On Sat, Jan 19, 2013 at 10:53:26PM +0700, Mulyadi Santosa wrote:

On Sat, Jan 19, 2013 at 12:19 PM, horseriver <horserivers@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 = 0xffffe000; 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