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/*
* This file contains directives for the GNU linker which are specific
* to the Technologic Systems TS-1325 (i386ex) board.
*
* Copyright (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*
* Memory layout:
*
* 0x0008000 -> ... : initial section ( init 386ex, goto protected mode)
* ... -> ... : text section ( executable code )
* ... -> 0x00A0000 : data section ( initialized storage )
* 0x0100000 -> 0x0200000 : bss section, stack space, heap storage
*/
ENTRY(_init_i386ex) ;
SECTIONS
{
/***************************************************************************
* initial section:
*
* This section is the first in memory, preceding the text and data sections.
* It initializes the i386ex, sets up the gdt in RAM, loads the gdt,
* jumps to protected mode, loads the idt, zeros the bss section, sets up
* the stack and calls the rest of the RTEMS initialization.
***************************************************************************/
_DOS_ld_addr = 0x0008000 ;
.initial _DOS_ld_addr :
{
*(.initial);
}
/***************************************************************************
* text section:
*
* Nobody here but us opcodes.
***************************************************************************/
.text BLOCK(0x10) :
{
CREATE_OBJECT_SYMBOLS
text_start = . ;
_text_start = . ;
*(.text ) ;
. = ALIGN (16);
*(.eh_fram)
. = ALIGN (16);
/*
* C++ constructors
*/
__CTOR_LIST__ = .;
LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
*(.ctors)
LONG(0)
__CTOR_END__ = .;
. = ALIGN (4) ;
__DTOR_LIST__ = .;
LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
*(.dtors)
LONG(0)
__DTOR_END__ = .;
_rodata_start = . ;
*(.rodata)
*(.gnu.linkonce.r*)
_erodata = ALIGN( 0x10 ) ;
_etext = ALIGN( 0x10 );
_endtext = . ;
}
/***************************************************************************
* data section:
*
* This section defines the location of the data section in RAM.
***************************************************************************/
.data BLOCK(0x10) :
{
_sdata = .;
*(.data);
_edata = .;
}
_data_size = _edata - _sdata ;
/***************************************************************************
* bss section:
*
* The bss section is the first section in extended RAM ( > 1MB).
***************************************************************************/
.bss 0x100000 (NOLOAD) :
{
_bss_start = .;
*(.bss);
*(COMMON);
_ebss = ALIGN(0x10);
}
_bss_size = _ebss - _bss_start ;
/***************************************************************************
* General variables:
*
* The stack_size variable is customizable here. The heap is located directly
* after the stack in RAM. A routine within bspstart.c uses these variables
* to ensure that the heap used by RTEMS is as large as the RAM remaining
* after all workspace configurations are complete.
***************************************************************************/
stack_size = 0x8000 ;
stack_origin = _ebss + stack_size ;
heap_bottom = stack_origin + 4 ;
}
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