e4ff5b8f54
paravirtualize gate page by allowing each pv_ops instances to define its own gate page. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
110 lines
2.7 KiB
ArmAsm
110 lines
2.7 KiB
ArmAsm
/*
|
|
* Linker script for gate DSO. The gate pages are an ELF shared object
|
|
* prelinked to its virtual address, with only one read-only segment and
|
|
* one execute-only segment (both fit in one page). This script controls
|
|
* its layout.
|
|
*/
|
|
|
|
|
|
#include <asm/system.h>
|
|
#include "paravirt_patchlist.h"
|
|
|
|
SECTIONS
|
|
{
|
|
. = GATE_ADDR + SIZEOF_HEADERS;
|
|
|
|
.hash : { *(.hash) } :readable
|
|
.gnu.hash : { *(.gnu.hash) }
|
|
.dynsym : { *(.dynsym) }
|
|
.dynstr : { *(.dynstr) }
|
|
.gnu.version : { *(.gnu.version) }
|
|
.gnu.version_d : { *(.gnu.version_d) }
|
|
.gnu.version_r : { *(.gnu.version_r) }
|
|
|
|
.note : { *(.note*) } :readable :note
|
|
|
|
.dynamic : { *(.dynamic) } :readable :dynamic
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
. = GATE_ADDR + 0x600;
|
|
|
|
.data.patch : {
|
|
__paravirt_start_gate_mckinley_e9_patchlist = .;
|
|
*(.data.patch.mckinley_e9)
|
|
__paravirt_end_gate_mckinley_e9_patchlist = .;
|
|
|
|
__paravirt_start_gate_vtop_patchlist = .;
|
|
*(.data.patch.vtop)
|
|
__paravirt_end_gate_vtop_patchlist = .;
|
|
|
|
__paravirt_start_gate_fsyscall_patchlist = .;
|
|
*(.data.patch.fsyscall_table)
|
|
__paravirt_end_gate_fsyscall_patchlist = .;
|
|
|
|
__paravirt_start_gate_brl_fsys_bubble_down_patchlist = .;
|
|
*(.data.patch.brl_fsys_bubble_down)
|
|
__paravirt_end_gate_brl_fsys_bubble_down_patchlist = .;
|
|
} :readable
|
|
|
|
.IA_64.unwind_info : { *(.IA_64.unwind_info*) }
|
|
.IA_64.unwind : { *(.IA_64.unwind*) } :readable :unwind
|
|
#ifdef HAVE_BUGGY_SEGREL
|
|
.text (GATE_ADDR + PAGE_SIZE) : { *(.text) *(.text.*) } :readable
|
|
#else
|
|
. = ALIGN(PERCPU_PAGE_SIZE) + (. & (PERCPU_PAGE_SIZE - 1));
|
|
.text : { *(.text) *(.text.*) } :epc
|
|
#endif
|
|
|
|
/DISCARD/ : {
|
|
*(.got.plt) *(.got)
|
|
*(.data .data.* .gnu.linkonce.d.*)
|
|
*(.dynbss)
|
|
*(.bss .bss.* .gnu.linkonce.b.*)
|
|
*(__ex_table)
|
|
*(__mca_table)
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ld does not recognize this name token; use the constant.
|
|
*/
|
|
#define PT_IA_64_UNWIND 0x70000001
|
|
|
|
/*
|
|
* 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
|
|
{
|
|
readable PT_LOAD FILEHDR PHDRS FLAGS(4); /* PF_R */
|
|
#ifndef HAVE_BUGGY_SEGREL
|
|
epc PT_LOAD FILEHDR PHDRS FLAGS(1); /* PF_X */
|
|
#endif
|
|
dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
|
|
note PT_NOTE FLAGS(4); /* PF_R */
|
|
unwind PT_IA_64_UNWIND;
|
|
}
|
|
|
|
/*
|
|
* This controls what symbols we export from the DSO.
|
|
*/
|
|
VERSION
|
|
{
|
|
LINUX_2.5 {
|
|
global:
|
|
__kernel_syscall_via_break;
|
|
__kernel_syscall_via_epc;
|
|
__kernel_sigtramp;
|
|
|
|
local: *;
|
|
};
|
|
}
|
|
|
|
/* The ELF entry point can be used to set the AT_SYSINFO value. */
|
|
ENTRY(__kernel_syscall_via_epc)
|