ld x86-64 bug

[Jan Stoess]

Hi,
compiled for an x86_64 target and using the ld places sections on a
wrong offset within the file:

My ld:
 GNU ld version 2.13.2 built for the target x86_64-pc-linux-gnu

My gcc: 
 Reading specs from /usr/local/cross/lib/gcc-lib/x86_64-pc-linux-gnu/\
 3.2.1/specs
 Configured with: ../gcc-3.2.1/configure --target=x86_64-pc-linux-gnu\
 --prefix=/usr/local/cross --enable-languages=c,c++ --enable-threads=\
 posix --disable-multilib
 Thread model: posix
 gcc version 3.2.1

My Host:
 Linux 2.4.20-pre8-ac1 GNU/Linux


<-------------------The Linker Script ldbug.lds--------------------->

OUTPUT_FORMAT("elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)

#This should toggle LMA and VMA in the ELF file but NOT the 
#offset within the FILE!

start_text = 0x123456;

SECTIONS
{       
        .text start_text : AT (start_text)
        {
                *(.text)
        }
        
}

<-------------------Dummy C Source ldbug.c -------------------------->
int main(void)
{

  return 0;
}

<----------------------------Compile it --------------------------->

$x86_64-pc-linux-gnu-gcc -o ldbug.o ldbug.c
$x86_64-pc-linux-gnu-ld -T ldbug.lds  ldbug.o -o ldbug

<----------------------------Inspect it --------------------------->
$x86_64-pc-linux-gnu-objdump -dhx ldbug | less
[...]
Sections:
Idx Name          Size      VMA               LMA               File off  Algn
  0 .text         00000192  0000000000123456  0000000000123456  00023456  2**6
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .init         00000013  00000000001235e8  00000000001235e8  000235e8  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  2 .plt          00000020  00000000001235fc  00000000001235fc  000235fc  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  3 .fini         0000000e  000000000012361c  000000000012361c  0002361c  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE

[...]

Looking at the 6th column, the file offset of the text section is
equal to the maximum of the LMA of text section (Column 5) and
0x100000; i tried several values for start_text in the Linker Script.
This makes the file unnecessarily big...
 
I attached the object file, the binary and a Makefile for your
convenience

yours,
jan stoess

ldbug.tgz
Description: Binary data

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