Re: [skanduru@earth.siliconrock.com: VMA different from LMA]

[Srinivasa Kanduru <skanduru at linux dot sadhanapath dot com>]

Hi,

I defined a memory region for all the sections as follows:
I assume the address specified in Memory block is LMA and the location counter address would be the VMA. Is that correct ? But in the output, both seem to be in the same address range.

Secondly I am trying to cross-compile the netbsd code for Motorola security processor (mpc875). I used the generic powerpc cpu switch -mcpu=powerpc -mpowerpc to generate a 'hello world' program.

The ELF file is generated successfully, but the program hangs on the evalboard.

I would appreciate any insight into why it hangs.

Thanks,
Srini.

MEMORY
{
	ram (rwx) : org = 0x50000, l = 0x50000
}

SECTIONS {
	. = 0xff030000;
...
(all sections)
...
> ram }

The sections offsets and addresses show up like this.

  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al  [ 0]                   NULL            00000000 000000 000000 00      0   0  0  [ 1] .init             PROGBITS        00050018 000098 000040 00  AX  0   0  4  [ 2] .text             PROGBITS        00050060 0000e0 004b00 00 WAX  0   0 16  [ 3] .fini             PROGBITS        00054b60 004be0 000040 00  AX  0   0  4  [ 4] .rodata           PROGBITS        00054ba0 004c20 000af8 00   A  0   0  8  [ 5] .sdata2           PROGBITS        00055698 005718 000000 00   A  0   0  4  [ 6] .data             PROGBITS        00055698 005718 0005e4 00  WA  0   0  8...
Program Headers:
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  LOAD           0x000080 0x00050000 0x00050000 0x05ce0 0x0807c RWE 0x10
  NOTE           0x000080 0x00050000 0x00050000 0x00018 0x00018 R   0x4


On Tue, Feb 03, 2004 at 03:48:39PM -0500, Ian Lance Taylor wrote:
> Srinivasa Kanduru <skanduru@earth.siliconrock.com> writes:
> 
> > I am using gcc-3.2.2.1 as cross-compiler and binutils-2.13.1-1. How can I
> > specify VMA different from LMA for all sections of an executable in ldscripts ?
> 
> Look for the AT attribute in the manual.
>     http://sources.redhat.com/binutils/docs-2.12/ld.info/Output-Section-LMA.html#Output%20Section%20LMA
> 
> Ian