5025fc547d
* m32c/varvects.h: New. * m32c/sample.c: New. * m32c/Makefile.in: Add m32cgloss library support. * m32c/crt0.S: Tweaks to support interrupts by default. * m32c/m32c.tmpl: Likewise.
216 lines
7.2 KiB
Cheetah
216 lines
7.2 KiB
Cheetah
/*
|
|
|
|
Copyright (c) 2005,2008 Red Hat Incorporated.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
The name of Red Hat Incorporated may not be used to endorse
|
|
or promote products derived from this software without specific
|
|
prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
|
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
/* Default linker script, for normal executables */
|
|
OUTPUT_FORMAT("elf32-m32c", "elf32-m32c",
|
|
"elf32-m32c")
|
|
OUTPUT_ARCH(m32c)
|
|
ENTRY(_start)
|
|
INPUT(-lm32cgloss)
|
|
/* Do we need any of these for elf?
|
|
__DYNAMIC = 0; */
|
|
MEMORY {
|
|
RAM (w) : ORIGIN = RAMSTART, LENGTH = RAMSIZE
|
|
ROM (r) : ORIGIN = ROMSTART, LENGTH = ROMSIZE
|
|
VEC (r) : ORIGIN = VECSTART, LENGTH = 32
|
|
RESETVEC (r) : ORIGIN = RESETSTART, LENGTH = 4
|
|
}
|
|
SECTIONS
|
|
{
|
|
/* There are three cases we care about: First, RW data that must be
|
|
in the low 64k. This will always be copied from ROM. Second, RO
|
|
data that must be in the low 64k. This may be copied from ROM if
|
|
the ROM is above 64k. Third, anything that does not need to be
|
|
in the first 64k. Chips normally only have two memory regions;
|
|
low ram and either high or low rom. We map the low rom needs
|
|
into one of the actual regions. */
|
|
|
|
/* .text goes first so the rom image of ram data will follow it. */
|
|
.text :
|
|
{
|
|
*(.text .stub .text.* .gnu.linkonce.t.*)
|
|
KEEP (*(.text.*personality*))
|
|
/* .gnu.warning sections are handled specially by elf32.em. */
|
|
*(.gnu.warning)
|
|
*(.interp .hash .dynsym .dynstr .gnu.version*)
|
|
PROVIDE (__etext = .);
|
|
PROVIDE (_etext = .);
|
|
PROVIDE (etext = .);
|
|
. = ALIGN(2);
|
|
PROVIDE(__romdatastart = .); /* IF_ROCOPY */
|
|
} > ROM =0
|
|
|
|
/* rodata will either be part of data, or will be in low rom. So we
|
|
might be spanning it, or we might not. This lets us include it
|
|
in our calculations when appropriate. */
|
|
|
|
.rodata : {
|
|
. = ALIGN(2);
|
|
PROVIDE(__datastart = .); /* IF_ROCOPY */
|
|
*(.plt)
|
|
KEEP (*(.init))
|
|
KEEP (*(.fini))
|
|
*(.rodata .rodata.* .gnu.linkonce.r.*)
|
|
*(.rodata1)
|
|
*(.eh_frame_hdr)
|
|
KEEP (*(.eh_frame))
|
|
KEEP (*(.gcc_except_table)) *(.gcc_except_table.*)
|
|
. = ALIGN(2);
|
|
PROVIDE(__romdatastart = .); /* IF_ROROM */
|
|
} > LOWROM
|
|
|
|
.data : {
|
|
. = ALIGN(32 / 8);
|
|
PROVIDE (__datastart = .); /* IF_ROROM */
|
|
PROVIDE (__preinit_array_start = .);
|
|
KEEP (*(.preinit_array))
|
|
PROVIDE (__preinit_array_end = .);
|
|
PROVIDE (__init_array_start = .);
|
|
KEEP (*(.init_array))
|
|
PROVIDE (__init_array_end = .);
|
|
PROVIDE (__fini_array_start = .);
|
|
KEEP (*(.fini_array))
|
|
PROVIDE (__fini_array_end = .);
|
|
|
|
/* gcc uses crtbegin.o to find the start of
|
|
the constructors, so we make sure it is
|
|
first. Because this is a wildcard, it
|
|
doesn't matter if the user does not
|
|
actually link against crtbegin.o; the
|
|
linker won't look for a file to match a
|
|
wildcard. The wildcard also means that it
|
|
doesn't matter which directory crtbegin.o
|
|
is in. */
|
|
KEEP (*crtbegin*.o(.ctors))
|
|
/* We don't want to include the .ctor section from
|
|
from the crtend.o file until after the sorted ctors.
|
|
The .ctor section from the crtend file contains the
|
|
end of ctors marker and it must be last */
|
|
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
|
|
KEEP (*(SORT(.ctors.*)))
|
|
KEEP (*(.ctors))
|
|
|
|
KEEP (*crtbegin*.o(.dtors))
|
|
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
|
|
KEEP (*(SORT(.dtors.*)))
|
|
KEEP (*(.dtors))
|
|
|
|
KEEP (*(.jcr))
|
|
*(.data.rel.ro.local) *(.data.rel.ro*)
|
|
*(.dynamic)
|
|
|
|
*(.data .data.* .gnu.linkonce.d.*)
|
|
KEEP (*(.gnu.linkonce.d.*personality*))
|
|
SORT(CONSTRUCTORS)
|
|
*(.data1)
|
|
*(.got.plt) *(.got)
|
|
PROVIDE (__var_vect_start = .);
|
|
*(.var_vects)
|
|
|
|
. = ALIGN(2);
|
|
_edata = .;
|
|
PROVIDE (edata = .);
|
|
PROVIDE (__dataend = .);
|
|
} > RAM AT>ROM
|
|
|
|
/* Note that __romdatacopysize may be ZERO for the simulator, which
|
|
knows how to intialize RAM directly. It should ONLY be used for
|
|
copying data from ROM to RAM; if you need to know the size of the
|
|
data section, subtract the end symbol from the start symbol. */
|
|
/* Note that crt0 assumes this is even; all the start/stop symbols
|
|
are also assumed word-aligned. */
|
|
PROVIDE (__romdatacopysize = SIZEOF(.rodata) + SIZEOF(.data));
|
|
|
|
.bss : {
|
|
. = ALIGN(2);
|
|
PROVIDE (__bssstart = .);
|
|
*(.dynbss)
|
|
*(.bss .bss.* .gnu.linkonce.b.*)
|
|
*(COMMON)
|
|
. = ALIGN(2);
|
|
PROVIDE (__bssend = .);
|
|
_end = .;
|
|
PROVIDE (end = .);
|
|
} > RAM
|
|
PROVIDE (__bsssize = SIZEOF(.bss));
|
|
|
|
.stack (RAMSTART + RAMSIZE - 2) :
|
|
{
|
|
PROVIDE (__stack = .);
|
|
*(.stack)
|
|
}
|
|
|
|
.vec : {
|
|
*(.vec)
|
|
} > VEC
|
|
.resetvec : {
|
|
*(.resetvec)
|
|
} > RESETVEC
|
|
|
|
/* The rest are all not normally part of the runtime image. */
|
|
|
|
/* 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 .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) }
|
|
/* 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) }
|
|
/DISCARD/ : { *(.note.GNU-stack) }
|
|
}
|