diff options
Diffstat (limited to 'arch/x86/kernel/vmlinux_64.lds.S')
| -rw-r--r-- | arch/x86/kernel/vmlinux_64.lds.S | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S new file mode 100644 index 00000000000..ba8ea97abd2 --- /dev/null +++ b/arch/x86/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 +} |