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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/powerpc/kernel/vmlinux.lds.S
Initial import
Diffstat (limited to 'arch/powerpc/kernel/vmlinux.lds.S')
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S265
1 files changed, 265 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
new file mode 100644
index 000000000..1db685104
--- /dev/null
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -0,0 +1,265 @@
+#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
+{
+ . = 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)
+ }
+
+ . = ALIGN(256);
+ .got : AT(ADDR(.got) - LOAD_OFFSET) {
+ __toc_start = .;
+#ifndef CONFIG_RELOCATABLE
+ __prom_init_toc_start = .;
+ arch/powerpc/kernel/prom_init.o*(.toc .got)
+ __prom_init_toc_end = .;
+#endif
+ *(.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
+}