On Sat, Jan 19, 2013 at 10:53:26PM +0700, Mulyadi Santosa wrote:
On Sat, Jan 19, 2013 at 12:19 PM, horseriver horseriv...@gmail.com wrote:
hi:
I am linking a .so from one .o file with my specified linker script.
In this linker script file , I do not use SIZEOF_HEADERS,but ld still
report this error :
Not enough room for program headers, try linking with -N
you linker script ... can that be written down here, please? we are
not some sort of mind reader, you know?
Here is the script :
VSYSCALL_BASE = 0xe000;
SECTIONS
{
. = VSYSCALL_BASE ;
.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. */
. = 0x400;
.text : { *(.text) }:text =0x90909090
.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 */
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_2.6 {
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);
Thanks!
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
___
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
