mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 01:30:54 +07:00
c60c390620
The addition of the PT_NOTE didn't take in the x86_64 version of the i386 vDSO, because I forgot the linker script bit in that copy. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
80 lines
2.2 KiB
Plaintext
80 lines
2.2 KiB
Plaintext
/*
|
|
* Linker script for vsyscall DSO. The vsyscall page is an ELF shared
|
|
* object prelinked to its virtual address. This script controls its layout.
|
|
*/
|
|
|
|
/* This must match <asm/fixmap.h>. */
|
|
VSYSCALL_BASE = 0xffffe000;
|
|
|
|
SECTIONS
|
|
{
|
|
. = VSYSCALL_BASE + SIZEOF_HEADERS;
|
|
|
|
.hash : { *(.hash) } :text
|
|
.dynsym : { *(.dynsym) }
|
|
.dynstr : { *(.dynstr) }
|
|
.gnu.version : { *(.gnu.version) }
|
|
.gnu.version_d : { *(.gnu.version_d) }
|
|
.gnu.version_r : { *(.gnu.version_r) }
|
|
|
|
/* This linker script is used both with -r and with -shared.
|
|
For the layouts to match, we need to skip more than enough
|
|
space for the dynamic symbol table et al. If this amount
|
|
is insufficient, ld -shared will barf. Just increase it here. */
|
|
. = VSYSCALL_BASE + 0x400;
|
|
|
|
.text.vsyscall : { *(.text.vsyscall) } :text =0x90909090
|
|
|
|
/* This is an 32bit object and we cannot easily get the offsets
|
|
into the 64bit kernel. Just hardcode them here. This assumes
|
|
that all the stubs don't need more than 0x100 bytes. */
|
|
. = VSYSCALL_BASE + 0x500;
|
|
|
|
.text.sigreturn : { *(.text.sigreturn) } :text =0x90909090
|
|
|
|
. = VSYSCALL_BASE + 0x600;
|
|
|
|
.text.rtsigreturn : { *(.text.rtsigreturn) } :text =0x90909090
|
|
|
|
.note : { *(.note.*) } :text :note
|
|
.eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
|
|
.eh_frame : { KEEP (*(.eh_frame)) } :text
|
|
.dynamic : { *(.dynamic) } :text :dynamic
|
|
.useless : {
|
|
*(.got.plt) *(.got)
|
|
*(.data .data.* .gnu.linkonce.d.*)
|
|
*(.dynbss)
|
|
*(.bss .bss.* .gnu.linkonce.b.*)
|
|
} :text
|
|
}
|
|
|
|
/*
|
|
* We must supply the ELF program headers explicitly to get just one
|
|
* PT_LOAD segment, and set the flags explicitly to make segments read-only.
|
|
*/
|
|
PHDRS
|
|
{
|
|
text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
|
|
dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
|
|
note PT_NOTE FLAGS(4); /* PF_R */
|
|
eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
|
|
}
|
|
|
|
/*
|
|
* This controls what symbols we export from the DSO.
|
|
*/
|
|
VERSION
|
|
{
|
|
LINUX_2.5 {
|
|
global:
|
|
__kernel_vsyscall;
|
|
__kernel_sigreturn;
|
|
__kernel_rt_sigreturn;
|
|
|
|
local: *;
|
|
};
|
|
}
|
|
|
|
/* The ELF entry point can be used to set the AT_SYSINFO value. */
|
|
ENTRY(__kernel_vsyscall);
|