1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * This is the infamous ld script for the 64 bits vdso 4 * library 5 */ 6#include <asm/vdso.h> 7#include <asm/page.h> 8#include <asm-generic/vmlinux.lds.h> 9 10#ifdef __LITTLE_ENDIAN__ 11OUTPUT_FORMAT("elf64-powerpcle", "elf64-powerpcle", "elf64-powerpcle") 12#else 13OUTPUT_FORMAT("elf64-powerpc", "elf64-powerpc", "elf64-powerpc") 14#endif 15OUTPUT_ARCH(powerpc:common64) 16 17SECTIONS 18{ 19 PROVIDE(_vdso_datapage = . - 2 * PAGE_SIZE); 20 . = SIZEOF_HEADERS; 21 22 .hash : { *(.hash) } :text 23 .gnu.hash : { *(.gnu.hash) } 24 .dynsym : { *(.dynsym) } 25 .dynstr : { *(.dynstr) } 26 .gnu.version : { *(.gnu.version) } 27 .gnu.version_d : { *(.gnu.version_d) } 28 .gnu.version_r : { *(.gnu.version_r) } 29 30 .note : { *(.note.*) } :text :note 31 32 . = ALIGN(16); 33 .text : { 34 *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*) 35 *(.sfpr .glink) 36 } :text 37 PROVIDE(__etext = .); 38 PROVIDE(_etext = .); 39 PROVIDE(etext = .); 40 41 . = ALIGN(8); 42 VDSO_ftr_fixup_start = .; 43 __ftr_fixup : { *(__ftr_fixup) } 44 VDSO_ftr_fixup_end = .; 45 46 . = ALIGN(8); 47 VDSO_mmu_ftr_fixup_start = .; 48 __mmu_ftr_fixup : { *(__mmu_ftr_fixup) } 49 VDSO_mmu_ftr_fixup_end = .; 50 51 . = ALIGN(8); 52 VDSO_lwsync_fixup_start = .; 53 __lwsync_fixup : { *(__lwsync_fixup) } 54 VDSO_lwsync_fixup_end = .; 55 56 . = ALIGN(8); 57 VDSO_fw_ftr_fixup_start = .; 58 __fw_ftr_fixup : { *(__fw_ftr_fixup) } 59 VDSO_fw_ftr_fixup_end = .; 60 61 /* 62 * Other stuff is appended to the text segment: 63 */ 64 .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } 65 .rodata1 : { *(.rodata1) } 66 67 .dynamic : { *(.dynamic) } :text :dynamic 68 69 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr 70 .eh_frame : { KEEP (*(.eh_frame)) } :text 71 .gcc_except_table : { *(.gcc_except_table) } 72 .rela.dyn ALIGN(8) : { *(.rela.dyn) } 73 74 .got ALIGN(8) : { *(.got .toc) } 75 76 _end = .; 77 PROVIDE(end = .); 78 79 STABS_DEBUG 80 DWARF_DEBUG 81 ELF_DETAILS 82 83 /DISCARD/ : { 84 *(.note.GNU-stack) 85 *(.branch_lt) 86 *(.data .data.* .gnu.linkonce.d.* .sdata*) 87 *(.bss .sbss .dynbss .dynsbss) 88 *(.opd) 89 } 90} 91 92/* 93 * Very old versions of ld do not recognize this name token; use the constant. 94 */ 95#define PT_GNU_EH_FRAME 0x6474e550 96 97/* 98 * We must supply the ELF program headers explicitly to get just one 99 * PT_LOAD segment, and set the flags explicitly to make segments read-only. 100 */ 101PHDRS 102{ 103 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ 104 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ 105 note PT_NOTE FLAGS(4); /* PF_R */ 106 eh_frame_hdr PT_GNU_EH_FRAME; 107} 108 109/* 110 * This controls what symbols we export from the DSO. 111 */ 112VERSION 113{ 114 VDSO_VERSION_STRING { 115 global: 116 __kernel_get_syscall_map; 117 __kernel_gettimeofday; 118 __kernel_clock_gettime; 119 __kernel_clock_getres; 120 __kernel_get_tbfreq; 121 __kernel_sync_dicache; 122 __kernel_sigtramp_rt64; 123 __kernel_getcpu; 124 __kernel_time; 125 126 local: *; 127 }; 128} 129 130/* 131 * Make the sigreturn code visible to the kernel. 132 */ 133VDSO_sigtramp_rt64 = __kernel_start_sigtramp_rt64; 134