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 . = VSYSCALL_BASE + SIZEOF_HEADERS;
12 .hash : { *(.hash) } :text
13 .dynsym : { *(.dynsym) }
14 .dynstr : { *(.dynstr) }
15 .gnu.version : { *(.gnu.version) }
16 .gnu.version_d : { *(.gnu.version_d) }
17 .gnu.version_r : { *(.gnu.version_r) }
19 /* This linker script is used both with -r and with -shared.
20 For the layouts to match, we need to skip more than enough
21 space for the dynamic symbol table et al. If this amount
22 is insufficient, ld -shared will barf. Just increase it here. */
23 . = VSYSCALL_BASE + 0x400;
25 .text : { *(.text) } :text =0x90909090
26 .note : { *(.note.*) } :text :note
27 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
28 .eh_frame : { KEEP (*(.eh_frame)) } :text
29 .dynamic : { *(.dynamic) } :text :dynamic
32 *(.data .data.* .gnu.linkonce.d.*)
34 *(.bss .bss.* .gnu.linkonce.b.*)
39 * We must supply the ELF program headers explicitly to get just one
40 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
44 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
45 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
46 note PT_NOTE FLAGS(4); /* PF_R */
47 eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
51 * This controls what symbols we export from the DSO.
59 __kernel_rt_sigreturn;
65 /* The ELF entry point can be used to set the AT_SYSINFO value. */
66 ENTRY(__kernel_vsyscall);