From: Yunfeng ZHANG <zyf.zeroos@gmail.com>
To: Alexandre Oliva <aoliva@redhat.com>
Cc: Richard Henderson <rth@redhat.com>,
gcc@gcc.gnu.org, Andrew Haley <aph@redhat.com>
Subject: Re: No .got section in ELF
Date: Mon, 30 Nov 2009 11:10:00 -0000 [thread overview]
Message-ID: <4df04b840911292327g3cbe6146o2fdeac8e19e83125@mail.gmail.com> (raw)
In-Reply-To: <or8wdsf5u7.fsf@livre.localdomain>
Thank you! I've known to how to create a *compat* PIC library, firstly using
`-fvisibility=hidden' in compile command line to hidden all symbols, then
using `objcopy -R' to remove .got section totally! However, assemble result is
just like this
call __i686.get_pc_thunk.bx
addl $_GLOBAL_OFFSET_TABLE_, %ebx // << A.
...
movl %eax, g@GOTOFF(%ebx) // << B.
It seems gcc should do better since both A and B are const, so it's safe to
remove line A as my idea shows.
next prev parent reply other threads:[~2009-11-30 7:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-24 1:58 yunfeng zhang
2009-11-24 10:00 ` Andrew Haley
2009-11-24 17:10 ` Richard Henderson
2009-11-26 2:24 ` yunfeng zhang
2009-11-26 3:11 ` Richard Henderson
2009-11-26 6:04 ` yunfeng zhang
2009-11-26 7:55 ` Alexandre Oliva
2009-11-27 2:18 ` yunfeng zhang
2009-11-27 4:12 ` Dave Korn
2009-11-27 4:43 ` yunfeng zhang
2009-11-27 4:46 ` Dave Korn
2009-11-27 13:35 ` Alexandre Oliva
2009-11-30 11:10 ` Yunfeng ZHANG [this message]
2009-11-27 4:58 ` Jie Zhang
2009-11-27 6:42 ` yunfeng zhang
2009-11-27 14:16 ` Ian Lance Taylor
2009-11-27 4:51 Dmitry Gorbachev
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