2 * Linker script for vsyscall DSO. The vsyscall page is an ELF shared
3 * object prelinked to its virtual address, and with only one read-only
4 * segment (that fits in one page). This script controls its layout.
6 #include <asm/asm-offsets.h>
10 . = VDSO_PRELINK + SIZEOF_HEADERS;
12 .hash : { *(.hash) } :text
13 .gnu.hash : { *(.gnu.hash) }
14 .dynsym : { *(.dynsym) }
15 .dynstr : { *(.dynstr) }
16 .gnu.version : { *(.gnu.version) }
17 .gnu.version_d : { *(.gnu.version_d) }
18 .gnu.version_r : { *(.gnu.version_r) }
20 /* This linker script is used both with -r and with -shared.
21 For the layouts to match, we need to skip more than enough
22 space for the dynamic symbol table et al. If this amount
23 is insufficient, ld -shared will barf. Just increase it here. */
24 . = VDSO_PRELINK + 0x400;
26 .text : { *(.text) } :text =0x90909090
27 .note : { *(.note.*) } :text :note
28 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
29 .eh_frame : { KEEP (*(.eh_frame)) } :text
30 .dynamic : { *(.dynamic) } :text :dynamic
33 *(.data .data.* .gnu.linkonce.d.*)
35 *(.bss .bss.* .gnu.linkonce.b.*)
40 * We must supply the ELF program headers explicitly to get just one
41 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
45 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
46 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
47 note PT_NOTE FLAGS(4); /* PF_R */
48 eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
52 * This controls what symbols we export from the DSO.
60 __kernel_rt_sigreturn;
66 /* The ELF entry point can be used to set the AT_SYSINFO value. */
67 ENTRY(__kernel_vsyscall);