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>
9 #define VDSO_PRELINK 0xffffffffff700000
13 . = VDSO_PRELINK + SIZEOF_HEADERS;
15 .hash : { *(.hash) } :text
16 .gnu.hash : { *(.gnu.hash) }
17 .dynsym : { *(.dynsym) }
18 .dynstr : { *(.dynstr) }
19 .gnu.version : { *(.gnu.version) }
20 .gnu.version_d : { *(.gnu.version_d) }
21 .gnu.version_r : { *(.gnu.version_r) }
23 /* This linker script is used both with -r and with -shared.
24 For the layouts to match, we need to skip more than enough
25 space for the dynamic symbol table et al. If this amount
26 is insufficient, ld -shared will barf. Just increase it here. */
27 . = VDSO_PRELINK + VDSO_TEXT_OFFSET;
29 .text : { *(.text) } :text
30 .text.ptr : { *(.text.ptr) } :text
31 . = VDSO_PRELINK + 0x900;
32 .data : { *(.data) } :text
33 .bss : { *(.bss) } :text
35 .altinstructions : { *(.altinstructions) } :text
36 .altinstr_replacement : { *(.altinstr_replacement) } :text
38 .note : { *(.note.*) } :text :note
39 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
40 .eh_frame : { KEEP (*(.eh_frame)) } :text
41 .dynamic : { *(.dynamic) } :text :dynamic
51 * We must supply the ELF program headers explicitly to get just one
52 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
56 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
57 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
58 note PT_NOTE FLAGS(4); /* PF_R */
59 eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
63 * This controls what symbols we export from the DSO.