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>
8 #ifdef CONFIG_CPU_LITTLE_ENDIAN
9 OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
11 OUTPUT_FORMAT("elf32-shbig-linux", "elf32-shbig-linux", "elf32-shbig-linux")
15 /* The ELF entry point can be used to set the AT_SYSINFO value. */
16 ENTRY(__kernel_vsyscall);
22 .hash : { *(.hash) } :text
23 .gnu.hash : { *(.gnu.hash) }
24 .dynsym : { *(.dynsym) }
25 .dynstr : { *(.dynstr) }
26 .gnu.version : { *(.gnu.version) }
27 .gnu.version_d : { *(.gnu.version_d) }
28 .gnu.version_r : { *(.gnu.version_r) }
31 * This linker script is used both with -r and with -shared.
32 * For the layouts to match, we need to skip more than enough
33 * space for the dynamic symbol table et al. If this amount
34 * is insufficient, ld -shared will barf. Just increase it here.
38 .text : { *(.text) } :text =0x90909090
39 .note : { *(.note.*) } :text :note
40 .eh_frame_hdr : { *(.eh_frame_hdr ) } :text :eh_frame_hdr
45 .dynamic : { *(.dynamic) } :text :dynamic
48 *(.data .data.* .gnu.linkonce.d.*)
50 *(.bss .bss.* .gnu.linkonce.b.*)
55 * Very old versions of ld do not recognize this name token; use the constant.
57 #define PT_GNU_EH_FRAME 0x6474e550
60 * We must supply the ELF program headers explicitly to get just one
61 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
65 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
66 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
67 note PT_NOTE FLAGS(4); /* PF_R */
68 eh_frame_hdr PT_GNU_EH_FRAME;
72 * This controls what symbols we export from the DSO.
80 __kernel_rt_sigreturn;