/* Linker script for 68HC12 executable (PROM). */
|
/* Linker script for 68HC12 executable (PROM). */
|
ENTRY(_start)
|
ENTRY(_start)
|
OUTPUT_FORMAT("elf32-m68hc12", "elf32-m68hc12", "elf32-m68hc12")
|
OUTPUT_FORMAT("elf32-m68hc12", "elf32-m68hc12", "elf32-m68hc12")
|
OUTPUT_ARCH(m68hc12)
|
OUTPUT_ARCH(m68hc12)
|
|
|
GROUP(-lc -lbcc -lgcc)
|
GROUP(-lc -lbcc -lgcc)
|
SEARCH_DIR(.);
|
SEARCH_DIR(.);
|
/* Fixed definition of the available memory banks.
|
/* Fixed definition of the available memory banks.
|
See generic emulation script for a user defined configuration. */
|
See generic emulation script for a user defined configuration. */
|
|
|
/* The memory layout below is suitable for gcc validation.
|
/* The memory layout below is suitable for gcc validation.
|
It takes care of big programs allowing up to 48128 bytes
|
It takes care of big programs allowing up to 48128 bytes
|
of text while allowing some programs that consume some
|
of text while allowing some programs that consume some
|
memory (comp-goto-1 requires the RAM to be set to 0x4400
|
memory (comp-goto-1 requires the RAM to be set to 0x4400
|
to avoid head<->stack collision in malloc/sbrk). */
|
to avoid head<->stack collision in malloc/sbrk). */
|
MEMORY
|
MEMORY
|
{
|
{
|
page0 (rwx) : ORIGIN = 0x00, LENGTH = 256
|
page0 (rwx) : ORIGIN = 0x00, LENGTH = 256
|
text (rx) : ORIGIN = 0x04400, LENGTH = 0x10000 - 0x4400
|
text (rx) : ORIGIN = 0x04400, LENGTH = 0x10000 - 0x4400
|
data : ORIGIN = 0x01100, LENGTH = 0x2000 - 0x1100
|
data : ORIGIN = 0x01100, LENGTH = 0x2000 - 0x1100
|
}
|
}
|
/* Setup the stack on the top of the data memory bank. */
|
/* Setup the stack on the top of the data memory bank. */
|
PROVIDE (_stack = 0x04400 - 1);
|
PROVIDE (_stack = 0x04400 - 1);
|
SECTIONS
|
SECTIONS
|
{
|
{
|
.hash : { *(.hash) }
|
.hash : { *(.hash) }
|
.dynsym : { *(.dynsym) }
|
.dynsym : { *(.dynsym) }
|
.dynstr : { *(.dynstr) }
|
.dynstr : { *(.dynstr) }
|
.gnu.version : { *(.gnu.version) }
|
.gnu.version : { *(.gnu.version) }
|
.gnu.version_d : { *(.gnu.version_d) }
|
.gnu.version_d : { *(.gnu.version_d) }
|
.gnu.version_r : { *(.gnu.version_r) }
|
.gnu.version_r : { *(.gnu.version_r) }
|
.rel.text :
|
.rel.text :
|
{
|
{
|
*(.rel.text)
|
*(.rel.text)
|
*(.rel.text.*)
|
*(.rel.text.*)
|
*(.rel.gnu.linkonce.t.*)
|
*(.rel.gnu.linkonce.t.*)
|
}
|
}
|
.rela.text :
|
.rela.text :
|
{
|
{
|
*(.rela.text)
|
*(.rela.text)
|
*(.rela.text.*)
|
*(.rela.text.*)
|
*(.rela.gnu.linkonce.t.*)
|
*(.rela.gnu.linkonce.t.*)
|
}
|
}
|
.rel.data :
|
.rel.data :
|
{
|
{
|
*(.rel.data)
|
*(.rel.data)
|
*(.rel.data.*)
|
*(.rel.data.*)
|
*(.rel.gnu.linkonce.d.*)
|
*(.rel.gnu.linkonce.d.*)
|
}
|
}
|
.rela.data :
|
.rela.data :
|
{
|
{
|
*(.rela.data)
|
*(.rela.data)
|
*(.rela.data.*)
|
*(.rela.data.*)
|
*(.rela.gnu.linkonce.d.*)
|
*(.rela.gnu.linkonce.d.*)
|
}
|
}
|
.rel.rodata :
|
.rel.rodata :
|
{
|
{
|
*(.rel.rodata)
|
*(.rel.rodata)
|
*(.rel.rodata.*)
|
*(.rel.rodata.*)
|
*(.rel.gnu.linkonce.r.*)
|
*(.rel.gnu.linkonce.r.*)
|
}
|
}
|
.rela.rodata :
|
.rela.rodata :
|
{
|
{
|
*(.rela.rodata)
|
*(.rela.rodata)
|
*(.rela.rodata.*)
|
*(.rela.rodata.*)
|
*(.rela.gnu.linkonce.r.*)
|
*(.rela.gnu.linkonce.r.*)
|
}
|
}
|
.rel.sdata :
|
.rel.sdata :
|
{
|
{
|
*(.rel.sdata)
|
*(.rel.sdata)
|
*(.rel.sdata.*)
|
*(.rel.sdata.*)
|
*(.rel.gnu.linkonce.s.*)
|
*(.rel.gnu.linkonce.s.*)
|
}
|
}
|
.rela.sdata :
|
.rela.sdata :
|
{
|
{
|
*(.rela.sdata)
|
*(.rela.sdata)
|
*(.rela.sdata.*)
|
*(.rela.sdata.*)
|
*(.rela.gnu.linkonce.s.*)
|
*(.rela.gnu.linkonce.s.*)
|
}
|
}
|
.rel.sbss :
|
.rel.sbss :
|
{
|
{
|
*(.rel.sbss)
|
*(.rel.sbss)
|
*(.rel.sbss.*)
|
*(.rel.sbss.*)
|
*(.rel.gnu.linkonce.sb.*)
|
*(.rel.gnu.linkonce.sb.*)
|
}
|
}
|
.rela.sbss :
|
.rela.sbss :
|
{
|
{
|
*(.rela.sbss)
|
*(.rela.sbss)
|
*(.rela.sbss.*)
|
*(.rela.sbss.*)
|
*(.rel.gnu.linkonce.sb.*)
|
*(.rel.gnu.linkonce.sb.*)
|
}
|
}
|
.rel.bss :
|
.rel.bss :
|
{
|
{
|
*(.rel.bss)
|
*(.rel.bss)
|
*(.rel.bss.*)
|
*(.rel.bss.*)
|
*(.rel.gnu.linkonce.b.*)
|
*(.rel.gnu.linkonce.b.*)
|
}
|
}
|
.rela.bss :
|
.rela.bss :
|
{
|
{
|
*(.rela.bss)
|
*(.rela.bss)
|
*(.rela.bss.*)
|
*(.rela.bss.*)
|
*(.rela.gnu.linkonce.b.*)
|
*(.rela.gnu.linkonce.b.*)
|
}
|
}
|
.rela.stext : { *(.rela.stest) }
|
.rela.stext : { *(.rela.stest) }
|
.rela.etext : { *(.rela.etest) }
|
.rela.etext : { *(.rela.etest) }
|
.rela.sdata : { *(.rela.sdata) }
|
.rela.sdata : { *(.rela.sdata) }
|
.rela.edata : { *(.rela.edata) }
|
.rela.edata : { *(.rela.edata) }
|
.rela.eit_v : { *(.rela.eit_v) }
|
.rela.eit_v : { *(.rela.eit_v) }
|
.rela.ebss : { *(.rela.ebss) }
|
.rela.ebss : { *(.rela.ebss) }
|
.rela.srodata : { *(.rela.srodata) }
|
.rela.srodata : { *(.rela.srodata) }
|
.rela.erodata : { *(.rela.erodata) }
|
.rela.erodata : { *(.rela.erodata) }
|
.rela.got : { *(.rela.got) }
|
.rela.got : { *(.rela.got) }
|
.rela.ctors : { *(.rela.ctors) }
|
.rela.ctors : { *(.rela.ctors) }
|
.rela.dtors : { *(.rela.dtors) }
|
.rela.dtors : { *(.rela.dtors) }
|
.rela.init : { *(.rela.init) }
|
.rela.init : { *(.rela.init) }
|
.rela.fini : { *(.rela.fini) }
|
.rela.fini : { *(.rela.fini) }
|
.rela.plt : { *(.rela.plt) }
|
.rela.plt : { *(.rela.plt) }
|
.rel.stext : { *(.rel.stest) }
|
.rel.stext : { *(.rel.stest) }
|
.rel.etext : { *(.rel.etest) }
|
.rel.etext : { *(.rel.etest) }
|
.rel.sdata : { *(.rel.sdata) }
|
.rel.sdata : { *(.rel.sdata) }
|
.rel.edata : { *(.rel.edata) }
|
.rel.edata : { *(.rel.edata) }
|
.rel.ebss : { *(.rel.ebss) }
|
.rel.ebss : { *(.rel.ebss) }
|
.rel.eit_v : { *(.rel.eit_v) }
|
.rel.eit_v : { *(.rel.eit_v) }
|
.rel.srodata : { *(.rel.srodata) }
|
.rel.srodata : { *(.rel.srodata) }
|
.rel.erodata : { *(.rel.erodata) }
|
.rel.erodata : { *(.rel.erodata) }
|
.rel.got : { *(.rel.got) }
|
.rel.got : { *(.rel.got) }
|
.rel.ctors : { *(.rel.ctors) }
|
.rel.ctors : { *(.rel.ctors) }
|
.rel.dtors : { *(.rel.dtors) }
|
.rel.dtors : { *(.rel.dtors) }
|
.rel.init : { *(.rel.init) }
|
.rel.init : { *(.rel.init) }
|
.rel.fini : { *(.rel.fini) }
|
.rel.fini : { *(.rel.fini) }
|
.rel.plt : { *(.rel.plt) }
|
.rel.plt : { *(.rel.plt) }
|
/* Concatenate .page0 sections. Put them in the page0 memory bank
|
/* Concatenate .page0 sections. Put them in the page0 memory bank
|
unless we are creating a relocatable file. */
|
unless we are creating a relocatable file. */
|
.page0 :
|
.page0 :
|
{
|
{
|
*(.page0)
|
*(.page0)
|
} > page0
|
} > page0
|
|
|
/* Start of text section. */
|
/* Start of text section. */
|
.stext :
|
.stext :
|
{
|
{
|
*(.stext)
|
*(.stext)
|
} > text
|
} > text
|
.init :
|
.init :
|
{
|
{
|
*(.init)
|
*(.init)
|
} =0
|
} =0
|
/* Put trampolines at beginning of text at 0x4400 so that they
|
/* Put trampolines at beginning of text at 0x4400 so that they
|
are not in memory bank window. */
|
are not in memory bank window. */
|
.tramp :
|
.tramp :
|
{
|
{
|
*(.tramp)
|
*(.tramp)
|
} > text
|
} > text
|
.text :
|
.text :
|
{
|
{
|
/* Put startup code at beginning so that _start keeps same address. */
|
/* Put startup code at beginning so that _start keeps same address. */
|
/* Startup code. */
|
/* Startup code. */
|
KEEP (*(.install0)) /* Section should setup the stack pointer. */
|
KEEP (*(.install0)) /* Section should setup the stack pointer. */
|
KEEP (*(.install1)) /* Place holder for applications. */
|
KEEP (*(.install1)) /* Place holder for applications. */
|
KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
|
KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
|
KEEP (*(.install3)) /* Place holder for applications. */
|
KEEP (*(.install3)) /* Place holder for applications. */
|
KEEP (*(.install4)) /* Section that calls the main. */
|
KEEP (*(.install4)) /* Section that calls the main. */
|
*(.init)
|
*(.init)
|
*(.text)
|
*(.text)
|
*(.text.*)
|
*(.text.*)
|
/* .gnu.warning sections are handled specially by elf32.em. */
|
/* .gnu.warning sections are handled specially by elf32.em. */
|
*(.gnu.warning)
|
*(.gnu.warning)
|
*(.gnu.linkonce.t.*)
|
*(.gnu.linkonce.t.*)
|
/* Finish code. */
|
/* Finish code. */
|
KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
|
KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
|
KEEP (*(.fini1)) /* Place holder for applications. */
|
KEEP (*(.fini1)) /* Place holder for applications. */
|
KEEP (*(.fini2)) /* C++ destructors. */
|
KEEP (*(.fini2)) /* C++ destructors. */
|
KEEP (*(.fini3)) /* Place holder for applications. */
|
KEEP (*(.fini3)) /* Place holder for applications. */
|
KEEP (*(.fini4)) /* Runtime exit. */
|
KEEP (*(.fini4)) /* Runtime exit. */
|
_etext = .;
|
_etext = .;
|
PROVIDE (etext = .);
|
PROVIDE (etext = .);
|
} > text
|
} > text
|
.eh_frame :
|
.eh_frame :
|
{
|
{
|
*(.eh_frame)
|
*(.eh_frame)
|
} > text
|
} > text
|
.gcc_except_table :
|
.gcc_except_table :
|
{
|
{
|
*(.gcc_except_table)
|
*(.gcc_except_table)
|
} > text
|
} > text
|
.rodata :
|
.rodata :
|
{
|
{
|
*(.rodata)
|
*(.rodata)
|
*(.rodata.*)
|
*(.rodata.*)
|
*(.gnu.linkonce.r*)
|
*(.gnu.linkonce.r*)
|
} > text
|
} > text
|
.rodata1 :
|
.rodata1 :
|
{
|
{
|
*(.rodata1)
|
*(.rodata1)
|
} > text
|
} > text
|
/* Constructor and destructor tables are in ROM. */
|
/* Constructor and destructor tables are in ROM. */
|
.ctors :
|
.ctors :
|
{
|
{
|
PROVIDE (__CTOR_LIST__ = .);
|
PROVIDE (__CTOR_LIST__ = .);
|
KEEP (*(.ctors))
|
KEEP (*(.ctors))
|
PROVIDE(__CTOR_END__ = .);
|
PROVIDE(__CTOR_END__ = .);
|
} > text
|
} > text
|
.dtors :
|
.dtors :
|
{
|
{
|
PROVIDE(__DTOR_LIST__ = .);
|
PROVIDE(__DTOR_LIST__ = .);
|
KEEP (*(.dtors))
|
KEEP (*(.dtors))
|
PROVIDE(__DTOR_END__ = .);
|
PROVIDE(__DTOR_END__ = .);
|
} > text
|
} > text
|
/* Start of the data section image in ROM. */
|
/* Start of the data section image in ROM. */
|
__data_image = .;
|
__data_image = .;
|
PROVIDE (__data_image = .);
|
PROVIDE (__data_image = .);
|
/* All read-only sections that normally go in PROM must be above.
|
/* 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
|
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.
|
read-only sections. The data image must be copied at init time.
|
Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
|
Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
|
.data : AT (__data_image)
|
.data : AT (__data_image)
|
{
|
{
|
__data_section_start = .;
|
__data_section_start = .;
|
PROVIDE (__data_section_start = .);
|
PROVIDE (__data_section_start = .);
|
*(.sdata)
|
*(.sdata)
|
*(.data)
|
*(.data)
|
*(.data.*)
|
*(.data.*)
|
*(.data1)
|
*(.data1)
|
*(.gnu.linkonce.d.*)
|
*(.gnu.linkonce.d.*)
|
CONSTRUCTORS
|
CONSTRUCTORS
|
_edata = .;
|
_edata = .;
|
PROVIDE (edata = .);
|
PROVIDE (edata = .);
|
} > data
|
} > data
|
__data_section_size = SIZEOF(.data);
|
__data_section_size = SIZEOF(.data);
|
PROVIDE (__data_section_size = SIZEOF(.data));
|
PROVIDE (__data_section_size = SIZEOF(.data));
|
__data_image_end = __data_image + __data_section_size;
|
__data_image_end = __data_image + __data_section_size;
|
/* SCz: this does not work yet... This is supposed to force the loading
|
/* 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.
|
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
|
By doing so, this should bring the code that copies the .data section
|
from ROM to RAM at init time.
|
from ROM to RAM at init time.
|
___pre_comp_data_size = SIZEOF(.data);
|
___pre_comp_data_size = SIZEOF(.data);
|
__install_data_sections = ___pre_comp_data_size > 0 ?
|
__install_data_sections = ___pre_comp_data_size > 0 ?
|
__map_data_sections : 0;
|
__map_data_sections : 0;
|
*/
|
*/
|
/* .install :
|
/* .install :
|
{
|
{
|
. = _data_image_end;
|
. = _data_image_end;
|
} > text */
|
} > text */
|
/* Relocation for some bss and data sections. */
|
/* Relocation for some bss and data sections. */
|
.bss :
|
.bss :
|
{
|
{
|
__bss_start = .;
|
__bss_start = .;
|
*(.softregs)
|
*(.softregs)
|
*(.sbss)
|
*(.sbss)
|
*(.scommon)
|
*(.scommon)
|
*(.dynbss)
|
*(.dynbss)
|
*(.bss)
|
*(.bss)
|
*(.bss.*)
|
*(.bss.*)
|
*(.gnu.linkonce.b.*)
|
*(.gnu.linkonce.b.*)
|
*(COMMON)
|
*(COMMON)
|
PROVIDE (_end = .);
|
PROVIDE (_end = .);
|
} > data
|
} > data
|
__bss_size = SIZEOF(.bss);
|
__bss_size = SIZEOF(.bss);
|
PROVIDE (__bss_size = SIZEOF(.bss));
|
PROVIDE (__bss_size = SIZEOF(.bss));
|
/* If the 'vectors_addr' symbol is defined, it indicates the start address
|
/* If the 'vectors_addr' symbol is defined, it indicates the start address
|
of interrupt vectors. This depends on the 68HC11 operating mode:
|
of interrupt vectors. This depends on the 68HC11 operating mode:
|
Addr
|
Addr
|
Single chip 0xffc0
|
Single chip 0xffc0
|
Extended mode 0xffc0
|
Extended mode 0xffc0
|
Bootstrap 0x00c0
|
Bootstrap 0x00c0
|
Test 0xbfc0
|
Test 0xbfc0
|
In general, the vectors address is 0xffc0. This can be overriden
|
In general, the vectors address is 0xffc0. This can be overriden
|
with the '-defsym vectors_addr=0xbfc0' ld option.
|
with the '-defsym vectors_addr=0xbfc0' ld option.
|
Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but
|
Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but
|
they are redirected to 0x00c0 by the internal PROM. Application's vectors
|
they are redirected to 0x00c0 by the internal PROM. Application's vectors
|
must also consist of jump instructions (see Motorola's manual). */
|
must also consist of jump instructions (see Motorola's manual). */
|
PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0);
|
PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0);
|
.vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 :
|
.vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 :
|
{
|
{
|
KEEP (*(.vectors))
|
KEEP (*(.vectors))
|
}
|
}
|
/* Stabs debugging sections. */
|
/* Stabs debugging sections. */
|
.stab 0 : { *(.stab) }
|
.stab 0 : { *(.stab) }
|
.stabstr 0 : { *(.stabstr) }
|
.stabstr 0 : { *(.stabstr) }
|
.stab.excl 0 : { *(.stab.excl) }
|
.stab.excl 0 : { *(.stab.excl) }
|
.stab.exclstr 0 : { *(.stab.exclstr) }
|
.stab.exclstr 0 : { *(.stab.exclstr) }
|
.stab.index 0 : { *(.stab.index) }
|
.stab.index 0 : { *(.stab.index) }
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
.comment 0 : { *(.comment) }
|
.comment 0 : { *(.comment) }
|
/* DWARF debug sections.
|
/* DWARF debug sections.
|
Symbols in the DWARF debugging sections are relative to the beginning
|
Symbols in the DWARF debugging sections are relative to the beginning
|
of the section so we begin them at 0.
|
of the section so we begin them at 0.
|
Treatment of DWARF debug section must be at end of the linker
|
Treatment of DWARF debug section must be at end of the linker
|
script to avoid problems when there are undefined symbols. It's necessary
|
script to avoid problems when there are undefined symbols. It's necessary
|
to avoid that the DWARF section is relocated before such undefined
|
to avoid that the DWARF section is relocated before such undefined
|
symbols are found. */
|
symbols are found. */
|
/* DWARF 1 */
|
/* DWARF 1 */
|
.debug 0 : { *(.debug) }
|
.debug 0 : { *(.debug) }
|
.line 0 : { *(.line) }
|
.line 0 : { *(.line) }
|
/* GNU DWARF 1 extensions */
|
/* GNU DWARF 1 extensions */
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
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.debug_sfnames 0 : { *(.debug_sfnames) }
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/* DWARF 1.1 and DWARF 2 */
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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/* DWARF 2 */
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/* DWARF 2 */
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.debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
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.debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_line 0 : { *(.debug_line) }
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.debug_frame 0 : { *(.debug_frame) }
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.debug_frame 0 : { *(.debug_frame) }
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.debug_str 0 : { *(.debug_str) }
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.debug_str 0 : { *(.debug_str) }
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.debug_loc 0 : { *(.debug_loc) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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.debug_ranges 0 : { *(.debug_ranges) }
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.debug_ranges 0 : { *(.debug_ranges) }
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}
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}
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|
|
