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Re: Wrong string address
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Halip Ilie <lupuroshu at yahoo dot com>
- Cc: binutils at sourceware dot org
- Date: Sun, 15 Nov 2009 08:13:25 -0800
- Subject: Re: Wrong string address
- References: <783508.52558.qm@web33705.mail.mud.yahoo.com>
On Sat, Nov 14, 2009 at 11:06 PM, Halip Ilie <lupuroshu@yahoo.com> wrote:
> Hello. I'm trying to compile geezer's OS dev examples (http://files.osdev.org/mirrors/geezer/osd/code/osd.zip), with gcc 4.4.2 and binutils 2.20, both compiled with Cygwin and targetting i586-elf (--target=i586-elf), on a Win XP SP3.
>
> The problem is that in the resulting binary, the addresses of strings are wrong. Here's what I mean (in the first example, it only prints 2 strings on the screen, memcpy is used to copy bytes in the video memory):
> ?10011a: ? ?6a 20 ? ? ? ? ? ? ? ? ? ?push ? $0x20
> ?10011c: ? ?68 60 81 04 08 ? ? ? ? ? push ? $0x8048160
> ?100121: ? ?ff 75 fc ? ? ? ? ? ? ? ? pushl ?-0x4(%ebp)
> ?100124: ? ?e8 6a ff ff ff ? ? ? ? ? call ? 100093 <memcpy>
> // .......
> ?10012e: ? ?68 a0 81 04 08 ? ? ? ? ? push ? $0x80481a0
> //........
> ?10013b: ? ?50 ? ? ? ? ? ? ? ? ? ? ? push ? %eax
> ?10013c: ? ?e8 52 ff ff ff ? ? ? ? ? call ? 100093 <memcpy>
> These two: 0x8048160 and 0x80481a0 should be the addresses of two strings. But the correct addresses are actually at 0x100160 and 0x1001a0. With MinGW, the output is correct, and tried cross-compiling it's binutils-src package, with the same result.
>
Please open a bug report with a testcase.
Thanks.
--
H.J.