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.
7 /* This must match <asm/fixmap.h>. */
8 VSYSCALL_BASE = 0xffffe000;
12 . = VSYSCALL_BASE + SIZEOF_HEADERS;
14 .hash : { *(.hash) } :text
15 .dynsym : { *(.dynsym) }
16 .dynstr : { *(.dynstr) }
17 .gnu.version : { *(.gnu.version) }
18 .gnu.version_d : { *(.gnu.version_d) }
19 .gnu.version_r : { *(.gnu.version_r) }
21 /* This linker script is used both with -r and with -shared.
22 For the layouts to match, we need to skip more than enough
23 space for the dynamic symbol table et al. If this amount
24 is insufficient, ld -shared will barf. Just increase it here. */
25 . = VSYSCALL_BASE + 0x400;
27 .text : { *(.text) } :text =0x90909090
29 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
30 .eh_frame : { KEEP (*(.eh_frame)) } :text
31 .dynamic : { *(.dynamic) } :text :dynamic
34 *(.data .data.* .gnu.linkonce.d.*)
36 *(.bss .bss.* .gnu.linkonce.b.*)
41 * We must supply the ELF program headers explicitly to get just one
42 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
46 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
47 dynamic PT_DYNAMIC 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);