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/* Linker script for 68HC11 executable (PROM). */
ENTRY(_start)
OUTPUT_FORMAT("elf32-m68hc11", "elf32-m68hc11", "elf32-m68hc11")
OUTPUT_ARCH(m68hc11)
GROUP(-lc -lbcc -lgcc)
SEARCH_DIR(.);
/* Fixed definition of the available memory banks.
See generic emulation script for a user defined configuration. */
/* The memory layout below is suitable for gcc validation.
It takes care of big programs allowing up to 48128 bytes
of text while allowing some programs that consume some
memory (comp-goto-1 requires the RAM to be set to 0x4400
to avoid head<->stack collision in malloc/sbrk). */
MEMORY
{
page0 (rwx) : ORIGIN = 0x00, LENGTH = 256
text (rx) : ORIGIN = 0x04400, LENGTH = 0x10000 - 0x4400
data : ORIGIN = 0x01100, LENGTH = 0x2000 - 0x1100
}
/* Setup the stack on the top of the data memory bank. */
PROVIDE (_stack = 0x04400 - 1);
SECTIONS
{
.hash : { *(.hash) }
.dynsym : { *(.dynsym) }
.dynstr : { *(.dynstr) }
.gnu.version : { *(.gnu.version) }
.gnu.version_d : { *(.gnu.version_d) }
.gnu.version_r : { *(.gnu.version_r) }
.rel.text :
{
*(.rel.text)
*(.rel.text.*)
*(.rel.gnu.linkonce.t.*)
}
.rela.text :
{
*(.rela.text)
*(.rela.text.*)
*(.rela.gnu.linkonce.t.*)
}
.rel.data :
{
*(.rel.data)
*(.rel.data.*)
*(.rel.gnu.linkonce.d.*)
}
.rela.data :
{
*(.rela.data)
*(.rela.data.*)
*(.rela.gnu.linkonce.d.*)
}
.rel.rodata :
{
*(.rel.rodata)
*(.rel.rodata.*)
*(.rel.gnu.linkonce.r.*)
}
.rela.rodata :
{
*(.rela.rodata)
*(.rela.rodata.*)
*(.rela.gnu.linkonce.r.*)
}
.rel.sdata :
{
*(.rel.sdata)
*(.rel.sdata.*)
*(.rel.gnu.linkonce.s.*)
}
.rela.sdata :
{
*(.rela.sdata)
*(.rela.sdata.*)
*(.rela.gnu.linkonce.s.*)
}
.rel.sbss :
{
*(.rel.sbss)
*(.rel.sbss.*)
*(.rel.gnu.linkonce.sb.*)
}
.rela.sbss :
{
*(.rela.sbss)
*(.rela.sbss.*)
*(.rel.gnu.linkonce.sb.*)
}
.rel.bss :
{
*(.rel.bss)
*(.rel.bss.*)
*(.rel.gnu.linkonce.b.*)
}
.rela.bss :
{
*(.rela.bss)
*(.rela.bss.*)
*(.rela.gnu.linkonce.b.*)
}
.rela.stext : { *(.rela.stest) }
.rela.etext : { *(.rela.etest) }
.rela.sdata : { *(.rela.sdata) }
.rela.edata : { *(.rela.edata) }
.rela.eit_v : { *(.rela.eit_v) }
.rela.ebss : { *(.rela.ebss) }
.rela.srodata : { *(.rela.srodata) }
.rela.erodata : { *(.rela.erodata) }
.rela.got : { *(.rela.got) }
.rela.ctors : { *(.rela.ctors) }
.rela.dtors : { *(.rela.dtors) }
.rela.init : { *(.rela.init) }
.rela.fini : { *(.rela.fini) }
.rela.plt : { *(.rela.plt) }
.rel.stext : { *(.rel.stest) }
.rel.etext : { *(.rel.etest) }
.rel.sdata : { *(.rel.sdata) }
.rel.edata : { *(.rel.edata) }
.rel.ebss : { *(.rel.ebss) }
.rel.eit_v : { *(.rel.eit_v) }
.rel.srodata : { *(.rel.srodata) }
.rel.erodata : { *(.rel.erodata) }
.rel.got : { *(.rel.got) }
.rel.ctors : { *(.rel.ctors) }
.rel.dtors : { *(.rel.dtors) }
.rel.init : { *(.rel.init) }
.rel.fini : { *(.rel.fini) }
.rel.plt : { *(.rel.plt) }
/* Concatenate .page0 sections. Put them in the page0 memory bank
unless we are creating a relocatable file. */
.page0 :
{
*(.page0)
*(.softregs)
} > page0
/* Start of text section. */
.stext :
{
*(.stext)
} > text
.init :
{
*(.init)
} =0
/* Put trampolines at beginning of text at 0x4400 so that they
are not in memory bank window. */
.tramp :
{
*(.tramp)
} > text
.text :
{
/* Put startup code at beginning so that _start keeps same address. */
/* Startup code. */
KEEP (*(.install0)) /* Section should setup the stack pointer. */
KEEP (*(.install1)) /* Place holder for applications. */
KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
KEEP (*(.install3)) /* Place holder for applications. */
KEEP (*(.install4)) /* Section that calls the main. */
*(.init)
*(.text)
*(.text.*)
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.gnu.linkonce.t.*)
/* Finish code. */
KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
KEEP (*(.fini1)) /* Place holder for applications. */
KEEP (*(.fini2)) /* C++ destructors. */
KEEP (*(.fini3)) /* Place holder for applications. */
KEEP (*(.fini4)) /* Runtime exit. */
_etext = .;
PROVIDE (etext = .);
} > text
.eh_frame :
{
*(.eh_frame)
} > text
.gcc_except_table :
{
*(.gcc_except_table)
} > text
.rodata :
{
*(.rodata)
*(.rodata.*)
*(.gnu.linkonce.r*)
} > text
.rodata1 :
{
*(.rodata1)
} > text
/* Constructor and destructor tables are in ROM. */
.ctors :
{
PROVIDE (__CTOR_LIST__ = .);
KEEP (*(.ctors))
PROVIDE(__CTOR_END__ = .);
} > text
.dtors :
{
PROVIDE(__DTOR_LIST__ = .);
KEEP (*(.dtors))
PROVIDE(__DTOR_END__ = .);
} > text
/* Start of the data section image in ROM. */
__data_image = .;
PROVIDE (__data_image = .);
/* All read-only sections that normally go in PROM must be above.
We construct the DATA image section in PROM at end of all these
read-only sections. The data image must be copied at init time.
Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
.data : AT (__data_image)
{
__data_section_start = .;
PROVIDE (__data_section_start = .);
*(.sdata)
*(.data)
*(.data.*)
*(.data1)
*(.gnu.linkonce.d.*)
CONSTRUCTORS
_edata = .;
PROVIDE (edata = .);
} > data
__data_section_size = SIZEOF(.data);
PROVIDE (__data_section_size = SIZEOF(.data));
__data_image_end = __data_image + __data_section_size;
/* SCz: this does not work yet... This is supposed to force the loading
of _map_data.o (from libgcc.a) when the .data section is not empty.
By doing so, this should bring the code that copies the .data section
from ROM to RAM at init time.
___pre_comp_data_size = SIZEOF(.data);
__install_data_sections = ___pre_comp_data_size > 0 ?
__map_data_sections : 0;
*/
/* .install :
{
. = _data_image_end;
} > text */
/* Relocation for some bss and data sections. */
.bss :
{
__bss_start = .;
*(.sbss)
*(.scommon)
*(.dynbss)
*(.bss)
*(.bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
PROVIDE (_end = .);
} > data
__bss_size = SIZEOF(.bss);
PROVIDE (__bss_size = SIZEOF(.bss));
/* If the 'vectors_addr' symbol is defined, it indicates the start address
of interrupt vectors. This depends on the 68HC11 operating mode:
Addr
Single chip 0xffc0
Extended mode 0xffc0
Bootstrap 0x00c0
Test 0xbfc0
In general, the vectors address is 0xffc0. This can be overriden
with the '-defsym vectors_addr=0xbfc0' ld option.
Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but
they are redirected to 0x00c0 by the internal PROM. Application's vectors
must also consist of jump instructions (see Motorola's manual). */
PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0);
.vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 :
{
KEEP (*(.vectors))
}
/* 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.
Treatment of DWARF debug section must be at end of the linker
script to avoid problems when there are undefined symbols. It's necessary
to avoid that the DWARF section is relocated before such undefined
symbols are found. */
/* 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) *(.gnu.linkonce.wi.*) }
.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) }
}
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