ |
Thomas Petazzoni | f6e916b | 2012-11-20 23:00:52 +0100 | [diff] [blame] | 186 | . = ALIGN(8); \ |
Rob Herring | 0630928 | 2014-03-24 16:59:20 -0500 | [diff] [blame] | 187 | VMLINUX_SYMBOL(__##name##_of_table) = .; \ |
| 188 | *(__##name##_of_table) \ |
| 189 | *(__##name##_of_table_end) |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 190 | |
Rob Herring | 0630928 | 2014-03-24 16:59:20 -0500 | [diff] [blame] | 191 | #define CLKSRC_OF_TABLES() OF_TABLE(CONFIG_CLKSRC_OF, clksrc) |
| 192 | #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
| 193 | #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) |
Will Deacon | 1cd076b | 2014-08-27 14:40:58 +0100 | [diff] [blame] | 194 | #define IOMMU_OF_TABLES() OF_TABLE(CONFIG_OF_IOMMU, iommu) |
Rob Herring | 0630928 | 2014-03-24 16:59:20 -0500 | [diff] [blame] | 195 | #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) |
| 196 | #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) |
Daniel Lezcano | 449e056 | 2015-02-02 16:32:45 +0100 | [diff] [blame] | 197 | #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
Stephen Boyd | 6c3ff8b | 2013-10-30 18:21:09 -0700 | [diff] [blame] | 198 | |
Marc Zyngier | e647b53 | 2015-09-28 15:49:12 +0100 | [diff] [blame] | 199 | #ifdef CONFIG_ACPI |
| 200 | #define ACPI_PROBE_TABLE(name) \ |
| 201 | . = ALIGN(8); \ |
| 202 | VMLINUX_SYMBOL(__##name##_acpi_probe_table) = .; \ |
| 203 | *(__##name##_acpi_probe_table) \ |
| 204 | VMLINUX_SYMBOL(__##name##_acpi_probe_table_end) = .; |
| 205 | #else |
| 206 | #define ACPI_PROBE_TABLE(name) |
| 207 | #endif |
| 208 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 209 | #define KERNEL_DTB() \ |
| 210 | STRUCT_ALIGN(); \ |
| 211 | VMLINUX_SYMBOL(__dtb_start) = .; \ |
| 212 | *(.dtb.init.rodata) \ |
| 213 | VMLINUX_SYMBOL(__dtb_end) = .; |
| 214 | |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 215 | /* |
| 216 | * .data section |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 217 | */ |
Sam Ravnborg | ca96725 | 2007-05-17 13:38:44 +0200 | [diff] [blame] | 218 | #define DATA_DATA \ |
Nicholas Piggin | 1fdee09 | 2017-07-26 22:46:27 +1000 | [diff] [blame] | 219 | *(DATA_MAIN) \ |
Sam Ravnborg | 312b148 | 2008-01-28 20:21:15 +0100 | [diff] [blame] | 220 | *(.ref.data) \ |
Mike Frysinger | d356c0b | 2010-10-26 14:22:29 -0700 | [diff] [blame] | 221 | *(.data..shared_aligned) /* percpu related */ \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 222 | MEM_KEEP(init.data) \ |
| 223 | MEM_KEEP(exit.data) \ |
Jan Beulich | 7ccaba5 | 2012-03-23 15:01:52 -0700 | [diff] [blame] | 224 | *(.data.unlikely) \ |
Mathieu Desnoyers | 6549864 | 2011-01-26 17:26:22 -0500 | [diff] [blame] | 225 | STRUCT_ALIGN(); \ |
Mathieu Desnoyers | 97e1c18 | 2008-07-18 12:16:16 -0400 | [diff] [blame] | 226 | *(__tracepoints) \ |
Jason Baron | e9d376f | 2009-02-05 11:51:38 -0500 | [diff] [blame] | 227 | /* implement dynamic printk debug */ \ |
Jason Baron | d430d3d | 2011-03-16 17:29:47 -0400 | [diff] [blame] | 228 | . = ALIGN(8); \ |
| 229 | VMLINUX_SYMBOL(__start___jump_table) = .; \ |
| 230 | *(__jump_table) \ |
| 231 | VMLINUX_SYMBOL(__stop___jump_table) = .; \ |
Jason Baron | e9d376f | 2009-02-05 11:51:38 -0500 | [diff] [blame] | 232 | . = ALIGN(8); \ |
| 233 | VMLINUX_SYMBOL(__start___verbose) = .; \ |
| 234 | *(__verbose) \ |
| 235 | VMLINUX_SYMBOL(__stop___verbose) = .; \ |
Steven Rostedt | 2bcd521 | 2008-11-21 01:30:54 -0500 | [diff] [blame] | 236 | LIKELY_PROFILE() \ |
Steven Rostedt | b77e38a | 2009-02-24 10:21:36 -0500 | [diff] [blame] | 237 | BRANCH_PROFILE() \ |
Steven Rostedt (Red Hat) | 102c932 | 2013-07-12 17:07:27 -0400 | [diff] [blame] | 238 | TRACE_PRINTKS() \ |
| 239 | TRACEPOINT_STR() |
Sam Ravnborg | ca96725 | 2007-05-17 13:38:44 +0200 | [diff] [blame] | 240 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 241 | /* |
| 242 | * Data section helpers |
| 243 | */ |
| 244 | #define NOSAVE_DATA \ |
| 245 | . = ALIGN(PAGE_SIZE); \ |
| 246 | VMLINUX_SYMBOL(__nosave_begin) = .; \ |
Denys Vlasenko | 07b3bb1 | 2010-02-20 01:03:52 +0100 | [diff] [blame] | 247 | *(.data..nosave) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 248 | . = ALIGN(PAGE_SIZE); \ |
| 249 | VMLINUX_SYMBOL(__nosave_end) = .; |
| 250 | |
| 251 | #define PAGE_ALIGNED_DATA(page_align) \ |
| 252 | . = ALIGN(page_align); \ |
Joerg Roedel | ce93e01 | 2020-07-21 11:34:48 +0200 | [diff] [blame] | 253 | *(.data..page_aligned) \ |
| 254 | . = ALIGN(page_align); |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 255 | |
| 256 | #define READ_MOSTLY_DATA(align) \ |
| 257 | . = ALIGN(align); \ |
Shaohua Li | 8369744 | 2011-01-12 16:59:38 -0800 | [diff] [blame] | 258 | *(.data..read_mostly) \ |
| 259 | . = ALIGN(align); |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 260 | |
| 261 | #define CACHELINE_ALIGNED_DATA(align) \ |
| 262 | . = ALIGN(align); \ |
Tim Abbott | 4af57b7 | 2010-02-20 01:03:34 +0100 | [diff] [blame] | 263 | *(.data..cacheline_aligned) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 264 | |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 265 | #define INIT_TASK_DATA(align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 266 | . = ALIGN(align); \ |
Borislav Petkov | 91ed140 | 2016-03-31 16:21:02 +0200 | [diff] [blame] | 267 | VMLINUX_SYMBOL(__start_init_task) = .; \ |
| 268 | *(.data..init_task) \ |
| 269 | VMLINUX_SYMBOL(__end_init_task) = .; |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 270 | |
| 271 | /* |
Heiko Carstens | 32fb2fc | 2016-06-07 12:20:51 +0200 | [diff] [blame] | 272 | * Allow architectures to handle ro_after_init data on their |
| 273 | * own by defining an empty RO_AFTER_INIT_DATA. |
| 274 | */ |
| 275 | #ifndef RO_AFTER_INIT_DATA |
Jakub Kicinski | d7c19b0 | 2016-11-10 10:46:44 -0800 | [diff] [blame] | 276 | #define RO_AFTER_INIT_DATA \ |
| 277 | __start_data_ro_after_init = .; \ |
| 278 | *(.data..ro_after_init) \ |
| 279 | __end_data_ro_after_init = .; |
Heiko Carstens | 32fb2fc | 2016-06-07 12:20:51 +0200 | [diff] [blame] | 280 | #endif |
| 281 | |
| 282 | /* |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 283 | * Read only Data |
| 284 | */ |
| 285 | #define RO_DATA_SECTION(align) \ |
Sam Ravnborg | 4096b46 | 2007-05-29 21:29:00 +0200 | [diff] [blame] | 286 | . = ALIGN((align)); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
Vivek Goyal | 6569580 | 2006-12-07 02:14:03 +0100 | [diff] [blame] | 288 | VMLINUX_SYMBOL(__start_rodata) = .; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | *(.rodata) *(.rodata.*) \ |
Heiko Carstens | 32fb2fc | 2016-06-07 12:20:51 +0200 | [diff] [blame] | 290 | RO_AFTER_INIT_DATA /* Read only after init */ \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | *(__vermagic) /* Kernel version magic */ \ |
Mathieu Desnoyers | 6549864 | 2011-01-26 17:26:22 -0500 | [diff] [blame] | 292 | . = ALIGN(8); \ |
| 293 | VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \ |
| 294 | *(__tracepoints_ptrs) /* Tracepoints: pointer array */\ |
| 295 | VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \ |
Mathieu Desnoyers | 97e1c18 | 2008-07-18 12:16:16 -0400 | [diff] [blame] | 296 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } \ |
| 298 | \ |
| 299 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ |
| 300 | *(.rodata1) \ |
| 301 | } \ |
| 302 | \ |
Jan Beulich | 6360b1f | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 303 | BUG_TABLE \ |
| 304 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | /* PCI quirks */ \ |
| 306 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ |
| 307 | VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ |
| 308 | *(.pci_fixup_early) \ |
| 309 | VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ |
| 310 | VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ |
| 311 | *(.pci_fixup_header) \ |
| 312 | VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ |
| 313 | VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ |
| 314 | *(.pci_fixup_final) \ |
| 315 | VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ |
| 316 | VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ |
| 317 | *(.pci_fixup_enable) \ |
| 318 | VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ |
Alan Cox | 1597cac | 2006-12-04 15:14:45 -0800 | [diff] [blame] | 319 | VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ |
| 320 | *(.pci_fixup_resume) \ |
| 321 | VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ |
Rafael J. Wysocki | e1a2a51 | 2008-05-15 21:51:31 +0200 | [diff] [blame] | 322 | VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ |
| 323 | *(.pci_fixup_resume_early) \ |
| 324 | VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ |
| 325 | VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ |
| 326 | *(.pci_fixup_suspend) \ |
| 327 | VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ |
Andreas Noever | 7d2a01b | 2014-06-03 22:04:09 +0200 | [diff] [blame] | 328 | VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .; \ |
| 329 | *(.pci_fixup_suspend_late) \ |
| 330 | VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | } \ |
| 332 | \ |
David Woodhouse | 5658c76 | 2008-05-23 13:52:42 +0100 | [diff] [blame] | 333 | /* Built-in firmware blobs */ \ |
| 334 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ |
| 335 | VMLINUX_SYMBOL(__start_builtin_fw) = .; \ |
| 336 | *(.builtin_fw) \ |
| 337 | VMLINUX_SYMBOL(__end_builtin_fw) = .; \ |
| 338 | } \ |
| 339 | \ |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 340 | TRACEDATA \ |
| 341 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | /* Kernel symbol table: Normal symbols */ \ |
| 343 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ |
| 344 | VMLINUX_SYMBOL(__start___ksymtab) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 345 | KEEP(*(SORT(___ksymtab+*))) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | VMLINUX_SYMBOL(__stop___ksymtab) = .; \ |
| 347 | } \ |
| 348 | \ |
| 349 | /* Kernel symbol table: GPL-only symbols */ \ |
| 350 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ |
| 351 | VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 352 | KEEP(*(SORT(___ksymtab_gpl+*))) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ |
| 354 | } \ |
| 355 | \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 356 | /* Kernel symbol table: Normal unused symbols */ \ |
| 357 | __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ |
| 358 | VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 359 | KEEP(*(SORT(___ksymtab_unused+*))) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 360 | VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ |
| 361 | } \ |
| 362 | \ |
| 363 | /* Kernel symbol table: GPL-only unused symbols */ \ |
| 364 | __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ |
| 365 | VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 366 | KEEP(*(SORT(___ksymtab_unused_gpl+*))) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 367 | VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ |
| 368 | } \ |
| 369 | \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 370 | /* Kernel symbol table: GPL-future-only symbols */ \ |
| 371 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ |
| 372 | VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 373 | KEEP(*(SORT(___ksymtab_gpl_future+*))) \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 374 | VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ |
| 375 | } \ |
| 376 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* Kernel symbol table: Normal symbols */ \ |
| 378 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ |
| 379 | VMLINUX_SYMBOL(__start___kcrctab) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 380 | KEEP(*(SORT(___kcrctab+*))) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | VMLINUX_SYMBOL(__stop___kcrctab) = .; \ |
| 382 | } \ |
| 383 | \ |
| 384 | /* Kernel symbol table: GPL-only symbols */ \ |
| 385 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ |
| 386 | VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 387 | KEEP(*(SORT(___kcrctab_gpl+*))) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ |
| 389 | } \ |
| 390 | \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 391 | /* Kernel symbol table: Normal unused symbols */ \ |
| 392 | __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ |
| 393 | VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 394 | KEEP(*(SORT(___kcrctab_unused+*))) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 395 | VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ |
| 396 | } \ |
| 397 | \ |
| 398 | /* Kernel symbol table: GPL-only unused symbols */ \ |
| 399 | __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ |
| 400 | VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 401 | KEEP(*(SORT(___kcrctab_unused_gpl+*))) \ |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 402 | VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ |
| 403 | } \ |
| 404 | \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 405 | /* Kernel symbol table: GPL-future-only symbols */ \ |
| 406 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ |
| 407 | VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 408 | KEEP(*(SORT(___kcrctab_gpl_future+*))) \ |
Greg Kroah-Hartman | 9f28bb7 | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 409 | VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ |
| 410 | } \ |
| 411 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | /* Kernel symbol table: strings */ \ |
| 413 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 414 | KEEP(*(__ksymtab_strings)) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | } \ |
| 416 | \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 417 | /* __*init sections */ \ |
| 418 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ |
Sam Ravnborg | 312b148 | 2008-01-28 20:21:15 +0100 | [diff] [blame] | 419 | *(.ref.rodata) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 420 | MEM_KEEP(init.rodata) \ |
| 421 | MEM_KEEP(exit.rodata) \ |
| 422 | } \ |
| 423 | \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | /* Built-in module parameters. */ \ |
| 425 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ |
| 426 | VMLINUX_SYMBOL(__start___param) = .; \ |
| 427 | *(__param) \ |
| 428 | VMLINUX_SYMBOL(__stop___param) = .; \ |
Dmitry Torokhov | e94965e | 2010-12-15 14:00:19 -0800 | [diff] [blame] | 429 | } \ |
| 430 | \ |
| 431 | /* Built-in module versions. */ \ |
| 432 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ |
| 433 | VMLINUX_SYMBOL(__start___modver) = .; \ |
| 434 | *(__modver) \ |
| 435 | VMLINUX_SYMBOL(__stop___modver) = .; \ |
Arjan van de Ven | edeed30 | 2008-01-30 13:34:08 +0100 | [diff] [blame] | 436 | . = ALIGN((align)); \ |
Vivek Goyal | 6569580 | 2006-12-07 02:14:03 +0100 | [diff] [blame] | 437 | VMLINUX_SYMBOL(__end_rodata) = .; \ |
Marcelo Tosatti | 7583ddf | 2006-09-27 01:51:02 -0700 | [diff] [blame] | 438 | } \ |
Sam Ravnborg | 4096b46 | 2007-05-29 21:29:00 +0200 | [diff] [blame] | 439 | . = ALIGN((align)); |
| 440 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 441 | /* RODATA & RO_DATA provided for backward compatibility. |
Sam Ravnborg | 4096b46 | 2007-05-29 21:29:00 +0200 | [diff] [blame] | 442 | * All archs are supposed to use RO_DATA() */ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 443 | #define RODATA RO_DATA_SECTION(4096) |
| 444 | #define RO_DATA(align) RO_DATA_SECTION(align) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | #define SECURITY_INIT \ |
Eric W. Biederman | 60bad7f | 2005-06-25 14:57:46 -0700 | [diff] [blame] | 447 | .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 449 | KEEP(*(.security_initcall.init)) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | VMLINUX_SYMBOL(__security_initcall_end) = .; \ |
| 451 | } |
| 452 | |
Nicholas Piggin | 1fdee09 | 2017-07-26 22:46:27 +1000 | [diff] [blame] | 453 | /* |
| 454 | * .text section. Map to function alignment to avoid address changes |
Nicholas Piggin | 0f4c4af | 2016-09-14 12:24:03 +1000 | [diff] [blame] | 455 | * during second ld run in second ld pass when generating System.map |
Nicholas Piggin | 1fdee09 | 2017-07-26 22:46:27 +1000 | [diff] [blame] | 456 | * |
| 457 | * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead |
| 458 | * code elimination is enabled, so these sections should be converted |
| 459 | * to use ".." first. |
| 460 | */ |
Sam Ravnborg | 7664709 | 2007-05-13 00:31:33 +0200 | [diff] [blame] | 461 | #define TEXT_TEXT \ |
| 462 | ALIGN_FUNCTION(); \ |
Nick Desaulniers | 7bae4bc | 2020-08-21 12:42:47 -0700 | [diff] [blame] | 463 | *(.text.hot .text.hot.*) \ |
| 464 | *(TEXT_MAIN .text.fixup) \ |
| 465 | *(.text.unlikely .text.unlikely.*) \ |
| 466 | *(.text.unknown .text.unknown.*) \ |
Sam Ravnborg | 312b148 | 2008-01-28 20:21:15 +0100 | [diff] [blame] | 467 | *(.ref.text) \ |
Nathan Chancellor | 2c20065 | 2021-07-30 19:31:08 -0700 | [diff] [blame] | 468 | *(.text.asan.* .text.tsan.*) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 469 | MEM_KEEP(init.text) \ |
Jan Beulich | fb5e2b3 | 2008-06-18 12:36:01 +0100 | [diff] [blame] | 470 | MEM_KEEP(exit.text) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 471 | |
Sam Ravnborg | 7664709 | 2007-05-13 00:31:33 +0200 | [diff] [blame] | 472 | |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 473 | /* sched.text is aling to function alignment to secure we have same |
| 474 | * address even at second ld pass when generating System.map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | #define SCHED_TEXT \ |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 476 | ALIGN_FUNCTION(); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | VMLINUX_SYMBOL(__sched_text_start) = .; \ |
| 478 | *(.sched.text) \ |
| 479 | VMLINUX_SYMBOL(__sched_text_end) = .; |
| 480 | |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 481 | /* spinlock.text is aling to function alignment to secure we have same |
| 482 | * address even at second ld pass when generating System.map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | #define LOCK_TEXT \ |
Sam Ravnborg | 6d30e3a | 2005-07-14 20:15:44 +0000 | [diff] [blame] | 484 | ALIGN_FUNCTION(); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | VMLINUX_SYMBOL(__lock_text_start) = .; \ |
| 486 | *(.spinlock.text) \ |
| 487 | VMLINUX_SYMBOL(__lock_text_end) = .; |
Prasanna S Panchamukhi | d0aaff9 | 2005-09-06 15:19:26 -0700 | [diff] [blame] | 488 | |
Chris Metcalf | 6727ad9 | 2016-10-07 17:02:55 -0700 | [diff] [blame] | 489 | #define CPUIDLE_TEXT \ |
| 490 | ALIGN_FUNCTION(); \ |
| 491 | VMLINUX_SYMBOL(__cpuidle_text_start) = .; \ |
| 492 | *(.cpuidle.text) \ |
| 493 | VMLINUX_SYMBOL(__cpuidle_text_end) = .; |
| 494 | |
Prasanna S Panchamukhi | d0aaff9 | 2005-09-06 15:19:26 -0700 | [diff] [blame] | 495 | #define KPROBES_TEXT \ |
| 496 | ALIGN_FUNCTION(); \ |
| 497 | VMLINUX_SYMBOL(__kprobes_text_start) = .; \ |
| 498 | *(.kprobes.text) \ |
| 499 | VMLINUX_SYMBOL(__kprobes_text_end) = .; |
Paolo 'Blaisorblade' Giarrusso | a7d0c21 | 2005-09-10 19:44:54 +0200 | [diff] [blame] | 500 | |
Jiri Olsa | ea71454 | 2011-03-07 19:10:39 +0100 | [diff] [blame] | 501 | #define ENTRY_TEXT \ |
| 502 | ALIGN_FUNCTION(); \ |
| 503 | VMLINUX_SYMBOL(__entry_text_start) = .; \ |
| 504 | *(.entry.text) \ |
| 505 | VMLINUX_SYMBOL(__entry_text_end) = .; |
| 506 | |
Alexander Potapenko | be7635e | 2016-03-25 14:22:05 -0700 | [diff] [blame] | 507 | #if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN) |
Frederic Weisbecker | a0343e8 | 2008-12-09 23:53:16 +0100 | [diff] [blame] | 508 | #define IRQENTRY_TEXT \ |
| 509 | ALIGN_FUNCTION(); \ |
| 510 | VMLINUX_SYMBOL(__irqentry_text_start) = .; \ |
| 511 | *(.irqentry.text) \ |
| 512 | VMLINUX_SYMBOL(__irqentry_text_end) = .; |
| 513 | #else |
| 514 | #define IRQENTRY_TEXT |
| 515 | #endif |
| 516 | |
Alexander Potapenko | be7635e | 2016-03-25 14:22:05 -0700 | [diff] [blame] | 517 | #if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN) |
| 518 | #define SOFTIRQENTRY_TEXT \ |
| 519 | ALIGN_FUNCTION(); \ |
| 520 | VMLINUX_SYMBOL(__softirqentry_text_start) = .; \ |
| 521 | *(.softirqentry.text) \ |
| 522 | VMLINUX_SYMBOL(__softirqentry_text_end) = .; |
| 523 | #else |
| 524 | #define SOFTIRQENTRY_TEXT |
| 525 | #endif |
| 526 | |
Sam Ravnborg | 37c514e | 2008-02-19 21:00:18 +0100 | [diff] [blame] | 527 | /* Section used for early init (in .S files) */ |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 528 | #define HEAD_TEXT *(.head.text) |
Sam Ravnborg | 37c514e | 2008-02-19 21:00:18 +0100 | [diff] [blame] | 529 | |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 530 | #define HEAD_TEXT_SECTION \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 531 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
| 532 | HEAD_TEXT \ |
| 533 | } |
| 534 | |
| 535 | /* |
| 536 | * Exception table |
| 537 | */ |
| 538 | #define EXCEPTION_TABLE(align) \ |
| 539 | . = ALIGN(align); \ |
| 540 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ |
| 541 | VMLINUX_SYMBOL(__start___ex_table) = .; \ |
| 542 | *(__ex_table) \ |
| 543 | VMLINUX_SYMBOL(__stop___ex_table) = .; \ |
| 544 | } |
| 545 | |
| 546 | /* |
| 547 | * Init task |
| 548 | */ |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 549 | #define INIT_TASK_DATA_SECTION(align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 550 | . = ALIGN(align); \ |
Sam Ravnborg | da5e37e | 2010-07-13 11:39:42 +0200 | [diff] [blame] | 551 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 552 | INIT_TASK_DATA(align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 553 | } |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 554 | |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 555 | #ifdef CONFIG_CONSTRUCTORS |
Heiko Carstens | 2a2325e | 2009-06-30 11:41:13 -0700 | [diff] [blame] | 556 | #define KERNEL_CTORS() . = ALIGN(8); \ |
| 557 | VMLINUX_SYMBOL(__ctors_start) = .; \ |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 558 | *(.ctors) \ |
Andrey Ryabinin | 9ddf825 | 2015-02-13 14:40:10 -0800 | [diff] [blame] | 559 | *(SORT(.init_array.*)) \ |
Frantisek Hrbata | eb3057d | 2013-10-14 18:08:46 +1030 | [diff] [blame] | 560 | *(.init_array) \ |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 561 | VMLINUX_SYMBOL(__ctors_end) = .; |
| 562 | #else |
| 563 | #define KERNEL_CTORS() |
| 564 | #endif |
| 565 | |
Sam Ravnborg | 01ba2bd | 2008-01-20 14:15:03 +0100 | [diff] [blame] | 566 | /* init and exit section handling */ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 567 | #define INIT_DATA \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 568 | KEEP(*(SORT(___kentry+*))) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 569 | *(.init.data) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 570 | MEM_DISCARD(init.data) \ |
Peter Oberparleiter | b99b87f | 2009-06-17 16:28:03 -0700 | [diff] [blame] | 571 | KERNEL_CTORS() \ |
John Reiser | 4b3b4c5 | 2009-07-27 11:23:50 -0700 | [diff] [blame] | 572 | MCOUNT_REC() \ |
Steven Rostedt | 9fd4932 | 2012-04-24 22:32:06 -0400 | [diff] [blame] | 573 | *(.init.rodata) \ |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 574 | FTRACE_EVENTS() \ |
Steven Rostedt | 3d56e33 | 2011-02-02 17:06:09 -0500 | [diff] [blame] | 575 | TRACE_SYSCALLS() \ |
Masami Hiramatsu | 376e242 | 2014-04-17 17:17:05 +0900 | [diff] [blame] | 576 | KPROBE_BLACKLIST() \ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 577 | MEM_DISCARD(init.rodata) \ |
Prashant Gaikwad | f2f6c25 | 2013-01-04 12:30:52 +0530 | [diff] [blame] | 578 | CLK_OF_TABLES() \ |
Marek Szyprowski | f618c47 | 2014-02-28 14:42:49 +0100 | [diff] [blame] | 579 | RESERVEDMEM_OF_TABLES() \ |
Stephen Warren | ae278a9 | 2012-11-19 16:41:20 -0700 | [diff] [blame] | 580 | CLKSRC_OF_TABLES() \ |
Will Deacon | 1cd076b | 2014-08-27 14:40:58 +0100 | [diff] [blame] | 581 | IOMMU_OF_TABLES() \ |
Stephen Boyd | 6c3ff8b | 2013-10-30 18:21:09 -0700 | [diff] [blame] | 582 | CPU_METHOD_OF_TABLES() \ |
Daniel Lezcano | 449e056 | 2015-02-02 16:32:45 +0100 | [diff] [blame] | 583 | CPUIDLE_METHOD_OF_TABLES() \ |
Thomas Petazzoni | f6e916b | 2012-11-20 23:00:52 +0100 | [diff] [blame] | 584 | KERNEL_DTB() \ |
Rob Herring | b0b6abd | 2014-03-27 08:06:16 -0500 | [diff] [blame] | 585 | IRQCHIP_OF_MATCH_TABLE() \ |
Marc Zyngier | 46e589a | 2015-09-28 15:49:13 +0100 | [diff] [blame] | 586 | ACPI_PROBE_TABLE(irqchip) \ |
Marc Zyngier | c625f76 | 2015-09-28 15:49:15 +0100 | [diff] [blame] | 587 | ACPI_PROBE_TABLE(clksrc) \ |
Peter Hurley | 2eaa790 | 2016-01-16 15:23:39 -0800 | [diff] [blame] | 588 | EARLYCON_TABLE() |
Sam Ravnborg | 01ba2bd | 2008-01-20 14:15:03 +0100 | [diff] [blame] | 589 | |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 590 | #define INIT_TEXT \ |
| 591 | *(.init.text) \ |
Dmitry Vyukov | e41f501 | 2016-07-14 12:07:29 -0700 | [diff] [blame] | 592 | *(.text.startup) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 593 | MEM_DISCARD(init.text) |
| 594 | |
| 595 | #define EXIT_DATA \ |
| 596 | *(.exit.data) \ |
Dmitry Vyukov | e41f501 | 2016-07-14 12:07:29 -0700 | [diff] [blame] | 597 | *(.fini_array) \ |
| 598 | *(.dtors) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 599 | MEM_DISCARD(exit.data) \ |
| 600 | MEM_DISCARD(exit.rodata) |
| 601 | |
| 602 | #define EXIT_TEXT \ |
| 603 | *(.exit.text) \ |
Dmitry Vyukov | e41f501 | 2016-07-14 12:07:29 -0700 | [diff] [blame] | 604 | *(.text.exit) \ |
Sam Ravnborg | eb8f689 | 2008-01-20 20:07:28 +0100 | [diff] [blame] | 605 | MEM_DISCARD(exit.text) |
Sam Ravnborg | 01ba2bd | 2008-01-20 14:15:03 +0100 | [diff] [blame] | 606 | |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 607 | #define EXIT_CALL \ |
| 608 | *(.exitcall.exit) |
| 609 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 610 | /* |
| 611 | * bss (Block Started by Symbol) - uninitialized data |
| 612 | * zeroed during startup |
| 613 | */ |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 614 | #define SBSS(sbss_align) \ |
| 615 | . = ALIGN(sbss_align); \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 616 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
| 617 | *(.sbss) \ |
| 618 | *(.scommon) \ |
| 619 | } |
| 620 | |
David Daney | c87728c | 2012-08-14 11:08:00 -0700 | [diff] [blame] | 621 | /* |
| 622 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra |
| 623 | * sections to the front of bss. |
| 624 | */ |
| 625 | #ifndef BSS_FIRST_SECTIONS |
| 626 | #define BSS_FIRST_SECTIONS |
| 627 | #endif |
| 628 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 629 | #define BSS(bss_align) \ |
| 630 | . = ALIGN(bss_align); \ |
| 631 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ |
David Daney | c87728c | 2012-08-14 11:08:00 -0700 | [diff] [blame] | 632 | BSS_FIRST_SECTIONS \ |
Joerg Roedel | ce93e01 | 2020-07-21 11:34:48 +0200 | [diff] [blame] | 633 | . = ALIGN(PAGE_SIZE); \ |
Tim Abbott | 7c74df0 | 2010-02-20 01:03:38 +0100 | [diff] [blame] | 634 | *(.bss..page_aligned) \ |
Joerg Roedel | ce93e01 | 2020-07-21 11:34:48 +0200 | [diff] [blame] | 635 | . = ALIGN(PAGE_SIZE); \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 636 | *(.dynbss) \ |
Nicholas Piggin | 1fdee09 | 2017-07-26 22:46:27 +1000 | [diff] [blame] | 637 | *(BSS_MAIN) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 638 | *(COMMON) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | /* |
| 642 | * DWARF debug sections. |
| 643 | * Symbols in the DWARF debugging sections are relative to |
| 644 | * the beginning of the section so we begin them at 0. |
| 645 | */ |
Paolo 'Blaisorblade' Giarrusso | a7d0c21 | 2005-09-10 19:44:54 +0200 | [diff] [blame] | 646 | #define DWARF_DEBUG \ |
| 647 | /* DWARF 1 */ \ |
| 648 | .debug 0 : { *(.debug) } \ |
| 649 | .line 0 : { *(.line) } \ |
| 650 | /* GNU DWARF 1 extensions */ \ |
| 651 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ |
| 652 | .debug_sfnames 0 : { *(.debug_sfnames) } \ |
| 653 | /* DWARF 1.1 and DWARF 2 */ \ |
| 654 | .debug_aranges 0 : { *(.debug_aranges) } \ |
| 655 | .debug_pubnames 0 : { *(.debug_pubnames) } \ |
| 656 | /* DWARF 2 */ \ |
| 657 | .debug_info 0 : { *(.debug_info \ |
| 658 | .gnu.linkonce.wi.*) } \ |
| 659 | .debug_abbrev 0 : { *(.debug_abbrev) } \ |
| 660 | .debug_line 0 : { *(.debug_line) } \ |
| 661 | .debug_frame 0 : { *(.debug_frame) } \ |
| 662 | .debug_str 0 : { *(.debug_str) } \ |
| 663 | .debug_loc 0 : { *(.debug_loc) } \ |
| 664 | .debug_macinfo 0 : { *(.debug_macinfo) } \ |
| 665 | /* SGI/MIPS DWARF 2 extensions */ \ |
| 666 | .debug_weaknames 0 : { *(.debug_weaknames) } \ |
| 667 | .debug_funcnames 0 : { *(.debug_funcnames) } \ |
| 668 | .debug_typenames 0 : { *(.debug_typenames) } \ |
| 669 | .debug_varnames 0 : { *(.debug_varnames) } \ |
| 670 | |
| 671 | /* Stabs debugging sections. */ |
| 672 | #define STABS_DEBUG \ |
| 673 | .stab 0 : { *(.stab) } \ |
| 674 | .stabstr 0 : { *(.stabstr) } \ |
| 675 | .stab.excl 0 : { *(.stab.excl) } \ |
| 676 | .stab.exclstr 0 : { *(.stab.exclstr) } \ |
| 677 | .stab.index 0 : { *(.stab.index) } \ |
| 678 | .stab.indexstr 0 : { *(.stab.indexstr) } \ |
| 679 | .comment 0 : { *(.comment) } |
Jeremy Fitzhardinge | 9c9b8b3 | 2006-09-25 23:32:26 -0700 | [diff] [blame] | 680 | |
Jan Beulich | 6360b1f | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 681 | #ifdef CONFIG_GENERIC_BUG |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 682 | #define BUG_TABLE \ |
| 683 | . = ALIGN(8); \ |
| 684 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 685 | VMLINUX_SYMBOL(__start___bug_table) = .; \ |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 686 | *(__bug_table) \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 687 | VMLINUX_SYMBOL(__stop___bug_table) = .; \ |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 688 | } |
Jan Beulich | 6360b1f | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 689 | #else |
| 690 | #define BUG_TABLE |
| 691 | #endif |
Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 692 | |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 693 | #ifdef CONFIG_PM_TRACE |
| 694 | #define TRACEDATA \ |
| 695 | . = ALIGN(4); \ |
| 696 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 697 | VMLINUX_SYMBOL(__tracedata_start) = .; \ |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 698 | *(.tracedata) \ |
Yoshinori Sato | c6de0026 | 2008-07-31 00:07:29 -0700 | [diff] [blame] | 699 | VMLINUX_SYMBOL(__tracedata_end) = .; \ |
Jan Beulich | 63687a5 | 2008-05-12 15:44:41 +0200 | [diff] [blame] | 700 | } |
| 701 | #else |
| 702 | #define TRACEDATA |
| 703 | #endif |
| 704 | |
Jeremy Fitzhardinge | 9c9b8b3 | 2006-09-25 23:32:26 -0700 | [diff] [blame] | 705 | #define NOTES \ |
Roland McGrath | cbe8712 | 2007-07-19 01:48:36 -0700 | [diff] [blame] | 706 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
| 707 | VMLINUX_SYMBOL(__start_notes) = .; \ |
| 708 | *(.note.*) \ |
| 709 | VMLINUX_SYMBOL(__stop_notes) = .; \ |
| 710 | } |
Andrew Morton | 61ce1ef | 2006-10-27 11:41:44 -0700 | [diff] [blame] | 711 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 712 | #define INIT_SETUP(initsetup_align) \ |
| 713 | . = ALIGN(initsetup_align); \ |
| 714 | VMLINUX_SYMBOL(__setup_start) = .; \ |
| 715 | *(.init.setup) \ |
| 716 | VMLINUX_SYMBOL(__setup_end) = .; |
| 717 | |
Pawel Moll | 026cee0 | 2012-03-26 12:50:51 +1030 | [diff] [blame] | 718 | #define INIT_CALLS_LEVEL(level) \ |
| 719 | VMLINUX_SYMBOL(__initcall##level##_start) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 720 | KEEP(*(.initcall##level##.init)) \ |
| 721 | KEEP(*(.initcall##level##s.init)) \ |
Andrew Morton | 61ce1ef | 2006-10-27 11:41:44 -0700 | [diff] [blame] | 722 | |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 723 | #define INIT_CALLS \ |
| 724 | VMLINUX_SYMBOL(__initcall_start) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 725 | KEEP(*(.initcallearly.init)) \ |
Pawel Moll | 026cee0 | 2012-03-26 12:50:51 +1030 | [diff] [blame] | 726 | INIT_CALLS_LEVEL(0) \ |
| 727 | INIT_CALLS_LEVEL(1) \ |
| 728 | INIT_CALLS_LEVEL(2) \ |
| 729 | INIT_CALLS_LEVEL(3) \ |
| 730 | INIT_CALLS_LEVEL(4) \ |
| 731 | INIT_CALLS_LEVEL(5) \ |
| 732 | INIT_CALLS_LEVEL(rootfs) \ |
| 733 | INIT_CALLS_LEVEL(6) \ |
| 734 | INIT_CALLS_LEVEL(7) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 735 | VMLINUX_SYMBOL(__initcall_end) = .; |
| 736 | |
| 737 | #define CON_INITCALL \ |
| 738 | VMLINUX_SYMBOL(__con_initcall_start) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 739 | KEEP(*(.con_initcall.init)) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 740 | VMLINUX_SYMBOL(__con_initcall_end) = .; |
| 741 | |
| 742 | #define SECURITY_INITCALL \ |
| 743 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 744 | KEEP(*(.security_initcall.init)) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 745 | VMLINUX_SYMBOL(__security_initcall_end) = .; |
| 746 | |
| 747 | #ifdef CONFIG_BLK_DEV_INITRD |
| 748 | #define INIT_RAM_FS \ |
Mike Frysinger | d882626 | 2010-10-26 14:22:30 -0700 | [diff] [blame] | 749 | . = ALIGN(4); \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 750 | VMLINUX_SYMBOL(__initramfs_start) = .; \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 751 | KEEP(*(.init.ramfs)) \ |
Hendrik Brueckner | ffe8018 | 2010-09-17 15:24:11 -0700 | [diff] [blame] | 752 | . = ALIGN(8); \ |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 753 | KEEP(*(.init.ramfs.info)) |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 754 | #else |
David Howells | eadfe21 | 2009-06-22 15:32:31 +0100 | [diff] [blame] | 755 | #define INIT_RAM_FS |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 756 | #endif |
| 757 | |
Tejun Heo | 023bf6f | 2009-07-09 11:27:40 +0900 | [diff] [blame] | 758 | /* |
| 759 | * Default discarded sections. |
| 760 | * |
| 761 | * Some archs want to discard exit text/data at runtime rather than |
| 762 | * link time due to cross-section references such as alt instructions, |
| 763 | * bug table, eh_frame, etc. DISCARDS must be the last of output |
| 764 | * section definitions so that such archs put those in earlier section |
| 765 | * definitions. |
| 766 | */ |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 767 | #define DISCARDS \ |
| 768 | /DISCARD/ : { \ |
| 769 | EXIT_TEXT \ |
| 770 | EXIT_DATA \ |
Tejun Heo | 023bf6f | 2009-07-09 11:27:40 +0900 | [diff] [blame] | 771 | EXIT_CALL \ |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 772 | *(.discard) \ |
Jeremy Fitzhardinge | c7f52cd | 2010-07-22 22:58:01 -0700 | [diff] [blame] | 773 | *(.discard.*) \ |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 774 | } |
| 775 | |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 776 | /** |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 777 | * PERCPU_INPUT - the percpu input sections |
| 778 | * @cacheline: cacheline size |
| 779 | * |
| 780 | * The core percpu section names and core symbols which do not rely |
| 781 | * directly upon load addresses. |
| 782 | * |
| 783 | * @cacheline is used to align subsections to avoid false cacheline |
| 784 | * sharing between subsections for different purposes. |
| 785 | */ |
| 786 | #define PERCPU_INPUT(cacheline) \ |
| 787 | VMLINUX_SYMBOL(__per_cpu_start) = .; \ |
Hugh Dickins | 61b7a40 | 2017-08-21 20:11:43 -0700 | [diff] [blame] | 788 | VMLINUX_SYMBOL(__per_cpu_user_mapped_start) = .; \ |
| 789 | *(.data..percpu..first) \ |
| 790 | . = ALIGN(cacheline); \ |
| 791 | *(.data..percpu..user_mapped) \ |
| 792 | *(.data..percpu..user_mapped..shared_aligned) \ |
| 793 | . = ALIGN(PAGE_SIZE); \ |
| 794 | *(.data..percpu..user_mapped..page_aligned) \ |
| 795 | VMLINUX_SYMBOL(__per_cpu_user_mapped_end) = .; \ |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 796 | . = ALIGN(PAGE_SIZE); \ |
| 797 | *(.data..percpu..page_aligned) \ |
| 798 | . = ALIGN(cacheline); \ |
Zhengyu He | 330d282 | 2014-07-01 12:11:47 -0700 | [diff] [blame] | 799 | *(.data..percpu..read_mostly) \ |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 800 | . = ALIGN(cacheline); \ |
| 801 | *(.data..percpu) \ |
| 802 | *(.data..percpu..shared_aligned) \ |
| 803 | VMLINUX_SYMBOL(__per_cpu_end) = .; |
| 804 | |
| 805 | /** |
Tejun Heo | 6b7c38d | 2009-01-19 12:21:28 +0900 | [diff] [blame] | 806 | * PERCPU_VADDR - define output section for percpu area |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 807 | * @cacheline: cacheline size |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 808 | * @vaddr: explicit base address (optional) |
| 809 | * @phdr: destination PHDR (optional) |
| 810 | * |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 811 | * Macro which expands to output section for percpu area. |
| 812 | * |
| 813 | * @cacheline is used to align subsections to avoid false cacheline |
| 814 | * sharing between subsections for different purposes. |
| 815 | * |
| 816 | * If @vaddr is not blank, it specifies explicit base address and all |
| 817 | * percpu symbols will be offset from the given address. If blank, |
| 818 | * @vaddr always equals @laddr + LOAD_OFFSET. |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 819 | * |
| 820 | * @phdr defines the output PHDR to use if not blank. Be warned that |
| 821 | * output PHDR is sticky. If @phdr is specified, the next output |
| 822 | * section in the linker script will go there too. @phdr should have |
| 823 | * a leading colon. |
| 824 | * |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 825 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
| 826 | * 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] | 827 | * address, use PERCPU_SECTION. |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 828 | */ |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 829 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
Ingo Molnar | dba3d36 | 2009-01-29 17:10:12 +0100 | [diff] [blame] | 830 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
Denys Vlasenko | 3d9a854 | 2010-02-20 01:03:43 +0100 | [diff] [blame] | 831 | .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ |
Tejun Heo | 6b7c38d | 2009-01-19 12:21:28 +0900 | [diff] [blame] | 832 | - LOAD_OFFSET) { \ |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 833 | PERCPU_INPUT(cacheline) \ |
Tejun Heo | 6b7c38d | 2009-01-19 12:21:28 +0900 | [diff] [blame] | 834 | } phdr \ |
Denys Vlasenko | 3d9a854 | 2010-02-20 01:03:43 +0100 | [diff] [blame] | 835 | . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 836 | |
| 837 | /** |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 838 | * PERCPU_SECTION - define output section for percpu area, simple version |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 839 | * @cacheline: cacheline size |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 840 | * |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 841 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
| 842 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 843 | * __per_cpu_start will be identical. |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 844 | * |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 845 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
Tejun Heo | 19df0c2 | 2011-01-25 14:26:50 +0100 | [diff] [blame] | 846 | * except that __per_cpu_load is defined as a relative symbol against |
| 847 | * .data..percpu which is required for relocatable x86_32 configuration. |
Tejun Heo | 3e5d8f9 | 2009-01-13 20:41:35 +0900 | [diff] [blame] | 848 | */ |
Tejun Heo | 0415b00d1 | 2011-03-24 18:50:09 +0100 | [diff] [blame] | 849 | #define PERCPU_SECTION(cacheline) \ |
| 850 | . = ALIGN(PAGE_SIZE); \ |
Denys Vlasenko | 3d9a854 | 2010-02-20 01:03:43 +0100 | [diff] [blame] | 851 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 852 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
Mike Frysinger | 6ea0c34 | 2011-04-04 01:41:32 +0200 | [diff] [blame] | 853 | PERCPU_INPUT(cacheline) \ |
Tejun Heo | 3ac6cff | 2009-01-30 16:32:22 +0900 | [diff] [blame] | 854 | } |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 855 | |
| 856 | |
| 857 | /* |
| 858 | * Definition of the high level *_SECTION macros |
| 859 | * They will fit only a subset of the architectures |
| 860 | */ |
| 861 | |
| 862 | |
| 863 | /* |
| 864 | * Writeable data. |
| 865 | * All sections are combined in a single .data section. |
| 866 | * The sections following CONSTRUCTORS are arranged so their |
| 867 | * typical alignment matches. |
| 868 | * A cacheline is typical/always less than a PAGE_SIZE so |
| 869 | * the sections that has this restriction (or similar) |
| 870 | * is located before the ones requiring PAGE_SIZE alignment. |
| 871 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 872 | * matches the requirement of PAGE_ALIGNED_DATA. |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 873 | * |
Sam Ravnborg | 7923f90 | 2009-06-14 22:10:41 +0200 | [diff] [blame] | 874 | * use 0 as page_align if page_aligned data is not used */ |
Paul Mundt | 73f1d93 | 2009-06-24 01:04:36 +0900 | [diff] [blame] | 875 | #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 876 | . = ALIGN(PAGE_SIZE); \ |
| 877 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ |
Tim Abbott | 39a449d | 2009-06-23 18:53:15 -0400 | [diff] [blame] | 878 | INIT_TASK_DATA(inittask) \ |
Tim Abbott | 1b20862 | 2009-09-24 10:36:16 -0400 | [diff] [blame] | 879 | NOSAVE_DATA \ |
| 880 | PAGE_ALIGNED_DATA(pagealigned) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 881 | CACHELINE_ALIGNED_DATA(cacheline) \ |
| 882 | READ_MOSTLY_DATA(cacheline) \ |
| 883 | DATA_DATA \ |
| 884 | CONSTRUCTORS \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 885 | } |
| 886 | |
| 887 | #define INIT_TEXT_SECTION(inittext_align) \ |
| 888 | . = ALIGN(inittext_align); \ |
| 889 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ |
| 890 | VMLINUX_SYMBOL(_sinittext) = .; \ |
| 891 | INIT_TEXT \ |
| 892 | VMLINUX_SYMBOL(_einittext) = .; \ |
| 893 | } |
| 894 | |
| 895 | #define INIT_DATA_SECTION(initsetup_align) \ |
| 896 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ |
| 897 | INIT_DATA \ |
| 898 | INIT_SETUP(initsetup_align) \ |
| 899 | INIT_CALLS \ |
| 900 | CON_INITCALL \ |
| 901 | SECURITY_INITCALL \ |
| 902 | INIT_RAM_FS \ |
| 903 | } |
| 904 | |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 905 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
| 906 | . = ALIGN(sbss_align); \ |
| 907 | VMLINUX_SYMBOL(__bss_start) = .; \ |
| 908 | SBSS(sbss_align) \ |
Sam Ravnborg | ef53dae | 2009-06-07 20:46:37 +0200 | [diff] [blame] | 909 | BSS(bss_align) \ |
Tim Abbott | 04e448d | 2009-07-12 18:23:33 -0400 | [diff] [blame] | 910 | . = ALIGN(stop_align); \ |
| 911 | VMLINUX_SYMBOL(__bss_stop) = .; |