x86_64: prepare shared kernel/vmlinux.lds.S

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 239 insertions, 234 deletions

diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S
index ba8ea97..849ee61 100644
--- a/arch/x86_64/kernel/vmlinux.lds.S
+++ b/arch/x86_64/kernel/vmlinux.lds.S
@@ -1,235 +1,5 @@
-/* ld script to make x86-64 Linux kernel
- * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
- */
-
-#define LOAD_OFFSET __START_KERNEL_map
-
-#include <asm-generic/vmlinux.lds.h>
-#include <asm/page.h>
-
-#undef i386	/* in case the preprocessor is a 32bit one */
-
-OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
-OUTPUT_ARCH(i386:x86-64)
-ENTRY(phys_startup_64)
-jiffies_64 = jiffies;
-_proxy_pda = 1;
-PHDRS {
-	text PT_LOAD FLAGS(5);	/* R_E */
-	data PT_LOAD FLAGS(7);	/* RWE */
-	user PT_LOAD FLAGS(7);	/* RWE */
-	data.init PT_LOAD FLAGS(7);	/* RWE */
-	note PT_NOTE FLAGS(4);	/* R__ */
-}
-SECTIONS
-{
-  . = __START_KERNEL;
-  phys_startup_64 = startup_64 - LOAD_OFFSET;
-  _text = .;			/* Text and read-only data */
-  .text :  AT(ADDR(.text) - LOAD_OFFSET) {
-	/* First the code that has to be first for bootstrapping */
-	*(.text.head)
-	_stext = .;
-	/* Then the rest */
-	TEXT_TEXT
-	SCHED_TEXT
-	LOCK_TEXT
-	KPROBES_TEXT
-	*(.fixup)
-	*(.gnu.warning)
-	} :text = 0x9090
-  				/* out-of-line lock text */
-  .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }
-
-  _etext = .;			/* End of text section */
-
-  . = ALIGN(16);		/* Exception table */
-  __start___ex_table = .;
-  __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
-  __stop___ex_table = .;
-
-  NOTES :text :note
-
-  BUG_TABLE :text
-
-  RODATA
-
-  . = ALIGN(4);
-  .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
-  	__tracedata_start = .;
-	*(.tracedata)
-  	__tracedata_end = .;
-  }
-
-  . = ALIGN(PAGE_SIZE);        /* Align data segment to page size boundary */
-				/* Data */
-  .data : AT(ADDR(.data) - LOAD_OFFSET) {
-	DATA_DATA
-	CONSTRUCTORS
-	} :data
-
-  _edata = .;			/* End of data section */
-
-  . = ALIGN(PAGE_SIZE);
-  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
-  .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
-	*(.data.cacheline_aligned)
-  }
-  . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
-  .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
-  	*(.data.read_mostly)
-  }
-
-#define VSYSCALL_ADDR (-10*1024*1024)
-#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
-#define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
-
-#define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
-#define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
-
-#define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
-#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
-
-  . = VSYSCALL_ADDR;
-  .vsyscall_0 :	 AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) } :user
-  __vsyscall_0 = VSYSCALL_VIRT_ADDR;
-
-  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
-  .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) { *(.vsyscall_fn) }
-  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
-  .vsyscall_gtod_data : AT(VLOAD(.vsyscall_gtod_data))
-		{ *(.vsyscall_gtod_data) }
-  vsyscall_gtod_data = VVIRT(.vsyscall_gtod_data);
-  .vsyscall_clock : AT(VLOAD(.vsyscall_clock))
-		{ *(.vsyscall_clock) }
-  vsyscall_clock = VVIRT(.vsyscall_clock);
-
-
-  .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1))
-		{ *(.vsyscall_1) }
-  .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2))
-		{ *(.vsyscall_2) }
-
-  .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
-  vgetcpu_mode = VVIRT(.vgetcpu_mode);
-
-  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
-  .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
-  jiffies = VVIRT(.jiffies);
-
-  .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3))
-		{ *(.vsyscall_3) }
-
-  . = VSYSCALL_VIRT_ADDR + 4096;
-
-#undef VSYSCALL_ADDR
-#undef VSYSCALL_PHYS_ADDR
-#undef VSYSCALL_VIRT_ADDR
-#undef VLOAD_OFFSET
-#undef VLOAD
-#undef VVIRT_OFFSET
-#undef VVIRT
-
-  . = ALIGN(8192);		/* init_task */
-  .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
-	*(.data.init_task)
-  }:data.init
-
-  . = ALIGN(4096);
-  .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
-	*(.data.page_aligned)
-  }
-
-  /* might get freed after init */
-  . = ALIGN(4096);
-  __smp_alt_begin = .;
-  __smp_locks = .;
-  .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
-	*(.smp_locks)
-  }
-  __smp_locks_end = .;
-  . = ALIGN(4096);
-  __smp_alt_end = .;
-
-  . = ALIGN(4096);		/* Init code and data */
-  __init_begin = .;
-  .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
-	_sinittext = .;
-	*(.init.text)
-	_einittext = .;
-  }
-  __initdata_begin = .;
-  .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
-  __initdata_end = .;
-  . = ALIGN(16);
-  __setup_start = .;
-  .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
-  __setup_end = .;
-  __initcall_start = .;
-  .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
-	INITCALLS
-  }
-  __initcall_end = .;
-  __con_initcall_start = .;
-  .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
-	*(.con_initcall.init)
-  }
-  __con_initcall_end = .;
-  SECURITY_INIT
-  . = ALIGN(8);
-  __alt_instructions = .;
-  .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
-	*(.altinstructions)
-  }
-  __alt_instructions_end = .; 
-  .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
-	*(.altinstr_replacement)
-  }
-  /* .exit.text is discard at runtime, not link time, to deal with references
-     from .altinstructions and .eh_frame */
-  .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
-  .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
-
-/* vdso blob that is mapped into user space */
-  vdso_start = . ;
-  .vdso  : AT(ADDR(.vdso) - LOAD_OFFSET) { *(.vdso) }
-  . = ALIGN(4096);
-  vdso_end = .;
-
-#ifdef CONFIG_BLK_DEV_INITRD
-  . = ALIGN(4096);
-  __initramfs_start = .;
-  .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
-  __initramfs_end = .;
+#ifdef CONFIG_X86_32
+# include "vmlinux_32.lds.S"
+#else
+# include "vmlinux_64.lds.S"
 #endif
-
-  PERCPU(4096)
-
-  . = ALIGN(4096);
-  __init_end = .;
-
-  . = ALIGN(4096);
-  __nosave_begin = .;
-  .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
-  . = ALIGN(4096);
-  __nosave_end = .;
-
-  __bss_start = .;		/* BSS */
-  .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
-	*(.bss.page_aligned)
-	*(.bss)
-	}
-  __bss_stop = .;
-
-  _end = . ;
-
-  /* Sections to be discarded */
-  /DISCARD/ : {
-	*(.exitcall.exit)
-	*(.eh_frame)
-	}
-
-  STABS_DEBUG
-
-  DWARF_DEBUG
-}
diff --git a/arch/x86_64/kernel/vmlinux_64.lds.S b/arch/x86_64/kernel/vmlinux_64.lds.S
new file mode 100644
index 0000000..ba8ea97
--- /dev/null
+++ b/arch/x86_64/kernel/vmlinux_64.lds.S
@@ -0,0 +1,235 @@
+/* ld script to make x86-64 Linux kernel
+ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
+ */
+
+#define LOAD_OFFSET __START_KERNEL_map
+
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/page.h>
+
+#undef i386	/* in case the preprocessor is a 32bit one */
+
+OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
+OUTPUT_ARCH(i386:x86-64)
+ENTRY(phys_startup_64)
+jiffies_64 = jiffies;
+_proxy_pda = 1;
+PHDRS {
+	text PT_LOAD FLAGS(5);	/* R_E */
+	data PT_LOAD FLAGS(7);	/* RWE */
+	user PT_LOAD FLAGS(7);	/* RWE */
+	data.init PT_LOAD FLAGS(7);	/* RWE */
+	note PT_NOTE FLAGS(4);	/* R__ */
+}
+SECTIONS
+{
+  . = __START_KERNEL;
+  phys_startup_64 = startup_64 - LOAD_OFFSET;
+  _text = .;			/* Text and read-only data */
+  .text :  AT(ADDR(.text) - LOAD_OFFSET) {
+	/* First the code that has to be first for bootstrapping */
+	*(.text.head)
+	_stext = .;
+	/* Then the rest */
+	TEXT_TEXT
+	SCHED_TEXT
+	LOCK_TEXT
+	KPROBES_TEXT
+	*(.fixup)
+	*(.gnu.warning)
+	} :text = 0x9090
+  				/* out-of-line lock text */
+  .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }
+
+  _etext = .;			/* End of text section */
+
+  . = ALIGN(16);		/* Exception table */
+  __start___ex_table = .;
+  __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
+  __stop___ex_table = .;
+
+  NOTES :text :note
+
+  BUG_TABLE :text
+
+  RODATA
+
+  . = ALIGN(4);
+  .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
+  	__tracedata_start = .;
+	*(.tracedata)
+  	__tracedata_end = .;
+  }
+
+  . = ALIGN(PAGE_SIZE);        /* Align data segment to page size boundary */
+				/* Data */
+  .data : AT(ADDR(.data) - LOAD_OFFSET) {
+	DATA_DATA
+	CONSTRUCTORS
+	} :data
+
+  _edata = .;			/* End of data section */
+
+  . = ALIGN(PAGE_SIZE);
+  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
+  .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
+	*(.data.cacheline_aligned)
+  }
+  . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
+  .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
+  	*(.data.read_mostly)
+  }
+
+#define VSYSCALL_ADDR (-10*1024*1024)
+#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
+#define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
+
+#define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
+#define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
+
+#define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
+#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
+
+  . = VSYSCALL_ADDR;
+  .vsyscall_0 :	 AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) } :user
+  __vsyscall_0 = VSYSCALL_VIRT_ADDR;
+
+  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
+  .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) { *(.vsyscall_fn) }
+  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
+  .vsyscall_gtod_data : AT(VLOAD(.vsyscall_gtod_data))
+		{ *(.vsyscall_gtod_data) }
+  vsyscall_gtod_data = VVIRT(.vsyscall_gtod_data);
+  .vsyscall_clock : AT(VLOAD(.vsyscall_clock))
+		{ *(.vsyscall_clock) }
+  vsyscall_clock = VVIRT(.vsyscall_clock);
+
+
+  .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1))
+		{ *(.vsyscall_1) }
+  .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2))
+		{ *(.vsyscall_2) }
+
+  .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
+  vgetcpu_mode = VVIRT(.vgetcpu_mode);
+
+  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
+  .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
+  jiffies = VVIRT(.jiffies);
+
+  .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3))
+		{ *(.vsyscall_3) }
+
+  . = VSYSCALL_VIRT_ADDR + 4096;
+
+#undef VSYSCALL_ADDR
+#undef VSYSCALL_PHYS_ADDR
+#undef VSYSCALL_VIRT_ADDR
+#undef VLOAD_OFFSET
+#undef VLOAD
+#undef VVIRT_OFFSET
+#undef VVIRT
+
+  . = ALIGN(8192);		/* init_task */
+  .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
+	*(.data.init_task)
+  }:data.init
+
+  . = ALIGN(4096);
+  .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
+	*(.data.page_aligned)
+  }
+
+  /* might get freed after init */
+  . = ALIGN(4096);
+  __smp_alt_begin = .;
+  __smp_locks = .;
+  .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
+	*(.smp_locks)
+  }
+  __smp_locks_end = .;
+  . = ALIGN(4096);
+  __smp_alt_end = .;
+
+  . = ALIGN(4096);		/* Init code and data */
+  __init_begin = .;
+  .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
+	_sinittext = .;
+	*(.init.text)
+	_einittext = .;
+  }
+  __initdata_begin = .;
+  .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
+  __initdata_end = .;
+  . = ALIGN(16);
+  __setup_start = .;
+  .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
+  __setup_end = .;
+  __initcall_start = .;
+  .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
+	INITCALLS
+  }
+  __initcall_end = .;
+  __con_initcall_start = .;
+  .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
+	*(.con_initcall.init)
+  }
+  __con_initcall_end = .;
+  SECURITY_INIT
+  . = ALIGN(8);
+  __alt_instructions = .;
+  .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
+	*(.altinstructions)
+  }
+  __alt_instructions_end = .; 
+  .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
+	*(.altinstr_replacement)
+  }
+  /* .exit.text is discard at runtime, not link time, to deal with references
+     from .altinstructions and .eh_frame */
+  .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
+  .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
+
+/* vdso blob that is mapped into user space */
+  vdso_start = . ;
+  .vdso  : AT(ADDR(.vdso) - LOAD_OFFSET) { *(.vdso) }
+  . = ALIGN(4096);
+  vdso_end = .;
+
+#ifdef CONFIG_BLK_DEV_INITRD
+  . = ALIGN(4096);
+  __initramfs_start = .;
+  .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
+  __initramfs_end = .;
+#endif
+
+  PERCPU(4096)
+
+  . = ALIGN(4096);
+  __init_end = .;
+
+  . = ALIGN(4096);
+  __nosave_begin = .;
+  .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
+  . = ALIGN(4096);
+  __nosave_end = .;
+
+  __bss_start = .;		/* BSS */
+  .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
+	*(.bss.page_aligned)
+	*(.bss)
+	}
+  __bss_stop = .;
+
+  _end = . ;
+
+  /* Sections to be discarded */
+  /DISCARD/ : {
+	*(.exitcall.exit)
+	*(.eh_frame)
+	}
+
+  STABS_DEBUG
+
+  DWARF_DEBUG
+}