2 #define PROVIDE32(x) PROVIDE(__unused__##x)
4 #define PROVIDE32(x) PROVIDE(x)
7 #include <asm-generic/vmlinux.lds.h>
9 #include <asm/thread_info.h>
14 kernel PT_LOAD FLAGS(7); /* RWX */
15 notes PT_NOTE FLAGS(0);
16 dummy PT_NOTE FLAGS(0);
18 /* binutils < 2.18 has a bug that makes it misbehave when taking an
19 ELF file with all segments at load address 0 as input. This
20 happens when running "strip" on vmlinux, because of the AT() magic
21 in this linker script. People using GCC >= 4.2 won't run into
22 this problem, because the "build-id" support will put some data
23 into the "notes" segment (at a non-zero load address).
25 To work around this, we force some data into both the "dummy"
26 segment and the kernel segment, so the dummy segment will get a
27 non-zero load address. It's not enough to always create the
28 "notes" segment, since if nothing gets assigned to it, its load
29 address will be zero. */
33 OUTPUT_ARCH(powerpc:common64)
36 OUTPUT_ARCH(powerpc:common)
37 jiffies = jiffies_64 + 4;
44 * Text, read only data and other permanent read-only sections
52 * This needs to be in its own output section to avoid ld placing
53 * branch trampoline stubs randomly throughout the fixed sections,
54 * which it will do (even if the branch comes from another section)
55 * in order to optimize stub generation.
57 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
59 KEEP(*(.head.text.first_256B));
60 #ifdef CONFIG_PPC_BOOK3E
62 KEEP(*(.head.text.real_vectors));
63 *(.head.text.real_trampolines);
64 KEEP(*(.head.text.virt_vectors));
65 *(.head.text.virt_trampolines);
66 # if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
67 KEEP(*(.head.data.fwnmi_page));
70 #else /* !CONFIG_PPC64 */
79 * BLOCK(0) overrides the default output section alignment because
80 * this needs to start right after .head.text in order for fixed
81 * section placement to work.
83 .text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {
84 #ifdef CONFIG_LD_HEAD_STUB_CATCH
85 *(.linker_stub_catch);
90 .text : AT(ADDR(.text) - LOAD_OFFSET) {
93 /* careful! __ftr_alt_* sections need to be close to .text */
94 *(.text .fixup __ftr_alt_* .ref.text)
102 * -Os builds call FP save/restore functions. The powerpc64
103 * linker generates those on demand in the .sfpr section.
104 * .sfpr gets placed at the beginning of a group of input
105 * sections, which can break start-of-text offset if it is
106 * included with the main text sections, so put it by itself.
117 #endif /* CONFIG_PPC32 */
121 . = ALIGN(PAGE_SIZE);
123 PROVIDE32 (etext = .);
132 /* The dummy segment contents for the bug workaround mentioned above
134 .dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
141 * Init sections discarded at runtime
143 . = ALIGN(PAGE_SIZE);
145 INIT_TEXT_SECTION(PAGE_SIZE) :kernel
147 /* .exit.text is discarded at runtime, not link time,
148 * to deal with references from __bug_table
150 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
154 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
156 __vtop_table_begin = .;
158 __vtop_table_end = .;
159 __ptov_table_begin = .;
161 __ptov_table_end = .;
164 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
168 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
172 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
179 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
180 __start___ftr_fixup = .;
182 __stop___ftr_fixup = .;
185 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
186 __start___mmu_ftr_fixup = .;
188 __stop___mmu_ftr_fixup = .;
191 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
192 __start___lwsync_fixup = .;
194 __stop___lwsync_fixup = .;
198 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
199 __start___fw_ftr_fixup = .;
201 __stop___fw_ftr_fixup = .;
204 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
208 PERCPU_SECTION(L1_CACHE_BYTES)
211 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
212 __machine_desc_start = . ;
214 __machine_desc_end = . ;
216 #ifdef CONFIG_RELOCATABLE
218 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
221 __dynamic_symtab = .;
225 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
226 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
231 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
232 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
233 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
235 __rela_dyn_start = .;
239 /* .exit.data is discarded at runtime, not link time,
240 * to deal with references from .exit.text
242 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
246 /* freed after init ends here */
247 . = ALIGN(PAGE_SIZE);
251 * And now the various read/write data
254 . = ALIGN(PAGE_SIZE);
258 .data : AT(ADDR(.data) - LOAD_OFFSET) {
264 .data : AT(ADDR(.data) - LOAD_OFFSET) {
271 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
276 .got : AT(ADDR(.got) - LOAD_OFFSET) {
278 #ifndef CONFIG_RELOCATABLE
279 __prom_init_toc_start = .;
280 arch/powerpc/kernel/prom_init.o*(.toc .got)
281 __prom_init_toc_end = .;
288 /* The initial task and kernel stack */
289 INIT_TASK_DATA_SECTION(THREAD_SIZE)
291 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
292 PAGE_ALIGNED_DATA(PAGE_SIZE)
295 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
296 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
299 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
300 READ_MOSTLY_DATA(L1_CACHE_BYTES)
303 . = ALIGN(PAGE_SIZE);
304 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
310 . = ALIGN(PAGE_SIZE);
312 PROVIDE32 (edata = .);
315 * And finally the bss
320 . = ALIGN(PAGE_SIZE);
324 /* Sections to be discarded. */