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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/x86_64/ia32/vsyscall.lds
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/x86_64/ia32/vsyscall.lds')
-rw-r--r--arch/x86_64/ia32/vsyscall.lds77
1 files changed, 77 insertions, 0 deletions
diff --git a/arch/x86_64/ia32/vsyscall.lds b/arch/x86_64/ia32/vsyscall.lds
new file mode 100644
index 000000000000..fa4b4dd4a9ff
--- /dev/null
+++ b/arch/x86_64/ia32/vsyscall.lds
@@ -0,0 +1,77 @@
1/*
2 * Linker script for vsyscall DSO. The vsyscall page is an ELF shared
3 * object prelinked to its virtual address. This script controls its layout.
4 */
5
6/* This must match <asm/fixmap.h>. */
7VSYSCALL_BASE = 0xffffe000;
8
9SECTIONS
10{
11 . = VSYSCALL_BASE + SIZEOF_HEADERS;
12
13 .hash : { *(.hash) } :text
14 .dynsym : { *(.dynsym) }
15 .dynstr : { *(.dynstr) }
16 .gnu.version : { *(.gnu.version) }
17 .gnu.version_d : { *(.gnu.version_d) }
18 .gnu.version_r : { *(.gnu.version_r) }
19
20 /* This linker script is used both with -r and with -shared.
21 For the layouts to match, we need to skip more than enough
22 space for the dynamic symbol table et al. If this amount
23 is insufficient, ld -shared will barf. Just increase it here. */
24 . = VSYSCALL_BASE + 0x400;
25
26 .text.vsyscall : { *(.text.vsyscall) } :text =0x90909090
27
28 /* This is an 32bit object and we cannot easily get the offsets
29 into the 64bit kernel. Just hardcode them here. This assumes
30 that all the stubs don't need more than 0x100 bytes. */
31 . = VSYSCALL_BASE + 0x500;
32
33 .text.sigreturn : { *(.text.sigreturn) } :text =0x90909090
34
35 . = VSYSCALL_BASE + 0x600;
36
37 .text.rtsigreturn : { *(.text.rtsigreturn) } :text =0x90909090
38
39 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
40 .eh_frame : { KEEP (*(.eh_frame)) } :text
41 .dynamic : { *(.dynamic) } :text :dynamic
42 .useless : {
43 *(.got.plt) *(.got)
44 *(.data .data.* .gnu.linkonce.d.*)
45 *(.dynbss)
46 *(.bss .bss.* .gnu.linkonce.b.*)
47 } :text
48}
49
50/*
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.
53 */
54PHDRS
55{
56 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
57 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
58 eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
59}
60
61/*
62 * This controls what symbols we export from the DSO.
63 */
64VERSION
65{
66 LINUX_2.5 {
67 global:
68 __kernel_vsyscall;
69 __kernel_sigreturn;
70 __kernel_rt_sigreturn;
71
72 local: *;
73 };
74}
75
76/* The ELF entry point can be used to set the AT_SYSINFO value. */
77ENTRY(__kernel_vsyscall);