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/*
* This file contains directives for the GNU linker that are specific
* to the MBX860-2 board.
*
* $Id$
*/
OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
OUTPUT_ARCH(powerpc)
ENTRY(start)
/*
* Declare some sizes.
* XXX: The assignment of ". += XyzSize;" fails in older gld's if the
* number used there is not constant. If this happens to you, edit
* the lines marked XXX below to use a constant value.
*/
HeapSize = DEFINED(HeapSize) ? HeapSize : 0x100000; /* 1M Heap */
StackSize = DEFINED(StackSize) ? StackSize : 0x1000;
MEMORY
{
ram : org = 0x0, l = 4M
nvram : org = 0xfa000000, l = 32K
dpram : org = 0xfa200000, l = 16K
flash : org = 0xfc000000, l = 2M
immr : org = 0xfa200000, l = 16K
}
SECTIONS
{
/*
* If the vectors are specified statically rather than created at run time,
* accumulate them starting at VMA 0x0.
*/
.vectors :
{
*(.vectors)
} >ram
/*
* The stack will live in this area - between the vectors and
* the text section.
*/
.text 0x10000:
{
/* Read-only sections, merged into text segment: */
text.start = .;
/* Entry point is the .entry section */
*(.entry)
*(.entry2)
/* Actual code */
*(.text)
*(.text.*)
/* C++ constructors/destructors */
*(.gnu.linkonce.t*)
/* Initialization and finalization code.
*
* Various files can provide initialization and finalization functions.
* The bodies of these functions are in .init and .fini sections. We
* accumulate the bodies here, and prepend function prologues from
* ecrti.o and function epilogues from ecrtn.o. ecrti.o must be linked
* first; ecrtn.o must be linked last. Because these are wildcards, it
* doesn't matter if the user does not actually link against ecrti.o and
* ecrtn.o; the linker won't look for a file to match a wildcard. The
* wildcard also means that it doesn't matter which directory ecrti.o
* and ecrtn.o are in.
*/
PROVIDE (_init = .);
*ecrti.o(.init)
*(.init)
*ecrtn.o(.init)
PROVIDE (_fini = .);
*ecrti.o(.fini)
*(.fini)
*ecrtn.o(.init)
/*
* C++ constructors and destructors for static objects.
* PowerPC EABI does not use crtstuff yet, so we build "old-style"
* constructor and destructor lists that begin with the list lenght
* end terminate with a NULL entry.
*/
PROVIDE (__CTOR_LIST__ = .);
/* LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) */
*crtbegin.o(.ctors)
*(.ctors)
*crtend.o(.ctors)
LONG(0)
PROVIDE (__CTOR_END__ = .);
PROVIDE (__DTOR_LIST__ = .);
/* LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2) */
*crtbegin.o(.dtors)
*(.dtors)
*crtend.o(.dtors)
LONG(0)
PROVIDE (__DTOR_END__ = .);
/* Exception frame info */
*(.eh_frame)
/* Miscellaneous read-only data */
_rodata_start = . ;
*(.gnu.linkonce.r*)
*(.lit)
*(.shdata)
*(.rodata)
*(.rodata1)
*(.descriptors)
*(rom_ver)
_erodata = .;
/* Various possible names for the end of the .text section */
etext = ALIGN(0x10);
_etext = .;
_endtext = .;
text.end = .;
PROVIDE (etext = .);
PROVIDE (__etext = .);
} > ram
/* R/W Data */
.data :
{
data_start = .;
*(.data)
*(.data.*)
*(.data1)
PROVIDE (__SDATA_START__ = .);
*(.sdata)
*(.gnu.linkonce.d*)
PROVIDE (__SDATA_END__ = .);
PROVIDE (__EXCEPT_START__ = .);
*(.gcc_except_table)
PROVIDE (__EXCEPT_END__ = .);
PROVIDE(__GOT_START__ = .);
*(.got.plt)
*(.got)
PROVIDE(__GOT_END__ = .);
*(.got1)
PROVIDE (__GOT2_START__ = .);
PROVIDE (_GOT2_START_ = .);
*(.got2)
PROVIDE (__GOT2_END__ = .);
PROVIDE (_GOT2_END_ = .);
PROVIDE (__FIXUP_START__ = .);
PROVIDE (_FIXUP_START_ = .);
*(.fixup)
PROVIDE (_FIXUP_END_ = .);
PROVIDE (__FIXUP_END__ = .);
/* We want the small data sections together, so single-instruction offsets
* can access them all.
*/
PROVIDE (__SDATA2_START__ = .);
*(.sdata2)
PROVIDE (__SDATA2_END__ = .);
} > ram
.bss :
{
PROVIDE (__SBSS_START__ = .);
PROVIDE (__SBSS2_START__ = .);
*(.sbss2)
PROVIDE (__SBSS2_END__ = .);
bss.start = .;
*(.bss)
*(.sbss)
*(COMMON)
. = ALIGN(4);
bss.end = .;
PROVIDE (__SBSS_END__ = .);
} > ram
bss.size = bss.end - bss.start;
text.size = text.end - text.start;
PROVIDE(_end = bss.end);
_HeapStart = .;
__HeapStart = .;
. += HeapSize; /* XXX -- Old gld can't handle this */
/* . += 0x80000; */ /* HeapSize for old gld */
_HeapEnd = .;
__HeapEnd = .;
clear_end = .;
_WorkspaceBase = .;
__WorkspaceBase = .;
dpram :
{
m8xx = .;
_m8xx = .;
. += (16 * 1024);
} >immr
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* These must appear regardless of . */
}
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