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) 16ENTRY(_start) 17 18SECTIONS 19{ 20 PROVIDE(_vdso_datapage = . - 2 * PAGE_SIZE); 21 . = SIZEOF_HEADERS; 22 23 .hash : { *(.hash) } :text 24 .gnu.hash : { *(.gnu.hash) } 25 .dynsym : { *(.dynsym) } 26 .dynstr : { *(.dynstr) } 27 .gnu.version : { *(.gnu.version) } 28 .gnu.version_d : { *(.gnu.version_d) } 29 .gnu.version_r : { *(.gnu.version_r) } 30 31 .note : { *(.note.*) } :text :note 32 33 . = ALIGN(16); 34 .text : { 35 *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*) 36 *(.sfpr .glink) 37 } :text 38 PROVIDE(__etext = .); 39 PROVIDE(_etext = .); 40 PROVIDE(etext = .); 41 42 . = ALIGN(8); 43 VDSO_ftr_fixup_start = .; 44 __ftr_fixup : { *(__ftr_fixup) } 45 VDSO_ftr_fixup_end = .; 46 47 . = ALIGN(8); 48 VDSO_mmu_ftr_fixup_start = .; 49 __mmu_ftr_fixup : { *(__mmu_ftr_fixup) } 50 VDSO_mmu_ftr_fixup_end = .; 51 52 . = ALIGN(8); 53 VDSO_lwsync_fixup_start = .; 54 __lwsync_fixup : { *(__lwsync_fixup) } 55 VDSO_lwsync_fixup_end = .; 56 57 . = ALIGN(8); 58 VDSO_fw_ftr_fixup_start = .; 59 __fw_ftr_fixup : { *(__fw_ftr_fixup) } 60 VDSO_fw_ftr_fixup_end = .; 61 62 /* 63 * Other stuff is appended to the text segment: 64 */ 65 .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } 66 .rodata1 : { *(.rodata1) } 67 68 .dynamic : { *(.dynamic) } :text :dynamic 69 70 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr 71 .eh_frame : { KEEP (*(.eh_frame)) } :text 72 .gcc_except_table : { *(.gcc_except_table) } 73 .rela.dyn ALIGN(8) : { *(.rela.dyn) } 74 75 .got ALIGN(8) : { *(.got .toc) } 76 77 _end = .; 78 PROVIDE(end = .); 79 80 STABS_DEBUG 81 DWARF_DEBUG 82 ELF_DETAILS 83 84 /DISCARD/ : { 85 *(.note.GNU-stack) 86 *(.branch_lt) 87 *(.data .data.* .gnu.linkonce.d.* .sdata*) 88 *(.bss .sbss .dynbss .dynsbss) 89 *(.opd) 90 } 91} 92 93/* 94 * Very old versions of ld do not recognize this name token; use the constant. 95 */ 96#define PT_GNU_EH_FRAME 0x6474e550 97 98/* 99 * We must supply the ELF program headers explicitly to get just one 100 * PT_LOAD segment, and set the flags explicitly to make segments read-only. 101 */ 102PHDRS 103{ 104 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ 105 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ 106 note PT_NOTE FLAGS(4); /* PF_R */ 107 eh_frame_hdr PT_GNU_EH_FRAME; 108} 109 110/* 111 * This controls what symbols we export from the DSO. 112 */ 113VERSION 114{ 115 VDSO_VERSION_STRING { 116 global: 117 __kernel_get_syscall_map; 118 __kernel_gettimeofday; 119 __kernel_clock_gettime; 120 __kernel_clock_getres; 121 __kernel_get_tbfreq; 122 __kernel_sync_dicache; 123 __kernel_sigtramp_rt64; 124 __kernel_getcpu; 125 __kernel_time; 126 127 local: *; 128 }; 129} 130 131/* 132 * Make the sigreturn code visible to the kernel. 133 */ 134VDSO_sigtramp_rt64 = __kernel_start_sigtramp_rt64; 135