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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 | #ifdef CONFIG_PPC64 #define PROVIDE32(x) PROVIDE(__unused__##x) #else #define PROVIDE32(x) PROVIDE(x) #endif #include <asm/page.h> #include <asm-generic/vmlinux.lds.h> #include <asm/cache.h> #include <asm/thread_info.h> ENTRY(_stext) PHDRS { kernel PT_LOAD FLAGS(7); /* RWX */ notes PT_NOTE FLAGS(0); dummy PT_NOTE FLAGS(0); /* binutils < 2.18 has a bug that makes it misbehave when taking an ELF file with all segments at load address 0 as input. This happens when running "strip" on vmlinux, because of the AT() magic in this linker script. People using GCC >= 4.2 won't run into this problem, because the "build-id" support will put some data into the "notes" segment (at a non-zero load address). To work around this, we force some data into both the "dummy" segment and the kernel segment, so the dummy segment will get a non-zero load address. It's not enough to always create the "notes" segment, since if nothing gets assigned to it, its load address will be zero. */ } #ifdef CONFIG_PPC64 OUTPUT_ARCH(powerpc:common64) jiffies = jiffies_64; #else OUTPUT_ARCH(powerpc:common) jiffies = jiffies_64 + 4; #endif SECTIONS { . = 0; reloc_start = .; . = KERNELBASE; /* * Text, read only data and other permanent read-only sections */ /* Text and gots */ .text : AT(ADDR(.text) - LOAD_OFFSET) { ALIGN_FUNCTION(); HEAD_TEXT _text = .; /* careful! __ftr_alt_* sections need to be close to .text */ *(.text .fixup __ftr_alt_* .ref.text) SCHED_TEXT LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT #ifdef CONFIG_PPC32 *(.got1) __got2_start = .; *(.got2) __got2_end = .; #endif /* CONFIG_PPC32 */ } :kernel . = ALIGN(PAGE_SIZE); _etext = .; PROVIDE32 (etext = .); /* Read-only data */ RODATA EXCEPTION_TABLE(0) NOTES :kernel :notes /* The dummy segment contents for the bug workaround mentioned above near PHDRS. */ .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) { LONG(0) LONG(0) LONG(0) } :kernel :dummy /* * Init sections discarded at runtime */ . = ALIGN(PAGE_SIZE); __init_begin = .; INIT_TEXT_SECTION(PAGE_SIZE) :kernel /* .exit.text is discarded at runtime, not link time, * to deal with references from __bug_table */ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { EXIT_TEXT } .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { INIT_DATA __vtop_table_begin = .; *(.vtop_fixup); __vtop_table_end = .; __ptov_table_begin = .; *(.ptov_fixup); __ptov_table_end = .; } .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { INIT_SETUP(16) } .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { INIT_CALLS } .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { CON_INITCALL } SECURITY_INIT . = ALIGN(8); __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { __start___ftr_fixup = .; *(__ftr_fixup) __stop___ftr_fixup = .; } . = ALIGN(8); __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { __start___mmu_ftr_fixup = .; *(__mmu_ftr_fixup) __stop___mmu_ftr_fixup = .; } . = ALIGN(8); __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { __start___lwsync_fixup = .; *(__lwsync_fixup) __stop___lwsync_fixup = .; } #ifdef CONFIG_PPC64 . = ALIGN(8); __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { __start___fw_ftr_fixup = .; *(__fw_ftr_fixup) __stop___fw_ftr_fixup = .; } #endif .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { INIT_RAM_FS } PERCPU_SECTION(L1_CACHE_BYTES) . = ALIGN(8); .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { __machine_desc_start = . ; *(.machine.desc) __machine_desc_end = . ; } #ifdef CONFIG_RELOCATABLE . = ALIGN(8); .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) { #ifdef CONFIG_RELOCATABLE_PPC32 __dynamic_symtab = .; #endif *(.dynsym) } .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) { __dynamic_start = .; *(.dynamic) } .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) { __rela_dyn_start = .; *(.rela*) } #endif /* freed after init ends here */ . = ALIGN(PAGE_SIZE); __init_end = .; /* * And now the various read/write data */ . = ALIGN(PAGE_SIZE); _sdata = .; #ifdef CONFIG_PPC32 .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA *(.sdata) *(.got.plt) *(.got) } #else .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA *(.data.rel*) *(.toc1) *(.branch_lt) } .opd : AT(ADDR(.opd) - LOAD_OFFSET) { *(.opd) } .got : AT(ADDR(.got) - LOAD_OFFSET) { __toc_start = .; *(.got) *(.toc) } #endif /* The initial task and kernel stack */ INIT_TASK_DATA_SECTION(THREAD_SIZE) .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { PAGE_ALIGNED_DATA(PAGE_SIZE) } .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) } .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { READ_MOSTLY_DATA(L1_CACHE_BYTES) } . = ALIGN(PAGE_SIZE); .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { NOSAVE_DATA } . = ALIGN(PAGE_SIZE); _edata = .; PROVIDE32 (edata = .); /* * And finally the bss */ BSS_SECTION(0, 0, 0) . = ALIGN(PAGE_SIZE); _end = . ; PROVIDE32 (end = .); /* Sections to be discarded. */ DISCARDS } |