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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/i386/kernel/vsyscall.lds.S
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/i386/kernel/vsyscall.lds.S')
-rw-r--r--arch/i386/kernel/vsyscall.lds.S65
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/i386/kernel/vsyscall.lds.S b/arch/i386/kernel/vsyscall.lds.S
new file mode 100644
index 000000000000..3a8329d6536e
--- /dev/null
+++ b/arch/i386/kernel/vsyscall.lds.S
@@ -0,0 +1,65 @@
1/*
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.
5 */
6#include <asm/asm_offsets.h>
7
8SECTIONS
9{
10 . = VSYSCALL_BASE + SIZEOF_HEADERS;
11
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) }
18
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;
24
25 .text : { *(.text) } :text =0x90909090
26
27 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
28 .eh_frame : { KEEP (*(.eh_frame)) } :text
29 .dynamic : { *(.dynamic) } :text :dynamic
30 .useless : {
31 *(.got.plt) *(.got)
32 *(.data .data.* .gnu.linkonce.d.*)
33 *(.dynbss)
34 *(.bss .bss.* .gnu.linkonce.b.*)
35 } :text
36}
37
38/*
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.
41 */
42PHDRS
43{
44 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
45 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
46 eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
47}
48
49/*
50 * This controls what symbols we export from the DSO.
51 */
52VERSION
53{
54 LINUX_2.5 {
55 global:
56 __kernel_vsyscall;
57 __kernel_sigreturn;
58 __kernel_rt_sigreturn;
59
60 local: *;
61 };
62}
63
64/* The ELF entry point can be used to set the AT_SYSINFO value. */
65ENTRY(__kernel_vsyscall);